Table III.
Distribution of CYP1A2, NAT1, and NAT2 genotypes*
| Genotype | Cases n (%) | Controls n (%) |
|---|---|---|
| CYP1A2*1D | ||
| TT | 166 (54) | 166 (50) |
| T/delT | 107 (35) | 127 (39) |
| delT/delT | 34 (11) | 36 (11) |
| Total | 307 | 329 |
| delT allele frequency | 0.29 | 0.31 |
| CYP1A2*1F | ||
| AA | 129 (42) | 162 (49) |
| AC | 146 (48) | 139 (41) |
| CC | 32 (10) | 32 (10) |
| Total | 307 | 333 |
| C allele frequency | 0.34 | 0.31 |
| NAT1 | ||
| Reference | 182 (60) | 213 (66) |
| Rapid | 117 (38) | 100 (31) |
| Slow | 5 (2) | 9 (3) |
| Total | 304 | 322 |
| NAT2 | ||
| Rapid | 17 (6) | 27 (9) |
| Intermediate | 97 (35) | 105 (33) |
| Slow | 167 (59) | 185 (58) |
| Total | 281 | 317 |
*
P values from χ2 test for genotype frequencies between cases and controls were all greater than 0.05.