Background: Immunosuppressive therapy still is the standard treatment for patients with connective tissue disease-associated interstitial lung disease (CTD-ILD).
Objectives: This retrospective study aimed to provide data on the tolerability and efficacy of azathioprine in progressive CTD-ILDs.
Methods: A total of 56 patients with CTD-ILD treated with azathioprine between 2003 and 2014 were included in the study.