HOXD13 and hepatocellular carcinoma: A similar result was observed for male (vs. Q1: ORs were 1.25 [95% CI = 0.87–1.80] in Q2, 1.53 [95% CI = 1.09–2.16] in Q3, and 2.37 [95% CI = 1.70–3.30] in Q4, respectively) but not female case patients with existing HBV-related HCC in the case-control analysis, in which male cases had significantly higher median levels of sPD-1 than female cases (443.3 vs. 307.3 pg/mL) (p = 0.0074).