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Analysis yields ‘strong evidence’ for benefit of physical activity in NAFLD

Strong evidence for benefit of exercise in NAFLD
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Regular physical exercise significantly improved measures of nonalcoholic fatty liver disease independently of dietary changes, according to a meta-analysis of randomized controlled* trials published in the October issue of Clinical Gastroenterology and Hepatology.

“On the basis of the current findings, physical activity should be recommended not only in combination with dietary changes but also independently as an effective approach to manage NAFLD,” wrote Lorenzo Orci, MD, and his associates at the University of Geneva. “We propose that the level of evidence surrounding the specific role of physical activity in the management of NAFLD is now sufficient to be awarded a grade of Ia.”

 


Nonalcoholic fatty liver disease, “the hepatic manifestation of metabolic syndrome,” affects at least one in four U.S. adults and 15%-35% of individuals in Europe, the Middle East, China, and Japan, the researchers noted. Dietary changes are the cornerstone of NAFLD management, and there is less evidence for how physical exercise affects liver fat content. Therefore, the researchers searched MEDLINE, Embase, and the Cochrane databases from inception through October 2015 to find randomized trials of the impact of physical activity on markers of liver steatosis and liver inflammation in patients diagnosed with NAFLD, obesity, type 2 diabetes, or metabolic syndrome. This approach yielded 28 trials with data from more than 1,600 patients. Only two trials were multicenter, 13 required participants to have an NAFLD diagnosis, four focused on type 2 diabetes, and most of the rest included sedentary obese patients without requiring a diagnosis of NAFLD, the researchers said (Clin Gastroenterol Hepatol. 2016 May 4. doi: 10.1016/j.cgh.2016.04.036).

After researchers accounted for dietary changes, physical activity led to a significant drop in intrahepatic lipid content with a standardized mean difference of –0.69 compared with controls (95% confidence interval, –0.90 to –0.48; P less than .0001). “Because effect sizes such as standard mean difference [SMD] are difficult to interpret, the translation of such a statistical measure into a clinically relevant notion has been the focus of research for more than a decade,” the investigators added. “A commonly used interpretation was proposed by Cohen, who suggested that SMDs of 0.2, 0.5, and 0.8 correspond to small, moderate, and large effect sizes, respectively. By using this rule of thumb, our results indicate that physical activity exerts a moderate-to-large impact on the reduction of intrahepatic lipid content.”

Exercise reduced liver fat content even more in pediatric patients (SMD, –0.75; 95% CI, –0.1 to –0.5; P less than .0001) and in patients who had been specifically diagnosed with NAFLD (SMD, –0.86; 95% CI, –1.26 to –0.46; P less than .0001). Patients with the highest baseline body mass index also seemed to benefit more than patients with lower baseline BMI (P = .04). Indeed, exercise reduced BMI itself by a weighted mean difference of 0.8 (95% CI, –1.22 to 0.38; P less than .001), the researchers noted. Exercise intensity did not seem to affect the likelihood of benefit. There was a trend toward a greater effect of aerobic over resistance training (P = .06), and few studies examined the effects of combining both types of exercise.

The multivariable analysis also linked physical activity to an average 3.30 IU/L drop in alanine aminotransferase levels (95% CI, –5.57 to –1.04) and to a 4.9 IU/L decrease in aspartate aminotransferase levels (95% CI, –8.68 to –1.02). The investigators were unable to assess the long-term effects of physical exercise, nor its effects on hepatic fibrosis or inflammation, they noted. Nonetheless, the moderate to large effect size “provides strong evidence for the recommendation of physical activity as an effective intervention in the treatment of NAFLD,” they concluded. “Physical activity is also associated with an improvement in blood levels of aminotransferases and is particularly beneficial in patients presenting with severe obesity at baseline.”

The work was funded by the Ligue Genevoise contre le Cancer and the Dr Henri Dubois-Ferrière/Dinu Lipatti Foundation and by the Swiss National Science Foundation. The investigators had no disclosures.

*Content was updated on 10/25/2016 

 

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There has been tremendous interest in developing pharmacologic treatments for nonalcoholic steatohepatitis, especially in the Western world. There has not been significant enthusiasm for investigating exercise-based lifestyle modification as a primary treatment for NASH. Although the meta-analysis by Orci et al. included 28 studies, there are only 2 studies (combined, fewer than 100 patients) that examined the effect of exercise on liver histology in NASH and they both suggest that lifestyle modification consisting of exercise in addition to dietary modification improves liver histology in NASH. A seminal study was published by Vilar-Gomez et al. (Gastroenterology. 2015;149:367-78) that showed that a lifestyle modification consisting of reduction in caloric intake by 750 kcal/d along with low-intensity exercise (200 minutes of walking each week) led to significant improvement in liver histology, especially in those who lost at least 5% of their body weight.

Dr. Naga P. Chalasani
What do these data mean for practicing clinicians who are seeing an ever growing number of patients with NAFLD? A serious attempt at lifestyle modification should be the first-line treatment option for patients with NAFLD and NASH. Patients should be given a formal target for weight loss and exercise and should be encouraged to seek formal consultation with a nutritionist and perhaps a personal trainer.
 

Naga Chalasani, MD, AGAF, FACG, FAASLD, is the David W. Crabb Professor and director of the division of gastroenterology and hepatology, Indiana University, Purdue. He had no relevant conflicts.

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There has been tremendous interest in developing pharmacologic treatments for nonalcoholic steatohepatitis, especially in the Western world. There has not been significant enthusiasm for investigating exercise-based lifestyle modification as a primary treatment for NASH. Although the meta-analysis by Orci et al. included 28 studies, there are only 2 studies (combined, fewer than 100 patients) that examined the effect of exercise on liver histology in NASH and they both suggest that lifestyle modification consisting of exercise in addition to dietary modification improves liver histology in NASH. A seminal study was published by Vilar-Gomez et al. (Gastroenterology. 2015;149:367-78) that showed that a lifestyle modification consisting of reduction in caloric intake by 750 kcal/d along with low-intensity exercise (200 minutes of walking each week) led to significant improvement in liver histology, especially in those who lost at least 5% of their body weight.

Dr. Naga P. Chalasani
What do these data mean for practicing clinicians who are seeing an ever growing number of patients with NAFLD? A serious attempt at lifestyle modification should be the first-line treatment option for patients with NAFLD and NASH. Patients should be given a formal target for weight loss and exercise and should be encouraged to seek formal consultation with a nutritionist and perhaps a personal trainer.
 

Naga Chalasani, MD, AGAF, FACG, FAASLD, is the David W. Crabb Professor and director of the division of gastroenterology and hepatology, Indiana University, Purdue. He had no relevant conflicts.

Body

 

There has been tremendous interest in developing pharmacologic treatments for nonalcoholic steatohepatitis, especially in the Western world. There has not been significant enthusiasm for investigating exercise-based lifestyle modification as a primary treatment for NASH. Although the meta-analysis by Orci et al. included 28 studies, there are only 2 studies (combined, fewer than 100 patients) that examined the effect of exercise on liver histology in NASH and they both suggest that lifestyle modification consisting of exercise in addition to dietary modification improves liver histology in NASH. A seminal study was published by Vilar-Gomez et al. (Gastroenterology. 2015;149:367-78) that showed that a lifestyle modification consisting of reduction in caloric intake by 750 kcal/d along with low-intensity exercise (200 minutes of walking each week) led to significant improvement in liver histology, especially in those who lost at least 5% of their body weight.

Dr. Naga P. Chalasani
What do these data mean for practicing clinicians who are seeing an ever growing number of patients with NAFLD? A serious attempt at lifestyle modification should be the first-line treatment option for patients with NAFLD and NASH. Patients should be given a formal target for weight loss and exercise and should be encouraged to seek formal consultation with a nutritionist and perhaps a personal trainer.
 

Naga Chalasani, MD, AGAF, FACG, FAASLD, is the David W. Crabb Professor and director of the division of gastroenterology and hepatology, Indiana University, Purdue. He had no relevant conflicts.

Title
Strong evidence for benefit of exercise in NAFLD
Strong evidence for benefit of exercise in NAFLD

 

Regular physical exercise significantly improved measures of nonalcoholic fatty liver disease independently of dietary changes, according to a meta-analysis of randomized controlled* trials published in the October issue of Clinical Gastroenterology and Hepatology.

“On the basis of the current findings, physical activity should be recommended not only in combination with dietary changes but also independently as an effective approach to manage NAFLD,” wrote Lorenzo Orci, MD, and his associates at the University of Geneva. “We propose that the level of evidence surrounding the specific role of physical activity in the management of NAFLD is now sufficient to be awarded a grade of Ia.”

 


Nonalcoholic fatty liver disease, “the hepatic manifestation of metabolic syndrome,” affects at least one in four U.S. adults and 15%-35% of individuals in Europe, the Middle East, China, and Japan, the researchers noted. Dietary changes are the cornerstone of NAFLD management, and there is less evidence for how physical exercise affects liver fat content. Therefore, the researchers searched MEDLINE, Embase, and the Cochrane databases from inception through October 2015 to find randomized trials of the impact of physical activity on markers of liver steatosis and liver inflammation in patients diagnosed with NAFLD, obesity, type 2 diabetes, or metabolic syndrome. This approach yielded 28 trials with data from more than 1,600 patients. Only two trials were multicenter, 13 required participants to have an NAFLD diagnosis, four focused on type 2 diabetes, and most of the rest included sedentary obese patients without requiring a diagnosis of NAFLD, the researchers said (Clin Gastroenterol Hepatol. 2016 May 4. doi: 10.1016/j.cgh.2016.04.036).

After researchers accounted for dietary changes, physical activity led to a significant drop in intrahepatic lipid content with a standardized mean difference of –0.69 compared with controls (95% confidence interval, –0.90 to –0.48; P less than .0001). “Because effect sizes such as standard mean difference [SMD] are difficult to interpret, the translation of such a statistical measure into a clinically relevant notion has been the focus of research for more than a decade,” the investigators added. “A commonly used interpretation was proposed by Cohen, who suggested that SMDs of 0.2, 0.5, and 0.8 correspond to small, moderate, and large effect sizes, respectively. By using this rule of thumb, our results indicate that physical activity exerts a moderate-to-large impact on the reduction of intrahepatic lipid content.”

