In high risk hyperbilirubinemia group, there is more incidence of wild type exon 1 with heterozygous UGT1A1*60 (GG/TG; 10–0%) and heterozygous UGT1A1*6 with heterozygous UGT1A1*60 (GA/TG; 3.3–0%) compared to low risk hyperbilirubinemia. Here, UGT1A1 is linked to Hyperbilirubinemia.