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This article has been updated with additional information from Invitae about 100 cases with a positive result from DTC testing that were referred to it for confirmatory testing.

SEATTLE (GenomeWeb) – A study led by researchers at Invitae has found that 23andMe's direct-to-consumer BRCA test, which tests for three common variants in the BRCA1 and BRCA2 genes and is authorized by the US Food and Drug Administration, misses almost 90 percent of BRCA mutation carriers, both in those with and those without a personal or family history of cancer. 

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