Exercise reduced liver fat content even more in pediatric patients (SMD, –0.75; 95% CI, –0.1 to –0.5; P less than .0001) and in patients who had been specifically diagnosed with NAFLD (SMD, –0.86; 95% CI, –1.26 to –0.46; P less than .0001). Patients with the highest baseline body mass index also seemed to benefit more than patients with lower baseline BMI (P = .04). Indeed, exercise reduced BMI itself by a weighted mean difference of 0.8 (95% CI, –1.22 to 0.38; P less than .001), the researchers noted. Exercise intensity did not seem to affect the likelihood of benefit. There was a trend toward a greater effect of aerobic over resistance training (P = .06), and few studies examined the effects of combining both types of exercise.

The multivariable analysis also linked physical activity to an average 3.30 IU/L drop in alanine aminotransferase levels (95% CI, –5.57 to –1.04) and to a 4.9 IU/L decrease in aspartate aminotransferase levels (95% CI, –8.68 to –1.02). The investigators were unable to assess the long-term effects of physical exercise, nor its effects on hepatic fibrosis or inflammation, they noted. Nonetheless, the moderate to large effect size “provides strong evidence for the recommendation of physical activity as an effective intervention in the treatment of NAFLD,” they concluded. “Physical activity is also associated with an improvement in blood levels of aminotransferases and is particularly beneficial in patients presenting with severe obesity at baseline.”

The work was funded by the Ligue Genevoise contre le Cancer and the Dr Henri Dubois-Ferrière/Dinu Lipatti Foundation and by the Swiss National Science Foundation. The investigators had no disclosures.

*Content was updated on 10/25/2016 

 

 

Regular physical exercise significantly improved measures of nonalcoholic fatty liver disease independently of dietary changes, according to a meta-analysis of randomized controlled* trials published in the October issue of Clinical Gastroenterology and Hepatology.

“On the basis of the current findings, physical activity should be recommended not only in combination with dietary changes but also independently as an effective approach to manage NAFLD,” wrote Lorenzo Orci, MD, and his associates at the University of Geneva. “We propose that the level of evidence surrounding the specific role of physical activity in the management of NAFLD is now sufficient to be awarded a grade of Ia.”

 


Nonalcoholic fatty liver disease, “the hepatic manifestation of metabolic syndrome,” affects at least one in four U.S. adults and 15%-35% of individuals in Europe, the Middle East, China, and Japan, the researchers noted. Dietary changes are the cornerstone of NAFLD management, and there is less evidence for how physical exercise affects liver fat content. Therefore, the researchers searched MEDLINE, Embase, and the Cochrane databases from inception through October 2015 to find randomized trials of the impact of physical activity on markers of liver steatosis and liver inflammation in patients diagnosed with NAFLD, obesity, type 2 diabetes, or metabolic syndrome. This approach yielded 28 trials with data from more than 1,600 patients. Only two trials were multicenter, 13 required participants to have an NAFLD diagnosis, four focused on type 2 diabetes, and most of the rest included sedentary obese patients without requiring a diagnosis of NAFLD, the researchers said (Clin Gastroenterol Hepatol. 2016 May 4. doi: 10.1016/j.cgh.2016.04.036).

After researchers accounted for dietary changes, physical activity led to a significant drop in intrahepatic lipid content with a standardized mean difference of –0.69 compared with controls (95% confidence interval, –0.90 to –0.48; P less than .0001). “Because effect sizes such as standard mean difference [SMD] are difficult to interpret, the translation of such a statistical measure into a clinically relevant notion has been the focus of research for more than a decade,” the investigators added. “A commonly used interpretation was proposed by Cohen, who suggested that SMDs of 0.2, 0.5, and 0.8 correspond to small, moderate, and large effect sizes, respectively. By using this rule of thumb, our results indicate that physical activity exerts a moderate-to-large impact on the reduction of intrahepatic lipid content.”

Exercise reduced liver fat content even more in pediatric patients (SMD, –0.75; 95% CI, –0.1 to –0.5; P less than .0001) and in patients who had been specifically diagnosed with NAFLD (SMD, –0.86; 95% CI, –1.26 to –0.46; P less than .0001). Patients with the highest baseline body mass index also seemed to benefit more than patients with lower baseline BMI (P = .04). Indeed, exercise reduced BMI itself by a weighted mean difference of 0.8 (95% CI, –1.22 to 0.38; P less than .001), the researchers noted. Exercise intensity did not seem to affect the likelihood of benefit. There was a trend toward a greater effect of aerobic over resistance training (P = .06), and few studies examined the effects of combining both types of exercise.

The multivariable analysis also linked physical activity to an average 3.30 IU/L drop in alanine aminotransferase levels (95% CI, –5.57 to –1.04) and to a 4.9 IU/L decrease in aspartate aminotransferase levels (95% CI, –8.68 to –1.02). The investigators were unable to assess the long-term effects of physical exercise, nor its effects on hepatic fibrosis or inflammation, they noted. Nonetheless, the moderate to large effect size “provides strong evidence for the recommendation of physical activity as an effective intervention in the treatment of NAFLD,” they concluded. “Physical activity is also associated with an improvement in blood levels of aminotransferases and is particularly beneficial in patients presenting with severe obesity at baseline.”

The work was funded by the Ligue Genevoise contre le Cancer and the Dr Henri Dubois-Ferrière/Dinu Lipatti Foundation and by the Swiss National Science Foundation. The investigators had no disclosures.

*Content was updated on 10/25/2016 

 

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Key clinical point: Physical activity benefits measures of nonalcoholic fatty liver disease independently of diet.

Major finding: After researchers accounted for dietary changes, physical activity led to a significant drop in intrahepatic lipid content with a standardized mean difference of –0.69 compared with controls (95% confidence interval, –0.90 to –0.48; P less than .0001).

Data source: A systematic review and meta-analysis of 28 randomized controlled trials comprising more than 16,000 patients.

Disclosures: The work was funded by the Ligue Genevoise contre le Cancer and the Dr Henri Dubois-Ferrière/Dinu Lipatti Foundation and by the Swiss National Science Foundation. The researchers had no disclosures.

Investigational HCV drug combo yields high SVR12 rates in compensated cirrhosis

The next generation of HCV drugs
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Investigational HCV drug combo yields high SVR12 rates in compensated cirrhosis

A once-daily regimen of two investigational, direct-acting anti-HCV agents, ABT-493 and ABT-530, was well tolerated and achieved sustained viral response at 12 weeks (SVR12) for nearly all patients with compensated cirrhosis and chronic genotype (GT) 1 or 3 hepatitis C virus infection, according to open-label phase II studies.

“The unique potency of these agents against all genotypes, even in the presence of common NS3 and/or NS5A baseline substitutions that confer resistance to most contemporary NS3/4A protease inhibitors and NS5A inhibitors, offers the potential for pangenotypic [HCV] therapy without ribavirin,” Edward J. Gane, MD, of the University of Auckland, New Zealand, and his associates wrote in the October issue of Gastroenterology. Phase III trials are now testing this hypothesis by focusing on cohorts of treatment-experienced, genotype 3–infected patients, on patients with renal impairment, and on patients who failed earlier-generation direct-acting antiviral regimens, they said.

 

Dr. Edward J. Gane

The prevalence of HCV-related cirrhosis has yet to peak, and gold standard therapies for GT3 and GT1a infections can take weeks of treatment and the use of ribavirin, which causes undesirable side effects, the investigators noted. Attempts to surmount these residual barriers led to the development of ABT-493, an HCV nonstructural (NS) protein 3/4A protease inhibitor, and ABT-530, an HCV NS5A inhibitor. During in vitro studies, both agents showed “potent” activity against all major HCV genotypes, including variants with mutations that confer resistance to earlier, direct-acting antivirals, the researchers said (Gastroenterology. 2016 Jul 22. doi: 10.1053/j.gastro.2016.07.020). Their two open-label phase II studies enrolled adults with compensated cirrhosis and chronic GT3 (55 patients) or GT1 (27 patients) infection. Among GT1 patients, 41% had baseline NS3 substitutions conferring resistance to earlier-generation drugs, 19% had NS5A substitutions, and 11% had both mutations. The GT1-infected patients received 200 mg ABT-493 and 120 mg of ABT-530. The GT3-infected patients received 300 mg ABT-493 and 120 mg ABT-530, and half (27 patients) also received ribavirin. Most patients were treatment-naive, male, and white, with Child-Pugh scores of 5 and HCV RNA levels averaging about 6.2-6.6 log10 IU/mL.

In all, 26 patients with GT1 infection (96%) achieved SVR12 (95% confidence interval, 82% to 99%). The remaining patient relapsed after completing treatment. All treatment-naive GT3 patients achieved SVR12 whether or not they received ribavirin. However, one treatment-experienced GT3 patient who did not receive ribavirin relapsed after 16 weeks of treatment. Thus, rates of SVR12 were 96% (95% confidence interval, 82%-99%) for GT3 patients who did not receive ribavirin and 100% (95% CI, 88%-100%) for those who did. Notably, 94% of patients with baseline substitutions in NS3 and NS5A achieved SVR12, and there was no apparent link between treatment failure and any demographic or clinical characteristics, the investigators wrote.

Adverse events affected about 74% of patients and were usually mild or moderate in severity. Patients who did not receive ribavirin were most likely to report headache (15%), diarrhea (13%), and fatigue (11%). Only 4% of GT1 patients and 7% of the GT3 cohorts developed serious adverse events, and the only serious adverse event considered possibly treatment related involved a delusional disorder in a 57-year-old male who was receiving ribavirin and admitted amphetamine and alcohol use on the day it occurred. Treatment-related laboratory abnormalities were uncommon, no patients stopped treatment because of adverse events, and there were no deaths. “The rates of some adverse events were numerically higher with the higher ABT-493 dose, though the sample sizes are small and this was a cross-study comparison,” the investigators added. “Though not included in this study, patients with severe or end-stage kidney disease are predicted to be able to be treated with ABT-493 and ABT-530 because both agents have negligible renal excretion. These drugs were well tolerated in HCV-uninfected patients with renal impairment and can be administered without dose adjustment.”AbbVie funded the study and makes ABT-493 and ABT-530. Dr. Gane disclosed ties to AbbVie, Achillion Pharmaceuticals, Alnylam, Janssen, Merck, Novartis, and Novira.

