Table 1

Information on metabolic gene polymorphisms in the database by ethnic group

GeneEthnicityNo. of studiesNo. of subjects
CYP1A1 Caucasian335434
Asian91144
African5505
CYP2E1 Caucasian161966
Asian5719
African240
GSTM1 Caucasian5010514
Asian111511
African7479
GSTT1 Caucasian295577
Asian3575
African389
GSTP1 Caucasian132282
Asian1243
African182
NAT2 Caucasian213979
Asian136
African17
EH Caucasian5922
Asian1123
African121
CYP2D6 Caucasian203530
Asian0
African2272