Tenofovir-induced Fanconi syndrome in a patient with chronic hepatitis B monoinfection

Ann Hepatol. 2016 Mar-Apr;15(2):273-6. doi: 10.5604/16652681.1193725.

Abstract

Tenofovir disoproxil fumarate (TDF) is a nucleotide reverse transcriptase inhibitor indicated for treatment of patients with chronic hepatitis B virus (CHB) and human immunodeficiency virus (HIV) infections. Despite the good safety profile of the drug, Fanconi syndrome is a possible adverse reaction of TDF treatment, especially in HIV-infected patients. Only a few cases have been reported in patients with CHB-monoinfections. This report presents a case of a 58-year-old man with mild HBeAg-negative CHB who was exposed to TDF and developed drug-induced Fanconi syndrome. Renal dysfunction reverted after TDF discontinuation and a switch to entecavir, and viral replication remained suppressed. A literature review yielded six additional cases of TDF-induced Fanconi syndrome, all with risk factors for renal dysfunction despite the patients having normal glomerular filtration rates. We discuss the overall risk for Fanconi syndrome in CHB-monoinfected patients exposed to TDF and the importance of careful monitoring of glomerular and tubular functions even when pre-existing kidney disease is not present.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Antiviral Agents / adverse effects*
  • Deprescriptions
  • Fanconi Syndrome / chemically induced*
  • Glomerular Filtration Rate
  • Guanine / analogs & derivatives
  • Guanine / therapeutic use
  • Hepatitis B, Chronic / drug therapy*
  • Humans
  • Male
  • Middle Aged
  • Recovery of Function
  • Tenofovir / adverse effects*

Substances

  • Antiviral Agents
  • entecavir
  • Guanine
  • Tenofovir