Hematology

At about 18 months’ follow-up in treatment naive acute myelogenous leukemia (AML) patients who were 75 years or older or otherwise unfit for intensive chemotherapy, median overall survival (OS) was 8.4 months when they were randomized to low-dose cytarabine (LDAC) plus the BCL-2 inhibitor venetoclax versus 4.1 months with LDAC plus placebo. The results from the phase 3 trial were reported at the virtual annual congress of the European Hematology Association.

The combination also improved rates of remission, event-free survival, and patient reported outcomes and lessened transfusion requirements. Adverse events were manageable.

The findings position venetoclax add-on with LDAC “as a potential new standard of care” for untreated patients ineligible for intensive chemotherapy, lead investigator Andrew Wei, MD, PhD, an AML researcher at Monash University, Melbourne, said at the meeting.

The study addresses a substantial unmet need. The median age at AML diagnosis is over 68 years old and comorbidities such as heart failure and reduced creatinine clearance are common, which make the risk of toxicity with standard chemotherapy too high. Single-agent alternatives are of limited benefit, so Dr. Wei’s group and others are looking for better options to plug the treatment gap when standard chemotherapy is contraindicated.

Several combinations are under investigation, including LDAC plus venetoclax, which appears to have a synergistic effect greater than either agent on its own, Dr. Wei and colleagues explained in their journal report, which was published online to coincide with his presentation (Blood. 2020 Jun 11;135(24):2137-45).

“A challenging AML population”

In the study, 143 patients were randomized to oral venetoclax 600 mg daily and 68 to placebo in 28-day cycles, on a background of LDAC 20 mg/m² administered subcutaneously on days 1-10 of each cycle.

“This study enrolled a challenging AML population, with nearly 60% age ≥75 years and a high proportion of patients with secondary disease (38%), prior hypomethylating agent (HMA) treatment (20%), poor cytogenetic risk (32%), and TP53 mutations (15%), which are known factors associated with dismal prognosis in AML,” the investigators noted in their report.

There was a numerical benefit in OS at 12 months – the preplanned primary outcome – but it was not statistically significant. At 18 months, however, and after adjustment for a higher rate of secondary AML in the venetoclax arm and other confounders in a post hoc analysis, survival differences reached significance. The 4.3-month OS benefit with the combination translated into a 30% reduction in the risk of death (hazard ratio, 0.70; 95% confidence interval, 0.50-0.99; P = .04)

Survival outcomes “were particularly promising for patient subgroups with NPM1- (median OS, not reached) and IDH1/2-mutant AML (median OS, 19.4 months),” the team noted.

Complete remission (CR) were 48% in the venetoclax arm, compared with 13% in the placebo group, and 34% of venetoclax patients versus 3% of placebo patients went into remission after their first cycle. Venetoclax subjects also had longer median event free survival (4.7 months vs. 2 months); higher rates of red blood cell and platelet transfusion independence (37% vs. 16%); and higher rates of cytometric minimal residual disease levels below 0.1% (6% vs. 1%).

The findings correlated with “strong improvements” in patient-reported outcomes, including fatigue and quality of life, the investigators reported.
 

Risk mitigation

Grade 3 or higher adverse events (AEs) included febrile neutropenia (32% in the venetoclax arm versus 29% in the placebo group), neutropenia (47% venetoclax vs. 16% placebo), thrombocytopenia (45% vs. 37%), and anemia (25% vs. 22%). The eight cases of tumor lysis syndrome (TLS) were all in the venetoclax arm. Grade 3 or higher bleeding was higher in the venetoclax arm (11% versus 7%), but the incidence of fatal bleeding was similar between the groups (1.4% venetoclax versus 1.5%).

“Although the venetoclax arm showed modest increases in hematologic AEs, the rate of AEs leading to treatment discontinuation (24% vs. 25%) and the rate of serious AEs such as pneumonia” and sepsis “were nearly identical between” the arms, the team said.

The combination “is more myelosuppressive,” but the effects “were mostly mitigated by venetoclax dose interruptions and reductions.” To mitigate the TLS risk, patients were hospitalized for TLS evaluation and prophylaxis during the 4-day venetoclax ramp-up in the first treatment cycle and for 24 hours after the 600-mg target was reached. “I think this is an extremely important measure to avoid this small but important complication,” Dr. Wei said at the meeting.
 

A moderate step forward

Dr. Lowenberg and Dr. Huls noted in their commentary that, despite the favorable outcomes, “the results are still sobering with a rapid drop of the survival curves to values of [around] 25% or less within 18 months, and event-free survival rates even falling to considerably lower levels.”

Also, there was a “weak correlation between the relatively wide differences in comparative CR/CRi rates and the much smaller differences in survival,” perhaps “due to a limited depth of the complete responses following venetoclax-LDAC therapy or the early development of therapeutic resistance,” they said.

The commentary also noted another option, adding the hedgehog pathway inhibitor glasdegib, instead of venetoclax, to LDAC. It also improved survival in a similar randomized study in unfit AML and high-risk myelodysplastic syndrome patients, from a median survival of 4.9 months with LDAC alone to 8.8 months with the combination (Leukemia. 2019 Feb;33(2):379-389. doi: 10.1038/s41375-018-0312-9).
 

Dueling regimens

Another alternative approach – venetoclax plus the HMA agent azacitidine – garnered a lot of attention at the meeting when it was reported that the combination had a median overall survival of 14.7 months, versus 9.6 months with azacitidine alone, in patients ineligible for intensive chemotherapy. CR/CRi rates were 66% with the combination, versus 28%.

“It seems like the results were better with the combination of venetoclax and azacitidine” than venetoclax plus LDAC, said Gunnar Juliusson, MD, PhD, of Lund (Sweden) University, who moderated Dr. Wei’s presentation.

He wanted to know if there was a way to identify patients who would do better on one regimen versus the other and was curious about the fact that the azacitidine study used a dose of 400 mg venetoclax, instead of 600 mg.

Dr. Wei noted the high incidence of poor prognostic factors in his study, including prior HMA treatment in 20%, but also that “we don’t know for sure” if there’s a clinically meaningful benefit with the higher dose.

He also said the optimal number of venetoclax cycles for best response is unknown. For now, treatment is “recommend until either [disease] progression, dose intolerance, or patient or physician preference,” he noted. Venetoclax subjects in his study had a median of four treatment cycles versus two in the placebo group. Combination patients in the azacitidine study had a median of seven cycles versus 4.5 with placebo.

Venetoclax already carries an indication in the United States in combination with azacitidine, decitabine, or LDAC for newly-diagnosed AML in adults 75 years or older or who have comorbidities that preclude use of intensive induction chemotherapy, at a daily dosage of 400 mg with HMAs and 600 mg with LDAC.

Labeling notes that “continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.”

Both venetoclax trials were sponsored by the drug’s maker, AbbVie, which was involved with data interpretation and other matters. Dr. Wei is a consultant for and receives research funding from the company and also receives royalty payments in relation to venetoclax. The commentators did not have any competing financial interests. Disclosures, if any, were not reported for Dr. Juliusson.
 

aotto@mdedge.com

SOURCE: Wei AH et al. EHA Congress, Abstract S136.

At about 18 months’ follow-up in treatment naive acute myelogenous leukemia (AML) patients who were 75 years or older or otherwise unfit for intensive chemotherapy, median overall survival (OS) was 8.4 months when they were randomized to low-dose cytarabine (LDAC) plus the BCL-2 inhibitor venetoclax versus 4.1 months with LDAC plus placebo. The results from the phase 3 trial were reported at the virtual annual congress of the European Hematology Association.

The combination also improved rates of remission, event-free survival, and patient reported outcomes and lessened transfusion requirements. Adverse events were manageable.

The findings position venetoclax add-on with LDAC “as a potential new standard of care” for untreated patients ineligible for intensive chemotherapy, lead investigator Andrew Wei, MD, PhD, an AML researcher at Monash University, Melbourne, said at the meeting.

The study addresses a substantial unmet need. The median age at AML diagnosis is over 68 years old and comorbidities such as heart failure and reduced creatinine clearance are common, which make the risk of toxicity with standard chemotherapy too high. Single-agent alternatives are of limited benefit, so Dr. Wei’s group and others are looking for better options to plug the treatment gap when standard chemotherapy is contraindicated.

Several combinations are under investigation, including LDAC plus venetoclax, which appears to have a synergistic effect greater than either agent on its own, Dr. Wei and colleagues explained in their journal report, which was published online to coincide with his presentation (Blood. 2020 Jun 11;135(24):2137-45).

“A challenging AML population”

In the study, 143 patients were randomized to oral venetoclax 600 mg daily and 68 to placebo in 28-day cycles, on a background of LDAC 20 mg/m² administered subcutaneously on days 1-10 of each cycle.

“This study enrolled a challenging AML population, with nearly 60% age ≥75 years and a high proportion of patients with secondary disease (38%), prior hypomethylating agent (HMA) treatment (20%), poor cytogenetic risk (32%), and TP53 mutations (15%), which are known factors associated with dismal prognosis in AML,” the investigators noted in their report.

There was a numerical benefit in OS at 12 months – the preplanned primary outcome – but it was not statistically significant. At 18 months, however, and after adjustment for a higher rate of secondary AML in the venetoclax arm and other confounders in a post hoc analysis, survival differences reached significance. The 4.3-month OS benefit with the combination translated into a 30% reduction in the risk of death (hazard ratio, 0.70; 95% confidence interval, 0.50-0.99; P = .04)

Survival outcomes “were particularly promising for patient subgroups with NPM1- (median OS, not reached) and IDH1/2-mutant AML (median OS, 19.4 months),” the team noted.

Complete remission (CR) were 48% in the venetoclax arm, compared with 13% in the placebo group, and 34% of venetoclax patients versus 3% of placebo patients went into remission after their first cycle. Venetoclax subjects also had longer median event free survival (4.7 months vs. 2 months); higher rates of red blood cell and platelet transfusion independence (37% vs. 16%); and higher rates of cytometric minimal residual disease levels below 0.1% (6% vs. 1%).

The findings correlated with “strong improvements” in patient-reported outcomes, including fatigue and quality of life, the investigators reported.
 

Risk mitigation

Grade 3 or higher adverse events (AEs) included febrile neutropenia (32% in the venetoclax arm versus 29% in the placebo group), neutropenia (47% venetoclax vs. 16% placebo), thrombocytopenia (45% vs. 37%), and anemia (25% vs. 22%). The eight cases of tumor lysis syndrome (TLS) were all in the venetoclax arm. Grade 3 or higher bleeding was higher in the venetoclax arm (11% versus 7%), but the incidence of fatal bleeding was similar between the groups (1.4% venetoclax versus 1.5%).

“Although the venetoclax arm showed modest increases in hematologic AEs, the rate of AEs leading to treatment discontinuation (24% vs. 25%) and the rate of serious AEs such as pneumonia” and sepsis “were nearly identical between” the arms, the team said.

The combination “is more myelosuppressive,” but the effects “were mostly mitigated by venetoclax dose interruptions and reductions.” To mitigate the TLS risk, patients were hospitalized for TLS evaluation and prophylaxis during the 4-day venetoclax ramp-up in the first treatment cycle and for 24 hours after the 600-mg target was reached. “I think this is an extremely important measure to avoid this small but important complication,” Dr. Wei said at the meeting.
 

A moderate step forward

Dr. Lowenberg and Dr. Huls noted in their commentary that, despite the favorable outcomes, “the results are still sobering with a rapid drop of the survival curves to values of [around] 25% or less within 18 months, and event-free survival rates even falling to considerably lower levels.”

Also, there was a “weak correlation between the relatively wide differences in comparative CR/CRi rates and the much smaller differences in survival,” perhaps “due to a limited depth of the complete responses following venetoclax-LDAC therapy or the early development of therapeutic resistance,” they said.

The commentary also noted another option, adding the hedgehog pathway inhibitor glasdegib, instead of venetoclax, to LDAC. It also improved survival in a similar randomized study in unfit AML and high-risk myelodysplastic syndrome patients, from a median survival of 4.9 months with LDAC alone to 8.8 months with the combination (Leukemia. 2019 Feb;33(2):379-389. doi: 10.1038/s41375-018-0312-9).
 

Dueling regimens

Another alternative approach – venetoclax plus the HMA agent azacitidine – garnered a lot of attention at the meeting when it was reported that the combination had a median overall survival of 14.7 months, versus 9.6 months with azacitidine alone, in patients ineligible for intensive chemotherapy. CR/CRi rates were 66% with the combination, versus 28%.

“It seems like the results were better with the combination of venetoclax and azacitidine” than venetoclax plus LDAC, said Gunnar Juliusson, MD, PhD, of Lund (Sweden) University, who moderated Dr. Wei’s presentation.

He wanted to know if there was a way to identify patients who would do better on one regimen versus the other and was curious about the fact that the azacitidine study used a dose of 400 mg venetoclax, instead of 600 mg.

Dr. Wei noted the high incidence of poor prognostic factors in his study, including prior HMA treatment in 20%, but also that “we don’t know for sure” if there’s a clinically meaningful benefit with the higher dose.

He also said the optimal number of venetoclax cycles for best response is unknown. For now, treatment is “recommend until either [disease] progression, dose intolerance, or patient or physician preference,” he noted. Venetoclax subjects in his study had a median of four treatment cycles versus two in the placebo group. Combination patients in the azacitidine study had a median of seven cycles versus 4.5 with placebo.

Venetoclax already carries an indication in the United States in combination with azacitidine, decitabine, or LDAC for newly-diagnosed AML in adults 75 years or older or who have comorbidities that preclude use of intensive induction chemotherapy, at a daily dosage of 400 mg with HMAs and 600 mg with LDAC.

Labeling notes that “continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.”

Both venetoclax trials were sponsored by the drug’s maker, AbbVie, which was involved with data interpretation and other matters. Dr. Wei is a consultant for and receives research funding from the company and also receives royalty payments in relation to venetoclax. The commentators did not have any competing financial interests. Disclosures, if any, were not reported for Dr. Juliusson.
 

aotto@mdedge.com

SOURCE: Wei AH et al. EHA Congress, Abstract S136.

At about 18 months’ follow-up in treatment naive acute myelogenous leukemia (AML) patients who were 75 years or older or otherwise unfit for intensive chemotherapy, median overall survival (OS) was 8.4 months when they were randomized to low-dose cytarabine (LDAC) plus the BCL-2 inhibitor venetoclax versus 4.1 months with LDAC plus placebo. The results from the phase 3 trial were reported at the virtual annual congress of the European Hematology Association.

The combination also improved rates of remission, event-free survival, and patient reported outcomes and lessened transfusion requirements. Adverse events were manageable.

The findings position venetoclax add-on with LDAC “as a potential new standard of care” for untreated patients ineligible for intensive chemotherapy, lead investigator Andrew Wei, MD, PhD, an AML researcher at Monash University, Melbourne, said at the meeting.

The study addresses a substantial unmet need. The median age at AML diagnosis is over 68 years old and comorbidities such as heart failure and reduced creatinine clearance are common, which make the risk of toxicity with standard chemotherapy too high. Single-agent alternatives are of limited benefit, so Dr. Wei’s group and others are looking for better options to plug the treatment gap when standard chemotherapy is contraindicated.

Several combinations are under investigation, including LDAC plus venetoclax, which appears to have a synergistic effect greater than either agent on its own, Dr. Wei and colleagues explained in their journal report, which was published online to coincide with his presentation (Blood. 2020 Jun 11;135(24):2137-45).

“A challenging AML population”

In the study, 143 patients were randomized to oral venetoclax 600 mg daily and 68 to placebo in 28-day cycles, on a background of LDAC 20 mg/m² administered subcutaneously on days 1-10 of each cycle.

“This study enrolled a challenging AML population, with nearly 60% age ≥75 years and a high proportion of patients with secondary disease (38%), prior hypomethylating agent (HMA) treatment (20%), poor cytogenetic risk (32%), and TP53 mutations (15%), which are known factors associated with dismal prognosis in AML,” the investigators noted in their report.

There was a numerical benefit in OS at 12 months – the preplanned primary outcome – but it was not statistically significant. At 18 months, however, and after adjustment for a higher rate of secondary AML in the venetoclax arm and other confounders in a post hoc analysis, survival differences reached significance. The 4.3-month OS benefit with the combination translated into a 30% reduction in the risk of death (hazard ratio, 0.70; 95% confidence interval, 0.50-0.99; P = .04)

Survival outcomes “were particularly promising for patient subgroups with NPM1- (median OS, not reached) and IDH1/2-mutant AML (median OS, 19.4 months),” the team noted.

Complete remission (CR) were 48% in the venetoclax arm, compared with 13% in the placebo group, and 34% of venetoclax patients versus 3% of placebo patients went into remission after their first cycle. Venetoclax subjects also had longer median event free survival (4.7 months vs. 2 months); higher rates of red blood cell and platelet transfusion independence (37% vs. 16%); and higher rates of cytometric minimal residual disease levels below 0.1% (6% vs. 1%).

