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ObjectiveTo evaluate the risk of interstitial lung disease associated with poly (ADP-ribose) polymerase inhibitors (PARPi) and characterize its clinical features.MethodsWe systematically reviewed phase III randomized clinical trials of interstitial lung disease related to PARPi and calculated Peto odds ratios (ORs) with 95% confidence intervals (CIs). Pharmacovigilance studies were conducted by collecting cases of PARPi-related interstitial lung disease from the FDA Adverse Events Reporting System and assessing disproportionalities by reporting ORs and information components.ResultsA total of five randomized clinical trials involving 2980 patients were included. Although PARPi showed a tendency to increase the risk of interstitial lung disease compared with controls, this difference was not significant (Peto OR: 4.92; 95% CI: 0.92 to 26.35). A total of 170 cases of interstitial lung disease related to PARPi were included, with a median latency of 99 days. PARPi had a significantly increased reporting of interstitial lung disease (reporting OR: 2.86; 95% CI: 2.46 to 3.33; information component (IC): 1.49; 95% CI: 1.28 to 1.74). Our sensitivity analyses showed strong robustness of the disproportionalities between PARPi as a class, olaparib, and interstitial lung disease. Some 91.9% of patients experienced discontinuation, 51.6% achieved remission, and no deaths were reported.ConclusionOur pharmacovigilance study suggested increased reporting of interstitial lung disease related to PARPi particularly olaparib.