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Transfusions, readmissions higher for patients with CLL after cardiac surgery
Patients with chronic lymphocytic leukemia have similar outcomes following cardiac operations as patients without CLL, but commonly require more blood transfusions, according to the results of retrospective cohort study using the 2010-2017 Nationwide Readmissions Database (NRD).
The researchers assessed all adult patients undergoing elective coronary artery bypass grafting, valve repair, or valve replacement as identified using the NRD.
Patients were stratified by history of CLL and the incidence of in-hospital mortality, perioperative complications, blood transfusions, and readmission within 90 days were examined. A 3:1 nearest-neighbor matching was performed between patients with and without CLL for all primary and secondary outcomes of interest, according to the report, published online in Annals of Thoracic Surgery.
Comparable results
A total of 1,250,882 patients in the database were found who underwent cardiac operations. Of these, 0.23% had a diagnosis of CLL. Among 11,237 propensity-matched patients, those with CLL had similar rates of in-hospital mortality (3.8% vs. 2.6%, P = .08) and perioperative complications (33.4% vs. 33.6%, P = .92), compared with their non-CLL counterparts. However, the incidence of infection was comparable (8.5% vs. 9.4%, P = .38).
However, patients with CLL required blood transfusions more frequently (33.7% vs. 28.4%, P = .003) than did patients without CLL. In addition, patients with CLL were more likely to be readmitted within 90 days of discharge, compared with their counterparts, and “respiratory reasons, including pneumonia, contributed significantly to the readmission burden in this cohort,” the researchers, led by Josef Madrigal, BS, of the University of California, Los Angeles, stated.
“The inherent risk of transfusion and the possible benefits of blood conservation interventions must be considered in this patient population. Increased risk of rehospitalization in patients with CLL suggests the need for measures aimed at mitigating the risk of respiratory complications,” the researchers concluded.
There were no conflicts of interest reported in the article.
Patients with chronic lymphocytic leukemia have similar outcomes following cardiac operations as patients without CLL, but commonly require more blood transfusions, according to the results of retrospective cohort study using the 2010-2017 Nationwide Readmissions Database (NRD).
The researchers assessed all adult patients undergoing elective coronary artery bypass grafting, valve repair, or valve replacement as identified using the NRD.
Patients were stratified by history of CLL and the incidence of in-hospital mortality, perioperative complications, blood transfusions, and readmission within 90 days were examined. A 3:1 nearest-neighbor matching was performed between patients with and without CLL for all primary and secondary outcomes of interest, according to the report, published online in Annals of Thoracic Surgery.
Comparable results
A total of 1,250,882 patients in the database were found who underwent cardiac operations. Of these, 0.23% had a diagnosis of CLL. Among 11,237 propensity-matched patients, those with CLL had similar rates of in-hospital mortality (3.8% vs. 2.6%, P = .08) and perioperative complications (33.4% vs. 33.6%, P = .92), compared with their non-CLL counterparts. However, the incidence of infection was comparable (8.5% vs. 9.4%, P = .38).
However, patients with CLL required blood transfusions more frequently (33.7% vs. 28.4%, P = .003) than did patients without CLL. In addition, patients with CLL were more likely to be readmitted within 90 days of discharge, compared with their counterparts, and “respiratory reasons, including pneumonia, contributed significantly to the readmission burden in this cohort,” the researchers, led by Josef Madrigal, BS, of the University of California, Los Angeles, stated.
“The inherent risk of transfusion and the possible benefits of blood conservation interventions must be considered in this patient population. Increased risk of rehospitalization in patients with CLL suggests the need for measures aimed at mitigating the risk of respiratory complications,” the researchers concluded.
There were no conflicts of interest reported in the article.
Patients with chronic lymphocytic leukemia have similar outcomes following cardiac operations as patients without CLL, but commonly require more blood transfusions, according to the results of retrospective cohort study using the 2010-2017 Nationwide Readmissions Database (NRD).
The researchers assessed all adult patients undergoing elective coronary artery bypass grafting, valve repair, or valve replacement as identified using the NRD.
Patients were stratified by history of CLL and the incidence of in-hospital mortality, perioperative complications, blood transfusions, and readmission within 90 days were examined. A 3:1 nearest-neighbor matching was performed between patients with and without CLL for all primary and secondary outcomes of interest, according to the report, published online in Annals of Thoracic Surgery.
Comparable results
A total of 1,250,882 patients in the database were found who underwent cardiac operations. Of these, 0.23% had a diagnosis of CLL. Among 11,237 propensity-matched patients, those with CLL had similar rates of in-hospital mortality (3.8% vs. 2.6%, P = .08) and perioperative complications (33.4% vs. 33.6%, P = .92), compared with their non-CLL counterparts. However, the incidence of infection was comparable (8.5% vs. 9.4%, P = .38).
However, patients with CLL required blood transfusions more frequently (33.7% vs. 28.4%, P = .003) than did patients without CLL. In addition, patients with CLL were more likely to be readmitted within 90 days of discharge, compared with their counterparts, and “respiratory reasons, including pneumonia, contributed significantly to the readmission burden in this cohort,” the researchers, led by Josef Madrigal, BS, of the University of California, Los Angeles, stated.
“The inherent risk of transfusion and the possible benefits of blood conservation interventions must be considered in this patient population. Increased risk of rehospitalization in patients with CLL suggests the need for measures aimed at mitigating the risk of respiratory complications,” the researchers concluded.
There were no conflicts of interest reported in the article.
FROM THE ANNALS OF THORACIC SURGERY
Can reversing T-cell exhaustion benefit in B-cell lymphoma relapse?
Durable remissions have been obtained in around 30%-40% of relapsed/refractory large B-cell lymphomas (BCL) through the use of CD19-directed chimeric antigen receptor-modified T-cell (CAR T-cell) therapy. However, T cell exhaustion and/or an immunosuppressive tumor environment may contribute to CAR T cell failure and BCL relapse.
To counter this failure, researchers assessed the use PD1 blockade with pembrolizumab after CD19-directed CAR T-cell therapy. Such treatment appeared safe and was able to achieve clinical responses in some patients with B-cell lymphomas refractory to or relapsed after CAR T-cell therapy, according to the results of a small study (NCT02650999) reported in Blood.
Success for some
Twelve patients with BCL who were either refractory to (nine patients) or relapsed after (three patients) CD19-directed CAR T-cell therapy were treated with pembrolizumab at 200 mg IV every 3 weeks, according to Elise A. Chong, MD, of the University of Pennsylvania, Philadelphia, and colleagues.
Overall, 3 of the 12 patients showed a response after pembrolizumab: One complete response; two partial responses. In addition, 1 patient had stable disease; thus, 4 of the 12 patients showed clinical benefit, according to the researchers. After pembrolizumab, these four patients with clinical benefit showed an increase in the percentage of CAR T cells as assessed by mass cytometry, and three out of the four also showed increases in CAR19 transgene levels as determined by qPCR. In addition, immune profiling using mass cytometry revealed increased CAR T-cell activation and proliferation and less T-cell exhaustion in these clinical responders.
In terms of safety, pembrolizumab appeared to be well tolerated and the only ≥ grade 3 adverse events related to pembrolizumab were neutropenia in three patients, the researchers added.
Looking forward
“Although patient numbers are small, these data suggest potential differences in the biology of CAR T cells or in the overall immune landscape of responders and nonresponders that influence the clinical efficacy of PD-1 blockade administered in this setting. Future work aimed at improving immune health after CAR T-cell infusion, as well as work aimed at decreasing CD8+ CAR T-cell exhaustion in CAR T-cell products, may serve as potential platforms for enhancing the efficacy of immune checkpoint blockade in patients treated with CAR T cells,” the researchers concluded.
