Table 5

Geographic distribution of metabolic gene alleles in Asian populations

GSTM1GSTT1CYP1A1*2A
Japan0.476 (639)a,b0.353 (167)b0.159 (330)
Korea0.521 (165)0.515 (165)NAc
Singapore0.562 (244)0.519 (243)NA
  • a Numbers in parentheses denote the number of subjects tested.

  • b Statistically significant difference (P < 0.05, by χ2 test) compared with the rest of the population combined.

  • c NA, not available.