The findings correlated with “strong improvements” in patient-reported outcomes, including fatigue and quality of life, the investigators reported.
 

Risk mitigation

Grade 3 or higher adverse events (AEs) included febrile neutropenia (32% in the venetoclax arm versus 29% in the placebo group), neutropenia (47% venetoclax vs. 16% placebo), thrombocytopenia (45% vs. 37%), and anemia (25% vs. 22%). The eight cases of tumor lysis syndrome (TLS) were all in the venetoclax arm. Grade 3 or higher bleeding was higher in the venetoclax arm (11% versus 7%), but the incidence of fatal bleeding was similar between the groups (1.4% venetoclax versus 1.5%).

“Although the venetoclax arm showed modest increases in hematologic AEs, the rate of AEs leading to treatment discontinuation (24% vs. 25%) and the rate of serious AEs such as pneumonia” and sepsis “were nearly identical between” the arms, the team said.

The combination “is more myelosuppressive,” but the effects “were mostly mitigated by venetoclax dose interruptions and reductions.” To mitigate the TLS risk, patients were hospitalized for TLS evaluation and prophylaxis during the 4-day venetoclax ramp-up in the first treatment cycle and for 24 hours after the 600-mg target was reached. “I think this is an extremely important measure to avoid this small but important complication,” Dr. Wei said at the meeting.
 

A moderate step forward

Dr. Lowenberg and Dr. Huls noted in their commentary that, despite the favorable outcomes, “the results are still sobering with a rapid drop of the survival curves to values of [around] 25% or less within 18 months, and event-free survival rates even falling to considerably lower levels.”

Also, there was a “weak correlation between the relatively wide differences in comparative CR/CRi rates and the much smaller differences in survival,” perhaps “due to a limited depth of the complete responses following venetoclax-LDAC therapy or the early development of therapeutic resistance,” they said.

The commentary also noted another option, adding the hedgehog pathway inhibitor glasdegib, instead of venetoclax, to LDAC. It also improved survival in a similar randomized study in unfit AML and high-risk myelodysplastic syndrome patients, from a median survival of 4.9 months with LDAC alone to 8.8 months with the combination (Leukemia. 2019 Feb;33(2):379-389. doi: 10.1038/s41375-018-0312-9).
 

Dueling regimens

Another alternative approach – venetoclax plus the HMA agent azacitidine – garnered a lot of attention at the meeting when it was reported that the combination had a median overall survival of 14.7 months, versus 9.6 months with azacitidine alone, in patients ineligible for intensive chemotherapy. CR/CRi rates were 66% with the combination, versus 28%.

“It seems like the results were better with the combination of venetoclax and azacitidine” than venetoclax plus LDAC, said Gunnar Juliusson, MD, PhD, of Lund (Sweden) University, who moderated Dr. Wei’s presentation.

He wanted to know if there was a way to identify patients who would do better on one regimen versus the other and was curious about the fact that the azacitidine study used a dose of 400 mg venetoclax, instead of 600 mg.

Dr. Wei noted the high incidence of poor prognostic factors in his study, including prior HMA treatment in 20%, but also that “we don’t know for sure” if there’s a clinically meaningful benefit with the higher dose.

He also said the optimal number of venetoclax cycles for best response is unknown. For now, treatment is “recommend until either [disease] progression, dose intolerance, or patient or physician preference,” he noted. Venetoclax subjects in his study had a median of four treatment cycles versus two in the placebo group. Combination patients in the azacitidine study had a median of seven cycles versus 4.5 with placebo.

Venetoclax already carries an indication in the United States in combination with azacitidine, decitabine, or LDAC for newly-diagnosed AML in adults 75 years or older or who have comorbidities that preclude use of intensive induction chemotherapy, at a daily dosage of 400 mg with HMAs and 600 mg with LDAC.

Labeling notes that “continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials.”

Both venetoclax trials were sponsored by the drug’s maker, AbbVie, which was involved with data interpretation and other matters. Dr. Wei is a consultant for and receives research funding from the company and also receives royalty payments in relation to venetoclax. The commentators did not have any competing financial interests. Disclosures, if any, were not reported for Dr. Juliusson.
 

aotto@mdedge.com

SOURCE: Wei AH et al. EHA Congress, Abstract S136.

Azacitidine plus enasidenib improved complete and overall responses in newly diagnosed acute myelogenous leukemia with isocitrate dehydrogenase 2 gene mutations, compared with azacitidine alone, but it did not improve overall survival in an open-label, phase 2 trial reported at the virtual annual congress of the European Hematology Association.

“Given the very high cost of” enasidenib, and the lack of survival benefit, Gunnar Juliusson, MD, PhD, of Lund University, Sweden, who moderated the study presentation, wondered if it might make more sense to hold enasidenib in reserve until after progression on azacitidine.

“The challenge is going to be exactly” that, “trying to figure out [if] you use both things together” or in sequence. “You can look at it in both ways,” said lead investigator Courtney DiNardo, MD, associate professor in the department of leukemia at the University of Texas MD Anderson Cancer Center, Houston.

“We do know” that with enasidenib monotherapy, there’s “a decrement in the rates of remission and in the duration of response” and overall survival in the salvage setting, so there’s “a clear rationale to give it earlier rather than later,” but “I think this study in some ways provides a few more questions than it really answers,” she said at the meeting.

About 15% of AML patients have leukemogenic isocitrate dehydrogenase 2 (IDH2) mutations; enasidenib, an oral small molecule, inhibits the mutant enzyme. The older AML patients are, the more likely they are to have an IDH2 mutation, so the work “is relevant to our older chemotherapy ineligible population,” Dr. DiNardo said.

The trial was prompted by preclinical indications of synergy with azacitidine; alone, each agent has an overall response rate of about 30% in newly diagnosed AML, and a complete remission (CR) rate of about 20%, she explained.

Her team randomized 68 adults with newly diagnosed AML and an IDH2 mutation to enasidenib 100 mg daily on a 28-day cycle with subcutaneous azacitidine 75 mg/m² for 7 days during the cycle, and 33 others to just the azacitidine alone.

Their subjects were ineligible for intensive chemotherapy and had intermediate to poor risk cytogenetics. The median age was 75 years, and Eastern Cooperative Oncology Group performance scores were 2 or less.

The overall response rate was 71% with the combination and 42% in the azacitidine alone arm (P = .0064). Fifty-three percent of combination patients, but 12% of azacitidine alone subjects, had complete remissions (P = .0001). The median duration of response with combination therapy was 24.1 months, versus 12.1 months.

Enasidenib plus azacitidine subjects also had greater drops in mutant IDH2 variant allele frequency (median 83.4% versus 17.7%, P < .01) and levels of the downstream oncometabolite 2-hydroxyglutarate (97.8% versus 54.3%; P < .01).

However, median OS was 22 months in both arms (HR 0.99, 95% CI 0.52, 1.87, P = .97). Although median event-free survival favored the combination – 17.2 months versus 10.8 – the results were not statistically significant (HR 0.59, 95% CI 0.30, 1.17, P = .13).

A possible reason for the lack of survival benefit, Dr. DiNardo said, was that seven azacitidine-alone patients (21%) went on to enasidenib after leaving the study, most commonly for disease progression, which occurred in 31% of combination patients versus 52% in the azacitidine-alone arm.

Combination subjects had a median of 10 treatment cycles, vs. 7 in the azacitidine-alone group. Grade 3-4 adverse events included thrombocytopenia (37% combination, 19% azacitidine-alone), neutropenia (35% vs. 22%), anemia (19% vs. 22%), and febrile neutropenia (15% vs. 16%). Grade 3-4 infections were more common with azacitidine monotherapy (31% vs. 18%).

Twelve enasidenib/azacitidine subjects (18%) developed isocitrate dehydrogenase differentiation syndrome, a complication that carries a black box warning in enasidenib’s label.

The work was funded by enasidenib marketer Celgene. Dr. DiNardo is an adviser to, and receives research funding from, the company. Dr. Juliusson’s disclosures, if any, were not reported.
 

SOURCE: DiNardo CD et al. EHA Congress, abstract S139.

Azacitidine plus enasidenib improved complete and overall responses in newly diagnosed acute myelogenous leukemia with isocitrate dehydrogenase 2 gene mutations, compared with azacitidine alone, but it did not improve overall survival in an open-label, phase 2 trial reported at the virtual annual congress of the European Hematology Association.

“Given the very high cost of” enasidenib, and the lack of survival benefit, Gunnar Juliusson, MD, PhD, of Lund University, Sweden, who moderated the study presentation, wondered if it might make more sense to hold enasidenib in reserve until after progression on azacitidine.

“The challenge is going to be exactly” that, “trying to figure out [if] you use both things together” or in sequence. “You can look at it in both ways,” said lead investigator Courtney DiNardo, MD, associate professor in the department of leukemia at the University of Texas MD Anderson Cancer Center, Houston.

“We do know” that with enasidenib monotherapy, there’s “a decrement in the rates of remission and in the duration of response” and overall survival in the salvage setting, so there’s “a clear rationale to give it earlier rather than later,” but “I think this study in some ways provides a few more questions than it really answers,” she said at the meeting.

About 15% of AML patients have leukemogenic isocitrate dehydrogenase 2 (IDH2) mutations; enasidenib, an oral small molecule, inhibits the mutant enzyme. The older AML patients are, the more likely they are to have an IDH2 mutation, so the work “is relevant to our older chemotherapy ineligible population,” Dr. DiNardo said.

The trial was prompted by preclinical indications of synergy with azacitidine; alone, each agent has an overall response rate of about 30% in newly diagnosed AML, and a complete remission (CR) rate of about 20%, she explained.

Her team randomized 68 adults with newly diagnosed AML and an IDH2 mutation to enasidenib 100 mg daily on a 28-day cycle with subcutaneous azacitidine 75 mg/m² for 7 days during the cycle, and 33 others to just the azacitidine alone.

Their subjects were ineligible for intensive chemotherapy and had intermediate to poor risk cytogenetics. The median age was 75 years, and Eastern Cooperative Oncology Group performance scores were 2 or less.

The overall response rate was 71% with the combination and 42% in the azacitidine alone arm (P = .0064). Fifty-three percent of combination patients, but 12% of azacitidine alone subjects, had complete remissions (P = .0001). The median duration of response with combination therapy was 24.1 months, versus 12.1 months.

Enasidenib plus azacitidine subjects also had greater drops in mutant IDH2 variant allele frequency (median 83.4% versus 17.7%, P < .01) and levels of the downstream oncometabolite 2-hydroxyglutarate (97.8% versus 54.3%; P < .01).

However, median OS was 22 months in both arms (HR 0.99, 95% CI 0.52, 1.87, P = .97). Although median event-free survival favored the combination – 17.2 months versus 10.8 – the results were not statistically significant (HR 0.59, 95% CI 0.30, 1.17, P = .13).

A possible reason for the lack of survival benefit, Dr. DiNardo said, was that seven azacitidine-alone patients (21%) went on to enasidenib after leaving the study, most commonly for disease progression, which occurred in 31% of combination patients versus 52% in the azacitidine-alone arm.

Combination subjects had a median of 10 treatment cycles, vs. 7 in the azacitidine-alone group. Grade 3-4 adverse events included thrombocytopenia (37% combination, 19% azacitidine-alone), neutropenia (35% vs. 22%), anemia (19% vs. 22%), and febrile neutropenia (15% vs. 16%). Grade 3-4 infections were more common with azacitidine monotherapy (31% vs. 18%).

Twelve enasidenib/azacitidine subjects (18%) developed isocitrate dehydrogenase differentiation syndrome, a complication that carries a black box warning in enasidenib’s label.

The work was funded by enasidenib marketer Celgene. Dr. DiNardo is an adviser to, and receives research funding from, the company. Dr. Juliusson’s disclosures, if any, were not reported.
 

SOURCE: DiNardo CD et al. EHA Congress, abstract S139.

Azacitidine plus enasidenib improved complete and overall responses in newly diagnosed acute myelogenous leukemia with isocitrate dehydrogenase 2 gene mutations, compared with azacitidine alone, but it did not improve overall survival in an open-label, phase 2 trial reported at the virtual annual congress of the European Hematology Association.

“Given the very high cost of” enasidenib, and the lack of survival benefit, Gunnar Juliusson, MD, PhD, of Lund University, Sweden, who moderated the study presentation, wondered if it might make more sense to hold enasidenib in reserve until after progression on azacitidine.

“The challenge is going to be exactly” that, “trying to figure out [if] you use both things together” or in sequence. “You can look at it in both ways,” said lead investigator Courtney DiNardo, MD, associate professor in the department of leukemia at the University of Texas MD Anderson Cancer Center, Houston.

“We do know” that with enasidenib monotherapy, there’s “a decrement in the rates of remission and in the duration of response” and overall survival in the salvage setting, so there’s “a clear rationale to give it earlier rather than later,” but “I think this study in some ways provides a few more questions than it really answers,” she said at the meeting.

About 15% of AML patients have leukemogenic isocitrate dehydrogenase 2 (IDH2) mutations; enasidenib, an oral small molecule, inhibits the mutant enzyme. The older AML patients are, the more likely they are to have an IDH2 mutation, so the work “is relevant to our older chemotherapy ineligible population,” Dr. DiNardo said.

The trial was prompted by preclinical indications of synergy with azacitidine; alone, each agent has an overall response rate of about 30% in newly diagnosed AML, and a complete remission (CR) rate of about 20%, she explained.

Her team randomized 68 adults with newly diagnosed AML and an IDH2 mutation to enasidenib 100 mg daily on a 28-day cycle with subcutaneous azacitidine 75 mg/m² for 7 days during the cycle, and 33 others to just the azacitidine alone.

Their subjects were ineligible for intensive chemotherapy and had intermediate to poor risk cytogenetics. The median age was 75 years, and Eastern Cooperative Oncology Group performance scores were 2 or less.

The overall response rate was 71% with the combination and 42% in the azacitidine alone arm (P = .0064). Fifty-three percent of combination patients, but 12% of azacitidine alone subjects, had complete remissions (P = .0001). The median duration of response with combination therapy was 24.1 months, versus 12.1 months.

Enasidenib plus azacitidine subjects also had greater drops in mutant IDH2 variant allele frequency (median 83.4% versus 17.7%, P < .01) and levels of the downstream oncometabolite 2-hydroxyglutarate (97.8% versus 54.3%; P < .01).

However, median OS was 22 months in both arms (HR 0.99, 95% CI 0.52, 1.87, P = .97). Although median event-free survival favored the combination – 17.2 months versus 10.8 – the results were not statistically significant (HR 0.59, 95% CI 0.30, 1.17, P = .13).

A possible reason for the lack of survival benefit, Dr. DiNardo said, was that seven azacitidine-alone patients (21%) went on to enasidenib after leaving the study, most commonly for disease progression, which occurred in 31% of combination patients versus 52% in the azacitidine-alone arm.

Combination subjects had a median of 10 treatment cycles, vs. 7 in the azacitidine-alone group. Grade 3-4 adverse events included thrombocytopenia (37% combination, 19% azacitidine-alone), neutropenia (35% vs. 22%), anemia (19% vs. 22%), and febrile neutropenia (15% vs. 16%). Grade 3-4 infections were more common with azacitidine monotherapy (31% vs. 18%).

Twelve enasidenib/azacitidine subjects (18%) developed isocitrate dehydrogenase differentiation syndrome, a complication that carries a black box warning in enasidenib’s label.

The work was funded by enasidenib marketer Celgene. Dr. DiNardo is an adviser to, and receives research funding from, the company. Dr. Juliusson’s disclosures, if any, were not reported.
 

SOURCE: DiNardo CD et al. EHA Congress, abstract S139.

Magrolimab plus azacitidine (AZA) improved outcomes in acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) patients according to the results of a phase 1b study (NCT03248479) presented at the virtual ASCO meeting. The combo especially was promising for the underserved patient population that have the TP53 (p53) mutation.

Magrolimab is a first-in-kind IgG anti-CD47 monoclonal antibody that promotes the elimination of tumor cells through macrophage phagocytosis. CD47 is a “do not eat me” signal on cancer cells that allows the cells to evade macrophages. Its increased expression is predictive of a worse outcome in AML patients, according to David A. Sallman, MD, of the Moffitt Cancer Center, Tampa, Fla., and colleagues.

Dr. Sallman presented the results of a study examining whether magrolimab would provide a synergistic benefit when combined with AZA (which induces other prophagocytic “eat me” signals such as calreticulin on cancer cells). The primary objectives of the study were to examine the safety of magrolimab alone or with AZA, and to assess the efficacy of the magrolimab/AZA combo in 29 untreated AML patients and 39 untreated MDS patients. The majority of both the MDS and AML patients were poor cytogenetic risk at 64% and 72%, respectively. Mutant p53 was present in 13% of the MDS patients and 45% of the AML patients.

