Further, among these 38 OBI-positive patients, the presence of both anti-HBs and anti-HBc were noted in 8 (~21%) patients; isolated anti-HBc was identified in 7 (18%), anti-HBs alone in 5 (13%) while 18 (47%) patients had no evidence of prior HBV exposure or remote infection (anti-HBs−/anti-HBc−) (Table 1). This evidence concerns the gene KRT88P and infection.