Table 2 SNPs and their allele frequencies in NAT2, CYP1A1, and CYP1A2
| Â | SNP rs # | Amino acid change | Major/minor allele | Major allele frequency in control group |
|---|---|---|---|---|
NAT2 | ||||
 NAT2*5 | rs1801280 | Ile114Thr | T/C | 0.986 |
 NAT2*6 | rs1799930 | Arg197Gln | G/A | 0.96 |
 NAT2*7 | rs1799931 | Gly286Glu | G/A | 0.641 |
 NAT2*13 | rs1208 | Lys268Arg | A/G | 0.826 |
CYP1A1 | rs1048943 | Ile462Val | A/G | 0.661 |
CYP1A2 | rs762551 | 5′-UTR | A/C | 0.379 |