UGT1A1 and Jaundice: Extreme hyperbilirubinemia and death were accounted for a G6PD heterozygous female neonate who was also a heterozygote due to (TA)6/(TA)7 promoter polymorphism for uridine diphosphate glucuronosyltransferase 1A1*28 (UGT1A1*28) [13], which is generally not a risk factor for neonatal jaundice or kernicterus [29–31].