Twenty-four previously unknown mutations that raise a woman's risk of developing breast cancer h

Twenty-four previously unknown mutations that raise a woman's risk of developing breast cancer have been identified by scientists.

The 'ground-breaking' findings today provide an answer to thousands of victims of whom the disease runs in their family.

Mutations in known breast cancer genes are identified in only 20 per cent of women offered genetic testing for familial breast cancer.

But Australian scientists believe the new discovery 'unlocks a big part of the puzzle' and argue they should be looked for in tests.

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Written by STEPHEN MATTHEWS FOR MAILONLINE

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