In the histological-grade-related differences, the higher grade tumor had significantly higher LCK protein levels than the lower grade tumor in STAD, kidney renal clear cell carcinoma (KIRC), liver hepatocellular carcinoma (LIHC), and BLCA; and the higher grade tumor had significantly lower CD20 protein levels in the ovarian serous cystadenocarcinoma (OV) and BLCA but significantly higher CD20 levels in STAD (Figure S11). Here, LCK is linked to gastric adenocarcinoma.