A group of Stanford University geneticists write that the practice of cataloging many people with common disease-causing genetic traits is likely to produce genetic variants with little bearing on the disease in question—essentially false positives that confuse the results.

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A group of Stanford University geneticists write that the practice of cataloging many people with common disease-causing genetic traits is likely to produce genetic variants with little bearing on the disease in question—essentially false positives that confuse the results.