Companies have seen a number of failures in amyloid-targeting drugs, including Myriad Genetics Inc.

WSJ: For Alzheimer's, a Fork in the Road

The U.S. Patent and Trademark Office has been awarding patents on human genes for almost 30 years, but opponents of Salt Lake City-based Myriad Genetics Inc.

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V. ( NASD: QGEN) is off about 2.6%, Illumina Inc ( NASD: ILMN) is down about 0.3%, and Myriad Genetics, Inc. ( NASD: MYGN) is lower by about 1.1%.

FORBES: FBT, QGEN, ILMN, MYGN: ETF Outflow Alert