No deaths occurred in the first 60 days of the study among either the MDS or AML patients and discontinuation of treatment because of drug-related adverse events was seen in only one of the patients (1.5%) treated with magrolimab/AZA. There was no significant neutropenia or thrombocytopenia caused by the therapy seen, and the majority of the patients improved their neutrophil and platelet counts while on therapy.

Anemia from CD47 blockade was mitigated by the use of a priming dose of magrolimab coupled to a maintenance-dose regimen, resulting in a mild hemoglobin drop on the first dose, which returned to baseline with a majority of patients experiencing significant hemoglobin improvement and a decrease in transfusion frequency over time, according to Dr. Sallman and his colleagues.

The results showed that magrolimab/AZA induced a 91% overall response rate (ORR), with a 42% complete remission (CR) that increased to 56% at 6 months, in the MDS patients. AML patients experienced a 64% ORR (56% CR/CRi [CR with incomplete hematological remission]). These results compare favorably with the CR rate of 6%-17% rate seen for AZA monotherapy, according to Dr. Sallman.

Red blood cell transfusion independence was achieved in 58% of the MDS patients and 64% of the AML patients, and a complete cytogenetic response was seen in 35% and 50% of the MDS and AML patients, respectively.

The combined treatment was especially effective in the patients with p53 mutations, with an overall response rate of 75% for both MDS and AML, and a complete response of 42% and 50%, respectively. During the reported time of the study, the median survival was not reached, which compares favorably with current therapies, according to Dr. Sallman.

“Specifically looking at a very-high-risk p53-mutant subset, complete remissions have been observed in the majority of patients. And again, these have been durable. Based on all of these data, expansion cohorts both in MDS and p53 and AML continue to accrue with registrational studies in progress for MDS and planned for p53-mutant AML,” Dr. Sallman concluded.

The trial was sponsored by Gilead Sciences, and funding was obtained from the California Institute for Regenerative Medicine. Dr. Sallman disclosed that he received research funding from Celgene and has acted in a consulting or advisory role for Agios, argenx, and Celyad. He was also on the speaker’s bureau for a variety of pharmaceutical/biotech companies.

mlesney@mdedge.com

SOURCE: Sallman DA et al. ASCO 2020, Abstract 7507.

Magrolimab plus azacitidine (AZA) improved outcomes in acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) patients according to the results of a phase 1b study (NCT03248479) presented at the virtual ASCO meeting. The combo especially was promising for the underserved patient population that have the TP53 (p53) mutation.

Magrolimab is a first-in-kind IgG anti-CD47 monoclonal antibody that promotes the elimination of tumor cells through macrophage phagocytosis. CD47 is a “do not eat me” signal on cancer cells that allows the cells to evade macrophages. Its increased expression is predictive of a worse outcome in AML patients, according to David A. Sallman, MD, of the Moffitt Cancer Center, Tampa, Fla., and colleagues.

Dr. Sallman presented the results of a study examining whether magrolimab would provide a synergistic benefit when combined with AZA (which induces other prophagocytic “eat me” signals such as calreticulin on cancer cells). The primary objectives of the study were to examine the safety of magrolimab alone or with AZA, and to assess the efficacy of the magrolimab/AZA combo in 29 untreated AML patients and 39 untreated MDS patients. The majority of both the MDS and AML patients were poor cytogenetic risk at 64% and 72%, respectively. Mutant p53 was present in 13% of the MDS patients and 45% of the AML patients.

No deaths occurred in the first 60 days of the study among either the MDS or AML patients and discontinuation of treatment because of drug-related adverse events was seen in only one of the patients (1.5%) treated with magrolimab/AZA. There was no significant neutropenia or thrombocytopenia caused by the therapy seen, and the majority of the patients improved their neutrophil and platelet counts while on therapy.

Anemia from CD47 blockade was mitigated by the use of a priming dose of magrolimab coupled to a maintenance-dose regimen, resulting in a mild hemoglobin drop on the first dose, which returned to baseline with a majority of patients experiencing significant hemoglobin improvement and a decrease in transfusion frequency over time, according to Dr. Sallman and his colleagues.

The results showed that magrolimab/AZA induced a 91% overall response rate (ORR), with a 42% complete remission (CR) that increased to 56% at 6 months, in the MDS patients. AML patients experienced a 64% ORR (56% CR/CRi [CR with incomplete hematological remission]). These results compare favorably with the CR rate of 6%-17% rate seen for AZA monotherapy, according to Dr. Sallman.

Red blood cell transfusion independence was achieved in 58% of the MDS patients and 64% of the AML patients, and a complete cytogenetic response was seen in 35% and 50% of the MDS and AML patients, respectively.

The combined treatment was especially effective in the patients with p53 mutations, with an overall response rate of 75% for both MDS and AML, and a complete response of 42% and 50%, respectively. During the reported time of the study, the median survival was not reached, which compares favorably with current therapies, according to Dr. Sallman.

“Specifically looking at a very-high-risk p53-mutant subset, complete remissions have been observed in the majority of patients. And again, these have been durable. Based on all of these data, expansion cohorts both in MDS and p53 and AML continue to accrue with registrational studies in progress for MDS and planned for p53-mutant AML,” Dr. Sallman concluded.

The trial was sponsored by Gilead Sciences, and funding was obtained from the California Institute for Regenerative Medicine. Dr. Sallman disclosed that he received research funding from Celgene and has acted in a consulting or advisory role for Agios, argenx, and Celyad. He was also on the speaker’s bureau for a variety of pharmaceutical/biotech companies.

mlesney@mdedge.com

SOURCE: Sallman DA et al. ASCO 2020, Abstract 7507.

Magrolimab plus azacitidine (AZA) improved outcomes in acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) patients according to the results of a phase 1b study (NCT03248479) presented at the virtual ASCO meeting. The combo especially was promising for the underserved patient population that have the TP53 (p53) mutation.

Magrolimab is a first-in-kind IgG anti-CD47 monoclonal antibody that promotes the elimination of tumor cells through macrophage phagocytosis. CD47 is a “do not eat me” signal on cancer cells that allows the cells to evade macrophages. Its increased expression is predictive of a worse outcome in AML patients, according to David A. Sallman, MD, of the Moffitt Cancer Center, Tampa, Fla., and colleagues.

Dr. Sallman presented the results of a study examining whether magrolimab would provide a synergistic benefit when combined with AZA (which induces other prophagocytic “eat me” signals such as calreticulin on cancer cells). The primary objectives of the study were to examine the safety of magrolimab alone or with AZA, and to assess the efficacy of the magrolimab/AZA combo in 29 untreated AML patients and 39 untreated MDS patients. The majority of both the MDS and AML patients were poor cytogenetic risk at 64% and 72%, respectively. Mutant p53 was present in 13% of the MDS patients and 45% of the AML patients.

No deaths occurred in the first 60 days of the study among either the MDS or AML patients and discontinuation of treatment because of drug-related adverse events was seen in only one of the patients (1.5%) treated with magrolimab/AZA. There was no significant neutropenia or thrombocytopenia caused by the therapy seen, and the majority of the patients improved their neutrophil and platelet counts while on therapy.

Anemia from CD47 blockade was mitigated by the use of a priming dose of magrolimab coupled to a maintenance-dose regimen, resulting in a mild hemoglobin drop on the first dose, which returned to baseline with a majority of patients experiencing significant hemoglobin improvement and a decrease in transfusion frequency over time, according to Dr. Sallman and his colleagues.

The results showed that magrolimab/AZA induced a 91% overall response rate (ORR), with a 42% complete remission (CR) that increased to 56% at 6 months, in the MDS patients. AML patients experienced a 64% ORR (56% CR/CRi [CR with incomplete hematological remission]). These results compare favorably with the CR rate of 6%-17% rate seen for AZA monotherapy, according to Dr. Sallman.

Red blood cell transfusion independence was achieved in 58% of the MDS patients and 64% of the AML patients, and a complete cytogenetic response was seen in 35% and 50% of the MDS and AML patients, respectively.

The combined treatment was especially effective in the patients with p53 mutations, with an overall response rate of 75% for both MDS and AML, and a complete response of 42% and 50%, respectively. During the reported time of the study, the median survival was not reached, which compares favorably with current therapies, according to Dr. Sallman.

“Specifically looking at a very-high-risk p53-mutant subset, complete remissions have been observed in the majority of patients. And again, these have been durable. Based on all of these data, expansion cohorts both in MDS and p53 and AML continue to accrue with registrational studies in progress for MDS and planned for p53-mutant AML,” Dr. Sallman concluded.

The trial was sponsored by Gilead Sciences, and funding was obtained from the California Institute for Regenerative Medicine. Dr. Sallman disclosed that he received research funding from Celgene and has acted in a consulting or advisory role for Agios, argenx, and Celyad. He was also on the speaker’s bureau for a variety of pharmaceutical/biotech companies.

mlesney@mdedge.com

SOURCE: Sallman DA et al. ASCO 2020, Abstract 7507.

Adult patients with Burkitt lymphoma can achieve equally sound survival outcomes with dose-adjusted chemotherapy versus high-intensity regimens, but can do so while avoiding the severe toxicities, U.S. study data shows.

Courtesy Wikimedia Commons/Ed Uthman, MD/Creative Commons License

Although Burkitt lymphoma is the most common B-cell non-Hodgkin lymphoma in children, it accounts for only 1% to 2% of adult lymphoma cases.

Highly dose-intensive chemotherapy regimens, developed for children and young adults, have rendered the disease curable. But older patients in particular, and patients with comorbidities such as HIV, can suffer severe adverse effects, as well as late sequelae like second malignancies.

Mark Roschewski, MD, from the lymphoid malignancies branch at the National Cancer Institute in Bethesda, Md., and colleagues therefore examined whether a dose-adjusted regimen would maintain outcomes while reducing toxicities.

Tailoring treatment with etoposide, doxorubicin, and vincristine with prednisone, cyclophosphamide, and rituximab (EPOCH-R) to whether patients had high- or low-risk disease, they achieved 4-year survival rates of higher than 85%.

The research, published by the Journal of Clinical Oncology, also showed that patients taking the regimen, which was well tolerated, had low rates of relapse in the central nervous system.

The team reports that their results with the dose-adjusted regimen “significantly improve on the complexity, cost, and toxicity profile of other regimens,” also highlighting that it is administered on an outpatient basis.

As the outcomes also “compare favorably” with those with high intensity regimens, they say the findings “support our treatment strategies to ameliorate toxicity while maintaining efficacy.”

Importantly, they suggest highly dose-intensive chemotherapy is unnecessary for cure, and carefully defined low-risk patients may be treated with limited chemotherapy.

Dr. Roschewski said in an interview that, in patients aged 40 years and older, dose-adjusted EPOCH-R is “probably the preferred choice,” despite its “weakness” in controlling the disease in patients with active CNS involvement.

However, the “real question” is what to use in younger patients, Dr. Roschewski said, as the “unknown” is whether the additional magnitude of a high-intensity regimen that “gets into the CNS” outweighs the risk of toxicities.

“What was important about our study,” he said, was that patients with CNS involvement “did the worst but it was equally split among patients that died of toxicity and patients that progressed.”

In other words, each choice increases one risk while decreasing another. “So I would have to have that discussion with the patient, and individual patient decisions are typically based on the details,” said Dr. Roschewski.

One issue, however, that could limit the adoption of dose-adjusted EPOCH-R is that, without a randomized study comparing it directly with a high-intensity regimen, clinicians may to stick to what they know.

Dr. Roschewski said that “this is particularly true of more experienced clinicians.”

“They’re less likely, I think, to adopt something else outside of a randomized study because our natural inclination with this disease has always been dose intensity is critical. ... This is a dogma, and to shift from that probably does require a higher level of evidence, at least for some practitioners,” he explained.
 

Further study details

Following a pilot study of dose-adjusted EPOCH-R in 30 adult patients in which the authors say the regimen showed “high efficacy,” they enrolled 113 patients with untreated Burkitt lymphoma at 22 centers between June 2010 and May 2017.

The patients were divided into low-risk and high-risk categories, with low-risk defined as stage 1 or 2 disease, normal lactate dehydrogenase levels, ECOG performance status ≤ 1, and no tumor mass ≥ 7 cm.

High-risk patients were given six cycles of dose-adjusted EPOCH-R (with rituximab on day 1 only) along with CNS prophylaxis or active therapy with intrathecal methotrexate.

In contrast, low-risk patients were given two cycles of dose-adjusted EPOCH-R, with rituximab on days 1 and 5, followed by positron emission tomography.

If that was negative, the patients had one additional treatment cycle and no CNS prophylaxis, but if it was positive, they were given four additional cycles, plus intrathecal methotrexate.

Of the 113 patients enrolled, 79% were male, median age was 49 years, and 62% were aged at least 40 years, including 26% aged at least 60 years.

The team determined that 13% of the patients were of low risk, 87% were high risk, and 11% had cerebrospinal fluid involvement. One-quarter (24.7%) were HIV positive, with a median CD4+ T-cell count of 268 cells/mm³.

The majority (87%) of low-risk patients received three treatment cycles, and 82% of high-risk patents were administered six treatment cycles.

Over a median follow-up of 58.7 months (4.9 years), the 4-year event-free survival (EFS) rate across the whole cohort was 84.5% and overall survival was 87%.

At the time of analysis, all low-risk patients were in remission; among high-risk patients, the 4-year EFS was 82.1% and overall survival was 84.9%.

The team reports that treatment was equally effective across age groups, and irrespective of HIV status and International Prognostic Index risk group.

Only 2% of high-risk patients with no pretreatment evidence of CNS involvement had relapses in the brain parenchyma. Just over half (55%) of patients with cerebrospinal fluid involvement at presentation experienced disease progression or died.

Five patients died of treatment-related toxicity. Grade 3/4 thrombocytopenia occurred during 17% of cycles, and febrile neutropenia was seen during 16%. Tumor lysis syndrome was rare, occurring in 5% of patients.

Next, the researchers are planning on focusing on CNS disease, looking at EPOCH-R as the backbone and adding intrathecal methotrexate and an additional targeted agent with known CNS penetration.

Dr. Roschewski said that is “a very attractive strategy and ... we will initiate enrollment in that study probably in the next couple of months here at the NCI,” he added, noting that it will be an early phase 1 study.

Another issue he identified that “doesn’t get spoken about quite as much but I do think is important is potentially working on supportive care guidelines for how we manage these patients.” Dr. Roschewski explained, “One of the things you see over and over in these Burkitt lymphoma studies is that some patients don’t make it through therapy because they’re so sick at the beginning, and they have certain risks.

“I think simply improving that type of care, independent of what regimen is used, can potentially improve the outcomes across patient groups.”

The study was funded by the National Cancer Institute, National Institutes of Health, AIDS Malignancy Consortium, and the Cancer Therapy Evaluation Program and Lymphoid Malignancies Branch. The authors have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Adult patients with Burkitt lymphoma can achieve equally sound survival outcomes with dose-adjusted chemotherapy versus high-intensity regimens, but can do so while avoiding the severe toxicities, U.S. study data shows.

Courtesy Wikimedia Commons/Ed Uthman, MD/Creative Commons License

Although Burkitt lymphoma is the most common B-cell non-Hodgkin lymphoma in children, it accounts for only 1% to 2% of adult lymphoma cases.

Highly dose-intensive chemotherapy regimens, developed for children and young adults, have rendered the disease curable. But older patients in particular, and patients with comorbidities such as HIV, can suffer severe adverse effects, as well as late sequelae like second malignancies.

Mark Roschewski, MD, from the lymphoid malignancies branch at the National Cancer Institute in Bethesda, Md., and colleagues therefore examined whether a dose-adjusted regimen would maintain outcomes while reducing toxicities.

Tailoring treatment with etoposide, doxorubicin, and vincristine with prednisone, cyclophosphamide, and rituximab (EPOCH-R) to whether patients had high- or low-risk disease, they achieved 4-year survival rates of higher than 85%.

The research, published by the Journal of Clinical Oncology, also showed that patients taking the regimen, which was well tolerated, had low rates of relapse in the central nervous system.

The team reports that their results with the dose-adjusted regimen “significantly improve on the complexity, cost, and toxicity profile of other regimens,” also highlighting that it is administered on an outpatient basis.

As the outcomes also “compare favorably” with those with high intensity regimens, they say the findings “support our treatment strategies to ameliorate toxicity while maintaining efficacy.”

Importantly, they suggest highly dose-intensive chemotherapy is unnecessary for cure, and carefully defined low-risk patients may be treated with limited chemotherapy.

Dr. Roschewski said in an interview that, in patients aged 40 years and older, dose-adjusted EPOCH-R is “probably the preferred choice,” despite its “weakness” in controlling the disease in patients with active CNS involvement.

However, the “real question” is what to use in younger patients, Dr. Roschewski said, as the “unknown” is whether the additional magnitude of a high-intensity regimen that “gets into the CNS” outweighs the risk of toxicities.

“What was important about our study,” he said, was that patients with CNS involvement “did the worst but it was equally split among patients that died of toxicity and patients that progressed.”

