By: Marcus J. Hopkins, Blogger
Patients who are co-infected with both HIV and Hepatitis C (HCV) demonstrated similar cure (Sustained Virologic Response – SVR) rates as patients who were monoinfected with HCV, according to research published in Hepatology, a journal published on behalf of The American Association for the Study of Liver Diseases. These findings were gathered using a review of studies dated January 2004 to July 2017, and came to the conclusion that the designation of patients co-infected with HIV/HCV as a “special population” by the U.S. Food & Drug Administration (FDA) should be reconsidered, given the advent and increasing use of Direct Acting Antivirals (DAAs) to treat HCV.
The special population designation by the FDA is designed to allow physicians and researchers to take into consideration populations who, for a variety of reasons – weight, existing disease morbidity, age, body composition, pregnancy, et cetera – may not respond in a typical fashion to standard treatment regimens. For patients living with HIV, many of the HIV-specific treatment regimens, until the past decade or so, made treating co-morbidities not HIV-related difficult, as other drugs would hamper or have their effects hampered by the medications used to treat patients’ HIV. The advent of newer, more easily tolerated, and more effective HIV medications has allowed for more flexibility.
Thus is the case with HIV/HCV co-infection. Prior to the entry of HCV DAAs to the market in 2013, interferon-based treatments were the only way to actively achieve SVR in HCV-infected patients. Notoriously difficult to tolerate and with a high treatment abandonment rate, interferon-based regimens resulted in very low SVR rates for both mono- and co-infected patients. This, along with the fact that co-infected populations experience accelerated progression of HCV-related liver disease, as well as existing barriers to care, led the FDA to designated HIV/HCV co-infected patients as a specific population with unmet medical needs.
The newer regiments, which are both easier to tolerate and exponentially more effective at achieving SVR, have produced similar SVR rates in both mono- and co-infected populations. This serves as good news to physicians and patients, alike. While these findings are welcome news, physicians must still be certain to determine if HCV regimens will have any counterindications with existing HIV therapies. Current treatment recommendations advise against stopping HIV therapy to pursue HCV treatment.
- Sikavi, C., Chen, P. H., Lee, A. D., Saab, E. G., Choi, G. & Saab, S. (2017, November 06). Hepatitis C and Human Immunodeficiency Virus Co-Infection in the Era of Direct-Acting Antiviral Agents: No Longer A Difficult to Treat Population. Hepatology. Alexandria, VA: The American Association for the Study of Liver Diseases. Accepted Author Manuscript. doi:10.1002/hep.29642
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