The study was sponsored by the Abramson Cancer Center of the University of Pennsylvania. The authors reported serving on advisory boards and receiving research funding from a variety of pharmaceutical and biotechnology companies.
Durable remissions have been obtained in around 30%-40% of relapsed/refractory large B-cell lymphomas (BCL) through the use of CD19-directed chimeric antigen receptor-modified T-cell (CAR T-cell) therapy. However, T cell exhaustion and/or an immunosuppressive tumor environment may contribute to CAR T cell failure and BCL relapse.
To counter this failure, researchers assessed the use PD1 blockade with pembrolizumab after CD19-directed CAR T-cell therapy. Such treatment appeared safe and was able to achieve clinical responses in some patients with B-cell lymphomas refractory to or relapsed after CAR T-cell therapy, according to the results of a small study (NCT02650999) reported in Blood.
Success for some
Twelve patients with BCL who were either refractory to (nine patients) or relapsed after (three patients) CD19-directed CAR T-cell therapy were treated with pembrolizumab at 200 mg IV every 3 weeks, according to Elise A. Chong, MD, of the University of Pennsylvania, Philadelphia, and colleagues.
Overall, 3 of the 12 patients showed a response after pembrolizumab: One complete response; two partial responses. In addition, 1 patient had stable disease; thus, 4 of the 12 patients showed clinical benefit, according to the researchers. After pembrolizumab, these four patients with clinical benefit showed an increase in the percentage of CAR T cells as assessed by mass cytometry, and three out of the four also showed increases in CAR19 transgene levels as determined by qPCR. In addition, immune profiling using mass cytometry revealed increased CAR T-cell activation and proliferation and less T-cell exhaustion in these clinical responders.
In terms of safety, pembrolizumab appeared to be well tolerated and the only ≥ grade 3 adverse events related to pembrolizumab were neutropenia in three patients, the researchers added.
Looking forward
“Although patient numbers are small, these data suggest potential differences in the biology of CAR T cells or in the overall immune landscape of responders and nonresponders that influence the clinical efficacy of PD-1 blockade administered in this setting. Future work aimed at improving immune health after CAR T-cell infusion, as well as work aimed at decreasing CD8+ CAR T-cell exhaustion in CAR T-cell products, may serve as potential platforms for enhancing the efficacy of immune checkpoint blockade in patients treated with CAR T cells,” the researchers concluded.
The study was sponsored by the Abramson Cancer Center of the University of Pennsylvania. The authors reported serving on advisory boards and receiving research funding from a variety of pharmaceutical and biotechnology companies.
Durable remissions have been obtained in around 30%-40% of relapsed/refractory large B-cell lymphomas (BCL) through the use of CD19-directed chimeric antigen receptor-modified T-cell (CAR T-cell) therapy. However, T cell exhaustion and/or an immunosuppressive tumor environment may contribute to CAR T cell failure and BCL relapse.
To counter this failure, researchers assessed the use PD1 blockade with pembrolizumab after CD19-directed CAR T-cell therapy. Such treatment appeared safe and was able to achieve clinical responses in some patients with B-cell lymphomas refractory to or relapsed after CAR T-cell therapy, according to the results of a small study (NCT02650999) reported in Blood.
Success for some
Twelve patients with BCL who were either refractory to (nine patients) or relapsed after (three patients) CD19-directed CAR T-cell therapy were treated with pembrolizumab at 200 mg IV every 3 weeks, according to Elise A. Chong, MD, of the University of Pennsylvania, Philadelphia, and colleagues.
Overall, 3 of the 12 patients showed a response after pembrolizumab: One complete response; two partial responses. In addition, 1 patient had stable disease; thus, 4 of the 12 patients showed clinical benefit, according to the researchers. After pembrolizumab, these four patients with clinical benefit showed an increase in the percentage of CAR T cells as assessed by mass cytometry, and three out of the four also showed increases in CAR19 transgene levels as determined by qPCR. In addition, immune profiling using mass cytometry revealed increased CAR T-cell activation and proliferation and less T-cell exhaustion in these clinical responders.
In terms of safety, pembrolizumab appeared to be well tolerated and the only ≥ grade 3 adverse events related to pembrolizumab were neutropenia in three patients, the researchers added.
Looking forward
“Although patient numbers are small, these data suggest potential differences in the biology of CAR T cells or in the overall immune landscape of responders and nonresponders that influence the clinical efficacy of PD-1 blockade administered in this setting. Future work aimed at improving immune health after CAR T-cell infusion, as well as work aimed at decreasing CD8+ CAR T-cell exhaustion in CAR T-cell products, may serve as potential platforms for enhancing the efficacy of immune checkpoint blockade in patients treated with CAR T cells,” the researchers concluded.
The study was sponsored by the Abramson Cancer Center of the University of Pennsylvania. The authors reported serving on advisory boards and receiving research funding from a variety of pharmaceutical and biotechnology companies.
FROM BLOOD
Genetic shift increases susceptibility to childhood ALL
A genetically induced shift toward higher lymphocyte counts was found to increase susceptibility to childhood acute lymphoblastic leukemia, according to the results of a large genome-wide association study of 2,666 childhood patients with ALL as compared with 60,272 control individuals.
The development of ALL is thought to follow a two-hit model of leukemogenesis; in utero formation of a preleukemic clone and subsequent postnatal acquisition of secondary somatic mutations that leads to overt leukemia, according to Linda Kachuri, PhD, of the department of epidemiology and biostatistics, University of California, San Francisco, and colleagues.
The development of ALL is thought to follow a two-hit model of leukemogenesis; in utero formation of a preleukemic clone and subsequent postnatal acquisition of secondary somatic mutations that leads to overt leukemia, according to Linda Kachuri, PhD, of the Department of Epidemiology and Biostatistics, University of California San Francisco, and colleagues.
Previous research has shown that several childhood-ALL–risk regions have also been associated with variation in blood-cell traits and a recent phenome-wide association study of childhood ALL identified platelet count as the most enriched trait among known ALL-risk loci. To further explore this issue, the researchers conducted their comprehensive study of the role of blood-cell-trait variation in the etiology of childhood ALL.
The researchers identified 3,000 blood-cell-trait–associated variants, which accounted for 4.0% to 23.9% of trait variation and included 115 loci associated with blood-cell ratios: lymphocyte-to-monocyte ratio (LMR); neutrophil-to-lymphocyte ratio (NLR); and platelet-to-lymphocyte ratio (PLR), according to a report published online in The American Journal of Human Genetics.
Lymphocyte risk
The researchers found that ALL susceptibility was genetically correlated with lymphocyte counts (rg = 0.088, P = .0004) and PLR (rg = 0.072, P = .0017).
Using Mendelian randomization analyses, a genetically predicted increase in lymphocyte counts was found to be associated with increased ALL risk (odds ratio [OR] = 1.16, P = .031). This correlation was strengthened after the researchers accounted for other cell types (OR = 1.43, P = .0009).
The researchers observed positive associations with increasing LMR (OR = 1.22, P = .0017) as well as inverse effects for NLR (OR = 0.67, P = .0003) and PLR (OR = 0.80, P = .002).
“We identified the cell-type ratios LMR, NLR, and PLR as independent risk factors for ALL and found evidence that these ratios have distinct genetic mechanisms that are not captured by their component traits. In multivariable MR analyses that concurrently modeled the effects of lymphocyte, monocyte, neutrophil, and platelet counts on ALL, lymphocytes remained as the only independent risk factor and this association with ALL strengthened compared to univariate analyses,” the researchers stated.
They reported that they had no competing interests.
A genetically induced shift toward higher lymphocyte counts was found to increase susceptibility to childhood acute lymphoblastic leukemia, according to the results of a large genome-wide association study of 2,666 childhood patients with ALL as compared with 60,272 control individuals.