In other words, each choice increases one risk while decreasing another. “So I would have to have that discussion with the patient, and individual patient decisions are typically based on the details,” said Dr. Roschewski.

One issue, however, that could limit the adoption of dose-adjusted EPOCH-R is that, without a randomized study comparing it directly with a high-intensity regimen, clinicians may to stick to what they know.

Dr. Roschewski said that “this is particularly true of more experienced clinicians.”

“They’re less likely, I think, to adopt something else outside of a randomized study because our natural inclination with this disease has always been dose intensity is critical. ... This is a dogma, and to shift from that probably does require a higher level of evidence, at least for some practitioners,” he explained.
 

Further study details

Following a pilot study of dose-adjusted EPOCH-R in 30 adult patients in which the authors say the regimen showed “high efficacy,” they enrolled 113 patients with untreated Burkitt lymphoma at 22 centers between June 2010 and May 2017.

The patients were divided into low-risk and high-risk categories, with low-risk defined as stage 1 or 2 disease, normal lactate dehydrogenase levels, ECOG performance status ≤ 1, and no tumor mass ≥ 7 cm.

High-risk patients were given six cycles of dose-adjusted EPOCH-R (with rituximab on day 1 only) along with CNS prophylaxis or active therapy with intrathecal methotrexate.

In contrast, low-risk patients were given two cycles of dose-adjusted EPOCH-R, with rituximab on days 1 and 5, followed by positron emission tomography.

If that was negative, the patients had one additional treatment cycle and no CNS prophylaxis, but if it was positive, they were given four additional cycles, plus intrathecal methotrexate.

Of the 113 patients enrolled, 79% were male, median age was 49 years, and 62% were aged at least 40 years, including 26% aged at least 60 years.

The team determined that 13% of the patients were of low risk, 87% were high risk, and 11% had cerebrospinal fluid involvement. One-quarter (24.7%) were HIV positive, with a median CD4+ T-cell count of 268 cells/mm³.

The majority (87%) of low-risk patients received three treatment cycles, and 82% of high-risk patents were administered six treatment cycles.

Over a median follow-up of 58.7 months (4.9 years), the 4-year event-free survival (EFS) rate across the whole cohort was 84.5% and overall survival was 87%.

At the time of analysis, all low-risk patients were in remission; among high-risk patients, the 4-year EFS was 82.1% and overall survival was 84.9%.

The team reports that treatment was equally effective across age groups, and irrespective of HIV status and International Prognostic Index risk group.

Only 2% of high-risk patients with no pretreatment evidence of CNS involvement had relapses in the brain parenchyma. Just over half (55%) of patients with cerebrospinal fluid involvement at presentation experienced disease progression or died.

Five patients died of treatment-related toxicity. Grade 3/4 thrombocytopenia occurred during 17% of cycles, and febrile neutropenia was seen during 16%. Tumor lysis syndrome was rare, occurring in 5% of patients.

Next, the researchers are planning on focusing on CNS disease, looking at EPOCH-R as the backbone and adding intrathecal methotrexate and an additional targeted agent with known CNS penetration.

Dr. Roschewski said that is “a very attractive strategy and ... we will initiate enrollment in that study probably in the next couple of months here at the NCI,” he added, noting that it will be an early phase 1 study.

Another issue he identified that “doesn’t get spoken about quite as much but I do think is important is potentially working on supportive care guidelines for how we manage these patients.” Dr. Roschewski explained, “One of the things you see over and over in these Burkitt lymphoma studies is that some patients don’t make it through therapy because they’re so sick at the beginning, and they have certain risks.

“I think simply improving that type of care, independent of what regimen is used, can potentially improve the outcomes across patient groups.”

The study was funded by the National Cancer Institute, National Institutes of Health, AIDS Malignancy Consortium, and the Cancer Therapy Evaluation Program and Lymphoid Malignancies Branch. The authors have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Adult patients with Burkitt lymphoma can achieve equally sound survival outcomes with dose-adjusted chemotherapy versus high-intensity regimens, but can do so while avoiding the severe toxicities, U.S. study data shows.

Courtesy Wikimedia Commons/Ed Uthman, MD/Creative Commons License

Although Burkitt lymphoma is the most common B-cell non-Hodgkin lymphoma in children, it accounts for only 1% to 2% of adult lymphoma cases.

Highly dose-intensive chemotherapy regimens, developed for children and young adults, have rendered the disease curable. But older patients in particular, and patients with comorbidities such as HIV, can suffer severe adverse effects, as well as late sequelae like second malignancies.

Mark Roschewski, MD, from the lymphoid malignancies branch at the National Cancer Institute in Bethesda, Md., and colleagues therefore examined whether a dose-adjusted regimen would maintain outcomes while reducing toxicities.

Tailoring treatment with etoposide, doxorubicin, and vincristine with prednisone, cyclophosphamide, and rituximab (EPOCH-R) to whether patients had high- or low-risk disease, they achieved 4-year survival rates of higher than 85%.

The research, published by the Journal of Clinical Oncology, also showed that patients taking the regimen, which was well tolerated, had low rates of relapse in the central nervous system.

The team reports that their results with the dose-adjusted regimen “significantly improve on the complexity, cost, and toxicity profile of other regimens,” also highlighting that it is administered on an outpatient basis.

As the outcomes also “compare favorably” with those with high intensity regimens, they say the findings “support our treatment strategies to ameliorate toxicity while maintaining efficacy.”

Importantly, they suggest highly dose-intensive chemotherapy is unnecessary for cure, and carefully defined low-risk patients may be treated with limited chemotherapy.

Dr. Roschewski said in an interview that, in patients aged 40 years and older, dose-adjusted EPOCH-R is “probably the preferred choice,” despite its “weakness” in controlling the disease in patients with active CNS involvement.

However, the “real question” is what to use in younger patients, Dr. Roschewski said, as the “unknown” is whether the additional magnitude of a high-intensity regimen that “gets into the CNS” outweighs the risk of toxicities.

“What was important about our study,” he said, was that patients with CNS involvement “did the worst but it was equally split among patients that died of toxicity and patients that progressed.”

In other words, each choice increases one risk while decreasing another. “So I would have to have that discussion with the patient, and individual patient decisions are typically based on the details,” said Dr. Roschewski.

One issue, however, that could limit the adoption of dose-adjusted EPOCH-R is that, without a randomized study comparing it directly with a high-intensity regimen, clinicians may to stick to what they know.

Dr. Roschewski said that “this is particularly true of more experienced clinicians.”

“They’re less likely, I think, to adopt something else outside of a randomized study because our natural inclination with this disease has always been dose intensity is critical. ... This is a dogma, and to shift from that probably does require a higher level of evidence, at least for some practitioners,” he explained.
 

Further study details

Following a pilot study of dose-adjusted EPOCH-R in 30 adult patients in which the authors say the regimen showed “high efficacy,” they enrolled 113 patients with untreated Burkitt lymphoma at 22 centers between June 2010 and May 2017.

The patients were divided into low-risk and high-risk categories, with low-risk defined as stage 1 or 2 disease, normal lactate dehydrogenase levels, ECOG performance status ≤ 1, and no tumor mass ≥ 7 cm.

High-risk patients were given six cycles of dose-adjusted EPOCH-R (with rituximab on day 1 only) along with CNS prophylaxis or active therapy with intrathecal methotrexate.

In contrast, low-risk patients were given two cycles of dose-adjusted EPOCH-R, with rituximab on days 1 and 5, followed by positron emission tomography.

If that was negative, the patients had one additional treatment cycle and no CNS prophylaxis, but if it was positive, they were given four additional cycles, plus intrathecal methotrexate.

Of the 113 patients enrolled, 79% were male, median age was 49 years, and 62% were aged at least 40 years, including 26% aged at least 60 years.

The team determined that 13% of the patients were of low risk, 87% were high risk, and 11% had cerebrospinal fluid involvement. One-quarter (24.7%) were HIV positive, with a median CD4+ T-cell count of 268 cells/mm³.

The majority (87%) of low-risk patients received three treatment cycles, and 82% of high-risk patents were administered six treatment cycles.

Over a median follow-up of 58.7 months (4.9 years), the 4-year event-free survival (EFS) rate across the whole cohort was 84.5% and overall survival was 87%.

At the time of analysis, all low-risk patients were in remission; among high-risk patients, the 4-year EFS was 82.1% and overall survival was 84.9%.

The team reports that treatment was equally effective across age groups, and irrespective of HIV status and International Prognostic Index risk group.

Only 2% of high-risk patients with no pretreatment evidence of CNS involvement had relapses in the brain parenchyma. Just over half (55%) of patients with cerebrospinal fluid involvement at presentation experienced disease progression or died.

Five patients died of treatment-related toxicity. Grade 3/4 thrombocytopenia occurred during 17% of cycles, and febrile neutropenia was seen during 16%. Tumor lysis syndrome was rare, occurring in 5% of patients.

Next, the researchers are planning on focusing on CNS disease, looking at EPOCH-R as the backbone and adding intrathecal methotrexate and an additional targeted agent with known CNS penetration.

Dr. Roschewski said that is “a very attractive strategy and ... we will initiate enrollment in that study probably in the next couple of months here at the NCI,” he added, noting that it will be an early phase 1 study.

Another issue he identified that “doesn’t get spoken about quite as much but I do think is important is potentially working on supportive care guidelines for how we manage these patients.” Dr. Roschewski explained, “One of the things you see over and over in these Burkitt lymphoma studies is that some patients don’t make it through therapy because they’re so sick at the beginning, and they have certain risks.

“I think simply improving that type of care, independent of what regimen is used, can potentially improve the outcomes across patient groups.”

The study was funded by the National Cancer Institute, National Institutes of Health, AIDS Malignancy Consortium, and the Cancer Therapy Evaluation Program and Lymphoid Malignancies Branch. The authors have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

For patients with high-risk chronic lymphocytic leukemia (CLL), first-line therapy with a triple combination of targeted agents showed encouraging response rates in the phase 2 CLL2-GIVe trial.

Among 41 patients with untreated CLL bearing deleterious TP53 mutations and/or the 17p chromosomal deletion who received the GIVe regimen consisting of obinutuzumab (Gazyva), ibrutinib (Imbruvica), and venetoclax (Venclexta), the complete response rate at final restaging was 58.5%, and 33 patients with a confirmed response were negative for minimal residual disease after a median follow-up of 18.6 months, reported Henriette Huber, MD, of University Hospital Ulm, Germany.

“The GIVe regimen is promising first-line therapy for patients with high-risk CLL,” she said in a presentation during the virtual annual congress of the European Hematology Association.

The overall safety profile of the combination was acceptable, she said, but added that “some higher-grade infections are of concern.” The rate of grade 3 or greater infections/infestations in the study was 19.5%.

Sound rationale (with caveat)

Another adverse event of concern is the rate of atrial fibrillation in the comparatively young patient population (median age 62), noted Alexey Danilov, MD, PhD, of City of Hope in Duarte Calif., who commented on the study for MDedge.

He pointed out that second-generation Bruton’s tyrosine kinase (BTK) inhibitors such as acalabrutinib (Calquence) may pose a lower risk of atrial fibrillation than the BTK inhibitor ibrutinib used in the CLL2-GIVe study.

In general, however, the rationale for the combination is sound, Dr. Danilov said.

“Of all the patient populations that we deal with within CLL, this probably would be most appropriate for this type of therapy. Patients with deletion 17p or TP53 mutations still represent an unmet medical need compared to other patients who don’t have those mutations,” he said.

Patients with CLL bearing the mutations have lower clinical response rates to novel therapies and generally do not respond well to chemoimmunotherapy, he said.

“The question becomes whether using these all at the same time, versus sequential strategies – using one drug and then after that, at relapse, another – is better, and obviously this trial doesn’t address that,” he said.
 

Three targets

The investigators enrolled 24 men and 17 women with untreated CLL with del(17p) and/or TP53 mutations and adequate organ function (creatinine clearance rate of more than 50 mL/min). The median age was 62 (range 35-85 years); 78% of patients had Binet stage B or C disease. The median Cumulative Illness Rating Scale (CIRS) score was 3 (range 0 to 8).

All patients received treatment with the combination for 6 months. The CD20 inhibitor obinutuzumab was given in a dose of 1,000 mg on days 1, 8 and 15 of cycle 1 and day 1 of cycles 2-6. The BTK inhibitor ibrutinib was given continuously at a dose of 420 mg per day beginning on the first day of the first cycle. Venetoclax, a B-cell lymphoma 2 (BCL-2) inhibitor, was started on day 22 of cycle 1, and was increased to 400 mg per day over 5 weeks until the end of cycle 12.

If patients achieved a complete remission (CR) or CR with incomplete recovery of blood counts (CRi) according to International Workshop on CLL criteria at final restaging (performed with imaging at the end of cycle 12 followed by bone marrow biopsy 2 months later), ibrutinib would be stopped beginning at cycle 15. Patients who did not have a CR or CRi would continue on ibrutinib until cycle 36.

Encouraging results

All but 3 of the 41 patients reached final restaging. Analyses of efficacy and safety included all 41 patients.

The CR/CRi rate at final restaging, the primary endpoint, was accomplished in 24 patients (58.8%), and 14 patients (34.1%) had a partial response.

Of the three patients for whom responses could not be assessed, two died (one from ovarian cancer which was retrospectively determined to have been present at enrollment, and one at cycle 9 from cardiac failure), and the third patient withdrew consent at cycle 10.

In all, 33 patients (80.5%) were MRD-negative in peripheral blood, 4 remained MRD positive, and 4 were not assessed. Per protocol, 22 patients with undetectable MRD and a CR or CRi discontinued therapy at week 15. An additional 13 patients also discontinued therapy because of adverse events or other reasons, and 6 remained on therapy beyond cycle 15.

The most frequent adverse events of any grade through the end of cycle 14 were gastrointestinal disorders in 83%, none higher than grade 2; infections and infestations in 70.7%, of which 19.5% were grade 3 or greater in severity; and blood and lymphatic system disorders in 58.5%, most of which (53.7%) were grade 3 or greater.

Cardiac disorders were reported in 19.5% of all patients, including 12.2% with atrial fibrillation; grade 3 or greater atrial fibrillation occurred in 2.4% of patients.

There was one case each of cerebral aspergillosis, progressive multifocal leukoencephalopathy (without PCR testing), urosepsis, staphylococcal sepsis and febrile infection.

Laboratory confirmed tumor lysis syndrome, all grade 3 or greater, was reported in 9.8% of patients. Infusion-related reactions were reported in 29.3% of patients, with a total of 7.3% being grade 3 or greater.

The trial was supported by Janssen-Cilag and Roche. Dr. Huber disclosed travel reimbursement from Novartis. Dr. Danilov disclosed consulting for AbbVie, Janssen, and Genentech.

SOURCE: Huber H et al. EHA Congress. Abstract S157.

For patients with high-risk chronic lymphocytic leukemia (CLL), first-line therapy with a triple combination of targeted agents showed encouraging response rates in the phase 2 CLL2-GIVe trial.

Among 41 patients with untreated CLL bearing deleterious TP53 mutations and/or the 17p chromosomal deletion who received the GIVe regimen consisting of obinutuzumab (Gazyva), ibrutinib (Imbruvica), and venetoclax (Venclexta), the complete response rate at final restaging was 58.5%, and 33 patients with a confirmed response were negative for minimal residual disease after a median follow-up of 18.6 months, reported Henriette Huber, MD, of University Hospital Ulm, Germany.

“The GIVe regimen is promising first-line therapy for patients with high-risk CLL,” she said in a presentation during the virtual annual congress of the European Hematology Association.

The overall safety profile of the combination was acceptable, she said, but added that “some higher-grade infections are of concern.” The rate of grade 3 or greater infections/infestations in the study was 19.5%.

Sound rationale (with caveat)

Another adverse event of concern is the rate of atrial fibrillation in the comparatively young patient population (median age 62), noted Alexey Danilov, MD, PhD, of City of Hope in Duarte Calif., who commented on the study for MDedge.

He pointed out that second-generation Bruton’s tyrosine kinase (BTK) inhibitors such as acalabrutinib (Calquence) may pose a lower risk of atrial fibrillation than the BTK inhibitor ibrutinib used in the CLL2-GIVe study.

In general, however, the rationale for the combination is sound, Dr. Danilov said.

“Of all the patient populations that we deal with within CLL, this probably would be most appropriate for this type of therapy. Patients with deletion 17p or TP53 mutations still represent an unmet medical need compared to other patients who don’t have those mutations,” he said.

Patients with CLL bearing the mutations have lower clinical response rates to novel therapies and generally do not respond well to chemoimmunotherapy, he said.

“The question becomes whether using these all at the same time, versus sequential strategies – using one drug and then after that, at relapse, another – is better, and obviously this trial doesn’t address that,” he said.
 

