The use of immunotherapy in older patients with advanced non-small cell lung cancer.

Immune checkpoint blockers (ICBs) have a pivotal role in the management of non-small cell lung cancer (NSCLC), both as single agent and in combination strategies, providing a meaningful clinical and survival benefit. Older patients are underrepresented in clinical trials, including those involving immunotherapy, even though almost half of the patients with newly diagnosed NSCLC are aged 70 years or older. Moreover, due to selection biases, usually "fit" patients are preferably enrolled. This results in a lack of evidence regarding the use of ICBs in the older population, particularly when referring to chemo-immunotherapy regimens. Since ICBs are indeed of paramount importance in the treatment of patients with NSCLC, efforts are needed to optimize their use also in the older population. This entails furthermore taking into account additional features including the degree of fitness of the patient and the different health domains that can be affected by aging. This review aims to delve into the current evidences about the efficacy and toxicity of ICBs in monotherapy and in combination in older patients with advanced NSCLC, the role of the comprehensive geriatric assessment in supporting the selection of patients receiving immunotherapy, as well as the value of immunosenescence in modulating the activity of these drugs.

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