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Co-infected HCV and HIV Patients Receive More Effective Treatments

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Posted July 22, 2015

Researchers have found that using a combination of sofosbuvir and a new drug agent known as daclastasvir is highly successful in treating co-infected hepatitis C (HCV) and HIV patients.

A report in the July 21 edition of the New England Journal of Medicine shows HIV-HCV co-infected patients who had not previously been treated for hepatitis C, but received 12 weeks of treatment with sofosbuvir and daclastasvir achieved a 97 percent cure (sustained virologic response). Daclatasvir is a hepatitis C virus NS5A inhibitor and sofosuvir is an NS5B inhibitor.

“This regimen was compatible with almost all HIV drug regimens and that made it relatively unique,” explains Kenneth Sherman, MD, PhD, a co-author of the study and Director of the Division of Digestive Diseases in the University of Cincinnati (UC) College of Medicine.

“We are treating patients who have hepatitis C along with HIV, which have long been considered one of the most difficult groups of patients to treat and manage and in part that’s because of drug interactions between the drugs used to treat HIV and the drugs used to treat hepatitis C,” says Sherman, also a UC Health physician.

It’s meant that co-infected HCV and HIV patients often had to change their HIV treatment before hepatitis C could be treated and that incurred its own risk, explains Sherman. In the United States, about 300,000 people are co-infected with HCV and HIV, he says.

The study reported in the Journal was sponsored by Bristol-Myers Squibb and included 151 patients who had not received HCV treatment along with 52 previously treated patients. At UC, six participants were part of this study. The study’s lead author was David Wyles, MD, associate professor of medicine at the University of California San Diego.

Sherman says the study was open label in the sense all patients got the same treatment, but that treatment in the naïve arm (individuals who had never been treated for hepatitis C) was randomized but not blinded. The study was open to patients with all genotypes of the hepatitis C virus, he explains.

Treatment naïve patients also achieved a 76 percent cure (sustained virologic response) rate after just eight weeks of treatment with sofosbuvir and daclastasvir, according to the Journal study.

“The shortened therapy demonstrated had good results,” says Sherman. “Two years ago this would have been regarded as excellent and nothing short of incredible. Now we were are looking for rates of 90 percent or better.”

Sherman says the study shows that the treatment is well-tolerated in co-infected patients who already have an increased risk of drug interactions and pill burden issues. He says there are few side effects and that patients were asked to take two pills daily for an eight- or 12-week period.

If hepatitis C is not treated it leads to liver disease, cirrhosis and liver cancer. Untreated hepatitis C is the leading cause of death among HIV-infected patients living in western countries, Sherman says.

Source: University of Cincinnati

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