Survival and Early Death Within Three Months from the Start of Immune Checkpoint Inhibitors in Patients With Different Types of Cancer

Abstract

Background/Aim: Implementation of new anticancer treatments in rural healthcare might not always result in identical survival outcomes as those seen in the randomized trials leading to approval. Therefore, the survival of patients treated with immune checkpoint inhibitors (ICI) in Nordland county was analyzed. Patients and Methods: Retrospective analysis of 199 patients, mainly treated in adjuvant or palliative settings, e.g, for non-small cell lung cancer (NSCLC) or malignant melanoma (from 2018 to 2021). Overall survival and death within 3 months from start of ICI were evaluated. Results: All patients who received (neo)adjuvant treatment were alive at the time of this analysis. Median survival was not reached for patients treated with consolidation durvalumab for NSCLC. Twenty-five patients died within 3 months [none after (neo)adjuvant or consolidation ICI]. Among these 25 patients, none had performance status (PS) 0 and only 7 had PS 1. Among 13 patients aged ≥80 years, 5 (38%) died within 3 months. Four of five patients treated on an individual basis outside of generally accepted indications died within 3 months. Conclusion: The overall survival outcomes observed after limited follow-up appear satisfactory. Death within 3 months was typically caused by cancer progression and mostly related to reduced PS (≥2) and/or advanced age (≥80 years).