Journal
CANCERS
Volume 13, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/cancers13061308
Keywords
neutrophil-to-lymphocyte ratio; immunotherapy; immune-related adverse events; survival
Categories
Funding
- Centre for Precision Health, National University Health System
- National Research Foundation, Singapore
- National Medical Research Council, Singapore [NMRC/CG/M005/2017_NCIS]
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In this case-control study, lower NLR (<3) was associated with increased occurrence of irAEs, while higher NLR values were correlated with worse clinical outcomes in cancer patients treated with immune checkpoint inhibitors.
Simple Summary In this case-control study, we aimed to investigate the relationships between neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) with the occurrence of immune-related adverse events (irAEs) and clinical outcomes in cancer patients who had received at least one dose of immune checkpoint inhibitor. The study included 91 patients with irAEs and 56 controls. Multiple logistic regression showed that NLR < 3 at baseline was associated with higher occurrence of irAEs but PLR was not associated with development of irAEs. Multivariate Cox regression showed that development of irAEs and reduction in NLR from baseline to week 6 were associated with longer progression-free survival. Higher NLR values at baseline and/or week 6 were independently associated with shorter overall survival (OS). A reduction in NLR from baseline to week 6 was associated with longer OS. The utility of neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) utility in predicting immune-related adverse events (irAEs) and survival have not been well studied in the context of treatment with immune checkpoint inhibitors (ICIs). We performed a case-control study of cancer patients who received at least one dose of ICI in a tertiary hospital. We examined NLR and PLR in irAE cases and controls. Logistic and Cox regression models were used to identify independent risk factors for irAEs, progression-free survival (PFS), and overall survival (OS). The study included 91 patients with irAEs and 56 controls. Multiple logistic regression showed that NLR < 3 at baseline was associated with higher occurrence of irAEs. Multivariate Cox regression showed that development of irAEs and reduction in NLR from baseline to week 6 were associated with longer PFS. Higher NLR values at baseline and/or week 6 were independently associated with shorter OS. A reduction in NLR from baseline to week 6 was associated with longer OS. In this study of cancer patients treated with ICIs, NLR has a bidirectional relationship with adverse outcomes. Lower NLR was associated with increased occurrence of irAEs while higher NLR values were associated with worse clinical outcomes.
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