The development of ALL is thought to follow a two-hit model of leukemogenesis; in utero formation of a preleukemic clone and subsequent postnatal acquisition of secondary somatic mutations that leads to overt leukemia, according to Linda Kachuri, PhD, of the department of epidemiology and biostatistics, University of California, San Francisco, and colleagues.
The development of ALL is thought to follow a two-hit model of leukemogenesis; in utero formation of a preleukemic clone and subsequent postnatal acquisition of secondary somatic mutations that leads to overt leukemia, according to Linda Kachuri, PhD, of the Department of Epidemiology and Biostatistics, University of California San Francisco, and colleagues.
Previous research has shown that several childhood-ALL–risk regions have also been associated with variation in blood-cell traits and a recent phenome-wide association study of childhood ALL identified platelet count as the most enriched trait among known ALL-risk loci. To further explore this issue, the researchers conducted their comprehensive study of the role of blood-cell-trait variation in the etiology of childhood ALL.
The researchers identified 3,000 blood-cell-trait–associated variants, which accounted for 4.0% to 23.9% of trait variation and included 115 loci associated with blood-cell ratios: lymphocyte-to-monocyte ratio (LMR); neutrophil-to-lymphocyte ratio (NLR); and platelet-to-lymphocyte ratio (PLR), according to a report published online in The American Journal of Human Genetics.
Lymphocyte risk
The researchers found that ALL susceptibility was genetically correlated with lymphocyte counts (rg = 0.088, P = .0004) and PLR (rg = 0.072, P = .0017).
Using Mendelian randomization analyses, a genetically predicted increase in lymphocyte counts was found to be associated with increased ALL risk (odds ratio [OR] = 1.16, P = .031). This correlation was strengthened after the researchers accounted for other cell types (OR = 1.43, P = .0009).
The researchers observed positive associations with increasing LMR (OR = 1.22, P = .0017) as well as inverse effects for NLR (OR = 0.67, P = .0003) and PLR (OR = 0.80, P = .002).
“We identified the cell-type ratios LMR, NLR, and PLR as independent risk factors for ALL and found evidence that these ratios have distinct genetic mechanisms that are not captured by their component traits. In multivariable MR analyses that concurrently modeled the effects of lymphocyte, monocyte, neutrophil, and platelet counts on ALL, lymphocytes remained as the only independent risk factor and this association with ALL strengthened compared to univariate analyses,” the researchers stated.
They reported that they had no competing interests.
A genetically induced shift toward higher lymphocyte counts was found to increase susceptibility to childhood acute lymphoblastic leukemia, according to the results of a large genome-wide association study of 2,666 childhood patients with ALL as compared with 60,272 control individuals.
The development of ALL is thought to follow a two-hit model of leukemogenesis; in utero formation of a preleukemic clone and subsequent postnatal acquisition of secondary somatic mutations that leads to overt leukemia, according to Linda Kachuri, PhD, of the department of epidemiology and biostatistics, University of California, San Francisco, and colleagues.
The development of ALL is thought to follow a two-hit model of leukemogenesis; in utero formation of a preleukemic clone and subsequent postnatal acquisition of secondary somatic mutations that leads to overt leukemia, according to Linda Kachuri, PhD, of the Department of Epidemiology and Biostatistics, University of California San Francisco, and colleagues.
Previous research has shown that several childhood-ALL–risk regions have also been associated with variation in blood-cell traits and a recent phenome-wide association study of childhood ALL identified platelet count as the most enriched trait among known ALL-risk loci. To further explore this issue, the researchers conducted their comprehensive study of the role of blood-cell-trait variation in the etiology of childhood ALL.
The researchers identified 3,000 blood-cell-trait–associated variants, which accounted for 4.0% to 23.9% of trait variation and included 115 loci associated with blood-cell ratios: lymphocyte-to-monocyte ratio (LMR); neutrophil-to-lymphocyte ratio (NLR); and platelet-to-lymphocyte ratio (PLR), according to a report published online in The American Journal of Human Genetics.
Lymphocyte risk
The researchers found that ALL susceptibility was genetically correlated with lymphocyte counts (rg = 0.088, P = .0004) and PLR (rg = 0.072, P = .0017).
Using Mendelian randomization analyses, a genetically predicted increase in lymphocyte counts was found to be associated with increased ALL risk (odds ratio [OR] = 1.16, P = .031). This correlation was strengthened after the researchers accounted for other cell types (OR = 1.43, P = .0009).
The researchers observed positive associations with increasing LMR (OR = 1.22, P = .0017) as well as inverse effects for NLR (OR = 0.67, P = .0003) and PLR (OR = 0.80, P = .002).
“We identified the cell-type ratios LMR, NLR, and PLR as independent risk factors for ALL and found evidence that these ratios have distinct genetic mechanisms that are not captured by their component traits. In multivariable MR analyses that concurrently modeled the effects of lymphocyte, monocyte, neutrophil, and platelet counts on ALL, lymphocytes remained as the only independent risk factor and this association with ALL strengthened compared to univariate analyses,” the researchers stated.
They reported that they had no competing interests.
FROM THE AMERICAN JOURNAL OF HUMAN GENETICS
New gene variant found for hereditary bleeding disorder
Clinical symptoms in a 19-year-old Vietnamese woman who experienced several life-threatening bleeding events, including ovarian hemorrhage, led to the discovery of a novel gene variant causing her bleeding disorder.
Blood analysis of the patients showed decreased fibrinogen level with “markedly elevated fibrinogen/fibrin degradation products and D-dimer levels.” Attempts to treat the patient with hemostatic surgery, administration of several medications, including nafamostat mesylate, tranexamic acid, and unfractionated heparin, produced no correction of her coagulation abnormalities, and the patient experienced repeated hemorrhagic events, according to researchers from the Tokyo Saiseikai Central Hospital, Japan, and colleagues.
However, the researchers found that treatment with recombinant human thrombomodulin (rhTM) remarkably improved the patient’s pathophysiology, according to the results of a case study reported in Blood Advances.
Genetic analysis
Upon screening and sequencing of the patient’s thrombomodulin gene, a previously unreported homozygous variation, c.793T>A (p.Cys265Ser) was discovered. Under normal circumstances, the Cys265 residue forms one of three disulfide bonds in the epidermal growth factor (EGF)-like domain 1 of thrombomoduliin (TM), according to the researchers.
However, transient expression analysis of the patient’s mutation using COS-1 cells demonstrated markedly reduced expression of TM-Cys265Ser on the plasma membrane relative to wild-type TM. The TM-Cys265Ser mutant was intracellularly degraded, probably due to EGF-like domain 1 misfolding, according to the researchers and the reduced expression of TM on the endothelial cell membrane may be responsible for the disseminated intravascular coagulation-like symptoms observed in the patient, the speculated.
“The clinical symptoms of the patient in this study were characterized by recurrent hemorrhage, indicating that TM-C265S mainly causes hyperfibrinolysis rather than hypercoagulation. The C265S mutation may disrupt the timely and delicate balance between coagulation and fibrinolysis,” the researchers suggested.
The authors reported that they had no conflicts of interest.
Clinical symptoms in a 19-year-old Vietnamese woman who experienced several life-threatening bleeding events, including ovarian hemorrhage, led to the discovery of a novel gene variant causing her bleeding disorder.
Blood analysis of the patients showed decreased fibrinogen level with “markedly elevated fibrinogen/fibrin degradation products and D-dimer levels.” Attempts to treat the patient with hemostatic surgery, administration of several medications, including nafamostat mesylate, tranexamic acid, and unfractionated heparin, produced no correction of her coagulation abnormalities, and the patient experienced repeated hemorrhagic events, according to researchers from the Tokyo Saiseikai Central Hospital, Japan, and colleagues.
