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Over 80 percent unaware of having cancer risk genes

In the study, published in the journal JAMA Network Open, the mean age of participants was 60. 

India TV Lifestyle Desk Edited by: India TV Lifestyle Desk New Delhi Published on: September 24, 2018 15:57 IST
It is mainly due to absence of routine screening

It is mainly due to absence of routine screening

In a study conducted on over 50,000 people, it has been found that due to the absence of routine screening, more than 80 percent of people are unaware of their genetic risk for cancers of the breast, ovarian, prostate and pancreas. Most people only discover they carry cancer-associated variants in the BRCA1 or BRCA2 genes when that person or family members receive a cancer diagnosis, stated the findings.

"It usually takes a tragedy for people to get tested," said Michael Murray, professor at Yale University in the US.

"Our reliance on a documented personal or family history as a trigger to offer testing is not working. Hopefully, one day we can change that with effective DNA-based screening for everyone," he added.

In the study, published in the journal JAMA Network Open, the mean age of participants was 60. 

Two hundred and sixty-seven of those screened possessed a BRCA risk variant, yet only 18 per cent of them were aware they possessed this risk factor for cancer prior to being informed.

Among the group of living BRCA-positive patients, 16.8 per cent of them had a BRCA-associated cancer. In the small group of BRCA-positive patients who had died before the study's ended, 47.8 per cent of them had a BRCA-associated cancer.

"Once risk is identified, we can apply proven tools for early diagnosis and prevention, and we believe that the 31 per cent difference in cancer incidence in these two groups is a window into an opportunity to decrease cancer and cancer deaths through genomic screening approaches," Murray said.

(With IANS inputs)

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