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In phase II and III clinical trials of direct-acting antivirals (DAAs), sustained viral response (SVR) rates over 90% were achieved in most patient groups and the combinations were well tolerated, results confirmed in real-world studies. However, a number of patients remain “difficult to cure.” Among them, patients infected with genotype 3, especially those with advanced liver disease, do not respond as well as patients infected with other genotypes and often need ribavirin. 
In this study, a combination of two “next- generation” drugs with potent pangenotypic antiviral activity and a high barrier to resistance was administered to patients infected with HCV genotype 1 or 3 with compensated cirrhosis. Overall, 96% of patients infected with geno­type 1 and 98% of patients infected with genotype 3 achieved SVR, with no apparent effect of ribavirin. The combination was well tolerated. Pending confirmation in phase III trials, these results suggest that pangenotypic combination regimens will be available in the very near future (approval expected in 2017) and that genotype 3 will become as easy to cure as other genotypes, while less ribavirin will be used. Unfortunately, patients with decompensated cirrhosis will not benefit from these advances, as protease inhibitors such as ABT-493 cannot be used in this population. This pangenotypic regimen may also prove particularly useful in patients with severe or end-stage kidney disease who should not receive the nucleotide analogue sofosbuvir. High SVR rates appear to be achievable when retreating patients who failed a prior DAA-based treatment with this combination, but relapses may still occur with highly resistant viruses. This next generation of HCV drugs will be the last generation. With this armamentarium, it will be technically possible to cure the vast majority of HCV-infected patients. Thus, screening and diagnosing HCV-infected patients are now mandatory in order to provide them with efficient care and make the world almost free of hepatitis C by 2030.

Jean-Michel Pawlotsky, MD, PhD, director of the National Reference Center for Viral Hepatitis B, C, and D, and professor of medicine in the department of virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France. He has received research grants from Gilead and Abbvie and has served as an adviser for Abbvie, Bristol-Myers Squibb, Gilead, Janssen, and Merck.

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In phase II and III clinical trials of direct-acting antivirals (DAAs), sustained viral response (SVR) rates over 90% were achieved in most patient groups and the combinations were well tolerated, results confirmed in real-world studies. However, a number of patients remain “difficult to cure.” Among them, patients infected with genotype 3, especially those with advanced liver disease, do not respond as well as patients infected with other genotypes and often need ribavirin. 
In this study, a combination of two “next- generation” drugs with potent pangenotypic antiviral activity and a high barrier to resistance was administered to patients infected with HCV genotype 1 or 3 with compensated cirrhosis. Overall, 96% of patients infected with geno­type 1 and 98% of patients infected with genotype 3 achieved SVR, with no apparent effect of ribavirin. The combination was well tolerated. Pending confirmation in phase III trials, these results suggest that pangenotypic combination regimens will be available in the very near future (approval expected in 2017) and that genotype 3 will become as easy to cure as other genotypes, while less ribavirin will be used. Unfortunately, patients with decompensated cirrhosis will not benefit from these advances, as protease inhibitors such as ABT-493 cannot be used in this population. This pangenotypic regimen may also prove particularly useful in patients with severe or end-stage kidney disease who should not receive the nucleotide analogue sofosbuvir. High SVR rates appear to be achievable when retreating patients who failed a prior DAA-based treatment with this combination, but relapses may still occur with highly resistant viruses. This next generation of HCV drugs will be the last generation. With this armamentarium, it will be technically possible to cure the vast majority of HCV-infected patients. Thus, screening and diagnosing HCV-infected patients are now mandatory in order to provide them with efficient care and make the world almost free of hepatitis C by 2030.

Jean-Michel Pawlotsky, MD, PhD, director of the National Reference Center for Viral Hepatitis B, C, and D, and professor of medicine in the department of virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France. He has received research grants from Gilead and Abbvie and has served as an adviser for Abbvie, Bristol-Myers Squibb, Gilead, Janssen, and Merck.

Body

In phase II and III clinical trials of direct-acting antivirals (DAAs), sustained viral response (SVR) rates over 90% were achieved in most patient groups and the combinations were well tolerated, results confirmed in real-world studies. However, a number of patients remain “difficult to cure.” Among them, patients infected with genotype 3, especially those with advanced liver disease, do not respond as well as patients infected with other genotypes and often need ribavirin. 
In this study, a combination of two “next- generation” drugs with potent pangenotypic antiviral activity and a high barrier to resistance was administered to patients infected with HCV genotype 1 or 3 with compensated cirrhosis. Overall, 96% of patients infected with geno­type 1 and 98% of patients infected with genotype 3 achieved SVR, with no apparent effect of ribavirin. The combination was well tolerated. Pending confirmation in phase III trials, these results suggest that pangenotypic combination regimens will be available in the very near future (approval expected in 2017) and that genotype 3 will become as easy to cure as other genotypes, while less ribavirin will be used. Unfortunately, patients with decompensated cirrhosis will not benefit from these advances, as protease inhibitors such as ABT-493 cannot be used in this population. This pangenotypic regimen may also prove particularly useful in patients with severe or end-stage kidney disease who should not receive the nucleotide analogue sofosbuvir. High SVR rates appear to be achievable when retreating patients who failed a prior DAA-based treatment with this combination, but relapses may still occur with highly resistant viruses. This next generation of HCV drugs will be the last generation. With this armamentarium, it will be technically possible to cure the vast majority of HCV-infected patients. Thus, screening and diagnosing HCV-infected patients are now mandatory in order to provide them with efficient care and make the world almost free of hepatitis C by 2030.

Jean-Michel Pawlotsky, MD, PhD, director of the National Reference Center for Viral Hepatitis B, C, and D, and professor of medicine in the department of virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France. He has received research grants from Gilead and Abbvie and has served as an adviser for Abbvie, Bristol-Myers Squibb, Gilead, Janssen, and Merck.

Title
The next generation of HCV drugs
The next generation of HCV drugs

A once-daily regimen of two investigational, direct-acting anti-HCV agents, ABT-493 and ABT-530, was well tolerated and achieved sustained viral response at 12 weeks (SVR12) for nearly all patients with compensated cirrhosis and chronic genotype (GT) 1 or 3 hepatitis C virus infection, according to open-label phase II studies.

“The unique potency of these agents against all genotypes, even in the presence of common NS3 and/or NS5A baseline substitutions that confer resistance to most contemporary NS3/4A protease inhibitors and NS5A inhibitors, offers the potential for pangenotypic [HCV] therapy without ribavirin,” Edward J. Gane, MD, of the University of Auckland, New Zealand, and his associates wrote in the October issue of Gastroenterology. Phase III trials are now testing this hypothesis by focusing on cohorts of treatment-experienced, genotype 3–infected patients, on patients with renal impairment, and on patients who failed earlier-generation direct-acting antiviral regimens, they said.

 

Dr. Edward J. Gane

The prevalence of HCV-related cirrhosis has yet to peak, and gold standard therapies for GT3 and GT1a infections can take weeks of treatment and the use of ribavirin, which causes undesirable side effects, the investigators noted. Attempts to surmount these residual barriers led to the development of ABT-493, an HCV nonstructural (NS) protein 3/4A protease inhibitor, and ABT-530, an HCV NS5A inhibitor. During in vitro studies, both agents showed “potent” activity against all major HCV genotypes, including variants with mutations that confer resistance to earlier, direct-acting antivirals, the researchers said (Gastroenterology. 2016 Jul 22. doi: 10.1053/j.gastro.2016.07.020). Their two open-label phase II studies enrolled adults with compensated cirrhosis and chronic GT3 (55 patients) or GT1 (27 patients) infection. Among GT1 patients, 41% had baseline NS3 substitutions conferring resistance to earlier-generation drugs, 19% had NS5A substitutions, and 11% had both mutations. The GT1-infected patients received 200 mg ABT-493 and 120 mg of ABT-530. The GT3-infected patients received 300 mg ABT-493 and 120 mg ABT-530, and half (27 patients) also received ribavirin. Most patients were treatment-naive, male, and white, with Child-Pugh scores of 5 and HCV RNA levels averaging about 6.2-6.6 log10 IU/mL.

In all, 26 patients with GT1 infection (96%) achieved SVR12 (95% confidence interval, 82% to 99%). The remaining patient relapsed after completing treatment. All treatment-naive GT3 patients achieved SVR12 whether or not they received ribavirin. However, one treatment-experienced GT3 patient who did not receive ribavirin relapsed after 16 weeks of treatment. Thus, rates of SVR12 were 96% (95% confidence interval, 82%-99%) for GT3 patients who did not receive ribavirin and 100% (95% CI, 88%-100%) for those who did. Notably, 94% of patients with baseline substitutions in NS3 and NS5A achieved SVR12, and there was no apparent link between treatment failure and any demographic or clinical characteristics, the investigators wrote.

Adverse events affected about 74% of patients and were usually mild or moderate in severity. Patients who did not receive ribavirin were most likely to report headache (15%), diarrhea (13%), and fatigue (11%). Only 4% of GT1 patients and 7% of the GT3 cohorts developed serious adverse events, and the only serious adverse event considered possibly treatment related involved a delusional disorder in a 57-year-old male who was receiving ribavirin and admitted amphetamine and alcohol use on the day it occurred. Treatment-related laboratory abnormalities were uncommon, no patients stopped treatment because of adverse events, and there were no deaths. “The rates of some adverse events were numerically higher with the higher ABT-493 dose, though the sample sizes are small and this was a cross-study comparison,” the investigators added. “Though not included in this study, patients with severe or end-stage kidney disease are predicted to be able to be treated with ABT-493 and ABT-530 because both agents have negligible renal excretion. These drugs were well tolerated in HCV-uninfected patients with renal impairment and can be administered without dose adjustment.”AbbVie funded the study and makes ABT-493 and ABT-530. Dr. Gane disclosed ties to AbbVie, Achillion Pharmaceuticals, Alnylam, Janssen, Merck, Novartis, and Novira.

A once-daily regimen of two investigational, direct-acting anti-HCV agents, ABT-493 and ABT-530, was well tolerated and achieved sustained viral response at 12 weeks (SVR12) for nearly all patients with compensated cirrhosis and chronic genotype (GT) 1 or 3 hepatitis C virus infection, according to open-label phase II studies.

“The unique potency of these agents against all genotypes, even in the presence of common NS3 and/or NS5A baseline substitutions that confer resistance to most contemporary NS3/4A protease inhibitors and NS5A inhibitors, offers the potential for pangenotypic [HCV] therapy without ribavirin,” Edward J. Gane, MD, of the University of Auckland, New Zealand, and his associates wrote in the October issue of Gastroenterology. Phase III trials are now testing this hypothesis by focusing on cohorts of treatment-experienced, genotype 3–infected patients, on patients with renal impairment, and on patients who failed earlier-generation direct-acting antiviral regimens, they said.

