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GSTM1 polymorphism
| Allele | Frequency in Caucasian populations | Cancer risks |
|---|---|---|
| M1*A | 0.2 | Decreased risk of bladder and breast cancer |
| M1*B | 0.2 | Decreased risk ofpituitary adenomas |
| M1*0 | 0.59 | Increased risk of lung, colon, bladder, and post-menopausal breast cancer |
