Circulating IFN-λ3 concentrations, anti-HBs titres, prevalence of nonresponders to HBV vaccination, and prevalence of subjects with anti-HBs titre ≥ 1000 IU/L among subgroups of HD patients stratified by HBV/HCV seromarkers and in healthy subjects are shown in Table 1. The gene discussed is IFNL3; the disease is Huntington disease.