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Researchers Spot New Gene Mutation Linked to Breast Cancer

Researchers Spot New Gene Mutation Linked to Breast Cancer

02/22/12

WEDNESDAY, Feb. 22 (HealthDay News) -- Scientists have identified a new gene mutation linked to breast cancer.

The mutation is in the Abraxas gene, which interacts with the well-known breast cancer gene BRCA1. Abraxas organizes a large BRCA1 protein-containing complex that is needed to repair DNA damage.

The mutation affects the ability of the Abraxas protein to enter the nucleus and bind to sites adjacent to damaged DNA. This leads to genetic alterations that increase breast cancer risk, Roger Greenberg, an associate professor of cancer biology at the Perelman School of Medicine at the University of Pennsylvania, said in a university news release.

Greenberg and his colleagues screened the members of 125 families in Finland with a history of breast cancer, and found women with both the Abraxas mutation and breast cancer in four families.

The findings, published Feb. 22 in the journal Science Translational Medicine, appears to establish Abraxas as a breast cancer-susceptibility gene, according to the researchers.

It has been known that BRCA genes do not act alone in causing breast cancer, but it has proven difficult for scientists to identify other culprits. In time, this Abraxas mutation may be added to the list of 14 mutations for which women in families with a history of breast cancer can be tested, the researchers said.

More information

The U.S. National Cancer Institute has more about breast-cancer risk.

Copyright © 2012 HealthDay. All rights reserved.

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.

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