 

Dr. Edward J. Gane

The prevalence of HCV-related cirrhosis has yet to peak, and gold standard therapies for GT3 and GT1a infections can take weeks of treatment and the use of ribavirin, which causes undesirable side effects, the investigators noted. Attempts to surmount these residual barriers led to the development of ABT-493, an HCV nonstructural (NS) protein 3/4A protease inhibitor, and ABT-530, an HCV NS5A inhibitor. During in vitro studies, both agents showed “potent” activity against all major HCV genotypes, including variants with mutations that confer resistance to earlier, direct-acting antivirals, the researchers said (Gastroenterology. 2016 Jul 22. doi: 10.1053/j.gastro.2016.07.020). Their two open-label phase II studies enrolled adults with compensated cirrhosis and chronic GT3 (55 patients) or GT1 (27 patients) infection. Among GT1 patients, 41% had baseline NS3 substitutions conferring resistance to earlier-generation drugs, 19% had NS5A substitutions, and 11% had both mutations. The GT1-infected patients received 200 mg ABT-493 and 120 mg of ABT-530. The GT3-infected patients received 300 mg ABT-493 and 120 mg ABT-530, and half (27 patients) also received ribavirin. Most patients were treatment-naive, male, and white, with Child-Pugh scores of 5 and HCV RNA levels averaging about 6.2-6.6 log10 IU/mL.

In all, 26 patients with GT1 infection (96%) achieved SVR12 (95% confidence interval, 82% to 99%). The remaining patient relapsed after completing treatment. All treatment-naive GT3 patients achieved SVR12 whether or not they received ribavirin. However, one treatment-experienced GT3 patient who did not receive ribavirin relapsed after 16 weeks of treatment. Thus, rates of SVR12 were 96% (95% confidence interval, 82%-99%) for GT3 patients who did not receive ribavirin and 100% (95% CI, 88%-100%) for those who did. Notably, 94% of patients with baseline substitutions in NS3 and NS5A achieved SVR12, and there was no apparent link between treatment failure and any demographic or clinical characteristics, the investigators wrote.

Adverse events affected about 74% of patients and were usually mild or moderate in severity. Patients who did not receive ribavirin were most likely to report headache (15%), diarrhea (13%), and fatigue (11%). Only 4% of GT1 patients and 7% of the GT3 cohorts developed serious adverse events, and the only serious adverse event considered possibly treatment related involved a delusional disorder in a 57-year-old male who was receiving ribavirin and admitted amphetamine and alcohol use on the day it occurred. Treatment-related laboratory abnormalities were uncommon, no patients stopped treatment because of adverse events, and there were no deaths. “The rates of some adverse events were numerically higher with the higher ABT-493 dose, though the sample sizes are small and this was a cross-study comparison,” the investigators added. “Though not included in this study, patients with severe or end-stage kidney disease are predicted to be able to be treated with ABT-493 and ABT-530 because both agents have negligible renal excretion. These drugs were well tolerated in HCV-uninfected patients with renal impairment and can be administered without dose adjustment.”AbbVie funded the study and makes ABT-493 and ABT-530. Dr. Gane disclosed ties to AbbVie, Achillion Pharmaceuticals, Alnylam, Janssen, Merck, Novartis, and Novira.

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Key Clinical Point: The ABT-493/ABT-530 investigational direct-acting antiviral combination cured nearly all patients with compensated cirrhosis and genotype 1 or 3 hepatitis C virus infection.

Major finding: Rates of sustained viral response at 12 weeks (SVR12) were 96% for genotype 1–infected patients; 96% for genotype 3, ribavirin-free patients; and 100% for genotype 3 patients who received ribavirin.

Data source: Two open-label phase II trials of 27 GT1 patients and 55 GT3 patients in compensated cirrhosis.

Disclosures: AbbVie makes these agents and funded the study. Dr. Gane disclosed ties to AbbVie, Achillion Pharmaceuticals, Alnylam, Janssen, Merck, Novartis, and Novira.

Targeted HCV patients improve on sofosbuvir/daclatasvir combination

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A combination of sofosbuvir/daclatasvir yielded sustained virological responses at 12 weeks after the last treatment in 95% of hepatitis C virus–infected patients with genotype 1.

“Real-life results of the sofosbuvir + ribavirin or sofosbuvir + simeprevir combination have been extensively reported, but there are few data regarding the sofosbuvir + daclatasvir combination in genotype 1–infected patients,” wrote Stanislas Pol, MD, of Hôpital Cochin, Institut Pasteur, Paris, and his colleagues.

To assess the effectiveness of the combination, researchers reviewed data from 768 patients with HCV genotype 1 who began treatments of 400 mg/day sofosbuvir and 60 mg/day daclatasvir prior to Oct. 1, 2014 (J Hepatol. 2016. doi: 10.1016/j.jhep.2016.08.021). Patients were treated for 12 or 24 weeks, and the primary endpoint was sustained virological response 12 weeks after the last treatment (SVR12).

A total of 92% of patients treated for 12 weeks and 99% of patients treated for 24 weeks with the combination met the primary endpoint of SVR12, for an average of 95% overall. Treatment duration and the presence or absence of ribavirin had no significant impact on the treatment responses in noncirrhotic patients. However, the SVR12 rate was significantly higher among cirrhotic patients in the 24-week treatment group than in the 12-week group (95% vs. 88%).

One patient died from cerebral hemorrhage 6 weeks after beginning treatment, and the death was considered possibly related to the combination treatment; two deaths from septic shock and two deaths from end-stage liver disease were not considered treatment related. Other serious adverse events were reported in 10% of patients independent of treatment duration or use of ribavirin. The six serious adverse events possibly related to treatment included three cardiac disorders. The most common adverse events included insomnia, headache, and asthenia, reported in at least 10% of patients.

Only decompensated cirrhosis and a prothrombin time greater than 70% were independently associated with serious adverse events.

The study was limited by several factors, including its observational nature and relatively low number of patients treated with ribavirin in the 12-week group, the researchers noted. However, the results suggest that “in real life, the sofosbuvir + daclatasvir combination in difficult-to-treat patients with HCV genotype 1 infection was associated with a high rate of SVR12,” they said.

Inserm-ANRS supported the study. The researchers disclosed funding from government organizations and pharmaceutical companies including MSD, Janssen, Gilead, AbbVie, BMS, and Roche.

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A combination of sofosbuvir/daclatasvir yielded sustained virological responses at 12 weeks after the last treatment in 95% of hepatitis C virus–infected patients with genotype 1.

“Real-life results of the sofosbuvir + ribavirin or sofosbuvir + simeprevir combination have been extensively reported, but there are few data regarding the sofosbuvir + daclatasvir combination in genotype 1–infected patients,” wrote Stanislas Pol, MD, of Hôpital Cochin, Institut Pasteur, Paris, and his colleagues.

To assess the effectiveness of the combination, researchers reviewed data from 768 patients with HCV genotype 1 who began treatments of 400 mg/day sofosbuvir and 60 mg/day daclatasvir prior to Oct. 1, 2014 (J Hepatol. 2016. doi: 10.1016/j.jhep.2016.08.021). Patients were treated for 12 or 24 weeks, and the primary endpoint was sustained virological response 12 weeks after the last treatment (SVR12).

A total of 92% of patients treated for 12 weeks and 99% of patients treated for 24 weeks with the combination met the primary endpoint of SVR12, for an average of 95% overall. Treatment duration and the presence or absence of ribavirin had no significant impact on the treatment responses in noncirrhotic patients. However, the SVR12 rate was significantly higher among cirrhotic patients in the 24-week treatment group than in the 12-week group (95% vs. 88%).

One patient died from cerebral hemorrhage 6 weeks after beginning treatment, and the death was considered possibly related to the combination treatment; two deaths from septic shock and two deaths from end-stage liver disease were not considered treatment related. Other serious adverse events were reported in 10% of patients independent of treatment duration or use of ribavirin. The six serious adverse events possibly related to treatment included three cardiac disorders. The most common adverse events included insomnia, headache, and asthenia, reported in at least 10% of patients.

Only decompensated cirrhosis and a prothrombin time greater than 70% were independently associated with serious adverse events.

The study was limited by several factors, including its observational nature and relatively low number of patients treated with ribavirin in the 12-week group, the researchers noted. However, the results suggest that “in real life, the sofosbuvir + daclatasvir combination in difficult-to-treat patients with HCV genotype 1 infection was associated with a high rate of SVR12,” they said.

Inserm-ANRS supported the study. The researchers disclosed funding from government organizations and pharmaceutical companies including MSD, Janssen, Gilead, AbbVie, BMS, and Roche.

A combination of sofosbuvir/daclatasvir yielded sustained virological responses at 12 weeks after the last treatment in 95% of hepatitis C virus–infected patients with genotype 1.

“Real-life results of the sofosbuvir + ribavirin or sofosbuvir + simeprevir combination have been extensively reported, but there are few data regarding the sofosbuvir + daclatasvir combination in genotype 1–infected patients,” wrote Stanislas Pol, MD, of Hôpital Cochin, Institut Pasteur, Paris, and his colleagues.

To assess the effectiveness of the combination, researchers reviewed data from 768 patients with HCV genotype 1 who began treatments of 400 mg/day sofosbuvir and 60 mg/day daclatasvir prior to Oct. 1, 2014 (J Hepatol. 2016. doi: 10.1016/j.jhep.2016.08.021). Patients were treated for 12 or 24 weeks, and the primary endpoint was sustained virological response 12 weeks after the last treatment (SVR12).

A total of 92% of patients treated for 12 weeks and 99% of patients treated for 24 weeks with the combination met the primary endpoint of SVR12, for an average of 95% overall. Treatment duration and the presence or absence of ribavirin had no significant impact on the treatment responses in noncirrhotic patients. However, the SVR12 rate was significantly higher among cirrhotic patients in the 24-week treatment group than in the 12-week group (95% vs. 88%).

One patient died from cerebral hemorrhage 6 weeks after beginning treatment, and the death was considered possibly related to the combination treatment; two deaths from septic shock and two deaths from end-stage liver disease were not considered treatment related. Other serious adverse events were reported in 10% of patients independent of treatment duration or use of ribavirin. The six serious adverse events possibly related to treatment included three cardiac disorders. The most common adverse events included insomnia, headache, and asthenia, reported in at least 10% of patients.

Only decompensated cirrhosis and a prothrombin time greater than 70% were independently associated with serious adverse events.

The study was limited by several factors, including its observational nature and relatively low number of patients treated with ribavirin in the 12-week group, the researchers noted. However, the results suggest that “in real life, the sofosbuvir + daclatasvir combination in difficult-to-treat patients with HCV genotype 1 infection was associated with a high rate of SVR12,” they said.

