In patients with sufficient tissue for PD-L1 testing, tumor PD-L1 expression was 0%, 1% to 49%, and 50% or greater in 58% (n = 15 of 26), 23% (n = six of 26), and 19% (n = five of 26) of cases, respectively (Fig 1A). This evidence concerns the gene CD274 and neoplasm.