Twenty-five (25/38, 65.8%) of 38 cases of HCC with a tumor size < 5 cm presented with high MIM-B expression, while 24 (24/46, 52.2%) of 46 cases of HCC with a tumor size ≥ 5 cm presented with high MIM-B expression. Here, MTSS1 is linked to hepatocellular carcinoma.