Inserm-ANRS supported the study. The researchers disclosed funding from government organizations and pharmaceutical companies including MSD, Janssen, Gilead, AbbVie, BMS, and Roche.

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Key clinical point: A sofosbuvir/daclatasvir combination was effective in most patients with HCV genotype 1, independent of an addition of ribavirin.

Major finding: Sustained virological response at 12 weeks after the last treatment occurred in 95% of patients treated with a combination of sofosbuvir and daclatasvir.

Data source: A selection of 768 patients with a HCV genotype 1 who were part of a ongoing multicenter, observational cohort study.

Disclosures: Inserm-ANRS supported the study. The researchers disclosed funding from government organizations and pharmaceutical companies including MSD, Janssen, Gilead, AbbVie, BMS, and Roche.

FDA gives orphan drug designation to BIV201 for ascites treatment

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The Food and Drug Administration has given an orphan drug designation to the compound BIV201 for the treatment of ascites, according to a press release from the drug’s manufacturer, BioVie.

The FDA designation for BIV201 is for the treatment of ascites due to all etiologies except cancer. Clinical trials could commence by 2017, if accepted by the FDA. If trials are successful, other applications for BIV201 could be tested. BIV201 is a vasoconstricter, and could also be used to treat diseases like type 1 hepatorenal syndrome, esophageal variceal bleeds, and sepsis.

 

Ascites, a common complication of liver cirrhosis, has no specific approved treatment, and 40% of patients diagnosed with ascites die within 2 years. Other treatments may work initially, but become ineffective as the patient worsens. Treatment costs in the United States for liver cirrhosis and related complications, including ascites, totals over $4 billion.

“Orphan drug designation represents a major milestone supporting the clinical development and eventual commercialization of BIV201 therapy. It recognizes the importance of pioneering a new therapeutic approach for this relatively small group of desperately ill patients,” Jonathan Adams, BioVie CEO, said in the press release.

Find the full press release on the BioVie website.

lfranki@frontlinemedcom.com

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The Food and Drug Administration has given an orphan drug designation to the compound BIV201 for the treatment of ascites, according to a press release from the drug’s manufacturer, BioVie.

The FDA designation for BIV201 is for the treatment of ascites due to all etiologies except cancer. Clinical trials could commence by 2017, if accepted by the FDA. If trials are successful, other applications for BIV201 could be tested. BIV201 is a vasoconstricter, and could also be used to treat diseases like type 1 hepatorenal syndrome, esophageal variceal bleeds, and sepsis.

 

Ascites, a common complication of liver cirrhosis, has no specific approved treatment, and 40% of patients diagnosed with ascites die within 2 years. Other treatments may work initially, but become ineffective as the patient worsens. Treatment costs in the United States for liver cirrhosis and related complications, including ascites, totals over $4 billion.

“Orphan drug designation represents a major milestone supporting the clinical development and eventual commercialization of BIV201 therapy. It recognizes the importance of pioneering a new therapeutic approach for this relatively small group of desperately ill patients,” Jonathan Adams, BioVie CEO, said in the press release.

Find the full press release on the BioVie website.

lfranki@frontlinemedcom.com

The Food and Drug Administration has given an orphan drug designation to the compound BIV201 for the treatment of ascites, according to a press release from the drug’s manufacturer, BioVie.

The FDA designation for BIV201 is for the treatment of ascites due to all etiologies except cancer. Clinical trials could commence by 2017, if accepted by the FDA. If trials are successful, other applications for BIV201 could be tested. BIV201 is a vasoconstricter, and could also be used to treat diseases like type 1 hepatorenal syndrome, esophageal variceal bleeds, and sepsis.

 

Ascites, a common complication of liver cirrhosis, has no specific approved treatment, and 40% of patients diagnosed with ascites die within 2 years. Other treatments may work initially, but become ineffective as the patient worsens. Treatment costs in the United States for liver cirrhosis and related complications, including ascites, totals over $4 billion.

“Orphan drug designation represents a major milestone supporting the clinical development and eventual commercialization of BIV201 therapy. It recognizes the importance of pioneering a new therapeutic approach for this relatively small group of desperately ill patients,” Jonathan Adams, BioVie CEO, said in the press release.

Find the full press release on the BioVie website.

lfranki@frontlinemedcom.com

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New ELISA better differentiates chronic, acute hepatitis E infection

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New ELISA better differentiates chronic, acute hepatitis E infection

While real-time polymerase chain reaction (PCR) testing is the standard test for hepatitis E virus infection, an anti-HEV-specific enzyme-linked immunosorbent assay (ELISA) is more effective than is PCR at distinguishing between acute and chronic HEV infections.

“A clinical challenge in the management of immunocompromised patients with HEV infection is to differentiate between the acute and chronic course of infection [as] approximately 60% of infected immunocompromised individuals experience a chronic infection, which might require treatment with ribavirin,” said lead author Patrick Behrendt, Dr.med., of Hannover (Germany) Medical School.

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Electron micrograph of Hepatitis E viruses (HEV).

The anti-HEV antigen (Ag) ELISA has recently become commercially available, making it an even bigger matter of interest. Dr. Behrendt and his coinvestigators analyzed sera from 18 patients with acute and 21 patients with chronic HEV, whose samples were collected between 2008 and 2015. The sera were retrospectively analyzed via both real-time PCR and ELISA to compare the efficacy of each in identifying HEV – more specifically, HEV genotype 3 – in each subject. For the ELISA analysis, 100 mcL of serum were added to each well of an ELISA plate, which was subsequently incubated at 37 degrees Celsius for 1 hour.

The researchers analyzed sera from four individuals with chronic HEV using serial dilutions to compare sensitivity of real-time PCR and ELISA. In three out of those four sera (75%), ELISA showed negative results due to HEV RNA levels of fewer than 10,000 copies/mL; on the other hand, real-time PCR showed a “linear reduction in levels,” indicating that it is the better option in detecting HEV genotype 3 (J Infect Dis. 2016 May 27;214[3]:361-8).

ELISA was also used on 20 chronic HEV patients and 17 acute HEV patients to determine its sensitivity at distinguishing between the two types of infection. In this cohort, only 64.7% of RNA-positive patients were deemed positive according to the ELISA testing, while ELISA results were positive in all of the cases of chronic HEV infections. None of the patients with chronic infection registered a false-negative, which indicates “a high reliability of the assay for this cohort,” according to the investigators.

“Comparison of chronically infected individuals with acutely infected patients revealed drastically increased ODs in chronically infected patients, while most of the positive samples from acutely infected patients displayed significantly lower values [which] led to a sensitivity of 100% (20 of 20) [ELISA] results for chronically HEV infected individuals,” the authors concluded. “Our study demonstrates that [ELISA] has a sensitivity of 65% and a specificity of 92% in detecting an ongoing HEV infection in a real-life cohort.”

The German Center for Infection Research, the Helmholtz Center for Infection Research, and the German Ministry for Education and Research funded the study. The researchers reported no relevant financial disclosures.

dchitnis@frontlinemedcom.com

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While real-time polymerase chain reaction (PCR) testing is the standard test for hepatitis E virus infection, an anti-HEV-specific enzyme-linked immunosorbent assay (ELISA) is more effective than is PCR at distinguishing between acute and chronic HEV infections.

“A clinical challenge in the management of immunocompromised patients with HEV infection is to differentiate between the acute and chronic course of infection [as] approximately 60% of infected immunocompromised individuals experience a chronic infection, which might require treatment with ribavirin,” said lead author Patrick Behrendt, Dr.med., of Hannover (Germany) Medical School.

CDC/Wikimedia Commons/Public Domain
Electron micrograph of Hepatitis E viruses (HEV).

The anti-HEV antigen (Ag) ELISA has recently become commercially available, making it an even bigger matter of interest. Dr. Behrendt and his coinvestigators analyzed sera from 18 patients with acute and 21 patients with chronic HEV, whose samples were collected between 2008 and 2015. The sera were retrospectively analyzed via both real-time PCR and ELISA to compare the efficacy of each in identifying HEV – more specifically, HEV genotype 3 – in each subject. For the ELISA analysis, 100 mcL of serum were added to each well of an ELISA plate, which was subsequently incubated at 37 degrees Celsius for 1 hour.

The researchers analyzed sera from four individuals with chronic HEV using serial dilutions to compare sensitivity of real-time PCR and ELISA. In three out of those four sera (75%), ELISA showed negative results due to HEV RNA levels of fewer than 10,000 copies/mL; on the other hand, real-time PCR showed a “linear reduction in levels,” indicating that it is the better option in detecting HEV genotype 3 (J Infect Dis. 2016 May 27;214[3]:361-8).

ELISA was also used on 20 chronic HEV patients and 17 acute HEV patients to determine its sensitivity at distinguishing between the two types of infection. In this cohort, only 64.7% of RNA-positive patients were deemed positive according to the ELISA testing, while ELISA results were positive in all of the cases of chronic HEV infections. None of the patients with chronic infection registered a false-negative, which indicates “a high reliability of the assay for this cohort,” according to the investigators.

“Comparison of chronically infected individuals with acutely infected patients revealed drastically increased ODs in chronically infected patients, while most of the positive samples from acutely infected patients displayed significantly lower values [which] led to a sensitivity of 100% (20 of 20) [ELISA] results for chronically HEV infected individuals,” the authors concluded. “Our study demonstrates that [ELISA] has a sensitivity of 65% and a specificity of 92% in detecting an ongoing HEV infection in a real-life cohort.”

The German Center for Infection Research, the Helmholtz Center for Infection Research, and the German Ministry for Education and Research funded the study. The researchers reported no relevant financial disclosures.

dchitnis@frontlinemedcom.com

While real-time polymerase chain reaction (PCR) testing is the standard test for hepatitis E virus infection, an anti-HEV-specific enzyme-linked immunosorbent assay (ELISA) is more effective than is PCR at distinguishing between acute and chronic HEV infections.

“A clinical challenge in the management of immunocompromised patients with HEV infection is to differentiate between the acute and chronic course of infection [as] approximately 60% of infected immunocompromised individuals experience a chronic infection, which might require treatment with ribavirin,” said lead author Patrick Behrendt, Dr.med., of Hannover (Germany) Medical School.

CDC/Wikimedia Commons/Public Domain
Electron micrograph of Hepatitis E viruses (HEV).

