Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.

<h4>Background and aims</h4>Chronic hepatitis B (CHB) disproportionately affects the Asian-American population in the USA. Tenofovir disoproxil fumarate (TDF) has demonstrated potent antiviral activity in clinical trials, but data in Asian-Americans from community studies are lacking.<...

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Auteurs principaux:	Calvin Q Pan, Huy Trinh, Alan Yao, Ho Bae, Lillian Lou, Sing Chan, Study 123 Group
Format:	article
Langue:	EN
Publié:	Public Library of Science (PLoS) 2014
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/38e325050d114207a6f6ad3e0fc2991a
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spelling	oai:doaj.org-article:38e325050d114207a6f6ad3e0fc2991a2021-11-18T08:29:53ZEfficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.1932-620310.1371/journal.pone.0089789https://doaj.org/article/38e325050d114207a6f6ad3e0fc2991a2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24594870/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background and aims</h4>Chronic hepatitis B (CHB) disproportionately affects the Asian-American population in the USA. Tenofovir disoproxil fumarate (TDF) has demonstrated potent antiviral activity in clinical trials, but data in Asian-Americans from community studies are lacking.<h4>Methods</h4>Adult Asian-American patients with CHB from private medical and community-based practices were prospectively enrolled and treated with open-label TDF 300 mg once daily in a single-arm study for 48 weeks. After Week 48, patients had the option to transition to commercially available CHB therapy. The primary efficacy endpoint was hepatitis B virus (HBV) DNA <400 copies/mL at Week 48. Secondary endpoints were safety and tolerability, serologic and biochemical responses, liver fibrosis by FibroTest, and the development of drug-resistant mutations.<h4>Results</h4>Of the 90 patients enrolled, 53 (58%) were hepatitis B e antigen (HBeAg)-positive at baseline. At Week 48, 74 patients (82% overall; 70% HBeAg-positive and 100% HBeAg-negative) had HBV DNA <400 copies/mL. Six (12%) HBeAg-positive patients achieved HBeAg loss/seroconversion. The percentage of patients with alanine aminotransferase in the normal range increased from 26% at baseline to 66% at Week 48. The percentage of patients with F0 (no or minimal) fibrosis by FibroTest increased from 48% to 51%, and those with F4 (severe) fibrosis decreased from 4% to 1%. No resistance to TDF developed. Treatment was well tolerated. Most adverse events were mild in severity and considered unrelated to study drug.<h4>Conclusions</h4>TDF is effective and well tolerated in Asian-American CHB patients in community clinic-based settings, consistent with larger registration trials. Improvement in liver fibrosis was seen in a proportion of patients. No resistance to TDF developed through 48 weeks of treatment.<h4>Trial registration</h4>Clinicaltrial.gov identifier NCT00736190.Calvin Q PanHuy TrinhAlan YaoHo BaeLillian LouSing ChanStudy 123 GroupPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e89789 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Calvin Q Pan Huy Trinh Alan Yao Ho Bae Lillian Lou Sing Chan Study 123 Group Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.
description	<h4>Background and aims</h4>Chronic hepatitis B (CHB) disproportionately affects the Asian-American population in the USA. Tenofovir disoproxil fumarate (TDF) has demonstrated potent antiviral activity in clinical trials, but data in Asian-Americans from community studies are lacking.<h4>Methods</h4>Adult Asian-American patients with CHB from private medical and community-based practices were prospectively enrolled and treated with open-label TDF 300 mg once daily in a single-arm study for 48 weeks. After Week 48, patients had the option to transition to commercially available CHB therapy. The primary efficacy endpoint was hepatitis B virus (HBV) DNA <400 copies/mL at Week 48. Secondary endpoints were safety and tolerability, serologic and biochemical responses, liver fibrosis by FibroTest, and the development of drug-resistant mutations.<h4>Results</h4>Of the 90 patients enrolled, 53 (58%) were hepatitis B e antigen (HBeAg)-positive at baseline. At Week 48, 74 patients (82% overall; 70% HBeAg-positive and 100% HBeAg-negative) had HBV DNA <400 copies/mL. Six (12%) HBeAg-positive patients achieved HBeAg loss/seroconversion. The percentage of patients with alanine aminotransferase in the normal range increased from 26% at baseline to 66% at Week 48. The percentage of patients with F0 (no or minimal) fibrosis by FibroTest increased from 48% to 51%, and those with F4 (severe) fibrosis decreased from 4% to 1%. No resistance to TDF developed. Treatment was well tolerated. Most adverse events were mild in severity and considered unrelated to study drug.<h4>Conclusions</h4>TDF is effective and well tolerated in Asian-American CHB patients in community clinic-based settings, consistent with larger registration trials. Improvement in liver fibrosis was seen in a proportion of patients. No resistance to TDF developed through 48 weeks of treatment.<h4>Trial registration</h4>Clinicaltrial.gov identifier NCT00736190.
format	article
author	Calvin Q Pan Huy Trinh Alan Yao Ho Bae Lillian Lou Sing Chan Study 123 Group
author_facet	Calvin Q Pan Huy Trinh Alan Yao Ho Bae Lillian Lou Sing Chan Study 123 Group
author_sort	Calvin Q Pan
title	Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.
title_short	Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.
title_full	Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.
title_fullStr	Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.
title_full_unstemmed	Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.
title_sort	efficacy and safety of tenofovir disoproxil fumarate in asian-americans with chronic hepatitis b in community settings.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/38e325050d114207a6f6ad3e0fc2991a
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Efficacy and safety of tenofovir disoproxil fumarate in Asian-Americans with chronic hepatitis B in community settings.

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