Abstract

Lung transplantation (LT) is an effective treatment for patients with interstitial lung disease (ILD) refractory to medical treatment. Although the cases of cadaveric LT (CLT) have increased, the donor shortage in Japan has remained severe. This study aimed to evaluate the International Society of Heart and Lung Transplantation (ISHLT) listing criteria for LT in patients with ILD by predicting outcomes during the waiting time for CLT. We retrospectively identified 166 patients with fibrotic ILDs who were evaluated and registered for CLT at Kyoto Universal Hospital from April 1, 2008, to December 31, 2017. We examined the correlation between individual parameters of the ISHLT listing criteria and patient outcomes. Among 166 patients, 57 (34.3%) underwent CLT, whereas 83 (50.0%) died before CLT. The median survival time from the date of registration was 22.5months. The 2-year survival rate was 47.8%. On multivariate Cox proportional hazards analysis, relative decline of percent predicted forced vital capacity (%FVC) in 6months ≥ 10% (hazard ratio [HR]: 1.72; 95% confidence interval [95%CI]: 1.03-2.87, p = 0.04) and 6-min walking distance (6MWD) < 250m (HR: 2.77; 95%CI: 1.64-4.69, p < 0.001) were independently associated with worse outcome (i.e., death or living-donor lobar LT). The 2014 ISHLT criteria could appropriately identify patients with ILD who have a potentially poor prognosis. In particular, 6-month decline in %FVC and shorter 6min walk distance may be useful for selecting patients with higher risks of mortality.

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