However, the researchers found that treatment with recombinant human thrombomodulin (rhTM) remarkably improved the patient’s pathophysiology, according to the results of a case study reported in Blood Advances.
Genetic analysis
Upon screening and sequencing of the patient’s thrombomodulin gene, a previously unreported homozygous variation, c.793T>A (p.Cys265Ser) was discovered. Under normal circumstances, the Cys265 residue forms one of three disulfide bonds in the epidermal growth factor (EGF)-like domain 1 of thrombomoduliin (TM), according to the researchers.
However, transient expression analysis of the patient’s mutation using COS-1 cells demonstrated markedly reduced expression of TM-Cys265Ser on the plasma membrane relative to wild-type TM. The TM-Cys265Ser mutant was intracellularly degraded, probably due to EGF-like domain 1 misfolding, according to the researchers and the reduced expression of TM on the endothelial cell membrane may be responsible for the disseminated intravascular coagulation-like symptoms observed in the patient, the speculated.
“The clinical symptoms of the patient in this study were characterized by recurrent hemorrhage, indicating that TM-C265S mainly causes hyperfibrinolysis rather than hypercoagulation. The C265S mutation may disrupt the timely and delicate balance between coagulation and fibrinolysis,” the researchers suggested.
The authors reported that they had no conflicts of interest.
Clinical symptoms in a 19-year-old Vietnamese woman who experienced several life-threatening bleeding events, including ovarian hemorrhage, led to the discovery of a novel gene variant causing her bleeding disorder.
Blood analysis of the patients showed decreased fibrinogen level with “markedly elevated fibrinogen/fibrin degradation products and D-dimer levels.” Attempts to treat the patient with hemostatic surgery, administration of several medications, including nafamostat mesylate, tranexamic acid, and unfractionated heparin, produced no correction of her coagulation abnormalities, and the patient experienced repeated hemorrhagic events, according to researchers from the Tokyo Saiseikai Central Hospital, Japan, and colleagues.
However, the researchers found that treatment with recombinant human thrombomodulin (rhTM) remarkably improved the patient’s pathophysiology, according to the results of a case study reported in Blood Advances.
Genetic analysis
Upon screening and sequencing of the patient’s thrombomodulin gene, a previously unreported homozygous variation, c.793T>A (p.Cys265Ser) was discovered. Under normal circumstances, the Cys265 residue forms one of three disulfide bonds in the epidermal growth factor (EGF)-like domain 1 of thrombomoduliin (TM), according to the researchers.
However, transient expression analysis of the patient’s mutation using COS-1 cells demonstrated markedly reduced expression of TM-Cys265Ser on the plasma membrane relative to wild-type TM. The TM-Cys265Ser mutant was intracellularly degraded, probably due to EGF-like domain 1 misfolding, according to the researchers and the reduced expression of TM on the endothelial cell membrane may be responsible for the disseminated intravascular coagulation-like symptoms observed in the patient, the speculated.
“The clinical symptoms of the patient in this study were characterized by recurrent hemorrhage, indicating that TM-C265S mainly causes hyperfibrinolysis rather than hypercoagulation. The C265S mutation may disrupt the timely and delicate balance between coagulation and fibrinolysis,” the researchers suggested.
The authors reported that they had no conflicts of interest.
FROM BLOOD ADVANCES
New treatments have transformed Ph+ acute lymphoblastic leukemia care
The use of novel, chemotherapy-free regimens in Philadelphia chromosome–positive acute lymphoblastic leukemia (Ph+ ALL) is poised to become the new standard of care, according to a review assessment by Nicholas Short, MD, of the University of Texas MD Anderson Cancer Center, Houston, and colleagues.
Since the introduction of highly potent BCR-ABL–mutation tyrosine kinase inhibitors (TKIs), Ph+ ALL in adults has been transformed from an historically poor prognosis disease to a relatively favorable–risk acute leukemia, according to their report published online in Clinical Lymphoma, Myeloma and Leukemia.
Dr. Short and colleagues reviewed the state of the art in Ph+ ALL care, comparing historically intensive with the more modern nonintensive treatments as part of the SOHO (Society of Hematologic Oncology) State of the Art Updates & Next Questions.
Treatment comparisons
Ph+ ALL outcomes have dramatically improved in the past 20 years, first with the addition of BCR-ABL TKIs to chemotherapy backbones and, more recently, with the development of more potent later-generation TKIs and the use of chemotherapy-free regimens.
Since the introduction of TKIs, most studies have evaluated them in combination with intensive chemotherapy such as hyper-CVAD (hyperfractionated cyclophosphamide, vincristine, doxorubicin and dexamethasone alternating with high-dose methotrexate and cytarabine) or similar regimens, according to Dr. Short and colleagues. However, the role of intensive chemotherapy in treating patients with Ph+ ALL has been increasingly questioned with the development of more active, broader spectrum TKIs such as ponatinib and effective novel monoclonal antibody constructs such as blinatumomab.
In particular, encouraging early results have been observed with blinatumomab-based, chemotherapy-free regimens, challenging previous notions that all patients with Ph+ ALL should undergo allogeneic hematopoietic stem cell transplantation (HSCT) in first remission, according to Dr. Short and colleagues. These regimens are capable of achieving deep and durable remissions without need for transplant in the vast majority of patients, particularly when combined with ponatinib.
“Given the multiple recent advances in the management of Ph+ ALL, we can reasonably envision a future in which what was once one of the most aggressive forms of leukemia is now considered nearly universally curable without either need for either chemotherapy or HSCT,” the authors concluded.
Disclosures for the authors were not reported in the review article.
The use of novel, chemotherapy-free regimens in Philadelphia chromosome–positive acute lymphoblastic leukemia (Ph+ ALL) is poised to become the new standard of care, according to a review assessment by Nicholas Short, MD, of the University of Texas MD Anderson Cancer Center, Houston, and colleagues.
Since the introduction of highly potent BCR-ABL–mutation tyrosine kinase inhibitors (TKIs), Ph+ ALL in adults has been transformed from an historically poor prognosis disease to a relatively favorable–risk acute leukemia, according to their report published online in Clinical Lymphoma, Myeloma and Leukemia.
Dr. Short and colleagues reviewed the state of the art in Ph+ ALL care, comparing historically intensive with the more modern nonintensive treatments as part of the SOHO (Society of Hematologic Oncology) State of the Art Updates & Next Questions.
Treatment comparisons
Ph+ ALL outcomes have dramatically improved in the past 20 years, first with the addition of BCR-ABL TKIs to chemotherapy backbones and, more recently, with the development of more potent later-generation TKIs and the use of chemotherapy-free regimens.
Since the introduction of TKIs, most studies have evaluated them in combination with intensive chemotherapy such as hyper-CVAD (hyperfractionated cyclophosphamide, vincristine, doxorubicin and dexamethasone alternating with high-dose methotrexate and cytarabine) or similar regimens, according to Dr. Short and colleagues. However, the role of intensive chemotherapy in treating patients with Ph+ ALL has been increasingly questioned with the development of more active, broader spectrum TKIs such as ponatinib and effective novel monoclonal antibody constructs such as blinatumomab.
In particular, encouraging early results have been observed with blinatumomab-based, chemotherapy-free regimens, challenging previous notions that all patients with Ph+ ALL should undergo allogeneic hematopoietic stem cell transplantation (HSCT) in first remission, according to Dr. Short and colleagues. These regimens are capable of achieving deep and durable remissions without need for transplant in the vast majority of patients, particularly when combined with ponatinib.
“Given the multiple recent advances in the management of Ph+ ALL, we can reasonably envision a future in which what was once one of the most aggressive forms of leukemia is now considered nearly universally curable without either need for either chemotherapy or HSCT,” the authors concluded.
Disclosures for the authors were not reported in the review article.