Three targets

The investigators enrolled 24 men and 17 women with untreated CLL with del(17p) and/or TP53 mutations and adequate organ function (creatinine clearance rate of more than 50 mL/min). The median age was 62 (range 35-85 years); 78% of patients had Binet stage B or C disease. The median Cumulative Illness Rating Scale (CIRS) score was 3 (range 0 to 8).

All patients received treatment with the combination for 6 months. The CD20 inhibitor obinutuzumab was given in a dose of 1,000 mg on days 1, 8 and 15 of cycle 1 and day 1 of cycles 2-6. The BTK inhibitor ibrutinib was given continuously at a dose of 420 mg per day beginning on the first day of the first cycle. Venetoclax, a B-cell lymphoma 2 (BCL-2) inhibitor, was started on day 22 of cycle 1, and was increased to 400 mg per day over 5 weeks until the end of cycle 12.

If patients achieved a complete remission (CR) or CR with incomplete recovery of blood counts (CRi) according to International Workshop on CLL criteria at final restaging (performed with imaging at the end of cycle 12 followed by bone marrow biopsy 2 months later), ibrutinib would be stopped beginning at cycle 15. Patients who did not have a CR or CRi would continue on ibrutinib until cycle 36.

Encouraging results

All but 3 of the 41 patients reached final restaging. Analyses of efficacy and safety included all 41 patients.

The CR/CRi rate at final restaging, the primary endpoint, was accomplished in 24 patients (58.8%), and 14 patients (34.1%) had a partial response.

Of the three patients for whom responses could not be assessed, two died (one from ovarian cancer which was retrospectively determined to have been present at enrollment, and one at cycle 9 from cardiac failure), and the third patient withdrew consent at cycle 10.

In all, 33 patients (80.5%) were MRD-negative in peripheral blood, 4 remained MRD positive, and 4 were not assessed. Per protocol, 22 patients with undetectable MRD and a CR or CRi discontinued therapy at week 15. An additional 13 patients also discontinued therapy because of adverse events or other reasons, and 6 remained on therapy beyond cycle 15.

The most frequent adverse events of any grade through the end of cycle 14 were gastrointestinal disorders in 83%, none higher than grade 2; infections and infestations in 70.7%, of which 19.5% were grade 3 or greater in severity; and blood and lymphatic system disorders in 58.5%, most of which (53.7%) were grade 3 or greater.

Cardiac disorders were reported in 19.5% of all patients, including 12.2% with atrial fibrillation; grade 3 or greater atrial fibrillation occurred in 2.4% of patients.

There was one case each of cerebral aspergillosis, progressive multifocal leukoencephalopathy (without PCR testing), urosepsis, staphylococcal sepsis and febrile infection.

Laboratory confirmed tumor lysis syndrome, all grade 3 or greater, was reported in 9.8% of patients. Infusion-related reactions were reported in 29.3% of patients, with a total of 7.3% being grade 3 or greater.

The trial was supported by Janssen-Cilag and Roche. Dr. Huber disclosed travel reimbursement from Novartis. Dr. Danilov disclosed consulting for AbbVie, Janssen, and Genentech.

SOURCE: Huber H et al. EHA Congress. Abstract S157.

For patients with high-risk chronic lymphocytic leukemia (CLL), first-line therapy with a triple combination of targeted agents showed encouraging response rates in the phase 2 CLL2-GIVe trial.

Among 41 patients with untreated CLL bearing deleterious TP53 mutations and/or the 17p chromosomal deletion who received the GIVe regimen consisting of obinutuzumab (Gazyva), ibrutinib (Imbruvica), and venetoclax (Venclexta), the complete response rate at final restaging was 58.5%, and 33 patients with a confirmed response were negative for minimal residual disease after a median follow-up of 18.6 months, reported Henriette Huber, MD, of University Hospital Ulm, Germany.

“The GIVe regimen is promising first-line therapy for patients with high-risk CLL,” she said in a presentation during the virtual annual congress of the European Hematology Association.

The overall safety profile of the combination was acceptable, she said, but added that “some higher-grade infections are of concern.” The rate of grade 3 or greater infections/infestations in the study was 19.5%.

Sound rationale (with caveat)

Another adverse event of concern is the rate of atrial fibrillation in the comparatively young patient population (median age 62), noted Alexey Danilov, MD, PhD, of City of Hope in Duarte Calif., who commented on the study for MDedge.

He pointed out that second-generation Bruton’s tyrosine kinase (BTK) inhibitors such as acalabrutinib (Calquence) may pose a lower risk of atrial fibrillation than the BTK inhibitor ibrutinib used in the CLL2-GIVe study.

In general, however, the rationale for the combination is sound, Dr. Danilov said.

“Of all the patient populations that we deal with within CLL, this probably would be most appropriate for this type of therapy. Patients with deletion 17p or TP53 mutations still represent an unmet medical need compared to other patients who don’t have those mutations,” he said.

Patients with CLL bearing the mutations have lower clinical response rates to novel therapies and generally do not respond well to chemoimmunotherapy, he said.

“The question becomes whether using these all at the same time, versus sequential strategies – using one drug and then after that, at relapse, another – is better, and obviously this trial doesn’t address that,” he said.
 

Three targets

The investigators enrolled 24 men and 17 women with untreated CLL with del(17p) and/or TP53 mutations and adequate organ function (creatinine clearance rate of more than 50 mL/min). The median age was 62 (range 35-85 years); 78% of patients had Binet stage B or C disease. The median Cumulative Illness Rating Scale (CIRS) score was 3 (range 0 to 8).

All patients received treatment with the combination for 6 months. The CD20 inhibitor obinutuzumab was given in a dose of 1,000 mg on days 1, 8 and 15 of cycle 1 and day 1 of cycles 2-6. The BTK inhibitor ibrutinib was given continuously at a dose of 420 mg per day beginning on the first day of the first cycle. Venetoclax, a B-cell lymphoma 2 (BCL-2) inhibitor, was started on day 22 of cycle 1, and was increased to 400 mg per day over 5 weeks until the end of cycle 12.

If patients achieved a complete remission (CR) or CR with incomplete recovery of blood counts (CRi) according to International Workshop on CLL criteria at final restaging (performed with imaging at the end of cycle 12 followed by bone marrow biopsy 2 months later), ibrutinib would be stopped beginning at cycle 15. Patients who did not have a CR or CRi would continue on ibrutinib until cycle 36.

Encouraging results

All but 3 of the 41 patients reached final restaging. Analyses of efficacy and safety included all 41 patients.

The CR/CRi rate at final restaging, the primary endpoint, was accomplished in 24 patients (58.8%), and 14 patients (34.1%) had a partial response.

Of the three patients for whom responses could not be assessed, two died (one from ovarian cancer which was retrospectively determined to have been present at enrollment, and one at cycle 9 from cardiac failure), and the third patient withdrew consent at cycle 10.

In all, 33 patients (80.5%) were MRD-negative in peripheral blood, 4 remained MRD positive, and 4 were not assessed. Per protocol, 22 patients with undetectable MRD and a CR or CRi discontinued therapy at week 15. An additional 13 patients also discontinued therapy because of adverse events or other reasons, and 6 remained on therapy beyond cycle 15.

The most frequent adverse events of any grade through the end of cycle 14 were gastrointestinal disorders in 83%, none higher than grade 2; infections and infestations in 70.7%, of which 19.5% were grade 3 or greater in severity; and blood and lymphatic system disorders in 58.5%, most of which (53.7%) were grade 3 or greater.

Cardiac disorders were reported in 19.5% of all patients, including 12.2% with atrial fibrillation; grade 3 or greater atrial fibrillation occurred in 2.4% of patients.

There was one case each of cerebral aspergillosis, progressive multifocal leukoencephalopathy (without PCR testing), urosepsis, staphylococcal sepsis and febrile infection.

Laboratory confirmed tumor lysis syndrome, all grade 3 or greater, was reported in 9.8% of patients. Infusion-related reactions were reported in 29.3% of patients, with a total of 7.3% being grade 3 or greater.

The trial was supported by Janssen-Cilag and Roche. Dr. Huber disclosed travel reimbursement from Novartis. Dr. Danilov disclosed consulting for AbbVie, Janssen, and Genentech.

SOURCE: Huber H et al. EHA Congress. Abstract S157.

Subcutaneous hepatitis A vaccination is as effective and may be safer for patients with bleeding disorders, according to a study by Mayumi Nakasone, MD, and colleagues.

MarianVejcik/Getty Images

The large number of donor exposures in bleeding disorder patients who require routine use of clotting factor concentrates remains a concern with regard to the risk of virus infection. Therefore, vaccinations for viruses such as hepatitis A are recommended. Although the intramuscular (IM) route is recommended for hepatitis A vaccination, patients with bleeding disorders have been advised to avoid IM injections because of the risk of bleeding and bruising of muscles, requiring infusion of clotting factor concentrates or other blood products for its treatment, according to Dr. Nakasone of the University of São Paulo and colleagues. They assessed 78 adult and pediatric patients with blood disorders randomized to vaccination for hepatitis A either subcutaneously (SC) or IM, according their study published on Vaccine.

The study was conducted at a single hemophilia center between May 2006 and February 2017.

Among the 78 patients, 58 (74.4%) presented hemophilia A (34 of the SC group and 24 of the IM group), 13 (16.7%) hemophilia B (4 of the SC group and 9 of the IM group) and 7 (8.9%) other bleeding disorders. There were no statistically significant differences between the SC and the IM groups in patients diagnosis or sex.

A total of 38 patients had serology performed after the first vaccine dose, determining seroconversion rates of 83.3% and 90.0% for the SC and the IM group, respectively, a nonsignificant difference. After the second vaccine dose, the seroconversion rate for the SC group was 97.5% and for the IM group was 97.4%, also a nonsignificant difference.

At a median of 9 years after a second vaccine dose, antibody titers for the SC group were slightly greater than the IM group (7.6 vs. 7.4), but this was also not a significant difference. There were no serious adverse events in both groups, according to Dr. Nakasone and colleagues. And although twice as many patients of the IM group required clotting factor concentrates for adverse events, compared with the SC group (15.8% vs. 7.5%), the difference was not significant.

“Hepatitis A vaccine administered subcutaneously is as immunogenic, long-term protective, and even safer as the intramuscular route for both children and adults not only with hemophilia, but also with other bleeding disorders,” the researchers concluded.

The authors declared that they had no disclosures.

mlesney@mdedge.com

SOURCE: Nakasone M et al. Vaccine 2020;38:4162-6.

Subcutaneous hepatitis A vaccination is as effective and may be safer for patients with bleeding disorders, according to a study by Mayumi Nakasone, MD, and colleagues.

MarianVejcik/Getty Images

The large number of donor exposures in bleeding disorder patients who require routine use of clotting factor concentrates remains a concern with regard to the risk of virus infection. Therefore, vaccinations for viruses such as hepatitis A are recommended. Although the intramuscular (IM) route is recommended for hepatitis A vaccination, patients with bleeding disorders have been advised to avoid IM injections because of the risk of bleeding and bruising of muscles, requiring infusion of clotting factor concentrates or other blood products for its treatment, according to Dr. Nakasone of the University of São Paulo and colleagues. They assessed 78 adult and pediatric patients with blood disorders randomized to vaccination for hepatitis A either subcutaneously (SC) or IM, according their study published on Vaccine.

The study was conducted at a single hemophilia center between May 2006 and February 2017.

Among the 78 patients, 58 (74.4%) presented hemophilia A (34 of the SC group and 24 of the IM group), 13 (16.7%) hemophilia B (4 of the SC group and 9 of the IM group) and 7 (8.9%) other bleeding disorders. There were no statistically significant differences between the SC and the IM groups in patients diagnosis or sex.

A total of 38 patients had serology performed after the first vaccine dose, determining seroconversion rates of 83.3% and 90.0% for the SC and the IM group, respectively, a nonsignificant difference. After the second vaccine dose, the seroconversion rate for the SC group was 97.5% and for the IM group was 97.4%, also a nonsignificant difference.

At a median of 9 years after a second vaccine dose, antibody titers for the SC group were slightly greater than the IM group (7.6 vs. 7.4), but this was also not a significant difference. There were no serious adverse events in both groups, according to Dr. Nakasone and colleagues. And although twice as many patients of the IM group required clotting factor concentrates for adverse events, compared with the SC group (15.8% vs. 7.5%), the difference was not significant.

“Hepatitis A vaccine administered subcutaneously is as immunogenic, long-term protective, and even safer as the intramuscular route for both children and adults not only with hemophilia, but also with other bleeding disorders,” the researchers concluded.

The authors declared that they had no disclosures.

mlesney@mdedge.com

SOURCE: Nakasone M et al. Vaccine 2020;38:4162-6.

Subcutaneous hepatitis A vaccination is as effective and may be safer for patients with bleeding disorders, according to a study by Mayumi Nakasone, MD, and colleagues.

MarianVejcik/Getty Images

The large number of donor exposures in bleeding disorder patients who require routine use of clotting factor concentrates remains a concern with regard to the risk of virus infection. Therefore, vaccinations for viruses such as hepatitis A are recommended. Although the intramuscular (IM) route is recommended for hepatitis A vaccination, patients with bleeding disorders have been advised to avoid IM injections because of the risk of bleeding and bruising of muscles, requiring infusion of clotting factor concentrates or other blood products for its treatment, according to Dr. Nakasone of the University of São Paulo and colleagues. They assessed 78 adult and pediatric patients with blood disorders randomized to vaccination for hepatitis A either subcutaneously (SC) or IM, according their study published on Vaccine.

The study was conducted at a single hemophilia center between May 2006 and February 2017.

Among the 78 patients, 58 (74.4%) presented hemophilia A (34 of the SC group and 24 of the IM group), 13 (16.7%) hemophilia B (4 of the SC group and 9 of the IM group) and 7 (8.9%) other bleeding disorders. There were no statistically significant differences between the SC and the IM groups in patients diagnosis or sex.

A total of 38 patients had serology performed after the first vaccine dose, determining seroconversion rates of 83.3% and 90.0% for the SC and the IM group, respectively, a nonsignificant difference. After the second vaccine dose, the seroconversion rate for the SC group was 97.5% and for the IM group was 97.4%, also a nonsignificant difference.

At a median of 9 years after a second vaccine dose, antibody titers for the SC group were slightly greater than the IM group (7.6 vs. 7.4), but this was also not a significant difference. There were no serious adverse events in both groups, according to Dr. Nakasone and colleagues. And although twice as many patients of the IM group required clotting factor concentrates for adverse events, compared with the SC group (15.8% vs. 7.5%), the difference was not significant.

“Hepatitis A vaccine administered subcutaneously is as immunogenic, long-term protective, and even safer as the intramuscular route for both children and adults not only with hemophilia, but also with other bleeding disorders,” the researchers concluded.

The authors declared that they had no disclosures.

mlesney@mdedge.com

SOURCE: Nakasone M et al. Vaccine 2020;38:4162-6.

Tandem autologous hematopoietic stem cell transplantation (HSCT) could extend progression-free survival (PFS) for some patients with newly diagnosed multiple myeloma, based on long-term data from the phase 3 STaMINA trial.

While the intent-to-treat analysis showed no difference in 6-year PFS rate between single versus tandem HSCT, the as-treated analysis showed that patients who received two transplants had a 6-year PFS rate that was approximately 10% higher than those who received just one transplant, reported lead author Parameswaran Hari, MD, of the Medical College of Wisconsin, Milwaukee, who presented the findings as part of the American Society of Clinical Oncology virtual scientific program.

The STaMINA trial, also known as BMT CTN 0702, involved 758 patients who were randomized to receive one of three treatment regimens followed by 3 years of maintenance lenalidomide: tandem HSCT (auto/auto), single HSCT plus consolidation with lenalidomide/bortezomib/dexamethasone (auto/RVD), and single HSCT (auto/len).

“At the time, we intended the study to stop approximately 38 months from randomization, allowing for the time for transplant, and then 3 years of maintenance,” Dr. Hari said. However, as the results of lenalidomide maintenance in CALGB 00104 study were reported, they allowed for a follow-on protocol, which provided patients who are progression-free at the completion of the original STaMINA trial to go on to a second follow-on trial, which allowed lenalidomide maintenance on an indefinite basis, he added.

The present analysis looked at the long-term results of this follow-on trial, including the impact of discontinuing lenalidomide.

Aligning with the original study, the present intent-to-treat analysis showed no significant difference between treatment arms for 6-year PFS rate or overall survival. Respectively, PFS rates for auto/auto, auto/RVD, and auto/len were 43.9%, 39.7%, and 40.9% (P = .6).

But 32% of patients in the tandem group never underwent second HSCT, Dr. Hari noted, prompting the as-treated analysis. Although overall survival remained similar between groups, the 6-year PFS was significantly higher for patients who underwent tandem HSCT, at 49.4%, compared with 39.7% for auto/RVD and 38.6% for auto/len (P = .03).

Subgroup analysis showed the statistical benefit of tandem HSCT was driven by high-risk patients, who had a significantly better PFS after tandem transplant, compared with standard-risk patients, who showed no significant benefit.

