4.7 Article

Tenofovir alafenamide is associated with improved alanine aminotransferase and renal safety compared to tenofovir disoproxil fumarate

期刊

JOURNAL OF MEDICAL VIROLOGY
卷 94, 期 9, 页码 4440-4448

出版社

WILEY
DOI: 10.1002/jmv.27863

关键词

alanine aminotransferase; chronic; chronic kidney disease; hepatitis B; tenofovir alafenamide; tenofovir disoproxil fumarate

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资金

  1. Gilead Sciences

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This study evaluated the impact of switching to TAF on ALT normalization and renal safety in CHB patients and described the indications for switching to TAF. The results showed that switching to TAF significantly reduced ALT levels and increased ALT normalization rate. TAF was found to be associated with improved ALT levels and better renal safety compared to TDF dominant therapy in CHB patients. The majority of CHB patients switched to TAF due to advanced age, followed by bone disease and renal alteration.
Tenofovir alafenamide (TAF) is a novel prodrug of tenofovir for the treatment of chronic hepatitis B (CHB) infection. We aimed to evaluate the impact of switching to TAF on alanine aminotransferase (ALT) normalization and renal safety. We also described the indications of switching to TAF. Consecutive adult CHB patients switched from tenofovir disoproxil fumarate (TDF) dominant therapy to TAF for more than 12 months were identified retrospectively. A subgroup of patients newly switched to TAF was prospectively invited to perform transient elastography examination and dual-energy X-ray absorptiometry. The time of switching to TAF was defined as baseline. Among 393 patients in the retrospective cohort, the median ALT at month 12 was significantly lower (21.0 [16.0-29.9] U/L vs. 25.0 [19.0-34.0] U/L; p < 0.001) and ALT normalization rate was higher (89.9% vs. 83.7%; p = 0.037) than those at baseline. Estimated glomerular filtration rate decreased from 12 months before baseline and then increased from baseline to month 12 significantly (69.7 +/- 22.0 ml/min/1.73 m(2) vs. 68.5 +/- 21.5 ml/min/1.73 m(2) vs. 69.2 +/- 21.5 ml/min/1.73 m(2), p = 0.002 (-12 m vs. baseline), p = 0.004 (baseline vs. 12 m)). In the prospective cohort, 103 patients switched to TAF because of age > 60 years (63.1%), bone diseases (54.4%), and renal alteration (42.7%). TAF is associated with ALT improvement and better renal safety than TDF dominant therapy in CHB patients. Most CHB patients switched to TAF because of advanced age, followed by bone disease and renal alteration.

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