Real-World Safety and Effectiveness of an 8-Week Regimen of Glecaprevir/Pibrentasvir in Patients with Hepatitis C and Cirrhosis.

Introduction: In 2019, an 8-week regimen of glecaprevir/ pibrentasvir (GLE/PIB) was FDA-approved for treatment of chronic hepatitis C (HCV) in patients with cirrhosis. We used data from the Chronic Hepatitis Cohort Study (CHeCS) to evaluate treatment response and adverse events among patients with HCV and cirrhosis under routine clinical care.

Methods: Using an intention-to-treat (ITT)/modified ITT (mITT) approach, endpoints were (1) sustained virological response (SVR) at 12 weeks (SVR12) post-treatment; and (2) adverse events (AEs)/serious AEs during treatment. Patients with cirrhosis from two CHeCS sites were included if they were prescribed GLE/PIB from August 2017 to June 2020. Detailed treatment and clinical data were collected. Patient baseline characteristics were described with mean/standard deviation (std) for continuous variables, and proportions for categorical variables. Analyses were propensity score adjusted. The final model retained variables that were significant with p value < 0.05.

Results: The ITT sample included 166 patients, with 43, 116, and 7 patients in the 8-week, 12-week, and > 12-week planned treatment groups. Among them, 159 had confirmed SVR (95.8%, LCL 93.2%). The mITT analysis included 160 patients after excluding 6 with unknown HCV RNA results; 159 achieved SVR (99.4%, LCL 98.3%). There were no significant differences in rates of SVR between the 8-week and 12-week regimens in either analysis, nor any association with patient characteristics. SAEs were experienced by 1 patient (2%) in the 8-week group, 7 (5%) in the 12-week group (including one death), and 2 (29%) in the > 12-week group; 4 patients (from the 12-week group) experienced serious AEs or hepatic events that were "likely attributable" to GLE/PIB treatment.

Conclusion: An 8-week regimen of GLE/PIB is well tolerated and highly effective among US patients with HCV and cirrhosis receiving routine clinical care.