Supplementary Material for: Nintedanib in IPF: Post hoc Analysis of the Italian FIBRONET Observational Study

<b><i>Background:</i></b> The FIBRONET study was an observational study of patients with idiopathic pulmonary fibrosis (IPF) in Italy. <b><i>Objectives:</i></b> In this post hoc descriptive analysis, we describe changes in lung function, anxiety/depression, coughing, exacerbations, and adverse events (AEs) in patients receiving nintedanib treatment. <b><i>Methods:</i></b> Patients with IPF from 20 centers in Italy, aged ≥40 years who received nintedanib for ≥7 months, were followed up for 12 months from study enrollment, attending clinic visits every 3 months. Outcomes included change in forced vital capacity (FVC)% predicted from baseline to 12 months, anxiety/depression measured by the Hospital Anxiety and Depression Scale (HADS), and the proportion of patients with cough, AEs, and exacerbations. <b><i>Results:</i></b> In total, 52 patients received nintedanib (mean duration of 11.6 months). Ten patients had dose reductions from 150 mg to 100 mg twice daily, due to AEs. FVC% predicted was unchanged in the overall nintedanib population (78.7% at baseline; 79.8% at 12 months) and those with a reduced dose (77.7% at baseline; 81.0% at 12 months). HADS score was low at baseline and throughout the study. The proportion of patients with cough decreased from 50.0% to 21.2% over 12 months. Two patients experienced exacerbations, 2 patients discontinued treatment, and 27 (51.9%) reported AEs. The most common AE was diarrhea (34.6%). <b><i>Conclusions:</i></b> In patients with IPF who received nintedanib in the FIBRONET study, FVC% predicted was stable over 12 months, and the proportion of patients with cough decreased. The safety profile was consistent with the known safety profile for nintedanib in IPF.