Cancer Risk via DNA Testing

The National Health Service is offering free testing for faults on the genes BRCA1 and BRCA2, which are associated with a higher risk of some forms of cancer, to anyone in England with at least one Jewish grandparent.

According to, whereas women in the general population have an 11.5% chance of developing breast cancer, for those with one (or more) Jewish grandparents, the chances are 65-79% with the BRCA1 mutation, and 61-77% with the BRCA2 mutation.

For men, chances of prostate cancer, which are 0.1% for men at large, rise to 21-35% for the BRCA2 mutation.

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