Ivacaftor-elexacaftor-tezacaftor and tacrolimus combination in cystic fibrosis

Academic Article


  • The CFTR modulator combination elexacaftor/tezacaftor/ivacaftor (ETI) is a genetic mutation-targeted treatment in cystic fibrosis that results in profound improvements in clinical outcomes. Each of the compounds are substrates of CYP3A4/5, the cytochrome P450 enzyme family for which tacrolimus is also a substrate. The use of these compounds in an individual with a solid organ transplant has not been previously studied and there is potential for a drug interaction. In this report, we describe a pediatric liver transplant recipient with clinical decline related to cystic fibrosis who improved substantially with ETI, without significant impact on the systemic exposure of either ETI or tacrolimus.
  • Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 21683888
  • Author List

  • Smith M; Ryan KJ; Gutierrez H; Sanchez LHG; Anderson JN; Acosta EP; Benner KW; Guimbellot JS
  • Start Page

  • e8
  • End Page

  • e10
  • Volume

  • 21
  • Issue

  • 1