The use of novel, chemotherapy-free regimens in Philadelphia chromosome–positive acute lymphoblastic leukemia (Ph+ ALL) is poised to become the new standard of care, according to a review assessment by Nicholas Short, MD, of the University of Texas MD Anderson Cancer Center, Houston, and colleagues.
Since the introduction of highly potent BCR-ABL–mutation tyrosine kinase inhibitors (TKIs), Ph+ ALL in adults has been transformed from an historically poor prognosis disease to a relatively favorable–risk acute leukemia, according to their report published online in Clinical Lymphoma, Myeloma and Leukemia.
Dr. Short and colleagues reviewed the state of the art in Ph+ ALL care, comparing historically intensive with the more modern nonintensive treatments as part of the SOHO (Society of Hematologic Oncology) State of the Art Updates & Next Questions.
Treatment comparisons
Ph+ ALL outcomes have dramatically improved in the past 20 years, first with the addition of BCR-ABL TKIs to chemotherapy backbones and, more recently, with the development of more potent later-generation TKIs and the use of chemotherapy-free regimens.
Since the introduction of TKIs, most studies have evaluated them in combination with intensive chemotherapy such as hyper-CVAD (hyperfractionated cyclophosphamide, vincristine, doxorubicin and dexamethasone alternating with high-dose methotrexate and cytarabine) or similar regimens, according to Dr. Short and colleagues. However, the role of intensive chemotherapy in treating patients with Ph+ ALL has been increasingly questioned with the development of more active, broader spectrum TKIs such as ponatinib and effective novel monoclonal antibody constructs such as blinatumomab.
In particular, encouraging early results have been observed with blinatumomab-based, chemotherapy-free regimens, challenging previous notions that all patients with Ph+ ALL should undergo allogeneic hematopoietic stem cell transplantation (HSCT) in first remission, according to Dr. Short and colleagues. These regimens are capable of achieving deep and durable remissions without need for transplant in the vast majority of patients, particularly when combined with ponatinib.
“Given the multiple recent advances in the management of Ph+ ALL, we can reasonably envision a future in which what was once one of the most aggressive forms of leukemia is now considered nearly universally curable without either need for either chemotherapy or HSCT,” the authors concluded.
Disclosures for the authors were not reported in the review article.
FROM CLINICAL LYMPHOMA, MYELOMA AND LEUKEMIA
Infusion shown effective for acquired von Willebrand disease
Acquired von Willebrand disease (aVWD) is a rare and serious condition associated with lymphoproliferative disorders, malignancy, autoimmune disorders, and cardiovascular disease. It is most commonly caused by monoclonal gammopathy of undetermined significance (MGUS), which acts to clear von Willebrand factor from the patient’s bloodstream. However, a continuous-infusion of plasma-derived von Willebrand factor (VWF) concentrate provided adequate hemostasis in aVWD resulting from MGUS, according to Kathryn E. Dane, PharmD, of Johns Hopkins University, Baltimore, and colleagues.
The infusion rapidly achieved target ristocetin cofactor activity with or without intravenous immunoglobulin in three patients, as detailed in the report published online in Blood Advances.
The three consecutive patients with aVWD were treated with plasma-derived VWF concentrate administered for periprocedural optimization (patient 1, an 85-year old woman) or to treat bleeding episodes (patient 2, an 88-year-old man; and patient 3, a 53-year-old woman). Factor VIII activity was measured via a 1-stage clotting test and von Willebrand factor activity was measured with a ristocetin cofactor assay.
Promising results
All three patients demonstrated increased VWF ristocetin cofactor and factor VIII activities within hours of initiation of the continuous infusion concentrate, according to the report.
“We hypothesize that the efficacy of CI VWF concentrate in aVWD may be related to continuous provision of VWF, allowing binding and neutralization of anti-VWF IgG antibodies, and providing adequate circulating unbound VWF for appropriate hemostatic efficacy,” the researchers concluded.
The authors reported that they had no competing financial interests.
Acquired von Willebrand disease (aVWD) is a rare and serious condition associated with lymphoproliferative disorders, malignancy, autoimmune disorders, and cardiovascular disease. It is most commonly caused by monoclonal gammopathy of undetermined significance (MGUS), which acts to clear von Willebrand factor from the patient’s bloodstream. However, a continuous-infusion of plasma-derived von Willebrand factor (VWF) concentrate provided adequate hemostasis in aVWD resulting from MGUS, according to Kathryn E. Dane, PharmD, of Johns Hopkins University, Baltimore, and colleagues.
The infusion rapidly achieved target ristocetin cofactor activity with or without intravenous immunoglobulin in three patients, as detailed in the report published online in Blood Advances.
The three consecutive patients with aVWD were treated with plasma-derived VWF concentrate administered for periprocedural optimization (patient 1, an 85-year old woman) or to treat bleeding episodes (patient 2, an 88-year-old man; and patient 3, a 53-year-old woman). Factor VIII activity was measured via a 1-stage clotting test and von Willebrand factor activity was measured with a ristocetin cofactor assay.
Promising results
All three patients demonstrated increased VWF ristocetin cofactor and factor VIII activities within hours of initiation of the continuous infusion concentrate, according to the report.
“We hypothesize that the efficacy of CI VWF concentrate in aVWD may be related to continuous provision of VWF, allowing binding and neutralization of anti-VWF IgG antibodies, and providing adequate circulating unbound VWF for appropriate hemostatic efficacy,” the researchers concluded.
The authors reported that they had no competing financial interests.
Acquired von Willebrand disease (aVWD) is a rare and serious condition associated with lymphoproliferative disorders, malignancy, autoimmune disorders, and cardiovascular disease. It is most commonly caused by monoclonal gammopathy of undetermined significance (MGUS), which acts to clear von Willebrand factor from the patient’s bloodstream. However, a continuous-infusion of plasma-derived von Willebrand factor (VWF) concentrate provided adequate hemostasis in aVWD resulting from MGUS, according to Kathryn E. Dane, PharmD, of Johns Hopkins University, Baltimore, and colleagues.
The infusion rapidly achieved target ristocetin cofactor activity with or without intravenous immunoglobulin in three patients, as detailed in the report published online in Blood Advances.
The three consecutive patients with aVWD were treated with plasma-derived VWF concentrate administered for periprocedural optimization (patient 1, an 85-year old woman) or to treat bleeding episodes (patient 2, an 88-year-old man; and patient 3, a 53-year-old woman). Factor VIII activity was measured via a 1-stage clotting test and von Willebrand factor activity was measured with a ristocetin cofactor assay.
Promising results
All three patients demonstrated increased VWF ristocetin cofactor and factor VIII activities within hours of initiation of the continuous infusion concentrate, according to the report.
“We hypothesize that the efficacy of CI VWF concentrate in aVWD may be related to continuous provision of VWF, allowing binding and neutralization of anti-VWF IgG antibodies, and providing adequate circulating unbound VWF for appropriate hemostatic efficacy,” the researchers concluded.
The authors reported that they had no competing financial interests.
FROM BLOOD ADVANCES
Recombinant factor IX fusion protein benefited untreated patients with hemophilia B
Recombinant factor IX Fc fusion protein was effective, both as prophylaxis and in the treatment of bleeding episodes in previously untreated boys (< 18 years of age) with hemophilia B, according to Beatrice Nolan, MD, of Children’s Health Ireland at Crumlin, Dublin, and colleagues.
PUPs B-LONG is an open-label, single-arm, multicenter, phase 3 trial (Clinicaltrials.gov: NCT02234310) of rFIXFc in 33 previously untreated patients (PUPs) with hemophilia B; 79% of the patients were younger than 1 year of age at study entry. The primary endpoint was occurrence of inhibitor development, with a secondary endpoint of annualized bleed rate, according to the results of the study, published online in Blood Advances.
