PD-L1 expression status was available for 15 patients: eight patients (25.8%) had a combined positive score (CPS) and/or tumor proportion score (TPS) of at least 1% and were considered PD-L1-positive, while seven patients (22.6%) were PD-L1-negative according to these criteria (Supplementary Table 2). This evidence concerns the gene CD274 and neoplasm.