Lung Transplant Outcomes in Patients With Pulmonary Fibrosis With Telomere-Related Gene Variants.

Published

Conference Paper

BACKGROUND: Pulmonary fibrosis (PF) is the most common disease indication for lung transplantation. Our recent work implicated an excess of rare genetic variants in the telomere-related genes TERT, RTEL1, and PARN in PF disease risk. The impact of such variants on posttransplant outcomes is uncertain. The objective of this study was to determine if patients with these PF-associated variants have altered rates of posttransplant acute rejection (AR), chronic lung allograft dysfunction (CLAD), and survival. METHODS: The study cohort consisted of 262 PF lung transplant recipients previously genetically characterized by whole exome sequencing. Thirty-one patients (11.8%) had variants in TERT, RTEL1, or PARN, whereas 231 (88.2%) did not. Multivariate Cox proportional hazards models adjusted for relevant clinical variables were used to assess the outcomes of death and CLAD. The AR burden was quantified and compared over the first posttransplant year. RESULTS: Patients with PF with disease-associated variants in TERT, RTEL1, or PARN had a significantly higher risk of death (adjusted hazard ratio [HR], 1.82; 95% CI, 1.07-3.08; P = .03) and CLAD (adjusted HR, 2.88; 95% CI, 1.42-5.87; P = .004) than patients without these variants. There was no difference in AR burden or rates of grade 3 primary graft dysfunction between the two groups. CONCLUSIONS: Rare variants in the telomere-related genes TERT, RTEL1, or PARN are associated with poor posttransplant outcomes among PF lung transplant recipients. Further research is needed to understand the biological mechanisms by which telomere-related variants increase the risk for death and CLAD.

Full Text

Duke Authors

Cited Authors

  • Swaminathan, AC; Neely, ML; Frankel, CW; Kelly, FL; Petrovski, S; Durheim, MT; Bush, E; Snyder, L; Goldstein, DB; Todd, JL; Palmer, SM

Published Date

  • September 2019

Published In

Volume / Issue

  • 156 / 3

Start / End Page

  • 477 - 485

PubMed ID

  • 30978332

Pubmed Central ID

  • 30978332

Electronic International Standard Serial Number (EISSN)

  • 1931-3543

Digital Object Identifier (DOI)

  • 10.1016/j.chest.2019.03.030

Conference Location

  • United States