At the onset of the study, 22 patients (67%) received on-demand treatment and 11 (33%) started with a prophylactic regimen. Seventeen (77%) of 22 patients who initially received on-demand treatment subsequently switched to prophylaxis, for a total of 28 patients receiving prophylaxis during the study, according to the researchers. Twenty-seven patients (82%) completed the study, and six (18%) discontinued early.
Promising results
The median patient annualized bleeding rate was 1.24 for patients receiving prophylaxis. Most (85%) bleeding episodes required only one infusion for bleed resolution, according to the researchers.
One patient developed a low-titer inhibitor after 11 exposure days to rFIXFc; no high-titer inhibitors were detected. However, 23 patients (70%) had 58 treatment-emergent serious adverse events, of which 2 were assessed as related to treatment (FIX inhibition and hypersensitivity in 1 patient, resulting in withdrawal).
“rFIXFc was generally well tolerated. The incidence of inhibitor development was consistent with other FIX products, with 1 low-titer inhibitor and no high-titer inhibitors detected. In addition, rFIXFc was effective, both as prophylaxis and in the treatment of bleeding episodes,” the researchers concluded.
The PUPs B-LONG study was sponsored by Sanofi and Sobi. Dr. Nolan reported personal fees from Sobi and sponsorship from Sanofi and several other pharmaceutical companies. The other authors reported financial support from a variety of pharmaceutical companies.
Recombinant factor IX Fc fusion protein was effective, both as prophylaxis and in the treatment of bleeding episodes in previously untreated boys (< 18 years of age) with hemophilia B, according to Beatrice Nolan, MD, of Children’s Health Ireland at Crumlin, Dublin, and colleagues.
PUPs B-LONG is an open-label, single-arm, multicenter, phase 3 trial (Clinicaltrials.gov: NCT02234310) of rFIXFc in 33 previously untreated patients (PUPs) with hemophilia B; 79% of the patients were younger than 1 year of age at study entry. The primary endpoint was occurrence of inhibitor development, with a secondary endpoint of annualized bleed rate, according to the results of the study, published online in Blood Advances.
At the onset of the study, 22 patients (67%) received on-demand treatment and 11 (33%) started with a prophylactic regimen. Seventeen (77%) of 22 patients who initially received on-demand treatment subsequently switched to prophylaxis, for a total of 28 patients receiving prophylaxis during the study, according to the researchers. Twenty-seven patients (82%) completed the study, and six (18%) discontinued early.
Promising results
The median patient annualized bleeding rate was 1.24 for patients receiving prophylaxis. Most (85%) bleeding episodes required only one infusion for bleed resolution, according to the researchers.
One patient developed a low-titer inhibitor after 11 exposure days to rFIXFc; no high-titer inhibitors were detected. However, 23 patients (70%) had 58 treatment-emergent serious adverse events, of which 2 were assessed as related to treatment (FIX inhibition and hypersensitivity in 1 patient, resulting in withdrawal).
“rFIXFc was generally well tolerated. The incidence of inhibitor development was consistent with other FIX products, with 1 low-titer inhibitor and no high-titer inhibitors detected. In addition, rFIXFc was effective, both as prophylaxis and in the treatment of bleeding episodes,” the researchers concluded.
The PUPs B-LONG study was sponsored by Sanofi and Sobi. Dr. Nolan reported personal fees from Sobi and sponsorship from Sanofi and several other pharmaceutical companies. The other authors reported financial support from a variety of pharmaceutical companies.
Recombinant factor IX Fc fusion protein was effective, both as prophylaxis and in the treatment of bleeding episodes in previously untreated boys (< 18 years of age) with hemophilia B, according to Beatrice Nolan, MD, of Children’s Health Ireland at Crumlin, Dublin, and colleagues.
PUPs B-LONG is an open-label, single-arm, multicenter, phase 3 trial (Clinicaltrials.gov: NCT02234310) of rFIXFc in 33 previously untreated patients (PUPs) with hemophilia B; 79% of the patients were younger than 1 year of age at study entry. The primary endpoint was occurrence of inhibitor development, with a secondary endpoint of annualized bleed rate, according to the results of the study, published online in Blood Advances.
At the onset of the study, 22 patients (67%) received on-demand treatment and 11 (33%) started with a prophylactic regimen. Seventeen (77%) of 22 patients who initially received on-demand treatment subsequently switched to prophylaxis, for a total of 28 patients receiving prophylaxis during the study, according to the researchers. Twenty-seven patients (82%) completed the study, and six (18%) discontinued early.
Promising results
The median patient annualized bleeding rate was 1.24 for patients receiving prophylaxis. Most (85%) bleeding episodes required only one infusion for bleed resolution, according to the researchers.
One patient developed a low-titer inhibitor after 11 exposure days to rFIXFc; no high-titer inhibitors were detected. However, 23 patients (70%) had 58 treatment-emergent serious adverse events, of which 2 were assessed as related to treatment (FIX inhibition and hypersensitivity in 1 patient, resulting in withdrawal).
“rFIXFc was generally well tolerated. The incidence of inhibitor development was consistent with other FIX products, with 1 low-titer inhibitor and no high-titer inhibitors detected. In addition, rFIXFc was effective, both as prophylaxis and in the treatment of bleeding episodes,” the researchers concluded.
The PUPs B-LONG study was sponsored by Sanofi and Sobi. Dr. Nolan reported personal fees from Sobi and sponsorship from Sanofi and several other pharmaceutical companies. The other authors reported financial support from a variety of pharmaceutical companies.
FROM BLOOD ADVANCES
Bleeding events tied to higher mortality in patients with factor V inhibition
Coagulation factor V (FV) inhibitor is a rare disease with a mortality rate of nearly 15%. Increased mortality was significantly associated with the incidence of major bleeding, according to a review of PubMed case reports published in Thrombosis Update.
FV autoantibodies are most often detected in patients in the postoperative state, in those who have received a blood transfusion, in patients treated with antibiotics, and in those with immune diseases, according to the online report by Hideo Wada, MD, PhD, of the Mie Prefectural General Medical Center, Yokkaichi, Japan, and colleagues. These patients who acquired immune FV inhibitor (AIFVD) vary widely in symptoms from asymptomatic to mild or severe hemorrhagic manifestations, with some reports of thrombotic complications, the authors added.
Their review assessed the PubMed literature from Jan. 1, 1968, to July 31, 2020, and found 212 case reports on acquired FV deficiency. Of these, 150 cases with confirmed FV inhibitor positivity were included. The 150 reported cases of FV inhibitor were primarily from the United States (n = 48) and Japan (n = 43). The median patient age was 68.0 years, and the female to male ratio of patients was 0.47, according to the authors. The largest associated percentage of underlying conditions were postoperative state (25.3%), idiopathic (18.7%), infection (12.7%) and malignant neoplasms and autoimmune disease, at 7.3% each.
Major bleeds
A total of 73 cases were positive for major bleeding (48.7%) and 30 cases were negative (20.0%), while the rest were undetermined (31.3%). The FV activity was ≤ 28% in all patients with FV inhibitor.
The overall mortality rate was 14.6%, with half of the nonsurvivors dying of major bleeding. The mortality rate was more than twofold higher in the group with major bleeding (23.3% mortality) compared to the group without major bleeding (10.0%), yielding an odds ratio of 2.73 of death because of a major bleed. The most frequent types of fatal bleeding were intracranial bleeding and gastrointestinal bleeding. Of the 20 deaths reported in 135 patients with data, the causes of death were major bleeding (12 patients), infection (6 patients) and thrombosis (2 patients). Remission was observed in three of the nonsurvivors, indicating that even after remission, patients with FV inhibitor might still be susceptible to infection or thrombosis, according to the authors.
“[Major bleeding] should be treated aggressively; however, the best treatment is not clear and even patients in remission should be followed closely due to the risk of death from infection or thrombosis,” the authors concluded.
