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. 2021 Sep 2;29(3):135–149. doi: 10.12793/tcp.2021.29.e14

Table 3. Phenotypes of clinically relevant DMET markers in Korean population (n = 1,012).

Gene* Related drugs Diplotype Phenotype Sample count (%)
CYP2C19 Amitriptyline, *1/*1 EM 372 (36.76)
clopidogrel, *1/*17 UM 9 (0.89)
citalopram, *17/*17 UM 1 (0.10)
voriconazole *1/*2A IM 363 (35.87)
*1/*2B IM 0 (0.00)
*1/*3 IM 106 (10.47)
*2A/*17 IM 9 (0.89)
*3/*17 IM 1 (0.10)
*2A/*2A PM 76 (7.51)
*2A/*2B PM 1 (0.10)
*2A/*3 PM 62 (6.13)
*3/*3 PM 12 (1.19)
CYP2C9 Celecoxib, *1/*1 EM NA (NA)
ibuprofen, *1/*2 PM 1 (0.10)
warfarin, *1/*5 PM 0 (0.00)
phenytoin *1/*11 PM 0 (0.00)
*1/*13 PM 5 (0.49)
CYP2C8 Ibuprofen, *1/*1 EM 1,011 (99.90)
rosiglitazone *1/*2 PM 0 (0.00)
*1/*3 PM 1 (0.10)
SLCO1B1 Simvastatin *1/*1 Normal activity 731 (72.23)
*1/*5 Intermediate activity 265 (26.19)
*5/*5 Low activity 16 (1.58)
VKORC1 Warfarin Ref/Ref Normal activity 14 (1.38)
Ref/c.-1639G>A Decreased warfarin dose 133 (13.14)
c.-1639G>A/c.-1639G>A Decreased warfarin dose 865 (85.47)
CYP4F2 Warfarin *1/*1 Normal function 473 (46.74)
*1/*3 Decreased function 434 (42.89)
*3/*3 Decreased function 105 (10.38)
CYP2B6 Efavirenz *1/*1 Normal NA (NA)
*4/*4 UM 58 (5.73)
*22/*22 UM 0 (0.00)
*4/*22 UM 6 (0.59)
*1/*4 RM 327 (32.31)
*1/*22 RM 5 (0.49)
CYP2D6 Amitriptyline, *1 or *2/*1 or *2 NM NA (NA)
atomoxetine, *1 or *2/*10 NM 416 (41.11)
codeine, *1 or *2/*41 NM 29 (2.87)
tamoxifene *10/*10 IM 291 (28.75)
*41/*41 IM 2 (0.20)
*10/*41 IM 18 (1.78)
*1 or *2/*8 IM 6 (0.59)
*4/*10 IM 7 (0.69)
*8/*10 IM 8 (0.79)
*8/*41 IM 0 (0.00)
*4/*4 PM 2 (0.20)
*4/*8 PM 0 (0.00)
UGT1A1 Atazanavir, *1/*1 EM NA (NA)
irinotecan *1/*6 EM 260 (25.69)
*1/*80 EM 180 (17.79)
*27/*27 + *80 EM 11 (1.09)
*27/*80 EM 6 (0.59)
*6/*6 PM 27 (2.67)
*6/*80 PM 38 (3.75)
*80/*80 PM 11 (1.09)
*27 + *80/*80 PM 1 (0.10)
*27/*27 + *80/*80 PM 1 (0.10)
*6 + *27 + *80 PM 5 (0.49)
*6 + *27/*27 + *80 PM 5 (0.49)
TPMT Azathioprine, *1/*1 Normal NA (NA)
mercaptopurine, *1/*3C IM 34 (3.36)
thioguanine
CYP3A5 Tacrolimus, *1/*3 EM 46 (4.55)
cyclosporine *3/*3 IM 348 (34.39)
*3/*6 PM 617 (60.97)
*3/*6 PM 1 (0.10)

DMET, Drug Metabolizing Enzyme and Transporter; NM, normal metabolizer; EM, extensive metabolizer; UM, ultrarapid metabolizer; RM, rapid metabolizer; IM, intermediate metabolizer; PM, poor metabolizer.

*These pharmacogenes are referred to in the ‘Clinical Pharmacogenetics Implementation Consortium Dosing Guideline’.