The impact of direct-acting antiviral agents on liver and kidney transplant costs and outcomes

Am J Transplant. 2018 Oct;18(10):2473-2482. doi: 10.1111/ajt.14895. Epub 2018 May 29.

Abstract

Direct-acting antiviral medications (DAAs) have revolutionized care for hepatitis C positive (HCV+) liver (LT) and kidney (KT) transplant recipients. Scientific Registry of Transplant Recipients registry data were integrated with national pharmaceutical claims (2007-2016) to identify HCV treatments before January 2014 (pre-DAA) and after (post-DAA), stratified by donor (D) and recipient (R) serostatus and payer. Pre-DAA, 18% of HCV+ LT recipients were treated within 3 years and without differences by donor serostatus or payer. Post-DAA, only 6% of D-/R+ recipients, 19.8% of D+/R+ recipients with public insurance, and 11.3% with private insurance were treated within 3 years (P < .0001). LT recipients treated for HCV pre-DAA experienced higher rates of graft loss (adjusted hazard ratio [aHR] 1.34 1.852.10 , P < .0001) and death (aHR 1.47 1.681.91 , P < .0001). Post-DAA, HCV treatment was not associated with death (aHR 0.34 0.671.32 , P = .25) or graft failure (aHR 0.32 0.641.26 , P = .20) in D+R+ LT recipients. Treatment increased in D+R+ KT recipients (5.5% pre-DAA vs 12.9% post-DAA), but did not differ by payer status. DAAs reduced the risk of death after D+/R+ KT by 57% (0.19 0.430.95 , P = .04) and graft loss by 46% (0.27 0.541.07 , P = .08). HCV treatment with DAAs appears to improve HCV+ LT and KT outcomes; however, access to these medications appears limited in both LT and KT recipients.

Keywords: clinical research/practice; economics; health services and outcomes research; infection and infectious agents - viral: hepatitis C; kidney (allograft) function/dysfunction; kidney transplantation/nephrology; liver allograft function/dysfunction; liver transplantation/hepatology; patient survival.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Antiviral Agents / therapeutic use*
  • Female
  • Follow-Up Studies
  • Graft Survival*
  • Hepacivirus / drug effects*
  • Hepatitis C / drug therapy*
  • Hepatitis C / virology
  • Humans
  • Kidney Transplantation / economics*
  • Kidney Transplantation / mortality
  • Liver Transplantation / economics*
  • Liver Transplantation / mortality
  • Male
  • Middle Aged
  • Prognosis
  • Registries
  • Retrospective Studies
  • Risk Factors
  • Survival Rate
  • Tissue Donors / supply & distribution
  • Transplant Recipients
  • Waiting Lists / mortality*
  • Young Adult

Substances

  • Antiviral Agents