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Introduction: Chemoimmunotherapy is widely used as the first‐line management of advanced non‐small cell lung cancer (NSCLC) in clinical settings. However, predictive factors associated with the development of immune‐related adverse events (irAEs) and prognostic factors for NSCLC patients undergoing chemoimmunotherapy remains largely unexplored. Therefore, in this study, we aimed to evaluate predictive factors for irAE development and prognostic factors associated with chemoimmunotherapy in NSCLC patients. Methods: This study enrolled 199 patients with advanced and recurrent NSCLC who underwent chemoimmunotherapy across eight institutions in Nagano prefecture from December 2018 to January 2023. We examined predictive factors associated with irAE development and prognostic factors associated with overall survival (OS). Results: Among the patients, 106 experienced irAEs, while 93 patients did not. A total of 44 (22.1%) patients developed multiple irAEs. High serum albumin levels (Alb >3.5 g/dL) emerged as an independent predictive factor associated with irAE development in logistic regression analysis (odds ratio; 2.35, 95% confidence interval 1.27–4.34, p = 0.007). Furthermore, the development of multiple irAEs (p = 0.016), lower lactate dehydrogenase level (<223 U/L, p = 0.002), and decreased neutrophil‐to‐lymphocyte ratio (<3, p = 0.049) were identified as independent favorable prognostic factors associated with OS in multivariate Cox hazard analyses. Conclusion: The study results suggest that high serum Alb is a predictive factor for irAE development and that the presence of multiple irAEs is a favorable prognostic indicator for NSCLC patients undergoing chemoimmunotherapy. [ABSTRACT FROM AUTHOR]

Background: Combination immunotherapy (immune checkpoint inhibitors and cytotoxic anticancer agents) is widely used as first‐line treatment for advanced non‐small cell lung cancer (NSCLC). However, the therapeutic effect of combination immunotherapy has not been fully investigated. C‐reactive protein, performance status, lactate dehydrogenase, albumin, and derived neutrophil‐to‐lymphocyte ratio (C‐PLAN) are useful biomarkers for predicting the prognosis of NSCLC; however, there are no reports examining the C‐PLAN index, which combines these five factors in a single prognostic factor. Methods: We retrospectively collected data from 178 patients with previously untreated advanced NSCLC who received combination immunotherapy at multicenter institutions in Nagano Prefecture between December 2018 and April 2022. We investigated the utility of the C‐PLAN index as a prognostic factor using Cox regression analysis and correlated it with survival. Results: The good and poor C‐PLAN index groups included 85 and 93 patients, respectively. The good C‐PLAN index group had a longer median progression‐free survival (PFS) (10.7 vs. 6.0 months; p = 0.022) and overall survival (OS) (25.3 vs. 16.5 months; p = 0.003) than the poor C‐PLAN index group. The C‐PLAN index was an independent favorable prognostic factor that correlated with PFS and OS in multivariate analysis. The good C‐PLAN index group had a higher proportion of never‐smokers (16.5 vs. 4.3%; p = 0.007) and stage III disease/postoperative recurrence (32.9 vs. 15.1%; p = 0.005) than the poor C‐PLAN index group. Conclusion: The C‐PLAN index is a useful prognostic factor for patients with previously untreated advanced NSCLC undergoing combination immunotherapy. [ABSTRACT FROM AUTHOR]

Background: The geriatric nutritional risk index (GNRI) is a simple and useful marker for predicting prognosis and treatment efficacy among patients with various cancers. However, to the best of our knowledge, there are no previous reports regarding the prognostic value of GNRI among patients with non‐small cell lung cancer (NSCLC) who were treated with immune checkpoint inhibitors (ICIs). Methods: We retrospectively evaluated 85 patients with previously treated advanced NSCLC who were administered ICIs at Shinshu University Hospital between February 2016 and October 2020. Progression‐free survival (PFS) and overall survival (OS) were compared between groups with high (≥89.5) and low (<89.5) GNRI values. We used univariate and multivariate Cox regression analyses to identify prognostic factors that were associated with PFS and OS. Results: The high and low GNRI groups included 61 and 24 patients, respectively. Relative to the low GNRI group, the high GNRI group had significantly longer median PFS (3.7 vs. 2.4 months, p = 0.041) and significantly longer median OS (14.2 vs. 6.1 months, p = 0.008). Multivariate analyses revealed that independent predictors of favorable OS were high GNRI, performance status of 0–1, and age of ≥70 years. The high GNRI group was significantly more likely to undergo subsequent therapy after immunotherapy (68.6 vs. 33.3%, p = 0.008). Conclusions: The present study revealed that high GNRI was associated with good outcomes among patients with previously treated NSCLC who were treated with ICIs. [ABSTRACT FROM AUTHOR]

Purpose: The development of immune-related adverse events (irAEs) in patients undergoing immunotherapy has been reported to be a favorable prognostic factor in several studies. We aimed to examine the correlation between irAEs and prognosis in patients with non-small cell lung cancer (NSCLC) and further reveal the patient characteristics associated with response to immunotherapy among treatment responders who developed irAEs. Methods: We retrospectively enrolled 80 patients with NSCLC who received immunotherapy at Shinshu University Hospital between February 2016 and February 2020. Progression-free survival (PFS) and overall survival (OS) were compared between patients with and those without irAEs. We examined the prognostic factors associated with PFS and OS using univariate and multivariate Cox proportional-hazards models. We further analyzed the patients who developed irAEs by classifying them into responders and non-responders. Results: Twenty-five patients developed irAEs. The median PFS and OS of the patients with irAEs were significantly longer than those of the patients without irAEs (6.8 vs. 1.9 months, p < 0.001, and 37.8 vs. 8.1 months, p < 0.001, respectively). Multivariate analysis associated with PFS and OS indicated that the development of irAEs was an independent favorable prognostic factor. Among the patients developing irAEs, the responder group had a significantly higher incidence of multiple irAEs than the non-responder group (41.7 vs. 0.0%, p = 0.009). Conclusion: Our findings revealed that the development of irAEs was associated with clinical benefits in NSCLC patients who received immunotherapy. In particular, patients with multiple irAEs might have good prognoses. [ABSTRACT FROM AUTHOR]

Pembrolizumab is an anti-programmed cell death protein-1 antibody that is mainly used for the treatment of non-small cell lung cancer (NSCLC). Immune-related adverse events can be caused by immune checkpoint inhibitors; however, few case reports evaluate the prognosis of patients with NSCLC with late-onset immune-related adverse events. In this case, a 63-year-old man with stage IVA lung adenocarcinoma received pembrolizumab as first-line therapy and achieved a complete response. The patient developed hypothyroidism and skin toxicity owing to pembrolizumab over the course of treatment; however, the patient continued with pembrolizumab. The patient discontinued pembrolizumab after 20 cycles owing to appetite loss from 14 months after the initiation of pembrolizumab. Two months later, the symptoms worsened and the patient was taken to hospital by an ambulance owing to movement difficulty. The patient was diagnosed with acute adrenal insufficiency by endocrinological examinations. The condition of the patient improved after hydrocortisone treatment. Sixteen months have passed without the readministration of pembrolizumab and no recurrence of lung adenocarcinoma has been observed. Late-onset, severe, and diverse immune-related adverse events may be a favorable prognostic factor associated with survival. [ABSTRACT FROM AUTHOR]