VEMLIDY demonstrated improvement of cirrhosis and fibrosis in chronic hepatitis B patients through 8 years1

Powerful efficacy maintained over the long term with 0% resistance1
Cirrhosis
Fibrosis

Regression or halting of fibrosis progression seen with VEMLIDY through 8 years1,2

See primary endpoint data See trial design

Regression or halting of fibrosis progression in chronic hepatitis B patients who were non-cirrhotic at baseline

Year 3 Data: Among the 1298 randomized and treated patients, 644 remained in the double-blind phase at Week 144, and 398 patients from the VEMLIDY group and 193 patients from the TDF group had FibroTest data available for analysis at both baseline and Week 144. The graphs show the results for those patients who had F2-F3 fibrosis (FibroTest scores of 0.49-0.74) at baseline (74 patients in the VEMLIDY group and 33 patients in the TDF group).2

Year 8 Data: Among the 1298 randomized and treated patients, 575 patients from the VEMLIDY→VEMLIDY group and 282 patients from the TDF→VEMLIDY groups had FibroTest data available for analysis at both baseline and Week 384. The graphs show the results for those patients who had F2-F3 fibrosis (FibroTest scores of 0.49-0.74) at baseline (121 patients in the VEMLIDY→VEMLIDY group and 55 patients in the TDF→VEMLIDY groups).1

Resistance Fibrosis

Limitations: In Trials 108 and 110 at baseline, 20% of VEMLIDY patients and 19% of TDF patients had F2-F3 fibrosis.1

ALT=alanine aminotransferase; OLE=open-label extension; TDF=tenofovir disoproxil fumarate.

a Included data from 29 patients who switched from TDF to VEMLIDY at Week 96 and 26 patients who switched from TDF to VEMLIDY at Week 144.2

Additional context regarding the data presented above

  • Change from baseline in fibrosis assessed by FibroTest score (missing=excluded analysis) for VEMLIDY vs TDF was a secondary endpoint in Trials 108 and 110. Liver biopsies and FibroScan® tests were not conducted as part of Trials 108 and 1103,4
  • FibroTest is a noninvasive measure of liver fibrosis and combines 5 standard biomarkers: gamma-glutamyl transpeptidase, total bilirubin, alpha-2-macroglobulin, apolipoprotein A1, and haptoglobin. Note that FibroTest does not include ALT. FibroTest has been validated for assessing fibrosis in patients with chronic hep B5
  • The clinical relevance of these changes in FibroTest scores is not known
  • This analysis is not presented in the VEMLIDY full Prescribing Information
  • Fibrosis analysis is not powered for statistical significance, and data should be considered descriptive only

Effect of VEMLIDY on renal safety parameters1,6

See pivotal and 8-year
follow-up data

Impact of VEMLIDY on bone mineral density1,6

See pivotal and 8-year
follow-up data

References: 1. Buti M, Lim YS, Chan HLY, et al. Eight-year efficacy and safety of tenofovir alafenamide for treatment of chronic hepatitis B virus infection: final results from two randomised phase 3 trials. Aliment Pharmacol Ther. 2024;60(11-12):1573-1586. doi:10.1111/apt.18278 2. Data on file. Gilead Sciences, Inc. 3. Chan HLY, Fung S, Seto WK, et al; GS-US-320-0110 investigators. Tenofovir alafenamide versus tenofovir disoproxil fumarate for the treatment of HBeAg-positive chronic hepatitis B virus infection: a randomised, double-blind, phase 3, non-inferiority trial. Lancet Gastroenterol Hepatol. 2016;1(3):185-195. doi:10.1016/S2468-1253(16)30024-3 4. Buti M, Gane E, Seto WK, et al. Tenofovir alafenamide versus tenofovir disoproxil fumarate for the treatment of patients with HBeAg-negative chronic hepatitis B virus infection: a randomised, double-blind, phase 3, non-inferiority trial. Lancet Gastroenterol Hepatol. 2016;1(3):196-206. doi:10.1016/S2468-1253(16)30107-8 5. Parikh P, Ryan JD, Tsochatzis EA. Fibrosis assessment in patients with chronic hepatitis B virus (HBV) infection. Ann Transl Med. 2017;5(3):40. doi:10.21037/atm.2017.01.28. 6. VEMLIDY Prescribing Information. Foster City, CA: Gilead Sciences, Inc.; March 2024.