For diagnosing S ≥ 2 liver fibrosis, the AUROCs indicated that the predictive value of FcγRIIb levels was 0.95 (95% CI 0.77–1.00), the sensitivity was 0.89, and the specificity was 1.00 (Fig. 6). The gene discussed is FCGR2B; the disease is Hepatic fibrosis.