Distribution of mEPHX, GST M1, and GST T1 genotypes in combination
| Frequency of putative slow phenotype for mEPHX4-150 | ||
| Both slow genotype | Others | |
| Control (n = 76) | 29 (38%) | 47 (62%) |
| COPD (n = 83) | 23 (28%) | 60 (72%) |
| OR (95% CI) | 1.0 | 0.74 (0.38 to 1.45) |
| OR (95% CI), smoking adjusted | 1.0 | 0.70 (0.33 to 1.48) |
| Frequency of null genotypes in both GSTM1 and T1 genes | ||
| Both null genotype | Others | |
| Control (n = 76) | 29 (38%) | 47 (62%) |
| COPD (n = 83) | 28 (34%) | 55 (66%) |
| OR (95% CI) | 1.0 | 0.83 (0.43 to 1.58) |
| OR (95% CI), smoking adjusted | 1.0 | 1.04 (0.51 to 2.12) |
| Frequency of putative slow phenotype of mEPHX and both null genotype of GST M1 and T14-151 | ||
| Putative slow phenotype (mEPHX) two null (GST) genotypes | Others | |
| Control (n = 76) | 8 (11%) | 68 (89%) |
| COPD (n = 83) | 9 (11%) | 74 (89%) |
| OR (95% CI) | 1.0 | 1.03 (0.38 to 2.84) |
| OR (95% CI), smoking adjusted | 1.0 | 1.28 (0.44 to 3.67) |