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60 02692813
Authors : 7007153523; 57226548822; 58574815200; 7201380739; 7102079502; 35378208900; 57220662417; 56489785600; 7201970083; 7102192003; 6603781991; 6602652260; 58626893800; 58566213400; 57217387509; 58360915100; 57202564203; 7102825519; 28568005400; 8431195300; 14014240400; 56404308000; 7003720102
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Article Information
| Year | 11-12 |
| Type | - |
| DOI | Back ground: In two phase 3 studies, tenofovir alafenamide (TAF) showed non-inferior efficacy versus tenofovir disoproxil fumarate (TDF), with more favourable renal and bone safety in patients with chronic hepatitis B (CHB). Aims: Here, we report the studies' final 8-year results. Methods: CHB patients (hepatitis B e antigen [HBeAg]-negative and HBeAg-positive) were randomised (2:1) to double-blind TAF 25 mg/day or TDF 300 mg/day for up to 3 years, followed by open-label (OL) TAF through year 8. Virological, biochemical, serological and fibrosis responses, and safety, including bone and renal parameters, were evaluated. Resistance to TAF was assessed annually by deep sequencing of polymerase/reverse transcriptase and by phenotyping. Results: Among 1298 patients randomised to double-blind TAF (n = 866) or double-blind TDF (n = 432), 775 in the TAF group and 382 in the TDF group received OL TAF, including 180 and 202 who switched from TDF to TAF at year 2 (TDF2y → TAF6y) or year 3 (TDF3y → TAF5y), respectively. At year 8, among patients in the TAF8y, TDF2y → TAF6y and TDF3y → TAF5y groups, 69%, 66% and 73% (missing-equals-failure analysis) and 95%, 94% and 97% (missing-equals-excluded) of patients, respectively, achieved HBV DNA <29 IU/mL. Estimated glomerular filtration rate (Cockcroft-Gault method; eGFRCG) and hip/spine bone mineral density (BMD) remained stable in patients receiving double-blind/OL TAF, with only small declines at year 8. Decreases in eGFRCG and hip/spine BMD observed during double-blind TDF improved after switching to OL TAF. No patients developed resistance to TAF. Conclusion: Long-term TAF treatment exhibited favourable safety and tolerability with high rates of viral suppression and no development of resistance. ClinicalTrials.gov numbers NCT01940341 and NCT01940471. © 2024 The Author(s). Alimentary Pharmacology & Therapeutics published by John Wiley & Sons Ltd. |
| ISSN | APTHE |
| Volume | |
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