CD8A and hepatocellular carcinoma: Among them, 19 miRNAs displayed significant positive expression correlations with both CD8+ T cell enrichment and cytolytic activity in HCC, including hsa-miR-6731-5p, 625-5p, 511-5p, 4772-5p, 1976, 181a-3p, 342-5p, 342-3p, 4491, 150-3p, 146a-5p, 625-3p, 155-3p, 4772-3p, 150-5p, 142-3p, 142-5p, 7702, 155-5p.