Dr. Hari called the findings “provocative.”

“The tandem auto approach may still be relevant in high-risk multiple myeloma patients,” he said.

Dr. Hari and his colleagues also found that patients who stayed on maintenance lenalidomide after 38 months had a better 5-year PFS rate than those who discontinued maintenance therapy (79.5% vs. 61%; P = .0004). Subgroup analysis showed this benefit was statistically significant among patients with standard-risk disease (86.3% vs. 66%; P less than .001) but not among those in the high-risk subgroup (86.7% vs. 67.8%; P = .2).

However, Dr. Hari suggested that, based on the similarity of proportions between subgroups, the lack of significance in the high-risk subgroup was likely because of small sample size, suggesting the benefit of maintenance was actually shared across risk strata.

“Lenalidomide maintenance becomes a significant factor for preventing patients from progression,” Dr. Hari said, noting that the tandem transplant approach requires further study, and that he and his colleagues would soon publish minimal residual disease data.

He finished his presentation with a clear clinical recommendation. “Preplanned lenalidomide discontinuation at 3 years is not recommended based on inferior progression-free survival among those who stopped such therapy,” he said.

Invited discussant Joshua R. Richter, MD, of the Icahn School of Medicine at Mount Sinai, New York, said the findings encourage high-dose maintenance therapy, and for some, tandem HSCT.

“The STaMINA study presented today supports the notion that some patients with high-risk disease still may benefit and have further tumor burden reduction with the second transplant that leads to deeper remissions and hopefully abrogates diminished outcomes,” Dr. Richter said during a virtual presentation.

But improvements are needed to better identify such patients, Dr. Richter added. He highlighted a lack of standardization in risk modeling, with various factors currently employed, such as patient characteristics and genomic markers, among several others.

“Better definitions will allow us to cross compare and make true analyses about how to manage these patients,” Dr. Richter said. “Despite the improvements across the board that we’ve seen in myeloma patients, high-risk disease continues to represent a more complicated arena. And patients continue to suffer from worse outcomes, despite all of the other advances.”

The study was funded by the National Institutes of Health. The investigators disclosed additional relationships with Amgen, Celgene, Novartis, and others. Dr. Richter disclosed affiliations with Takeda, Sanofi, Janssen, and others.
 

SOURCE: Hari et al. ASCO 2020. Abstract 8506.

Tandem autologous hematopoietic stem cell transplantation (HSCT) could extend progression-free survival (PFS) for some patients with newly diagnosed multiple myeloma, based on long-term data from the phase 3 STaMINA trial.

While the intent-to-treat analysis showed no difference in 6-year PFS rate between single versus tandem HSCT, the as-treated analysis showed that patients who received two transplants had a 6-year PFS rate that was approximately 10% higher than those who received just one transplant, reported lead author Parameswaran Hari, MD, of the Medical College of Wisconsin, Milwaukee, who presented the findings as part of the American Society of Clinical Oncology virtual scientific program.

The STaMINA trial, also known as BMT CTN 0702, involved 758 patients who were randomized to receive one of three treatment regimens followed by 3 years of maintenance lenalidomide: tandem HSCT (auto/auto), single HSCT plus consolidation with lenalidomide/bortezomib/dexamethasone (auto/RVD), and single HSCT (auto/len).

“At the time, we intended the study to stop approximately 38 months from randomization, allowing for the time for transplant, and then 3 years of maintenance,” Dr. Hari said. However, as the results of lenalidomide maintenance in CALGB 00104 study were reported, they allowed for a follow-on protocol, which provided patients who are progression-free at the completion of the original STaMINA trial to go on to a second follow-on trial, which allowed lenalidomide maintenance on an indefinite basis, he added.

The present analysis looked at the long-term results of this follow-on trial, including the impact of discontinuing lenalidomide.

Aligning with the original study, the present intent-to-treat analysis showed no significant difference between treatment arms for 6-year PFS rate or overall survival. Respectively, PFS rates for auto/auto, auto/RVD, and auto/len were 43.9%, 39.7%, and 40.9% (P = .6).

But 32% of patients in the tandem group never underwent second HSCT, Dr. Hari noted, prompting the as-treated analysis. Although overall survival remained similar between groups, the 6-year PFS was significantly higher for patients who underwent tandem HSCT, at 49.4%, compared with 39.7% for auto/RVD and 38.6% for auto/len (P = .03).

Subgroup analysis showed the statistical benefit of tandem HSCT was driven by high-risk patients, who had a significantly better PFS after tandem transplant, compared with standard-risk patients, who showed no significant benefit.

Dr. Hari called the findings “provocative.”

“The tandem auto approach may still be relevant in high-risk multiple myeloma patients,” he said.

Dr. Hari and his colleagues also found that patients who stayed on maintenance lenalidomide after 38 months had a better 5-year PFS rate than those who discontinued maintenance therapy (79.5% vs. 61%; P = .0004). Subgroup analysis showed this benefit was statistically significant among patients with standard-risk disease (86.3% vs. 66%; P less than .001) but not among those in the high-risk subgroup (86.7% vs. 67.8%; P = .2).

However, Dr. Hari suggested that, based on the similarity of proportions between subgroups, the lack of significance in the high-risk subgroup was likely because of small sample size, suggesting the benefit of maintenance was actually shared across risk strata.

“Lenalidomide maintenance becomes a significant factor for preventing patients from progression,” Dr. Hari said, noting that the tandem transplant approach requires further study, and that he and his colleagues would soon publish minimal residual disease data.

He finished his presentation with a clear clinical recommendation. “Preplanned lenalidomide discontinuation at 3 years is not recommended based on inferior progression-free survival among those who stopped such therapy,” he said.

Invited discussant Joshua R. Richter, MD, of the Icahn School of Medicine at Mount Sinai, New York, said the findings encourage high-dose maintenance therapy, and for some, tandem HSCT.

“The STaMINA study presented today supports the notion that some patients with high-risk disease still may benefit and have further tumor burden reduction with the second transplant that leads to deeper remissions and hopefully abrogates diminished outcomes,” Dr. Richter said during a virtual presentation.

But improvements are needed to better identify such patients, Dr. Richter added. He highlighted a lack of standardization in risk modeling, with various factors currently employed, such as patient characteristics and genomic markers, among several others.

“Better definitions will allow us to cross compare and make true analyses about how to manage these patients,” Dr. Richter said. “Despite the improvements across the board that we’ve seen in myeloma patients, high-risk disease continues to represent a more complicated arena. And patients continue to suffer from worse outcomes, despite all of the other advances.”

The study was funded by the National Institutes of Health. The investigators disclosed additional relationships with Amgen, Celgene, Novartis, and others. Dr. Richter disclosed affiliations with Takeda, Sanofi, Janssen, and others.
 

SOURCE: Hari et al. ASCO 2020. Abstract 8506.

Tandem autologous hematopoietic stem cell transplantation (HSCT) could extend progression-free survival (PFS) for some patients with newly diagnosed multiple myeloma, based on long-term data from the phase 3 STaMINA trial.

While the intent-to-treat analysis showed no difference in 6-year PFS rate between single versus tandem HSCT, the as-treated analysis showed that patients who received two transplants had a 6-year PFS rate that was approximately 10% higher than those who received just one transplant, reported lead author Parameswaran Hari, MD, of the Medical College of Wisconsin, Milwaukee, who presented the findings as part of the American Society of Clinical Oncology virtual scientific program.

The STaMINA trial, also known as BMT CTN 0702, involved 758 patients who were randomized to receive one of three treatment regimens followed by 3 years of maintenance lenalidomide: tandem HSCT (auto/auto), single HSCT plus consolidation with lenalidomide/bortezomib/dexamethasone (auto/RVD), and single HSCT (auto/len).

“At the time, we intended the study to stop approximately 38 months from randomization, allowing for the time for transplant, and then 3 years of maintenance,” Dr. Hari said. However, as the results of lenalidomide maintenance in CALGB 00104 study were reported, they allowed for a follow-on protocol, which provided patients who are progression-free at the completion of the original STaMINA trial to go on to a second follow-on trial, which allowed lenalidomide maintenance on an indefinite basis, he added.

The present analysis looked at the long-term results of this follow-on trial, including the impact of discontinuing lenalidomide.

Aligning with the original study, the present intent-to-treat analysis showed no significant difference between treatment arms for 6-year PFS rate or overall survival. Respectively, PFS rates for auto/auto, auto/RVD, and auto/len were 43.9%, 39.7%, and 40.9% (P = .6).

But 32% of patients in the tandem group never underwent second HSCT, Dr. Hari noted, prompting the as-treated analysis. Although overall survival remained similar between groups, the 6-year PFS was significantly higher for patients who underwent tandem HSCT, at 49.4%, compared with 39.7% for auto/RVD and 38.6% for auto/len (P = .03).

Subgroup analysis showed the statistical benefit of tandem HSCT was driven by high-risk patients, who had a significantly better PFS after tandem transplant, compared with standard-risk patients, who showed no significant benefit.

Dr. Hari called the findings “provocative.”

“The tandem auto approach may still be relevant in high-risk multiple myeloma patients,” he said.

Dr. Hari and his colleagues also found that patients who stayed on maintenance lenalidomide after 38 months had a better 5-year PFS rate than those who discontinued maintenance therapy (79.5% vs. 61%; P = .0004). Subgroup analysis showed this benefit was statistically significant among patients with standard-risk disease (86.3% vs. 66%; P less than .001) but not among those in the high-risk subgroup (86.7% vs. 67.8%; P = .2).

However, Dr. Hari suggested that, based on the similarity of proportions between subgroups, the lack of significance in the high-risk subgroup was likely because of small sample size, suggesting the benefit of maintenance was actually shared across risk strata.

“Lenalidomide maintenance becomes a significant factor for preventing patients from progression,” Dr. Hari said, noting that the tandem transplant approach requires further study, and that he and his colleagues would soon publish minimal residual disease data.

He finished his presentation with a clear clinical recommendation. “Preplanned lenalidomide discontinuation at 3 years is not recommended based on inferior progression-free survival among those who stopped such therapy,” he said.

Invited discussant Joshua R. Richter, MD, of the Icahn School of Medicine at Mount Sinai, New York, said the findings encourage high-dose maintenance therapy, and for some, tandem HSCT.

“The STaMINA study presented today supports the notion that some patients with high-risk disease still may benefit and have further tumor burden reduction with the second transplant that leads to deeper remissions and hopefully abrogates diminished outcomes,” Dr. Richter said during a virtual presentation.

But improvements are needed to better identify such patients, Dr. Richter added. He highlighted a lack of standardization in risk modeling, with various factors currently employed, such as patient characteristics and genomic markers, among several others.

“Better definitions will allow us to cross compare and make true analyses about how to manage these patients,” Dr. Richter said. “Despite the improvements across the board that we’ve seen in myeloma patients, high-risk disease continues to represent a more complicated arena. And patients continue to suffer from worse outcomes, despite all of the other advances.”

The study was funded by the National Institutes of Health. The investigators disclosed additional relationships with Amgen, Celgene, Novartis, and others. Dr. Richter disclosed affiliations with Takeda, Sanofi, Janssen, and others.
 

SOURCE: Hari et al. ASCO 2020. Abstract 8506.

Approximately one-fifth of patients undergoing hematopoietic stem cell transplantation (HSCT) develop posttraumatic stress disorder (PTSD), based on a retrospective analysis.

Patient factors at time of transplantation, such as low quality of life and high anxiety, predicted PTSD 6 months later, reported lead author Sarah Griffith, MD, of Massachusetts General Hospital, Boston, who presented findings as part of the American Society of Clinical Oncology virtual scientific program.

“We know that patients admitted for HSCT are often isolated in the hospital for a prolonged period of time, usually about 3-4 weeks, and that they endure substantial toxicities that impact both their physical and psychological well-being,” Dr. Griffith said. “We also know from the literature that HSCT can be considered a traumatic event and that it may lead to clinically significant PTSD symptoms.” But studies evaluating the prevalence and characteristics of PTSD in this patient population have been lacking, she noted.

Dr. Griffith and her colleagues therefore conducted a retrospective analysis involving 250 adults with hematologic malignancies who underwent autologous or allogeneic HSCT during clinical trials conducted from 2014 to 2016. Median patient age was 56 years.

The first objective of the study was to measure the prevalence of PTSD. The second was to characterize features of PTSD such as intrusion, which entails reliving experiences in the form of nightmares or flashbacks, and hypervigilance, which encompasses insomnia, irritability, and hyperarousal for threat. The third objective was to determine risk factors at baseline.

At time of admission for HSCT, after 2 weeks of hospitalization, and again 6 months after transplantation, patients were evaluated using the Functional Assessment of Cancer Therapy–Bone Marrow Transplant (FACT-BMT), and the Hospital Anxiety and Depression Scale (HADS), which measured of quality of life, anxiety, and depression. Six months after HSCT, patients also underwent screening for PTSD with the Post-Traumatic Stress Checklist (PTSD-CL). Multivariate regression models were used to determine predictive risk factors.

Six months after HSCT, 18.9% of patients had clinically significant PTSD symptoms; most common were symptoms of avoidance (92.3%), hypervigilance (92.3%), and intrusion (76.9%). Among those who did not have clinically significant PTSD, almost one-quarter (24.5%) demonstrated significant hypervigilance, while 13.7% showed symptoms of avoidance.

“Clinically significant PTSD symptoms are common in the transplant population,” Dr. Griffith said.

Baseline predictors of PTSD included single status and lower quality of life. More severe PTSD was predicted by single status, younger age, higher baseline scores for anxiety or depression, and increased anxiety during hospitalization.

Concluding her presentation, Dr. Griffith said that the findings, while correlative and not causative, should prompt concern and intervention.

“It is very important to be aware of and to manage PTSD symptoms in these patients,” she said. “There are several baseline factors that can be identified prior to HSCT that may illuminate patients at risk for developing worse PTSD symptoms down the road, and these patients may benefit from tailored supportive care interventions.”

Specifically, Dr. Griffith recommended integrating palliative care into hospitalization, as this has been shown to reduce anxiety.

In a virtual presentation, invited discussant Nirali N. Shah, MD, of the National Cancer Institute, Bethesda, Md., highlighted the importance of the findings, while also noting that the impact of palliative care on risk of PTSD has yet to be demonstrated.

Dr. Shah suggested that future research may be improved through use of a formal diagnosis for PTSD, instead of a PTSD checklist, as was used in the present study.

“And certainly long-term follow-up would be important to evaluate the utility of this tool looking at symptoms beyond 6 months,” she said.

Dr. Shah went on to discuss the relevance of the findings for pediatric populations, as children may face unique risk factors and consequences related to PTSD.

“[PTSD in children] may be impacted by family dynamics and structure,” Dr. Shah said. “Children may also have significant neurocognitive implications as a result of their underlying disease or prior therapy. They may experience chronic pain as they go out into adulthood and long-term survivorship, and may also struggle with symptoms of anxiety and depression.”

According to Dr. Shah, one previous study involving more than 6,000 adult survivors of childhood cancer found that PTSD was relatively common, with prevalence rate of 9%, suggesting that interventional work is necessary.

“Applying the data in the study from Griffith et al. suggests that evaluation in the more proximal posttransplant period for children is needed to specifically evaluate PTSD and symptoms thereof, and to try to use this to identify an opportunity for intervention,” Dr. Shah said.

“Pediatric-specific assessments are essential to optimally capture disease and/or age-specific considerations,” she added.

The study was funded by the Lymphoma and Leukemia Society. The investigators disclosed additional relationships with Vector Oncology, Pfizer, AstraZeneca, and Gaido Health/BCG Digital Ventures.

SOURCE: Griffith et al. ASCO 2020. Abstract # 7505.

Approximately one-fifth of patients undergoing hematopoietic stem cell transplantation (HSCT) develop posttraumatic stress disorder (PTSD), based on a retrospective analysis.

Patient factors at time of transplantation, such as low quality of life and high anxiety, predicted PTSD 6 months later, reported lead author Sarah Griffith, MD, of Massachusetts General Hospital, Boston, who presented findings as part of the American Society of Clinical Oncology virtual scientific program.

“We know that patients admitted for HSCT are often isolated in the hospital for a prolonged period of time, usually about 3-4 weeks, and that they endure substantial toxicities that impact both their physical and psychological well-being,” Dr. Griffith said. “We also know from the literature that HSCT can be considered a traumatic event and that it may lead to clinically significant PTSD symptoms.” But studies evaluating the prevalence and characteristics of PTSD in this patient population have been lacking, she noted.

Dr. Griffith and her colleagues therefore conducted a retrospective analysis involving 250 adults with hematologic malignancies who underwent autologous or allogeneic HSCT during clinical trials conducted from 2014 to 2016. Median patient age was 56 years.

The first objective of the study was to measure the prevalence of PTSD. The second was to characterize features of PTSD such as intrusion, which entails reliving experiences in the form of nightmares or flashbacks, and hypervigilance, which encompasses insomnia, irritability, and hyperarousal for threat. The third objective was to determine risk factors at baseline.