The anti-HEV antigen (Ag) ELISA has recently become commercially available, making it an even bigger matter of interest. Dr. Behrendt and his coinvestigators analyzed sera from 18 patients with acute and 21 patients with chronic HEV, whose samples were collected between 2008 and 2015. The sera were retrospectively analyzed via both real-time PCR and ELISA to compare the efficacy of each in identifying HEV – more specifically, HEV genotype 3 – in each subject. For the ELISA analysis, 100 mcL of serum were added to each well of an ELISA plate, which was subsequently incubated at 37 degrees Celsius for 1 hour.

The researchers analyzed sera from four individuals with chronic HEV using serial dilutions to compare sensitivity of real-time PCR and ELISA. In three out of those four sera (75%), ELISA showed negative results due to HEV RNA levels of fewer than 10,000 copies/mL; on the other hand, real-time PCR showed a “linear reduction in levels,” indicating that it is the better option in detecting HEV genotype 3 (J Infect Dis. 2016 May 27;214[3]:361-8).

ELISA was also used on 20 chronic HEV patients and 17 acute HEV patients to determine its sensitivity at distinguishing between the two types of infection. In this cohort, only 64.7% of RNA-positive patients were deemed positive according to the ELISA testing, while ELISA results were positive in all of the cases of chronic HEV infections. None of the patients with chronic infection registered a false-negative, which indicates “a high reliability of the assay for this cohort,” according to the investigators.

“Comparison of chronically infected individuals with acutely infected patients revealed drastically increased ODs in chronically infected patients, while most of the positive samples from acutely infected patients displayed significantly lower values [which] led to a sensitivity of 100% (20 of 20) [ELISA] results for chronically HEV infected individuals,” the authors concluded. “Our study demonstrates that [ELISA] has a sensitivity of 65% and a specificity of 92% in detecting an ongoing HEV infection in a real-life cohort.”

The German Center for Infection Research, the Helmholtz Center for Infection Research, and the German Ministry for Education and Research funded the study. The researchers reported no relevant financial disclosures.

dchitnis@frontlinemedcom.com

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Key clinical point: An anti-HEV-specific enzyme-linked immunosorbent assay (ELISA) is more effective at identifying acute versus chronic HEV infection than is HEV RNA real-time PCR.

Major finding: ELISA detected significantly higher levels of HEV Ag in chronically infected subjects than in acutely affected ones, but was less sensitive at detecting HEV infection overall than real-time PCR.

Data source: Retrospective cohort study of 21 chronic and 18 acute HEV patients from 2008-2015.

Disclosures: The German Center for Infection Research, the Helmholtz Center for Infection Research, and the German Ministry for Education and Research funded the study. The researchers reported no relevant financial disclosures.

New biomarkers, standardization of AMA testing will improve PBC diagnosis

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Standardization of liver diagnostic serology and clinical governance will improve understanding and diagnosis of primary biliary cholangitis (PBC), as will new biomarkers, according to a literature review from Nikolaos Gatselis, MD, PhD, and George Dalekos, MD, PhD, of the University of Thessaly, Greece.

Antimitochondrial antibodies are the most important diagnostic tool for the diagnosis of PBC, as AMA is seen in 90%-95% of patients with PBC. Indirect immunofluorescence assays using HEp-2 cells or cryostat sections of rat liver, kidney, and stomach remain the best way to detect AMA, but since the indirect immunofluorescence process cannot be fully automated, further analysis can be performed by immunoblotting. PBC-specific antinuclear antibodies are seen in 50%-70% of PBC cases, and are also important for the diagnosis of PBC.

 

©GunarsB/Thinkstock

Several new biomarkers have been proposed for improved diagnosis of PBC in recent years. The biomarkers include the autoantibodies KLHL12 and HK1, genetic markers in HLA regions, metabolomic profiling, miRNAs, and epigenetics.

“Development of clinical governance is of great importance in order to ensure that clinical standards are met, and that processes are in place to ensure continuing improvement and harmonization between laboratories. The guidance should include the whole testing process, beginning from the formulation of a reasonable clinical suspicion and the request of the most appropriate autoantibody test and continuing with handling of biological samples,” the investigators said.

Find the full review in Expert Review of Molecular Diagnostics (doi: 10.1080/14737159.2016.1217159).

lfranki@frontlinemedcom.com

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Standardization of liver diagnostic serology and clinical governance will improve understanding and diagnosis of primary biliary cholangitis (PBC), as will new biomarkers, according to a literature review from Nikolaos Gatselis, MD, PhD, and George Dalekos, MD, PhD, of the University of Thessaly, Greece.

Antimitochondrial antibodies are the most important diagnostic tool for the diagnosis of PBC, as AMA is seen in 90%-95% of patients with PBC. Indirect immunofluorescence assays using HEp-2 cells or cryostat sections of rat liver, kidney, and stomach remain the best way to detect AMA, but since the indirect immunofluorescence process cannot be fully automated, further analysis can be performed by immunoblotting. PBC-specific antinuclear antibodies are seen in 50%-70% of PBC cases, and are also important for the diagnosis of PBC.

 

©GunarsB/Thinkstock

Several new biomarkers have been proposed for improved diagnosis of PBC in recent years. The biomarkers include the autoantibodies KLHL12 and HK1, genetic markers in HLA regions, metabolomic profiling, miRNAs, and epigenetics.

“Development of clinical governance is of great importance in order to ensure that clinical standards are met, and that processes are in place to ensure continuing improvement and harmonization between laboratories. The guidance should include the whole testing process, beginning from the formulation of a reasonable clinical suspicion and the request of the most appropriate autoantibody test and continuing with handling of biological samples,” the investigators said.

Find the full review in Expert Review of Molecular Diagnostics (doi: 10.1080/14737159.2016.1217159).

lfranki@frontlinemedcom.com

Standardization of liver diagnostic serology and clinical governance will improve understanding and diagnosis of primary biliary cholangitis (PBC), as will new biomarkers, according to a literature review from Nikolaos Gatselis, MD, PhD, and George Dalekos, MD, PhD, of the University of Thessaly, Greece.

Antimitochondrial antibodies are the most important diagnostic tool for the diagnosis of PBC, as AMA is seen in 90%-95% of patients with PBC. Indirect immunofluorescence assays using HEp-2 cells or cryostat sections of rat liver, kidney, and stomach remain the best way to detect AMA, but since the indirect immunofluorescence process cannot be fully automated, further analysis can be performed by immunoblotting. PBC-specific antinuclear antibodies are seen in 50%-70% of PBC cases, and are also important for the diagnosis of PBC.

 

©GunarsB/Thinkstock

Several new biomarkers have been proposed for improved diagnosis of PBC in recent years. The biomarkers include the autoantibodies KLHL12 and HK1, genetic markers in HLA regions, metabolomic profiling, miRNAs, and epigenetics.

“Development of clinical governance is of great importance in order to ensure that clinical standards are met, and that processes are in place to ensure continuing improvement and harmonization between laboratories. The guidance should include the whole testing process, beginning from the formulation of a reasonable clinical suspicion and the request of the most appropriate autoantibody test and continuing with handling of biological samples,” the investigators said.

Find the full review in Expert Review of Molecular Diagnostics (doi: 10.1080/14737159.2016.1217159).

lfranki@frontlinemedcom.com

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Antibiotic susceptibility differs in transplant recipients

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Antibiotic susceptibility in bacteria cultured from transplant recipients at a single hospital differed markedly from that in hospital-wide antibiograms, according to a report published in Diagnostic Microbiology and Infectious Disease.

Understanding the differences in antibiotic susceptibility among these highly immunocompromised patients can help guide treatment when they develop infection, and reduce the delay before they begin receiving appropriate antibiotics, said Rossana Rosa, MD, of Jackson Memorial Hospital, Miami, and her associates.

The investigators examined the antibiotic susceptibility of 1,889 isolates from blood and urine specimens taken from patients who had received solid-organ transplants at a single tertiary-care teaching hospital and then developed bacterial infections during a 2-year period. These patients included both children and adults who had received kidney, pancreas, liver, heart, lung, or intestinal transplants and were treated in numerous, “geographically distributed” units throughout the hospital. Their culture results were compared with those from 10,439 other patients with bacterial infections, which comprised the hospital-wide antibiograms developed every 6 months during the study period.

 

The Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa isolates from the transplant recipients showed markedly less susceptibility to first-line antibiotics than would have been predicted by the hospital-antibiograms. In particular, in the transplant recipients E. coli infections were resistant to trimethoprim-sulfamethoxazole, levofloxacin, and ceftriaxone; K. pneumoniae infections were resistant to every antibiotic except amikacin; and P. aeruginosa infections were resistant to levofloxacin, cefepime, and amikacin (Diag Microbiol Infect Dis. 2016 Aug 25. doi: 10.1016/j.diagmicrobio.2016.08.018).

“We advocate for the development of antibiograms specific to solid-organ transplant recipients. This may allow intrahospital comparisons and intertransplant-center monitoring of trends in antimicrobial resistance over time,” Dr. Rosa and her associates said.

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Antibiotic susceptibility in bacteria cultured from transplant recipients at a single hospital differed markedly from that in hospital-wide antibiograms, according to a report published in Diagnostic Microbiology and Infectious Disease.

Understanding the differences in antibiotic susceptibility among these highly immunocompromised patients can help guide treatment when they develop infection, and reduce the delay before they begin receiving appropriate antibiotics, said Rossana Rosa, MD, of Jackson Memorial Hospital, Miami, and her associates.

The investigators examined the antibiotic susceptibility of 1,889 isolates from blood and urine specimens taken from patients who had received solid-organ transplants at a single tertiary-care teaching hospital and then developed bacterial infections during a 2-year period. These patients included both children and adults who had received kidney, pancreas, liver, heart, lung, or intestinal transplants and were treated in numerous, “geographically distributed” units throughout the hospital. Their culture results were compared with those from 10,439 other patients with bacterial infections, which comprised the hospital-wide antibiograms developed every 6 months during the study period.

 

The Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa isolates from the transplant recipients showed markedly less susceptibility to first-line antibiotics than would have been predicted by the hospital-antibiograms. In particular, in the transplant recipients E. coli infections were resistant to trimethoprim-sulfamethoxazole, levofloxacin, and ceftriaxone; K. pneumoniae infections were resistant to every antibiotic except amikacin; and P. aeruginosa infections were resistant to levofloxacin, cefepime, and amikacin (Diag Microbiol Infect Dis. 2016 Aug 25. doi: 10.1016/j.diagmicrobio.2016.08.018).

“We advocate for the development of antibiograms specific to solid-organ transplant recipients. This may allow intrahospital comparisons and intertransplant-center monitoring of trends in antimicrobial resistance over time,” Dr. Rosa and her associates said.

