TESTING FOR MUTATIONS OF THE ATAXIA TELANGIECTASIA GENE IN RADIOSENSITIVE BREAST CANCER PATIENTS
1998
Abstract Background and purpose : To determine if clinical radiosensitivity in breast cancer patients is related to mutations of the ataxia telangiectasia gene (ATM). Materials and methods : Fifteen patients who had developed a severe late reaction to a standard radiotherapy schedule were examined for evidence of increased in vitro radiosensitivity using the MTT assay. Mutation analysis was performed using a protein truncation assay. Results : No mutations were detected in the 15 patients despite evidence of increased in vitro radiosensitivity. Conclusions : Testing for the ATM gene is unlikely to be useful for predicting clinical response to radiotherapy in breast cancer patients.
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