Blood test could replace biopsy for rare cancer treated by Keytruda
Guardant Health, a biotechnology company, says its blood test could replace biopsy for rare cancer treated by Keytruda.
by Matthew Herper
Aug 05, 2019
1 minute
Two years ago, the Food and Drug Administration marked a big step forward in the way doctors think about cancer: It approved Merck’s Keytruda to treat tumors that appear anywhere in the body, but are marked
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