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The Boston Globe

Science

Study doubles genetic factors linked to cancers

A massive collaboration between cancer researchers at more than 160 institutions worldwide has nearly doubled the number of genetic regions known to be associated with three major cancers: breast, ovarian, and prostate.

Individually, each of the 74 new genetic risk factors identified has very little predictive power, each increasing a person’s cancer risk by a tiny amount. Collectively, however, the results reported in 13 papers published Wednesday represent a major step.

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