Diagnostic chest radiation before age 30 may increase breast cancer risk in BRCA1/2 mutation carriers

Women carrying a mutation in the BRCA1 or BRCA2 genes (which control the suppression of breast and ovarian cancer) who have undergone diagnostic radiation to the chest before the age of 30 are more likely to develop breast cancer than those who carry the gene mutation but who have not been exposed, a new study reveals.

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