Safety and Effectiveness of Pirfenidone Combined with Carboplatin-based Chemotherapy in Patients with Idiopathic Pulmonary Fibrosis and Non-small Cell Lung Cancer: A Retrospective Cohort Study
Overview
Pulmonary Medicine
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Background: Pirfenidone is an antifibrotic agent that is potentially effective for the treatment of idiopathic pulmonary fibrosis (IPF). However, no study has reported on its prophylactic value against chemotherapy-associated acute IPF exacerbations when combined with chemotherapy for non-small cell lung cancer (NSCLC). The present study assessed the safety and effectiveness of pirfenidone combined with carboplatin-based chemotherapy or immune checkpoint inhibitors (ICIs) in patients with IPF and NSCLC.
Methods: A total of 14 patients with IPF and NSCLC who received treatment from 2013 to 2019 were included. Patients were treated with pirfenidone combined with carboplatin and nanoparticle albumin-bound paclitaxel or S-1 as first-line chemotherapy. After confirming disease progression, patients received cytotoxic agents or ICIs, including nivolumab and pembrolizumab. Pirfenidone was continued regardless of chemotherapy changes. Overall survival (OS) and progression-free survival (PFS) for lung cancer and IPF were calculated. Moreover, the cumulative incidence of acute exacerbation of IPF (AE-IPF) within one year was evaluated.
Results: Median PFS for lung cancer was 110 days (95% confidence interval [CI]: 57-199 days), while the median OS was 362 days (95% CI: 220-526 days). Moreover, PFS for IPF was 447 days (95% CI: 286-indeterminate days), and the cumulative incidence of AE-IPF within one year was 18%. Notably, none of the patients developed AE-IPF associated with first-line chemotherapy. Among the included patients, four received ICIs, none of whom developed ICI-associated AE-IPF.
Conclusions: The present study found that pirfenidone combined with carboplatin-based regimens or ICIs might be safe first-line chemotherapy for patients with IPF and NSCLC.
Key Points: SIGNIFICANT FINDINGS OF THE STUDY: No patients with IPF and NSCLC who received pirfenidone in combination with first-line carboplatin-based chemotherapy or late-line ICIs developed acute IPF exacerbations. What this study adds Pirfenidone might have a prophylactic effect against chemotherapy-associated AE-IPF.
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