At time of admission for HSCT, after 2 weeks of hospitalization, and again 6 months after transplantation, patients were evaluated using the Functional Assessment of Cancer Therapy–Bone Marrow Transplant (FACT-BMT), and the Hospital Anxiety and Depression Scale (HADS), which measured of quality of life, anxiety, and depression. Six months after HSCT, patients also underwent screening for PTSD with the Post-Traumatic Stress Checklist (PTSD-CL). Multivariate regression models were used to determine predictive risk factors.

Six months after HSCT, 18.9% of patients had clinically significant PTSD symptoms; most common were symptoms of avoidance (92.3%), hypervigilance (92.3%), and intrusion (76.9%). Among those who did not have clinically significant PTSD, almost one-quarter (24.5%) demonstrated significant hypervigilance, while 13.7% showed symptoms of avoidance.

“Clinically significant PTSD symptoms are common in the transplant population,” Dr. Griffith said.

Baseline predictors of PTSD included single status and lower quality of life. More severe PTSD was predicted by single status, younger age, higher baseline scores for anxiety or depression, and increased anxiety during hospitalization.

Concluding her presentation, Dr. Griffith said that the findings, while correlative and not causative, should prompt concern and intervention.

“It is very important to be aware of and to manage PTSD symptoms in these patients,” she said. “There are several baseline factors that can be identified prior to HSCT that may illuminate patients at risk for developing worse PTSD symptoms down the road, and these patients may benefit from tailored supportive care interventions.”

Specifically, Dr. Griffith recommended integrating palliative care into hospitalization, as this has been shown to reduce anxiety.

In a virtual presentation, invited discussant Nirali N. Shah, MD, of the National Cancer Institute, Bethesda, Md., highlighted the importance of the findings, while also noting that the impact of palliative care on risk of PTSD has yet to be demonstrated.

Dr. Shah suggested that future research may be improved through use of a formal diagnosis for PTSD, instead of a PTSD checklist, as was used in the present study.

“And certainly long-term follow-up would be important to evaluate the utility of this tool looking at symptoms beyond 6 months,” she said.

Dr. Shah went on to discuss the relevance of the findings for pediatric populations, as children may face unique risk factors and consequences related to PTSD.

“[PTSD in children] may be impacted by family dynamics and structure,” Dr. Shah said. “Children may also have significant neurocognitive implications as a result of their underlying disease or prior therapy. They may experience chronic pain as they go out into adulthood and long-term survivorship, and may also struggle with symptoms of anxiety and depression.”

According to Dr. Shah, one previous study involving more than 6,000 adult survivors of childhood cancer found that PTSD was relatively common, with prevalence rate of 9%, suggesting that interventional work is necessary.

“Applying the data in the study from Griffith et al. suggests that evaluation in the more proximal posttransplant period for children is needed to specifically evaluate PTSD and symptoms thereof, and to try to use this to identify an opportunity for intervention,” Dr. Shah said.

“Pediatric-specific assessments are essential to optimally capture disease and/or age-specific considerations,” she added.

The study was funded by the Lymphoma and Leukemia Society. The investigators disclosed additional relationships with Vector Oncology, Pfizer, AstraZeneca, and Gaido Health/BCG Digital Ventures.

SOURCE: Griffith et al. ASCO 2020. Abstract # 7505.

Approximately one-fifth of patients undergoing hematopoietic stem cell transplantation (HSCT) develop posttraumatic stress disorder (PTSD), based on a retrospective analysis.

Patient factors at time of transplantation, such as low quality of life and high anxiety, predicted PTSD 6 months later, reported lead author Sarah Griffith, MD, of Massachusetts General Hospital, Boston, who presented findings as part of the American Society of Clinical Oncology virtual scientific program.

“We know that patients admitted for HSCT are often isolated in the hospital for a prolonged period of time, usually about 3-4 weeks, and that they endure substantial toxicities that impact both their physical and psychological well-being,” Dr. Griffith said. “We also know from the literature that HSCT can be considered a traumatic event and that it may lead to clinically significant PTSD symptoms.” But studies evaluating the prevalence and characteristics of PTSD in this patient population have been lacking, she noted.

Dr. Griffith and her colleagues therefore conducted a retrospective analysis involving 250 adults with hematologic malignancies who underwent autologous or allogeneic HSCT during clinical trials conducted from 2014 to 2016. Median patient age was 56 years.

The first objective of the study was to measure the prevalence of PTSD. The second was to characterize features of PTSD such as intrusion, which entails reliving experiences in the form of nightmares or flashbacks, and hypervigilance, which encompasses insomnia, irritability, and hyperarousal for threat. The third objective was to determine risk factors at baseline.

At time of admission for HSCT, after 2 weeks of hospitalization, and again 6 months after transplantation, patients were evaluated using the Functional Assessment of Cancer Therapy–Bone Marrow Transplant (FACT-BMT), and the Hospital Anxiety and Depression Scale (HADS), which measured of quality of life, anxiety, and depression. Six months after HSCT, patients also underwent screening for PTSD with the Post-Traumatic Stress Checklist (PTSD-CL). Multivariate regression models were used to determine predictive risk factors.

Six months after HSCT, 18.9% of patients had clinically significant PTSD symptoms; most common were symptoms of avoidance (92.3%), hypervigilance (92.3%), and intrusion (76.9%). Among those who did not have clinically significant PTSD, almost one-quarter (24.5%) demonstrated significant hypervigilance, while 13.7% showed symptoms of avoidance.

“Clinically significant PTSD symptoms are common in the transplant population,” Dr. Griffith said.

Baseline predictors of PTSD included single status and lower quality of life. More severe PTSD was predicted by single status, younger age, higher baseline scores for anxiety or depression, and increased anxiety during hospitalization.

Concluding her presentation, Dr. Griffith said that the findings, while correlative and not causative, should prompt concern and intervention.

“It is very important to be aware of and to manage PTSD symptoms in these patients,” she said. “There are several baseline factors that can be identified prior to HSCT that may illuminate patients at risk for developing worse PTSD symptoms down the road, and these patients may benefit from tailored supportive care interventions.”

Specifically, Dr. Griffith recommended integrating palliative care into hospitalization, as this has been shown to reduce anxiety.

In a virtual presentation, invited discussant Nirali N. Shah, MD, of the National Cancer Institute, Bethesda, Md., highlighted the importance of the findings, while also noting that the impact of palliative care on risk of PTSD has yet to be demonstrated.

Dr. Shah suggested that future research may be improved through use of a formal diagnosis for PTSD, instead of a PTSD checklist, as was used in the present study.

“And certainly long-term follow-up would be important to evaluate the utility of this tool looking at symptoms beyond 6 months,” she said.

Dr. Shah went on to discuss the relevance of the findings for pediatric populations, as children may face unique risk factors and consequences related to PTSD.

“[PTSD in children] may be impacted by family dynamics and structure,” Dr. Shah said. “Children may also have significant neurocognitive implications as a result of their underlying disease or prior therapy. They may experience chronic pain as they go out into adulthood and long-term survivorship, and may also struggle with symptoms of anxiety and depression.”

According to Dr. Shah, one previous study involving more than 6,000 adult survivors of childhood cancer found that PTSD was relatively common, with prevalence rate of 9%, suggesting that interventional work is necessary.

“Applying the data in the study from Griffith et al. suggests that evaluation in the more proximal posttransplant period for children is needed to specifically evaluate PTSD and symptoms thereof, and to try to use this to identify an opportunity for intervention,” Dr. Shah said.

“Pediatric-specific assessments are essential to optimally capture disease and/or age-specific considerations,” she added.

The study was funded by the Lymphoma and Leukemia Society. The investigators disclosed additional relationships with Vector Oncology, Pfizer, AstraZeneca, and Gaido Health/BCG Digital Ventures.

SOURCE: Griffith et al. ASCO 2020. Abstract # 7505.

The risk of melanoma was increased among patients taking biologics for immune-mediated inflammatory diseases, compared with biologic-naive patients on conventional systemic therapy, but the association was not statistically significant in a systematic review and meta-analysis published in JAMA Dermatology.

The studies included in the analysis, however, had limitations, including a lack of those comparing biologic and conventional systemic therapy in psoriasis and inflammatory bowel disease (IBD), according to Shamarke Esse, MRes, of the division of musculoskeletal and dermatological sciences at the University of Manchester (England) and colleagues. “We advocate for more large, well-designed studies of this issue to be performed to help improve certainty” regarding this association, they wrote.

Previous studies that have found an increased risk of melanoma in patients on biologics for psoriasis, rheumatoid arthritis, and IBD have “typically used the general population as the comparator,” they noted. There is a large amount of evidence that has established short-term efficacy and safety of biologics, compared with conventional systemic treatments, but concerns about longer-term cancer risk associated with biologics remains a concern. Moreover, they added, “melanoma is a highly immunogenic skin cancer and therefore of concern to patients treated with TNFIs [tumor necrosis factor inhibitors] because melanoma risk increases with suppression of the immune system and TNF-alpha plays an important role in the immune surveillance of tumors.12,13

In their review, the researchers identified seven cohort studies from MEDLINE, Embase, and Cochrane Central Register of Controlled Trials (CENTRAL) databases published between January 1995 and February 2019 that evaluated melanoma risk in about 34,000 patients receiving biologics and 135,370 patients who had never been treated with biologics, and were receiving conventional systemic therapy for psoriasis, RA, or IBD. Of these, four studies were in patients with RA, two studies were in patients with IBD, and a single study was in patients with psoriasis. Six studies examined patients taking TNF inhibitors, but only one of six studies had information on specific TNF inhibitors (adalimumab, etanercept, and infliximab) in patients with RA. One study evaluated abatacept and rituximab in RA patients.

The researchers analyzed the pooled relative risk across all studies. Compared with patients who received conventional systemic therapy, there was a nonsignificant association with risk of melanoma in patients with psoriasis (hazard ratio, 1.57; 95% confidence interval, 0.61-4.09), RA (pooled relative risk, 1.20; 95% CI, 0.83-1.74), and IBD (pRR, 1.20; 95% CI, 0.60-2.40).

Among RA patients who received TNF inhibitors only, there was a slightly elevated nonsignificant risk of melanoma (pRR, 1.08; 95% CI, 0.81-1.43). Patients receiving rituximab had a pRR of 0.73 (95% CI, 0.38-1.39), and patients taking abatacept had a pRR of 1.43 (95% CI, 0.66-3.09), compared with RA patients receiving conventional systemic therapy. When excluding two major studies in the RA subgroup of patients in a sensitivity analysis, pooled risk estimates varied from 0.91 (95% CI, 0.69-1.18) to 1.95 (95% CI, 1.16- 3.30). There were no significant between-study heterogeneity or publication bias among the IBD and RA studies.

Mr. Esse and colleagues acknowledged the small number of IBD and psoriasis studies in the meta-analysis, which could affect pooled risk estimates. “Any future update of our study through the inclusion of newly published studies may produce significantly different pooled risk estimates than those reported in our meta-analysis,” they said. In addition, the use of health insurance databases, lack of risk factors for melanoma, and inconsistent information about treatment duration for patients receiving conventional systemic therapy were also limitations.

“Prospective cohort studies using an active comparator, new-user study design providing detailed information on treatment history, concomitant treatments, biologic and conventional systemic treatment duration, recreational and treatment-related UV exposure, skin color, and date of melanoma diagnosis are required to help improve certainty. These studies would also need to account for key risk factors and the latency period of melanoma,” the researchers said.

Mr. Esse disclosed being funded by a PhD studentship from the Psoriasis Association. One author disclosed receiving personal fees from Janssen, LEO Pharma, Lilly, and Novartis outside the study; another disclosed receiving grants and personal fees from those and several other pharmaceutical companies during the study, and personal fees from several pharmaceutical companies outside of the submitted work; the fourth author had no disclosures.

SOURCE: Esse S et al. JAMA Dermatol. 2020 May 20;e201300.

The risk of melanoma was increased among patients taking biologics for immune-mediated inflammatory diseases, compared with biologic-naive patients on conventional systemic therapy, but the association was not statistically significant in a systematic review and meta-analysis published in JAMA Dermatology.

The studies included in the analysis, however, had limitations, including a lack of those comparing biologic and conventional systemic therapy in psoriasis and inflammatory bowel disease (IBD), according to Shamarke Esse, MRes, of the division of musculoskeletal and dermatological sciences at the University of Manchester (England) and colleagues. “We advocate for more large, well-designed studies of this issue to be performed to help improve certainty” regarding this association, they wrote.

Previous studies that have found an increased risk of melanoma in patients on biologics for psoriasis, rheumatoid arthritis, and IBD have “typically used the general population as the comparator,” they noted. There is a large amount of evidence that has established short-term efficacy and safety of biologics, compared with conventional systemic treatments, but concerns about longer-term cancer risk associated with biologics remains a concern. Moreover, they added, “melanoma is a highly immunogenic skin cancer and therefore of concern to patients treated with TNFIs [tumor necrosis factor inhibitors] because melanoma risk increases with suppression of the immune system and TNF-alpha plays an important role in the immune surveillance of tumors.12,13

In their review, the researchers identified seven cohort studies from MEDLINE, Embase, and Cochrane Central Register of Controlled Trials (CENTRAL) databases published between January 1995 and February 2019 that evaluated melanoma risk in about 34,000 patients receiving biologics and 135,370 patients who had never been treated with biologics, and were receiving conventional systemic therapy for psoriasis, RA, or IBD. Of these, four studies were in patients with RA, two studies were in patients with IBD, and a single study was in patients with psoriasis. Six studies examined patients taking TNF inhibitors, but only one of six studies had information on specific TNF inhibitors (adalimumab, etanercept, and infliximab) in patients with RA. One study evaluated abatacept and rituximab in RA patients.

The researchers analyzed the pooled relative risk across all studies. Compared with patients who received conventional systemic therapy, there was a nonsignificant association with risk of melanoma in patients with psoriasis (hazard ratio, 1.57; 95% confidence interval, 0.61-4.09), RA (pooled relative risk, 1.20; 95% CI, 0.83-1.74), and IBD (pRR, 1.20; 95% CI, 0.60-2.40).

Among RA patients who received TNF inhibitors only, there was a slightly elevated nonsignificant risk of melanoma (pRR, 1.08; 95% CI, 0.81-1.43). Patients receiving rituximab had a pRR of 0.73 (95% CI, 0.38-1.39), and patients taking abatacept had a pRR of 1.43 (95% CI, 0.66-3.09), compared with RA patients receiving conventional systemic therapy. When excluding two major studies in the RA subgroup of patients in a sensitivity analysis, pooled risk estimates varied from 0.91 (95% CI, 0.69-1.18) to 1.95 (95% CI, 1.16- 3.30). There were no significant between-study heterogeneity or publication bias among the IBD and RA studies.

Mr. Esse and colleagues acknowledged the small number of IBD and psoriasis studies in the meta-analysis, which could affect pooled risk estimates. “Any future update of our study through the inclusion of newly published studies may produce significantly different pooled risk estimates than those reported in our meta-analysis,” they said. In addition, the use of health insurance databases, lack of risk factors for melanoma, and inconsistent information about treatment duration for patients receiving conventional systemic therapy were also limitations.

“Prospective cohort studies using an active comparator, new-user study design providing detailed information on treatment history, concomitant treatments, biologic and conventional systemic treatment duration, recreational and treatment-related UV exposure, skin color, and date of melanoma diagnosis are required to help improve certainty. These studies would also need to account for key risk factors and the latency period of melanoma,” the researchers said.

Mr. Esse disclosed being funded by a PhD studentship from the Psoriasis Association. One author disclosed receiving personal fees from Janssen, LEO Pharma, Lilly, and Novartis outside the study; another disclosed receiving grants and personal fees from those and several other pharmaceutical companies during the study, and personal fees from several pharmaceutical companies outside of the submitted work; the fourth author had no disclosures.

SOURCE: Esse S et al. JAMA Dermatol. 2020 May 20;e201300.

The risk of melanoma was increased among patients taking biologics for immune-mediated inflammatory diseases, compared with biologic-naive patients on conventional systemic therapy, but the association was not statistically significant in a systematic review and meta-analysis published in JAMA Dermatology.

The studies included in the analysis, however, had limitations, including a lack of those comparing biologic and conventional systemic therapy in psoriasis and inflammatory bowel disease (IBD), according to Shamarke Esse, MRes, of the division of musculoskeletal and dermatological sciences at the University of Manchester (England) and colleagues. “We advocate for more large, well-designed studies of this issue to be performed to help improve certainty” regarding this association, they wrote.

