CD4 and hepatocellular carcinoma: We further verified these results with TIMER and found that high ABL1 expression was positively correlated with B cells (r = 0.285, P=7.25e − 08), CD8 cells (r = 0.212, P=7.68e − 06), CD4+ cells (r = 0.496, P=8.43e − 23), macrophages (r = 0.46, P=3.24e − 19), neutrophils (r = 0.488, P=4.32e − 22), and dendritic cells (r = 0.394, P=4.35e − 14) in HCC.