Only 4.6% (21/453) of the patients had tumours with PD-L1 expression on both Mφs and TCs (Pattern 4: M+T+), while 10.6% (48/453; Pattern 2: M+T–) and 14.6% (66/453; Pattern 3: M–T+) of patients had PD-L1 expression only on Mφs or TCs, respectively (Fig. 2b). Here, CD274 is linked to neoplasm.