Immune checkpoint inhibitors in elderly patients treated for a lung cancer: a narrative review
2021
This article is a review of the literature concerning efficacy and safety of immune checkpoint inhibitors (ICIs) in the elderly population. In the past decade, immunotherapy deeply changed the treatment paradigm of lung cancer in particular in advanced non-small cell lung cancer (aNSCLC). Thus, ICIs have successively demonstrated a survival benefit as single agent in second line, and moved in first line as monotherapy for patients with high programmed death protein 1 (PD-L1) expression or in combination with chemotherapy regardless PD-L1 expression. If patients aged 70 years or older represent up to half of our patients in clinical routine, elderly population is significantly under-represented in clinical trials. This leads to a lack of knowledge concerning efficacy and safety of ICIs in a population of patients with frequent comorbidities, organs dysfunctions and a potential immune-senescence due to age. In this review, we described available data evaluating efficacy and safety of ICI either as monotherapy or in combination in elderly population treated for a lung cancer. These data derived from clinical trial evaluating ICIs in aNSCLC as single agent or in combination with chemotherapy or anti-cytotoxic T-lymphocyte antigen 4 (CTLA-4). As monotherapy, older patients seem to derive the same benefit from ICIs than younger patients with no excess of toxicities. In combination with chemotherapy, real impact of ICIs in elderly population is still unclear. Results of dedicated studies evaluating ICIs as single agent or in combination in elderly patients are needed.
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