They reported having no conflicts of interest.
Coagulation factor V (FV) inhibitor is a rare disease with a mortality rate of nearly 15%. Increased mortality was significantly associated with the incidence of major bleeding, according to a review of PubMed case reports published in Thrombosis Update.
FV autoantibodies are most often detected in patients in the postoperative state, in those who have received a blood transfusion, in patients treated with antibiotics, and in those with immune diseases, according to the online report by Hideo Wada, MD, PhD, of the Mie Prefectural General Medical Center, Yokkaichi, Japan, and colleagues. These patients who acquired immune FV inhibitor (AIFVD) vary widely in symptoms from asymptomatic to mild or severe hemorrhagic manifestations, with some reports of thrombotic complications, the authors added.
Their review assessed the PubMed literature from Jan. 1, 1968, to July 31, 2020, and found 212 case reports on acquired FV deficiency. Of these, 150 cases with confirmed FV inhibitor positivity were included. The 150 reported cases of FV inhibitor were primarily from the United States (n = 48) and Japan (n = 43). The median patient age was 68.0 years, and the female to male ratio of patients was 0.47, according to the authors. The largest associated percentage of underlying conditions were postoperative state (25.3%), idiopathic (18.7%), infection (12.7%) and malignant neoplasms and autoimmune disease, at 7.3% each.
Major bleeds
A total of 73 cases were positive for major bleeding (48.7%) and 30 cases were negative (20.0%), while the rest were undetermined (31.3%). The FV activity was ≤ 28% in all patients with FV inhibitor.
The overall mortality rate was 14.6%, with half of the nonsurvivors dying of major bleeding. The mortality rate was more than twofold higher in the group with major bleeding (23.3% mortality) compared to the group without major bleeding (10.0%), yielding an odds ratio of 2.73 of death because of a major bleed. The most frequent types of fatal bleeding were intracranial bleeding and gastrointestinal bleeding. Of the 20 deaths reported in 135 patients with data, the causes of death were major bleeding (12 patients), infection (6 patients) and thrombosis (2 patients). Remission was observed in three of the nonsurvivors, indicating that even after remission, patients with FV inhibitor might still be susceptible to infection or thrombosis, according to the authors.
“[Major bleeding] should be treated aggressively; however, the best treatment is not clear and even patients in remission should be followed closely due to the risk of death from infection or thrombosis,” the authors concluded.
They reported having no conflicts of interest.
Coagulation factor V (FV) inhibitor is a rare disease with a mortality rate of nearly 15%. Increased mortality was significantly associated with the incidence of major bleeding, according to a review of PubMed case reports published in Thrombosis Update.
FV autoantibodies are most often detected in patients in the postoperative state, in those who have received a blood transfusion, in patients treated with antibiotics, and in those with immune diseases, according to the online report by Hideo Wada, MD, PhD, of the Mie Prefectural General Medical Center, Yokkaichi, Japan, and colleagues. These patients who acquired immune FV inhibitor (AIFVD) vary widely in symptoms from asymptomatic to mild or severe hemorrhagic manifestations, with some reports of thrombotic complications, the authors added.
Their review assessed the PubMed literature from Jan. 1, 1968, to July 31, 2020, and found 212 case reports on acquired FV deficiency. Of these, 150 cases with confirmed FV inhibitor positivity were included. The 150 reported cases of FV inhibitor were primarily from the United States (n = 48) and Japan (n = 43). The median patient age was 68.0 years, and the female to male ratio of patients was 0.47, according to the authors. The largest associated percentage of underlying conditions were postoperative state (25.3%), idiopathic (18.7%), infection (12.7%) and malignant neoplasms and autoimmune disease, at 7.3% each.
Major bleeds
A total of 73 cases were positive for major bleeding (48.7%) and 30 cases were negative (20.0%), while the rest were undetermined (31.3%). The FV activity was ≤ 28% in all patients with FV inhibitor.
The overall mortality rate was 14.6%, with half of the nonsurvivors dying of major bleeding. The mortality rate was more than twofold higher in the group with major bleeding (23.3% mortality) compared to the group without major bleeding (10.0%), yielding an odds ratio of 2.73 of death because of a major bleed. The most frequent types of fatal bleeding were intracranial bleeding and gastrointestinal bleeding. Of the 20 deaths reported in 135 patients with data, the causes of death were major bleeding (12 patients), infection (6 patients) and thrombosis (2 patients). Remission was observed in three of the nonsurvivors, indicating that even after remission, patients with FV inhibitor might still be susceptible to infection or thrombosis, according to the authors.
“[Major bleeding] should be treated aggressively; however, the best treatment is not clear and even patients in remission should be followed closely due to the risk of death from infection or thrombosis,” the authors concluded.
They reported having no conflicts of interest.
FROM THROMBOSIS UPDATE
First year of life sees initial bleeding episodes in children with von Willebrand disease
To remedy a lack of data on infants and toddlers with von Willebrand disease (VWD), researchers examined data on patients collected from the U.S. Hemophilia Treatment Center Network. They examined birth characteristics, bleeding episodes, and complications experienced by 105 patients with VWD who were younger than 2 years of age.
For these patients, the mean age of diagnosis was 7 months, with little variation by sex. Patients with type 2 VWD were diagnosed earlier than those with types 1 or 3 (P = .04), and those with a family history of VWD were diagnosed approximately 4 months earlier than those with none (P < .001), according to the report by Brandi Dupervil, DHSC, of the National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, and colleagues.
Approximately 14% of the patients were born preterm and 13% had low birth weight, proportions that were higher than national preterm birth rates (approximately 12% and 8%, respectively). There was no way of knowing from the data whether this was due to the presence of VWD or other factors, according to the report (Blood Adv. 2021;5[8]:2079-86).
Specialized care
The study found that initial bleeding episodes were most commonly oropharyngeal, related to circumcision, or intracranial or extracranial, and that most initial bleeding episodes occurred within the first year of life, according to the researchers.
Overall, there were 274 bleeding episodes among 73 children, including oral/nasal episodes (38 patients experienced 166 episodes), soft tissue hematomas (15 patients experienced 57 episodes), and head injuries, including skull fractures (13 patients experienced 19 episodes), according to the report.
In terms of treatment, among the two-thirds of the patients who had intervention to prevent or treat bleeding, most received either plasma-derived VW factor/factor VIII concentrates or antifibrinolytics.
Overall, the researchers advocated a team approach to treating these children “including genetic counselors throughout the prepartum period who work to increase expectant mothers’ understanding of the risks associated with having a child with VWD.”
They also recommended the input of “adult and pediatric hematologists, obstetrician gynecologists, genetic counselors, nurses, and social workers throughout the pre- and postpartum period who seek to optimize outcomes and disease management.”
The authors reported that they had no competing interests.
To remedy a lack of data on infants and toddlers with von Willebrand disease (VWD), researchers examined data on patients collected from the U.S. Hemophilia Treatment Center Network. They examined birth characteristics, bleeding episodes, and complications experienced by 105 patients with VWD who were younger than 2 years of age.
For these patients, the mean age of diagnosis was 7 months, with little variation by sex. Patients with type 2 VWD were diagnosed earlier than those with types 1 or 3 (P = .04), and those with a family history of VWD were diagnosed approximately 4 months earlier than those with none (P < .001), according to the report by Brandi Dupervil, DHSC, of the National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, and colleagues.
Approximately 14% of the patients were born preterm and 13% had low birth weight, proportions that were higher than national preterm birth rates (approximately 12% and 8%, respectively). There was no way of knowing from the data whether this was due to the presence of VWD or other factors, according to the report (Blood Adv. 2021;5[8]:2079-86).
