New mutation behind breast cancer identified

Washington, Feb 23 (ANI): Scientists have discovered a new gene that may increase the risk of breast cancer.

In the study from Finland, mutations in this gene, called Abraxas, were linked to cases of hereditary breast cancer.

Researchers have now identified more than 10 genes that increase breast cancer risk; perhaps the most well-known of these are the BRCA1 and BRCA2 genes.

Because the study was conducted in Finland, future studies will need to investigate how common the mutation is in other countries, said study researcher Roger Greenberg, an associate professor of cancer biology at the University of Pennsylvania School of Medicine.

In the future, women with a family history of breast cancer might be tested for the Abraxas mutation, Greenbergsaid.

Greenberg and colleagues found the Abraxas mutation in three of 125 breast cancer patients from families with a history of the condition.

This gene had been suspected to play a role in breast cancer risk because it interacts with BRCA1.

When the researchers looked at an additional 991 breast cancer patients, they found the Abraxas mutation in one woman, who also turned out to have breast cancer in her family.

None of the 868 healthy patients in the study had the Abraxas mutation.

The mutated Abraxas gene prevents cells from fixing damaged DNA, increasing the risk that a cell will become cancerous. The gene may increase the risk of other cancers as well.

Indeed, one patient in the study was diagnosed with both breast and endometrial cancer, and some patients with the Abraxas mutation had family members with lung cancer, lip cancer and lymphoma.

Women with a mutation in BRCA1 or BRCA2 are about five times more likely to develop breast cancer in their lifetimes compared with women who do not have this mutation, according to the National Cancer Institute.

Such genetic information may even help doctors better diagnose breast cancer. Most patients with the Abraxas mutation in the study had a type of breast cancer called lobular carcinoma, which is harder to detect on a mammogram. Knowing that a patient has this mutation might mean doctors use additional screening methods, such as MRI, Dr Byrne added.

The study has been published in the journal Science Translational Medicine. (ANI)

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Source: http://news.hamaraphotos.com/ani/new-mutation-behind-breast-cancer-identified.html

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