Real-world effectiveness of ledipasvir/sofosbuvir in 4,365 treatment-naive, genotype 1 hepatitis C-infected patients.
Real-world effectiveness data are needed to inform hepatitis C virus (HCV) treatment decisions. The uptake of ledipasvir/sofosbuvir (LDV/SOF) regimens across health care settings has been rapid, but variations often occur in clinical practice. The aim of this study was to assess sustained virologic response (SVR) of LDV/SOF±ribavirin (RBV) in routine medical practice. This observational, intent-to-treat cohort was comprised of 4,365 genotype 1, treatment-naive, HCV-infected veterans treated with LDV/SOF±RBV. SVR rates were 91.3% (3,191/3,495) for LDV/SOF and 92.0% (527/573) for LDV/SOF+RBV (P = 0.65). African American race (odds ratio 0.70, 95% confidence interval 0.54-0.90, P  = 0.004) and FIB-4 >3.25 (odds ratio 0.56, 95% confidence interval 0.43-0.71, P < 0.001) were independently associated with decreased likelihood of SVR; age, sex, body mass index, decompensated liver disease, diabetes, genotype 1 subtype, and regimen did not predict SVR. In models limited to those who completed 12 weeks of treatment, African American race was no longer a significant predictor of SVR but FIB-4 >3.25 (odds ratio 0.35, 95% confidence interval 0.24-0.50, P < 0.001) remained. Among those without cirrhosis (defined by FIB-4 ≤3.25) and with baseline HCV RNA<6,000,000 IU/mL, SVR rates were 93.2% (1,020/1,094) for those who completed 8 weeks of therapy and 96.6% (875/906) for those who completed 12 weeks of therapy (P = 0.001).



In this real-world cohort, SVR rates with LDV/SOF±RBV nearly matched the rates reported in clinical trials and were consistently high across all subgroups; those without cirrhosis but with HCV RNA<6,000,000 IU/mL were less likely to achieve SVR with 8 weeks compared to 12 weeks of therapy, although the numeric difference in SVR rates was small. (Hepatology 2016;64:405-414).
Department of Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA.
Lisa I
LI
Backus
Department of Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA.
Pamela S
PS
Belperio
Department of Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA.
Troy A
TA
Shahoumian
Department of Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA.
Timothy P
TP
Loomis
Department of Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA.
Larry A
LA
Mole
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000998:Antiviral Agents / Q000627:therapeutic use*; D001562:Benzimidazoles / Q000627:therapeutic use*; D015331:Cohort Studies; D005260:Female; D005449:Fluorenes / Q000627:therapeutic use*; D016174:Hepacivirus / Q000235:genetics; D006526:Hepatitis C / Q000188:drug therapy* / Q000821:virology; D006801:Humans; D008297:Male; D008875:Middle Aged; D000069474:Sofosbuvir; D016896:Treatment Outcome; D014542:Uridine Monophosphate / Q000031:analogs & derivatives* / Q000627:therapeutic use
D000998:Antiviral Agents; D001562:Benzimidazoles; D005449:Fluorenes; C000595958:ledipasvir, sofosbuvir drug combination; D014542:Uridine Monophosphate; D000069474:Sofosbuvir