Previous studies that have found an increased risk of melanoma in patients on biologics for psoriasis, rheumatoid arthritis, and IBD have “typically used the general population as the comparator,” they noted. There is a large amount of evidence that has established short-term efficacy and safety of biologics, compared with conventional systemic treatments, but concerns about longer-term cancer risk associated with biologics remains a concern. Moreover, they added, “melanoma is a highly immunogenic skin cancer and therefore of concern to patients treated with TNFIs [tumor necrosis factor inhibitors] because melanoma risk increases with suppression of the immune system and TNF-alpha plays an important role in the immune surveillance of tumors.12,13

In their review, the researchers identified seven cohort studies from MEDLINE, Embase, and Cochrane Central Register of Controlled Trials (CENTRAL) databases published between January 1995 and February 2019 that evaluated melanoma risk in about 34,000 patients receiving biologics and 135,370 patients who had never been treated with biologics, and were receiving conventional systemic therapy for psoriasis, RA, or IBD. Of these, four studies were in patients with RA, two studies were in patients with IBD, and a single study was in patients with psoriasis. Six studies examined patients taking TNF inhibitors, but only one of six studies had information on specific TNF inhibitors (adalimumab, etanercept, and infliximab) in patients with RA. One study evaluated abatacept and rituximab in RA patients.

The researchers analyzed the pooled relative risk across all studies. Compared with patients who received conventional systemic therapy, there was a nonsignificant association with risk of melanoma in patients with psoriasis (hazard ratio, 1.57; 95% confidence interval, 0.61-4.09), RA (pooled relative risk, 1.20; 95% CI, 0.83-1.74), and IBD (pRR, 1.20; 95% CI, 0.60-2.40).

Among RA patients who received TNF inhibitors only, there was a slightly elevated nonsignificant risk of melanoma (pRR, 1.08; 95% CI, 0.81-1.43). Patients receiving rituximab had a pRR of 0.73 (95% CI, 0.38-1.39), and patients taking abatacept had a pRR of 1.43 (95% CI, 0.66-3.09), compared with RA patients receiving conventional systemic therapy. When excluding two major studies in the RA subgroup of patients in a sensitivity analysis, pooled risk estimates varied from 0.91 (95% CI, 0.69-1.18) to 1.95 (95% CI, 1.16- 3.30). There were no significant between-study heterogeneity or publication bias among the IBD and RA studies.

Mr. Esse and colleagues acknowledged the small number of IBD and psoriasis studies in the meta-analysis, which could affect pooled risk estimates. “Any future update of our study through the inclusion of newly published studies may produce significantly different pooled risk estimates than those reported in our meta-analysis,” they said. In addition, the use of health insurance databases, lack of risk factors for melanoma, and inconsistent information about treatment duration for patients receiving conventional systemic therapy were also limitations.

“Prospective cohort studies using an active comparator, new-user study design providing detailed information on treatment history, concomitant treatments, biologic and conventional systemic treatment duration, recreational and treatment-related UV exposure, skin color, and date of melanoma diagnosis are required to help improve certainty. These studies would also need to account for key risk factors and the latency period of melanoma,” the researchers said.

Mr. Esse disclosed being funded by a PhD studentship from the Psoriasis Association. One author disclosed receiving personal fees from Janssen, LEO Pharma, Lilly, and Novartis outside the study; another disclosed receiving grants and personal fees from those and several other pharmaceutical companies during the study, and personal fees from several pharmaceutical companies outside of the submitted work; the fourth author had no disclosures.

SOURCE: Esse S et al. JAMA Dermatol. 2020 May 20;e201300.

A disease risk index is now available for pediatric patients with acute myeloid leukemia or acute lymphoblastic leukemia who undergo allogeneic hematopoietic stem cell transplantation.

The model, which was developed and validated using data from more than 2,000 patients, stratifies probabilities of leukemia-free survival (LFS) into four risk groups for acute myeloid leukemia (AML) and three risk groups for acute lymphoblastic leukemia (ALL), reported lead author Muna Qayed, MD, of Emory University, Atlanta, who presented findings as part of the American Society of Clinical Oncology virtual scientific program.

“The outcome of stem cell transplantation for hematologic malignancy is influenced by disease type, cytogenetics, and disease status at transplantation,” Dr. Qayed said. “In adults, these attributes were used to develop the disease risk index, or DRI, that can stratify patients for overall survival for purposes such as prognostication or clinical trial entry.”

But no such model exists for pediatric patients, Dr. Qayed said, noting that the adult DRI was found to be inaccurate when applied to children.

“[T]he [adult] DRI did not differentiate [pediatric] patients by overall survival,” Dr. Qayed said. “Therefore, knowing that pediatric AML and ALL differ biologically from adult leukemia, and further, treatment strategies differ between adults and children, we aimed to develop a pediatric-specific DRI.”

This involved analysis of data from 1,135 children with AML and 1,228 children with ALL who underwent transplantation between 2008 and 2017. All patients had myeloablative conditioning, and 75% received an unrelated donor graft. Haploidentical transplants were excluded because of small sample size.

Analyses were conducted in AML and ALL cohorts, with patients in each population randomized to training and validation subgroups in a 1:1 ratio. The primary outcome was LFS. Cox regression models were used to identify significant characteristics, which were then integrated into a prognostic scoring system for the training groups. These scoring systems were then tested in the validation subgroups. Maximum likelihood was used to identify age cutoffs, which were 3 years for AML and 2 years for ALL.

In both cohorts, disease status at transplantation was characterized by complete remission and minimal residual disease status.

In the AML cohort, approximately one-third of patients were in first complete remission with negative minimal residual disease. Risk was stratified into four groups, including good, intermediate, high, and very high risk, with respective 5-year LFS probabilities of 81%, 56%, 44%, and 21%. Independent predictors of poorer outcome included unfavorable cytogenetics, first or second complete remission with minimal residual disease positivity, relapse at transplantation, and age less than 3 years.

In the ALL cohort, risk was stratified into three risk tiers: good, intermediate, and high, with 5-year LFS probabilities of 68%, 50%, and 15%, respectively. Independent predictors of poorer outcome included age less than 2 years, relapse at transplantation, and second complete remission regardless of minimal residual disease status.

The models for each disease also predicted overall survival.

For AML, hazard ratios, ascending from good to very-high-risk tiers, were 1.00, 3.52, 4.67, and 8.62. For ALL risk tiers, ascending hazard ratios were 1.00, 2.16, and 3.86.

“In summary, the pediatric disease risk index validated for leukemia-free survival and overall survival successfully stratifies children with acute leukemia at the time of transplantation,” Dr. Qayed said.

She concluded her presentation by highlighting the practicality and relevance of the new scoring system.

“The components included in the scoring system used information that is readily available pretransplantation, lending support to the deliverability of the prognostic scoring system,” Dr. Qayed said. “It can further be used for improved interpretation of multicenter data and in clinical trials for risk stratification.”

In a virtual presentation, invited discussant Nirali N. Shah, MD, of the National Cancer Institute, Bethesda, Md., first emphasized the clinical importance of an accurate disease risk index for pediatric patients.

“When going into transplant, the No. 1 question that all parents will ask is: ‘Will my child be cured?’ ” she said.

According to Dr. Shah, the risk model developed by Dr. Qayed and colleagues is built on a strong foundation, including adequate sample size, comprehensive disease characterization, exclusion of patients that did not undergo myeloablative conditioning, and use of minimal residual disease status.

Still, more work is needed, Dr. Shah said.

“This DRI will need to be prospectively tested and compared to other established risk factors. For instance, minimal residual disease alone can be further stratified and has a significant role in establishing risk for posttransplant relapse. And the development of acute graft-versus-host disease also plays an important role in posttransplant relapse.”

Dr. Shah went on to outline potential areas of improvement.

“[F]uture directions for this study could include incorporation of early posttransplant events like graft-versus-host disease, potential stratification of the minimal residual disease results among those patients in complete remission, and potential application of this DRI to the adolescent and young adult population, which may have slight variation even from the adult DRI.”The study was funded by the National Institutes of Health. The investigators disclosed no conflicts of interest

SOURCE: Qayed M et al. ASCO 2020, Abstract 7503.

A disease risk index is now available for pediatric patients with acute myeloid leukemia or acute lymphoblastic leukemia who undergo allogeneic hematopoietic stem cell transplantation.

The model, which was developed and validated using data from more than 2,000 patients, stratifies probabilities of leukemia-free survival (LFS) into four risk groups for acute myeloid leukemia (AML) and three risk groups for acute lymphoblastic leukemia (ALL), reported lead author Muna Qayed, MD, of Emory University, Atlanta, who presented findings as part of the American Society of Clinical Oncology virtual scientific program.

“The outcome of stem cell transplantation for hematologic malignancy is influenced by disease type, cytogenetics, and disease status at transplantation,” Dr. Qayed said. “In adults, these attributes were used to develop the disease risk index, or DRI, that can stratify patients for overall survival for purposes such as prognostication or clinical trial entry.”

But no such model exists for pediatric patients, Dr. Qayed said, noting that the adult DRI was found to be inaccurate when applied to children.

“[T]he [adult] DRI did not differentiate [pediatric] patients by overall survival,” Dr. Qayed said. “Therefore, knowing that pediatric AML and ALL differ biologically from adult leukemia, and further, treatment strategies differ between adults and children, we aimed to develop a pediatric-specific DRI.”

This involved analysis of data from 1,135 children with AML and 1,228 children with ALL who underwent transplantation between 2008 and 2017. All patients had myeloablative conditioning, and 75% received an unrelated donor graft. Haploidentical transplants were excluded because of small sample size.

Analyses were conducted in AML and ALL cohorts, with patients in each population randomized to training and validation subgroups in a 1:1 ratio. The primary outcome was LFS. Cox regression models were used to identify significant characteristics, which were then integrated into a prognostic scoring system for the training groups. These scoring systems were then tested in the validation subgroups. Maximum likelihood was used to identify age cutoffs, which were 3 years for AML and 2 years for ALL.

In both cohorts, disease status at transplantation was characterized by complete remission and minimal residual disease status.

In the AML cohort, approximately one-third of patients were in first complete remission with negative minimal residual disease. Risk was stratified into four groups, including good, intermediate, high, and very high risk, with respective 5-year LFS probabilities of 81%, 56%, 44%, and 21%. Independent predictors of poorer outcome included unfavorable cytogenetics, first or second complete remission with minimal residual disease positivity, relapse at transplantation, and age less than 3 years.

In the ALL cohort, risk was stratified into three risk tiers: good, intermediate, and high, with 5-year LFS probabilities of 68%, 50%, and 15%, respectively. Independent predictors of poorer outcome included age less than 2 years, relapse at transplantation, and second complete remission regardless of minimal residual disease status.

The models for each disease also predicted overall survival.

For AML, hazard ratios, ascending from good to very-high-risk tiers, were 1.00, 3.52, 4.67, and 8.62. For ALL risk tiers, ascending hazard ratios were 1.00, 2.16, and 3.86.

“In summary, the pediatric disease risk index validated for leukemia-free survival and overall survival successfully stratifies children with acute leukemia at the time of transplantation,” Dr. Qayed said.

She concluded her presentation by highlighting the practicality and relevance of the new scoring system.

“The components included in the scoring system used information that is readily available pretransplantation, lending support to the deliverability of the prognostic scoring system,” Dr. Qayed said. “It can further be used for improved interpretation of multicenter data and in clinical trials for risk stratification.”

In a virtual presentation, invited discussant Nirali N. Shah, MD, of the National Cancer Institute, Bethesda, Md., first emphasized the clinical importance of an accurate disease risk index for pediatric patients.

“When going into transplant, the No. 1 question that all parents will ask is: ‘Will my child be cured?’ ” she said.

According to Dr. Shah, the risk model developed by Dr. Qayed and colleagues is built on a strong foundation, including adequate sample size, comprehensive disease characterization, exclusion of patients that did not undergo myeloablative conditioning, and use of minimal residual disease status.

Still, more work is needed, Dr. Shah said.

“This DRI will need to be prospectively tested and compared to other established risk factors. For instance, minimal residual disease alone can be further stratified and has a significant role in establishing risk for posttransplant relapse. And the development of acute graft-versus-host disease also plays an important role in posttransplant relapse.”

Dr. Shah went on to outline potential areas of improvement.

“[F]uture directions for this study could include incorporation of early posttransplant events like graft-versus-host disease, potential stratification of the minimal residual disease results among those patients in complete remission, and potential application of this DRI to the adolescent and young adult population, which may have slight variation even from the adult DRI.”The study was funded by the National Institutes of Health. The investigators disclosed no conflicts of interest

SOURCE: Qayed M et al. ASCO 2020, Abstract 7503.

A disease risk index is now available for pediatric patients with acute myeloid leukemia or acute lymphoblastic leukemia who undergo allogeneic hematopoietic stem cell transplantation.

The model, which was developed and validated using data from more than 2,000 patients, stratifies probabilities of leukemia-free survival (LFS) into four risk groups for acute myeloid leukemia (AML) and three risk groups for acute lymphoblastic leukemia (ALL), reported lead author Muna Qayed, MD, of Emory University, Atlanta, who presented findings as part of the American Society of Clinical Oncology virtual scientific program.

“The outcome of stem cell transplantation for hematologic malignancy is influenced by disease type, cytogenetics, and disease status at transplantation,” Dr. Qayed said. “In adults, these attributes were used to develop the disease risk index, or DRI, that can stratify patients for overall survival for purposes such as prognostication or clinical trial entry.”

But no such model exists for pediatric patients, Dr. Qayed said, noting that the adult DRI was found to be inaccurate when applied to children.

“[T]he [adult] DRI did not differentiate [pediatric] patients by overall survival,” Dr. Qayed said. “Therefore, knowing that pediatric AML and ALL differ biologically from adult leukemia, and further, treatment strategies differ between adults and children, we aimed to develop a pediatric-specific DRI.”

This involved analysis of data from 1,135 children with AML and 1,228 children with ALL who underwent transplantation between 2008 and 2017. All patients had myeloablative conditioning, and 75% received an unrelated donor graft. Haploidentical transplants were excluded because of small sample size.

Analyses were conducted in AML and ALL cohorts, with patients in each population randomized to training and validation subgroups in a 1:1 ratio. The primary outcome was LFS. Cox regression models were used to identify significant characteristics, which were then integrated into a prognostic scoring system for the training groups. These scoring systems were then tested in the validation subgroups. Maximum likelihood was used to identify age cutoffs, which were 3 years for AML and 2 years for ALL.

In both cohorts, disease status at transplantation was characterized by complete remission and minimal residual disease status.

In the AML cohort, approximately one-third of patients were in first complete remission with negative minimal residual disease. Risk was stratified into four groups, including good, intermediate, high, and very high risk, with respective 5-year LFS probabilities of 81%, 56%, 44%, and 21%. Independent predictors of poorer outcome included unfavorable cytogenetics, first or second complete remission with minimal residual disease positivity, relapse at transplantation, and age less than 3 years.

In the ALL cohort, risk was stratified into three risk tiers: good, intermediate, and high, with 5-year LFS probabilities of 68%, 50%, and 15%, respectively. Independent predictors of poorer outcome included age less than 2 years, relapse at transplantation, and second complete remission regardless of minimal residual disease status.

The models for each disease also predicted overall survival.

For AML, hazard ratios, ascending from good to very-high-risk tiers, were 1.00, 3.52, 4.67, and 8.62. For ALL risk tiers, ascending hazard ratios were 1.00, 2.16, and 3.86.

“In summary, the pediatric disease risk index validated for leukemia-free survival and overall survival successfully stratifies children with acute leukemia at the time of transplantation,” Dr. Qayed said.

She concluded her presentation by highlighting the practicality and relevance of the new scoring system.

“The components included in the scoring system used information that is readily available pretransplantation, lending support to the deliverability of the prognostic scoring system,” Dr. Qayed said. “It can further be used for improved interpretation of multicenter data and in clinical trials for risk stratification.”

In a virtual presentation, invited discussant Nirali N. Shah, MD, of the National Cancer Institute, Bethesda, Md., first emphasized the clinical importance of an accurate disease risk index for pediatric patients.

“When going into transplant, the No. 1 question that all parents will ask is: ‘Will my child be cured?’ ” she said.

According to Dr. Shah, the risk model developed by Dr. Qayed and colleagues is built on a strong foundation, including adequate sample size, comprehensive disease characterization, exclusion of patients that did not undergo myeloablative conditioning, and use of minimal residual disease status.

Still, more work is needed, Dr. Shah said.

“This DRI will need to be prospectively tested and compared to other established risk factors. For instance, minimal residual disease alone can be further stratified and has a significant role in establishing risk for posttransplant relapse. And the development of acute graft-versus-host disease also plays an important role in posttransplant relapse.”

Dr. Shah went on to outline potential areas of improvement.

“[F]uture directions for this study could include incorporation of early posttransplant events like graft-versus-host disease, potential stratification of the minimal residual disease results among those patients in complete remission, and potential application of this DRI to the adolescent and young adult population, which may have slight variation even from the adult DRI.”The study was funded by the National Institutes of Health. The investigators disclosed no conflicts of interest

SOURCE: Qayed M et al. ASCO 2020, Abstract 7503.