These cases involved six diseases: Gilbert syndrome in 7 cases (12.5%), sodium taurocholate co-transporting polypeptide (NTCP) deficiency in 8 cases (14.2%), glucose-6-phosphate dehydrogenase (G6PD) deficiency in 4 cases (7.1%), a combination of Gilbert syndrome and G6PD deficiency in 5 cases (8.9%), citrin deficiency combined with G6PD deficiency in 1 case (1.8%), Dubin-Johnson syndrome combined with Rotor syndrome in 1 case (1.8%), NTCP deficiency combined with G6PD deficiency in 2 cases (3.6%), and NTCP deficiency combined with Gilbert syndrome in 1 case (1.8%). This evidence concerns the gene G6PD and Dubin-Johnson syndrome.