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Understanding Cancer Series

  • Posted: 01/28/2005
  • Reviewed: 09/01/2006

Slide 30

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Limitations of Gene Testing

Gene testing has several limitations.

For example, some disorders that "run in families" can be traced to shared environmental exposures rather than any inherited susceptibility. In addition, some mutations detected by a positive test may never lead to disease. Furthermore, because existing tests look only for the more common mutations in a gene, some disease-causing mutations may escape detection.

Limitations of Gene Testing