CD274 and hereditary leiomyomatosis and renal cell cancer: Positive PD-L1 was found in the majority of HLRCC subtype (31/53, 58.49% cases), Type 1 Papillary RCC (10/31, 32.2% cases), chromophobe RCC (7/20, 35% cases), hybrid tumors (3/9, 33.3% cases), TFE3 tumors (3/8, 37.5%), undifferentiated (3/5, 60%) and TFEB tumors (2/2, 100%).