Cancer risk tests could be routine in GP surgeries

In future, genetic variant results may make it possible to single out high-risk individuals using a simple saliva test.

They can then be monitored closely for the first signs of developing cancer or be offered preventative treatment.

Experts believe the cheap and easy tests could be conducted in family doctors' surgeries.

Samples would initially be sent off to laboratory specialists, but eventually GPs could be doing the analysis themselves.

The chip used in the analysis cost just £30, and although the study relied on blood samples the same tests can easily be carried out on saliva.

How genetic 'mistakes' could predict cancer

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Genetic cancer links revealed

A Cambridge University study has for the first time revealed links between genetic variations and breast, prostate and ovarian cancers.