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Chest X-ray exposure may increase likelihood of breast cancer

>"Since BRCA proteins are integral in repairing damage to breast cells, we hypothesized that women with BRCA 1/2 mutations would be less able to repair damage caused to DNA by ionizing radiation," said Dr. Goldgar. "Our findings support this hypothesis and stress the need for prospective studies."

Investigators noted two primary limitations of the study. The first was the potential for "recall bias," meaning that women who had developed breast cancer might be more likely to remember receiving an X-ray than women who had not been diagnosed with the disease. The second was the lack of data on the specific dose and timing of radiation that was received.

"Effect of chest X-rays on the risk of breast cancer among BRCA1/2 mutation carriers in the IBCCS Study," Nadine Andrieu et al, INSERM Emi00-06 et Service de Biostatistique de l'Institut Curie, France.


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26-Jun-2006


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