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. 2020 Sep 16;13(6):1023–1033. doi: 10.1111/cts.12866

Table 2.

UGT1A1 phenotype inference based on genotype information

UGT1A1
Normal metabolizers
*1/*1, *1/*36, *36/*36 2 reference function (*1/*1) and/or increased function allele (*36)
rs887829 C/C rs887829 C/C homozygosity
Intermediate metabolizers
*1/*28, *1/*37, *36/*28, *36/*37 1 reference function (*1) or increased function allele (*36) and 1 decreased function allele (*6, *28, *37)
rs887829 C/T (*1/*80) rs887829 C/T heterozygosity
Poor metabolizers
*28/*28, *28/*37, *37/*37, *6/*6 2 decreased function alleles (*6, *28, *37).
rs887829 T/T (*80/*80) rs887829 T/T homozygosity

Information obtained from Clinical Pharmacogenetics Implementation Consortium (CPIC) guideline on atazanavir and UGT1A1. 73

UGT1A1, UDP glucuronosyltransferase family 1 member A1.