Specialized care
The study found that initial bleeding episodes were most commonly oropharyngeal, related to circumcision, or intracranial or extracranial, and that most initial bleeding episodes occurred within the first year of life, according to the researchers.
Overall, there were 274 bleeding episodes among 73 children, including oral/nasal episodes (38 patients experienced 166 episodes), soft tissue hematomas (15 patients experienced 57 episodes), and head injuries, including skull fractures (13 patients experienced 19 episodes), according to the report.
In terms of treatment, among the two-thirds of the patients who had intervention to prevent or treat bleeding, most received either plasma-derived VW factor/factor VIII concentrates or antifibrinolytics.
Overall, the researchers advocated a team approach to treating these children “including genetic counselors throughout the prepartum period who work to increase expectant mothers’ understanding of the risks associated with having a child with VWD.”
They also recommended the input of “adult and pediatric hematologists, obstetrician gynecologists, genetic counselors, nurses, and social workers throughout the pre- and postpartum period who seek to optimize outcomes and disease management.”
The authors reported that they had no competing interests.
To remedy a lack of data on infants and toddlers with von Willebrand disease (VWD), researchers examined data on patients collected from the U.S. Hemophilia Treatment Center Network. They examined birth characteristics, bleeding episodes, and complications experienced by 105 patients with VWD who were younger than 2 years of age.
For these patients, the mean age of diagnosis was 7 months, with little variation by sex. Patients with type 2 VWD were diagnosed earlier than those with types 1 or 3 (P = .04), and those with a family history of VWD were diagnosed approximately 4 months earlier than those with none (P < .001), according to the report by Brandi Dupervil, DHSC, of the National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, and colleagues.
Approximately 14% of the patients were born preterm and 13% had low birth weight, proportions that were higher than national preterm birth rates (approximately 12% and 8%, respectively). There was no way of knowing from the data whether this was due to the presence of VWD or other factors, according to the report (Blood Adv. 2021;5[8]:2079-86).
Specialized care
The study found that initial bleeding episodes were most commonly oropharyngeal, related to circumcision, or intracranial or extracranial, and that most initial bleeding episodes occurred within the first year of life, according to the researchers.
Overall, there were 274 bleeding episodes among 73 children, including oral/nasal episodes (38 patients experienced 166 episodes), soft tissue hematomas (15 patients experienced 57 episodes), and head injuries, including skull fractures (13 patients experienced 19 episodes), according to the report.
In terms of treatment, among the two-thirds of the patients who had intervention to prevent or treat bleeding, most received either plasma-derived VW factor/factor VIII concentrates or antifibrinolytics.
Overall, the researchers advocated a team approach to treating these children “including genetic counselors throughout the prepartum period who work to increase expectant mothers’ understanding of the risks associated with having a child with VWD.”
They also recommended the input of “adult and pediatric hematologists, obstetrician gynecologists, genetic counselors, nurses, and social workers throughout the pre- and postpartum period who seek to optimize outcomes and disease management.”
The authors reported that they had no competing interests.
FROM BLOOD ADVANCES
Choosing the right R-CHOP dosage for elderly patients with DLBCL
Physicians often face the choice of whether to treat elderly patients with diffuse large B-cell lymphoma (DLBCL) with a full or reduced dose intensity (DI) of R-CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone + rituximab), according to Edward J. Bataillard of the Imperial College Healthcare National Health Service Trust, London, and colleagues.
To address this issue, the researchers conducted a systematic review assessing the impact of R-CHOP DI on DLBCL survival outcomes, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Protocols (PRISMA-P) guidelines. They found that greater than 80 years of age is an important cutoff for treating patients with a reduced R-CHOP dosage, according to their results, published in Blood Advances (2021;5[9]:2426-37).
Cutoff at 80 years of age
Their final review comprised 13 studies including 5,188 patients. Overall, the lower DI (intended or relative) was associated with inferior survival in seven of nine studies reporting crude survival analyses. In addition, most studies and those larger studies of higher quality showed poorer outcomes associated with reduced R-CHOP DI.
However, in subgroups of patients aged 80 years or more, survival was not consistently affected by the use of lower dosage R-CHOP, according to the researchers.
“We found evidence of improved survival with higher RDIs (up to R-CHOP-21) in those aged < 80 years, but the literature to date does not support full-dose intensity in those 80 years [or older],” they stated.
However, the researchers concluded that: “In the absence of improved options beyond R-CHOP in DLBCL over the past 20 years, prospective studies of DI are warranted, despite the recognized challenges involved.”
Two of the authors reported being previously employed by Roche. A third served as a consultant and adviser and received honoraria from Roche and other pharmaceutical companies. Several authors reported disclosures related to multiple other pharmaceutical companies.
Physicians often face the choice of whether to treat elderly patients with diffuse large B-cell lymphoma (DLBCL) with a full or reduced dose intensity (DI) of R-CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone + rituximab), according to Edward J. Bataillard of the Imperial College Healthcare National Health Service Trust, London, and colleagues.
To address this issue, the researchers conducted a systematic review assessing the impact of R-CHOP DI on DLBCL survival outcomes, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Protocols (PRISMA-P) guidelines. They found that greater than 80 years of age is an important cutoff for treating patients with a reduced R-CHOP dosage, according to their results, published in Blood Advances (2021;5[9]:2426-37).
Cutoff at 80 years of age
Their final review comprised 13 studies including 5,188 patients. Overall, the lower DI (intended or relative) was associated with inferior survival in seven of nine studies reporting crude survival analyses. In addition, most studies and those larger studies of higher quality showed poorer outcomes associated with reduced R-CHOP DI.
However, in subgroups of patients aged 80 years or more, survival was not consistently affected by the use of lower dosage R-CHOP, according to the researchers.
“We found evidence of improved survival with higher RDIs (up to R-CHOP-21) in those aged < 80 years, but the literature to date does not support full-dose intensity in those 80 years [or older],” they stated.
However, the researchers concluded that: “In the absence of improved options beyond R-CHOP in DLBCL over the past 20 years, prospective studies of DI are warranted, despite the recognized challenges involved.”
Two of the authors reported being previously employed by Roche. A third served as a consultant and adviser and received honoraria from Roche and other pharmaceutical companies. Several authors reported disclosures related to multiple other pharmaceutical companies.
Physicians often face the choice of whether to treat elderly patients with diffuse large B-cell lymphoma (DLBCL) with a full or reduced dose intensity (DI) of R-CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone + rituximab), according to Edward J. Bataillard of the Imperial College Healthcare National Health Service Trust, London, and colleagues.
To address this issue, the researchers conducted a systematic review assessing the impact of R-CHOP DI on DLBCL survival outcomes, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Protocols (PRISMA-P) guidelines. They found that greater than 80 years of age is an important cutoff for treating patients with a reduced R-CHOP dosage, according to their results, published in Blood Advances (2021;5[9]:2426-37).
Cutoff at 80 years of age
Their final review comprised 13 studies including 5,188 patients. Overall, the lower DI (intended or relative) was associated with inferior survival in seven of nine studies reporting crude survival analyses. In addition, most studies and those larger studies of higher quality showed poorer outcomes associated with reduced R-CHOP DI.
However, in subgroups of patients aged 80 years or more, survival was not consistently affected by the use of lower dosage R-CHOP, according to the researchers.
“We found evidence of improved survival with higher RDIs (up to R-CHOP-21) in those aged < 80 years, but the literature to date does not support full-dose intensity in those 80 years [or older],” they stated.
However, the researchers concluded that: “In the absence of improved options beyond R-CHOP in DLBCL over the past 20 years, prospective studies of DI are warranted, despite the recognized challenges involved.”
Two of the authors reported being previously employed by Roche. A third served as a consultant and adviser and received honoraria from Roche and other pharmaceutical companies. Several authors reported disclosures related to multiple other pharmaceutical companies.
FROM BLOOD ADVANCES