Andrew Albright, PhD, Program Manager, Molecular Profiling, Merck & Co., Inc.
For decades, tumor biopsies have been used to diagnose and guide treatment; however, we are entering a new era where circulating tumor DNA (ctDNA) in the blood may provide a substrate for replacing long standing tissue-based assays. But, operational obstacles remain if we are to incorporate ctDNA testing in clinical trials as the field moves from exploratory/RUO testing to using ctDNA as a CDx assay, for enrollment, and stratification.