UGT1A1 and Hyperbilirubinemia: Among more than 100 mutation types of UGT1A1, the G to A variation at the nucleotide 211 of the UGT1A1 (UGT1A1*6, c.211G > A, p.Arg71Gly, rs4148323) is the most frequent mutation in the Asian cohort, contributes to hyperbilirubinemia in Asian neonates [11].