Aims The aim of the study is to describe the use of immune checkpoint inhibitors (ICIs) for the treatment of cancer in Scotland. Methods The retrospective observational cohort study included patients aged 18 years or older who commenced treatment with an ICI in Scotland between 1 January 2018 and 31 December 2024. The National Systemic Anti‐Cancer Therapy (SACT) dataset was used to identify patients and obtain details on ICI treatments and patient characteristics. Additional data sources providing information on comorbidities were linked deterministically via a unique patient identifier. All analyses were descriptive. Results In total, 10 394 patients in Scotland initiated their first ICI treatment between 2018 and 2024; the number of patients initiating ICIs increased substantially year‐on‐year, from 764 patients in 2018 to 2233 patients in 2024. The most commonly prescribed ICI was pembrolizumab (56.8%, n = 5908), followed by nivolumab (16.4%, n = 1700) and atezolizumab (11.3%, n = 1170); treatment was most commonly initiated for lung and chest cancers (44.1%, n = 4585), skin cancer (18.8%, n = 1955) and urological cancers (14.8%, n = 1539). While the majority of patients (66.6%, n = 6923) initiated ICI monotherapy, combination therapies—most commonly ICI with chemotherapy (18.4%, n = 1910)—were also used. Overall, 6.6% of patients ( n = 681) were on treatment for more than 2 years. Conclusions With the continuous addition of new ICIs, alongside the ever‐expanding list of approved indications for their use, the observed increase in ICI use is expected to continue. This increasing use of ICIs may pose challenges to health services—for instance, an increase in immune‐related adverse effects—with potential implications for clinical practice and future research.
Mueller et al. (Mon,) studied this question.