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Risk factors for immune checkpoint inhibitor-related pneumonitis in non-small cell lung cancer.
Risk factors for immune checkpoint inhibitor-related pneumonitis in non-small cell lung cancer. Translational lung cancer research Chao, Y., Zhou, J., Hsu, S., Ding, N., Li, J., Zhang, Y., Xu, X., Tang, X., Wei, T., Zhu, Z., Chu, Q., Neal, J. W., Wu, J. T., Song, Y., Hu, J. 2022; 11 (2): 295-306Abstract
Immune checkpoint inhibitors (ICIs) have led to dramatic improvements in survival a subset of patients with non-small cell lung cancer (NSCLC); however, they have been shown to cause life-threatening toxicity such as immune checkpoint inhibitor-related pneumonitis (CIP). Our previous studies have shown that chronic obstructive pulmonary disease (COPD) and circulating cytokines are associated with clinical outcomes in NSCLC patients receiving ICIs. However, the relationship between these factors and the development of CIP is unclear. In this study, we retrospectively assessed NSCLC patients receiving ICIs to identify CIP risk factors.This retrospective cohort study reviewed medical records of NSCLC patients receiving ICIs targeting programmed cell death 1 (PD-1) or its ligand PD-L1 between March 2017 and December 2020 at Zhongshan Hospital Fudan University. CIP was diagnosed by the treating investigator. Clinical characteristics and baseline plasma cytokines were collected. Logistic regression was used to compare clinical characteristics and circulating cytokine levels between patients with and without CIP to identify CIP risk factors.Of 164 NSCLC patients who received ICIs, CIP developed in 20 cases (12.2%). The presence of COPD [odds ratio (OR), 7.194; 95% confidence interval (CI): 1.130 to 45.798; P=0.037] and PD-L1 expression of =50% (OR, 7.184; 95% CI: 1.154 to 44.721; P=0.035) were independently associated with a higher incidence of CIP, whereas a higher baseline level of interleukin-8 (IL-8) was associated with a lower incidence of CIP (OR, 0.758; 95% CI: 0.587 to 0.978; P=0.033). The independent risk factors from final multivariate analysis were incorporated into a nomogram to predict the incidence of CIP. The nomogram model receiver operating characteristic (ROC) curve had a good predictive accuracy of 0.883 (95% CI: 0.806 to 0.959).Increased risk of CIP independently associated with history of COPD, tumor PD-L1 expression =50%, and low baseline IL-8 level. The nomogram may hold promise for CIP risk assessment in the administration of ICIs.
View details for DOI 10.21037/tlcr-22-72
View details for PubMedID 35280322
View details for PubMedCentralID PMC8902097