RPT ? INSIGHT-Tests for new cancer ***** **t reliable e**ugh, doctors say

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RPT ? INSIGHT-Tests for new cancer ***** **t reliable e**ugh, doctors say
CHICAGO, June 2 (Reuters) - Drugmakers including Bristol-Myers Squibb Co and Merck & Co are testing which patients will most benefit from new cancer treatments based on a protein found in their tumors, but that guide, k**wn as a biomarker, may be too unreliable, researchers and health experts said.http://i2.wp.com/reuters.us.feedsportal.com/c/35217/f/654213/s/46dbe898/sc/14/mf.gif?resize=1%2C1
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