Antibiotic susceptibility in bacteria cultured from transplant recipients at a single hospital differed markedly from that in hospital-wide antibiograms, according to a report published in Diagnostic Microbiology and Infectious Disease.

Understanding the differences in antibiotic susceptibility among these highly immunocompromised patients can help guide treatment when they develop infection, and reduce the delay before they begin receiving appropriate antibiotics, said Rossana Rosa, MD, of Jackson Memorial Hospital, Miami, and her associates.

The investigators examined the antibiotic susceptibility of 1,889 isolates from blood and urine specimens taken from patients who had received solid-organ transplants at a single tertiary-care teaching hospital and then developed bacterial infections during a 2-year period. These patients included both children and adults who had received kidney, pancreas, liver, heart, lung, or intestinal transplants and were treated in numerous, “geographically distributed” units throughout the hospital. Their culture results were compared with those from 10,439 other patients with bacterial infections, which comprised the hospital-wide antibiograms developed every 6 months during the study period.

 

The Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa isolates from the transplant recipients showed markedly less susceptibility to first-line antibiotics than would have been predicted by the hospital-antibiograms. In particular, in the transplant recipients E. coli infections were resistant to trimethoprim-sulfamethoxazole, levofloxacin, and ceftriaxone; K. pneumoniae infections were resistant to every antibiotic except amikacin; and P. aeruginosa infections were resistant to levofloxacin, cefepime, and amikacin (Diag Microbiol Infect Dis. 2016 Aug 25. doi: 10.1016/j.diagmicrobio.2016.08.018).

“We advocate for the development of antibiograms specific to solid-organ transplant recipients. This may allow intrahospital comparisons and intertransplant-center monitoring of trends in antimicrobial resistance over time,” Dr. Rosa and her associates said.

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Key clinical point: Antibiotic susceptibility in bacteria cultured from transplant recipients differs markedly from that in hospital-wide antibiograms.

Major finding: In the transplant recipients, E. coli infections were resistant to trimethoprim-sulfamethoxazole, levofloxacin, and ceftriaxone; K. pneumoniae infections were resistant to every antibiotic except amikacin; and P. aeruginosa infections were resistant to levofloxacin, cefepime, and amikacin.

Data source: A single-center study comparing the antibiotic susceptibility of 1,889 bacterial isolates from transplant recipients with 10,439 isolates from other patients.

Disclosures: This study was not supported by funding from any public, commercial, or not-for-profit entities. Dr. Rosa and her associates reported having no relevant financial disclosures.

Patients with HBV inadequately monitored for disease activity

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Patients with HBV inadequately monitored for disease activity

Chronic hepatitis B virus patients are insufficiently monitored for disease activity and hepatocellular carcinoma (HCC), according to Philip R. Spradling, MD, and his associates of the Centers for Disease Control and Prevention.

 

Betty Partin/CDC
This negatively stained transmission electron micrograph revealed the presence of numerous hepatitis B virus virions, also know as Dane particles. HBV contains a genome of DNA.

In a cohort study of 2,992 patients with CHB, 2,338 were used for assessment. Researchers used alanine aminotransferase (ALT) monitoring, HBV DNA monitoring, assessment for cirrhosis, and HBV antiviral therapy for examination. For ALT monitoring, 1,814 (78%) of patients had at least one ALT level obtained per year of follow-up. Only 876 patients (37%) had at least one HBV DNA level assessment per year of follow-up and 1,037 (44%) had less than annual testing, and 18% of patients never had an HBV DNA level assessed. Among patients with cirrhosis, 297 (54%) had HBV DNA testing done at least annually, 189 (35%) had testing done but less frequently than annually, and 61 (11%) never had an HBV DNA test done. And of the 547 patients with cirrhosis, 305 (56%) were prescribed HBV antiviral therapy.

It was noted that patients were monitored during 2006-2013. Only 68% of patients had not been prescribed treatment, and 72% had received liver-related specialty care.

“Our findings reiterate the need for clinicians who treat patients with [chronic HBV] to provide ongoing, continual assessment of disease activity based on HBV DNA and ALT levels, as well as liver imaging surveillance among patients at high risk for HCC,” researchers concluded. “As antiviral therapy for [chronic HBV] now includes potent and highly efficacious oral agents that have few contraindications and minimal side effects, as well as a high barrier to resistance, clinicians should be vigilant for opportunities to decrease the likelihood of poor clinical outcomes.”

Read the full study in Clinical Infectious Diseases here.

llaubach@frontlinemedcom.com

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Chronic hepatitis B virus patients are insufficiently monitored for disease activity and hepatocellular carcinoma (HCC), according to Philip R. Spradling, MD, and his associates of the Centers for Disease Control and Prevention.

 

Betty Partin/CDC
This negatively stained transmission electron micrograph revealed the presence of numerous hepatitis B virus virions, also know as Dane particles. HBV contains a genome of DNA.

In a cohort study of 2,992 patients with CHB, 2,338 were used for assessment. Researchers used alanine aminotransferase (ALT) monitoring, HBV DNA monitoring, assessment for cirrhosis, and HBV antiviral therapy for examination. For ALT monitoring, 1,814 (78%) of patients had at least one ALT level obtained per year of follow-up. Only 876 patients (37%) had at least one HBV DNA level assessment per year of follow-up and 1,037 (44%) had less than annual testing, and 18% of patients never had an HBV DNA level assessed. Among patients with cirrhosis, 297 (54%) had HBV DNA testing done at least annually, 189 (35%) had testing done but less frequently than annually, and 61 (11%) never had an HBV DNA test done. And of the 547 patients with cirrhosis, 305 (56%) were prescribed HBV antiviral therapy.

It was noted that patients were monitored during 2006-2013. Only 68% of patients had not been prescribed treatment, and 72% had received liver-related specialty care.

“Our findings reiterate the need for clinicians who treat patients with [chronic HBV] to provide ongoing, continual assessment of disease activity based on HBV DNA and ALT levels, as well as liver imaging surveillance among patients at high risk for HCC,” researchers concluded. “As antiviral therapy for [chronic HBV] now includes potent and highly efficacious oral agents that have few contraindications and minimal side effects, as well as a high barrier to resistance, clinicians should be vigilant for opportunities to decrease the likelihood of poor clinical outcomes.”

Read the full study in Clinical Infectious Diseases here.

llaubach@frontlinemedcom.com

Chronic hepatitis B virus patients are insufficiently monitored for disease activity and hepatocellular carcinoma (HCC), according to Philip R. Spradling, MD, and his associates of the Centers for Disease Control and Prevention.

 

Betty Partin/CDC
This negatively stained transmission electron micrograph revealed the presence of numerous hepatitis B virus virions, also know as Dane particles. HBV contains a genome of DNA.

In a cohort study of 2,992 patients with CHB, 2,338 were used for assessment. Researchers used alanine aminotransferase (ALT) monitoring, HBV DNA monitoring, assessment for cirrhosis, and HBV antiviral therapy for examination. For ALT monitoring, 1,814 (78%) of patients had at least one ALT level obtained per year of follow-up. Only 876 patients (37%) had at least one HBV DNA level assessment per year of follow-up and 1,037 (44%) had less than annual testing, and 18% of patients never had an HBV DNA level assessed. Among patients with cirrhosis, 297 (54%) had HBV DNA testing done at least annually, 189 (35%) had testing done but less frequently than annually, and 61 (11%) never had an HBV DNA test done. And of the 547 patients with cirrhosis, 305 (56%) were prescribed HBV antiviral therapy.

It was noted that patients were monitored during 2006-2013. Only 68% of patients had not been prescribed treatment, and 72% had received liver-related specialty care.

“Our findings reiterate the need for clinicians who treat patients with [chronic HBV] to provide ongoing, continual assessment of disease activity based on HBV DNA and ALT levels, as well as liver imaging surveillance among patients at high risk for HCC,” researchers concluded. “As antiviral therapy for [chronic HBV] now includes potent and highly efficacious oral agents that have few contraindications and minimal side effects, as well as a high barrier to resistance, clinicians should be vigilant for opportunities to decrease the likelihood of poor clinical outcomes.”

Read the full study in Clinical Infectious Diseases here.

llaubach@frontlinemedcom.com

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Younger age, inconsistency of care affect antiviral adherence in hepatitis B

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Younger age, inconsistency of care affect antiviral adherence in hepatitis B

Patients with chronic hepatitis B who are aged under 35 years or do not see the same clinician consistently are more likely to not take their antiviral medication, finds the largest study of its kind to date.

According to the authors of the research led by Nicole Allard, PhD, from the WHO collaborative Centre for Viral Hepatitis and the Peter Doherty Institute for Infection and Immunity in Melbourne, their findings illustrate the need for clinicians to reinforce the importance of medication adherence at each patient consultation.

CDC/Dr. Erskine Palmer

Furthermore, “providing more flexible and convenient care arrangements, reminder systems, and working with the individual to maximize medication adherence should be a routine part of clinical practice,” they wrote in their paper published in the Journal of Viral Hepatitis. Previous research had shown that adherence to antiviral therapy in the treatment of hepatitis B was associated with improved patient outcomes. Suboptimal adherence could lead to antiviral resistance or antiviral breakthrough, potentially leading to liver cirrhosis and liver cancer.

Understanding poor adherence in clinical settings, together with the factors associated with lower adherence, was important in informing efforts for promoting adherence, the research team said (J Viral Hepat. 2016. doi: 10.1111/jvh.12582).

In their retrospective study they assessed the pharmacy records of 1,026 patients who were dispensed antiviral therapy for hepatitis B across four Australian public hospital outpatient clinics between 2010 and 2013.

They discovered that one in five patients were “nonadherent” to therapy based on a medication possession ratio of less than 0.90 – a cutoff shown in previous studies to be correlated with virologic breakthrough.

One significant factor that affected adherence to medication was being aged under 35 years (P = .002), the research team reported.

This finding was similar to other studies of chronic diseases that had shown younger patients were at a higher risk of nonadherence, the authors noted.

“Recognition of the challenges faced by a younger person regularly taking medication at a time in their lives when they feel well is important,” they wrote.

Poor adherence was also associated with seeing multiple clinicians over shorter periods of time.

“While hospitals accommodate trainees and staffing changes occur regularly, seeking to maximize the consistency of clinical care delivery may be an important strategy to support better adherence and optimizing care for individuals,” they said.

Factors such as variations in the amount of medication, duration of treatment, sex, and cultural background did not affect adherence to medication.

