NEW YORK (GenomeWeb) — As a number of companies forge ahead with blood-based cell-free tumor DNA or circulating tumor cell "liquid biopsy" tests for cancer diagnostics, Foundation Medicine is taking a more cautious approach.

"We fundamentally believe that cell-free DNA tests, in the vast majority of clinical settings, should only be used when it's absolutely impossible to get hold of an FFPE biopsy, or that biopsy has been exhausted with the pathology work-up," Foundation Medicine CSO Phil Stephens told GenomeWeb recently.

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