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Similar Risk of Renal Events Among Patients Treated With Tenofovir or Entecavir for Chronic Hepatitis B
Clinical Gastroenterology and Hepatology , 08/01/2012
Clinical Article
Gish RG et al. – Markers of renal function indicated that patients who received tenofovir were no more likely to have changes in renal function than patients treated with entecavir. History of transplant and pre–existing renal insufficiency were the only factors independently associated with increases in serum creatinine (SCr).
Methods- The authors performed a community–based, retrospective cohort study of 80 patients with CHB who received tenofovir, alone or in a combination regimen; they were matched for age and sex with 80 CHB patients who received only entecavir.
- Incidences of serum creatinine (SCr) increase ≥0.2 mg/dL and new SCr levels of 1.5, 2.0, or 2.5 mg/dL were assessed.
- Patients with an estimated glomerular filtration rate (eGFR) <60 mL/min, calculated using the Modification of Diet in Renal Disease or Cockcroft–Gault formula, or who had ≥20% decrease in eGFR were also recorded.
- More patients given entecavir had increases in SCr ≥2.5 mg/dL (1 vs 6; P=.053), whereas more patients given tenofovir had a new Cockcroft–Gault eGFR of <60 mL/min (15 vs 6; P=.022) and at least 1 dose adjustment (13 vs 4; P = .021).
- By multivariate analysis, the only significant factors associated with an increase in SCr were a history of organ transplantation (adjusted odds ratio, 6.740; 95% confidence interval, 1.799–28.250; P=.005) and pre–existing renal insufficiency (adjusted odds ratio, 10.960; 95% confidence interval, 2.419–48.850; P=.002).
- No factors, including therapy assignment, were associated with a new eGFR <60 mL/min.