“Adherence is a dynamic process and needs to be addressed regularly in a nonjudgmental way working with individuals towards improved health,” they concluded.

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Patients with chronic hepatitis B who are aged under 35 years or do not see the same clinician consistently are more likely to not take their antiviral medication, finds the largest study of its kind to date.

According to the authors of the research led by Nicole Allard, PhD, from the WHO collaborative Centre for Viral Hepatitis and the Peter Doherty Institute for Infection and Immunity in Melbourne, their findings illustrate the need for clinicians to reinforce the importance of medication adherence at each patient consultation.

CDC/Dr. Erskine Palmer

Furthermore, “providing more flexible and convenient care arrangements, reminder systems, and working with the individual to maximize medication adherence should be a routine part of clinical practice,” they wrote in their paper published in the Journal of Viral Hepatitis. Previous research had shown that adherence to antiviral therapy in the treatment of hepatitis B was associated with improved patient outcomes. Suboptimal adherence could lead to antiviral resistance or antiviral breakthrough, potentially leading to liver cirrhosis and liver cancer.

Understanding poor adherence in clinical settings, together with the factors associated with lower adherence, was important in informing efforts for promoting adherence, the research team said (J Viral Hepat. 2016. doi: 10.1111/jvh.12582).

In their retrospective study they assessed the pharmacy records of 1,026 patients who were dispensed antiviral therapy for hepatitis B across four Australian public hospital outpatient clinics between 2010 and 2013.

They discovered that one in five patients were “nonadherent” to therapy based on a medication possession ratio of less than 0.90 – a cutoff shown in previous studies to be correlated with virologic breakthrough.

One significant factor that affected adherence to medication was being aged under 35 years (P = .002), the research team reported.

This finding was similar to other studies of chronic diseases that had shown younger patients were at a higher risk of nonadherence, the authors noted.

“Recognition of the challenges faced by a younger person regularly taking medication at a time in their lives when they feel well is important,” they wrote.

Poor adherence was also associated with seeing multiple clinicians over shorter periods of time.

“While hospitals accommodate trainees and staffing changes occur regularly, seeking to maximize the consistency of clinical care delivery may be an important strategy to support better adherence and optimizing care for individuals,” they said.

Factors such as variations in the amount of medication, duration of treatment, sex, and cultural background did not affect adherence to medication.

“Adherence is a dynamic process and needs to be addressed regularly in a nonjudgmental way working with individuals towards improved health,” they concluded.

Patients with chronic hepatitis B who are aged under 35 years or do not see the same clinician consistently are more likely to not take their antiviral medication, finds the largest study of its kind to date.

According to the authors of the research led by Nicole Allard, PhD, from the WHO collaborative Centre for Viral Hepatitis and the Peter Doherty Institute for Infection and Immunity in Melbourne, their findings illustrate the need for clinicians to reinforce the importance of medication adherence at each patient consultation.

CDC/Dr. Erskine Palmer

Furthermore, “providing more flexible and convenient care arrangements, reminder systems, and working with the individual to maximize medication adherence should be a routine part of clinical practice,” they wrote in their paper published in the Journal of Viral Hepatitis. Previous research had shown that adherence to antiviral therapy in the treatment of hepatitis B was associated with improved patient outcomes. Suboptimal adherence could lead to antiviral resistance or antiviral breakthrough, potentially leading to liver cirrhosis and liver cancer.

Understanding poor adherence in clinical settings, together with the factors associated with lower adherence, was important in informing efforts for promoting adherence, the research team said (J Viral Hepat. 2016. doi: 10.1111/jvh.12582).

In their retrospective study they assessed the pharmacy records of 1,026 patients who were dispensed antiviral therapy for hepatitis B across four Australian public hospital outpatient clinics between 2010 and 2013.

They discovered that one in five patients were “nonadherent” to therapy based on a medication possession ratio of less than 0.90 – a cutoff shown in previous studies to be correlated with virologic breakthrough.

One significant factor that affected adherence to medication was being aged under 35 years (P = .002), the research team reported.

This finding was similar to other studies of chronic diseases that had shown younger patients were at a higher risk of nonadherence, the authors noted.

“Recognition of the challenges faced by a younger person regularly taking medication at a time in their lives when they feel well is important,” they wrote.

Poor adherence was also associated with seeing multiple clinicians over shorter periods of time.

“While hospitals accommodate trainees and staffing changes occur regularly, seeking to maximize the consistency of clinical care delivery may be an important strategy to support better adherence and optimizing care for individuals,” they said.

Factors such as variations in the amount of medication, duration of treatment, sex, and cultural background did not affect adherence to medication.

“Adherence is a dynamic process and needs to be addressed regularly in a nonjudgmental way working with individuals towards improved health,” they concluded.

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Key clinical point: Adherence to antiviral medication is a dynamic process that clinicians need to address regularly in a nonjudgmental way at each consultation, particularly in younger patients. Providing flexible and convenient care arrangements that foster continuity of care will also improve adherence to medication.

Major finding: One in five patients with hepatitis B were nonadherent to antiviral medications. Younger age (under 35) (P = .002), and inconsistency of care predicted nonadherence.

Data Source: A retrospective study of the pharmacy records of 1,026 patients who were attending a public hospital clinic and were prescribed antiviral therapy for hepatitis B.

Disclosures: Dr. Nicole Allard is supported by an APA scholarship from the University of Melbourne. Funding for the project was provided by the Royal Melbourne Hospital lottery grant. Dr. Allard declared no conflicts of interest in the last 3 years. Several of the authors in the group reported financial ties to pharmaceutical companies.

Predisposition to overlapping AIH and PBC can exist within families

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A genetic predisposition to autoimmune liver disease can cause overlapping cases of autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) within the same family, according to a case report from Japanese researchers.

A 68-year-old woman and her 49-year-old daughter were admitted to the hospital for liver dysfunction, 4 years apart. The mother had been diagnosed with PBC at a previous hospital, but was moved after treatment with 600 mg ursodeoxycholic acid (UDCA) was ineffective. The daughter had no previous diagnosis and had a variety of symptoms at admission, including jaundice, general fatigue, and darkness of the urine.

Both the mother and the daughter were negative for hepatitis A, B, and C. A simplified International Autoimmune Hepatitis Group score revealed probable AIH for both patients, and both patients were diagnosed with autoimmune liver disease with overlapping features of PBC and AIH. Treatment with UDCA and prednisolone was effective for both patients.

In a familial study, the mother and her two daughters were tested for liver function, autoantibodies, and human leukocyte antigen (HLA) haplotype. The second daughter, who was healthy with no history of liver dysfunction, had normal liver function, negative ANA, and positive AMA-M2 antibody, but had an HLA haplotype different from that of the mother and the first daughter. No difference in medication use, smoking status, alcohol consumption, or obstetric history was seen.

“The exact mechanism underlying the onset of PBC and AIH overlap within the same family remains unclear. Therefore, it is very important to monitor the healthy second daughter closely as she was positive for the AMA-M2 antibody, as this might yield further knowledge with regard to what factors influence the onset of PBC and AIH overlap within the same family,” the investigators noted.

Find the full study in the Journal of Clinical Gastroenterology (doi: 10.1007/s12328-016-0676-1)

lfranki@frontlinemedcom.com

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A genetic predisposition to autoimmune liver disease can cause overlapping cases of autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) within the same family, according to a case report from Japanese researchers.

A 68-year-old woman and her 49-year-old daughter were admitted to the hospital for liver dysfunction, 4 years apart. The mother had been diagnosed with PBC at a previous hospital, but was moved after treatment with 600 mg ursodeoxycholic acid (UDCA) was ineffective. The daughter had no previous diagnosis and had a variety of symptoms at admission, including jaundice, general fatigue, and darkness of the urine.

Both the mother and the daughter were negative for hepatitis A, B, and C. A simplified International Autoimmune Hepatitis Group score revealed probable AIH for both patients, and both patients were diagnosed with autoimmune liver disease with overlapping features of PBC and AIH. Treatment with UDCA and prednisolone was effective for both patients.

In a familial study, the mother and her two daughters were tested for liver function, autoantibodies, and human leukocyte antigen (HLA) haplotype. The second daughter, who was healthy with no history of liver dysfunction, had normal liver function, negative ANA, and positive AMA-M2 antibody, but had an HLA haplotype different from that of the mother and the first daughter. No difference in medication use, smoking status, alcohol consumption, or obstetric history was seen.

“The exact mechanism underlying the onset of PBC and AIH overlap within the same family remains unclear. Therefore, it is very important to monitor the healthy second daughter closely as she was positive for the AMA-M2 antibody, as this might yield further knowledge with regard to what factors influence the onset of PBC and AIH overlap within the same family,” the investigators noted.

Find the full study in the Journal of Clinical Gastroenterology (doi: 10.1007/s12328-016-0676-1)

lfranki@frontlinemedcom.com

A genetic predisposition to autoimmune liver disease can cause overlapping cases of autoimmune hepatitis (AIH) and primary biliary cholangitis (PBC) within the same family, according to a case report from Japanese researchers.

A 68-year-old woman and her 49-year-old daughter were admitted to the hospital for liver dysfunction, 4 years apart. The mother had been diagnosed with PBC at a previous hospital, but was moved after treatment with 600 mg ursodeoxycholic acid (UDCA) was ineffective. The daughter had no previous diagnosis and had a variety of symptoms at admission, including jaundice, general fatigue, and darkness of the urine.

Both the mother and the daughter were negative for hepatitis A, B, and C. A simplified International Autoimmune Hepatitis Group score revealed probable AIH for both patients, and both patients were diagnosed with autoimmune liver disease with overlapping features of PBC and AIH. Treatment with UDCA and prednisolone was effective for both patients.

In a familial study, the mother and her two daughters were tested for liver function, autoantibodies, and human leukocyte antigen (HLA) haplotype. The second daughter, who was healthy with no history of liver dysfunction, had normal liver function, negative ANA, and positive AMA-M2 antibody, but had an HLA haplotype different from that of the mother and the first daughter. No difference in medication use, smoking status, alcohol consumption, or obstetric history was seen.

“The exact mechanism underlying the onset of PBC and AIH overlap within the same family remains unclear. Therefore, it is very important to monitor the healthy second daughter closely as she was positive for the AMA-M2 antibody, as this might yield further knowledge with regard to what factors influence the onset of PBC and AIH overlap within the same family,” the investigators noted.

Find the full study in the Journal of Clinical Gastroenterology (doi: 10.1007/s12328-016-0676-1)

lfranki@frontlinemedcom.com

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