RT Journal Article SR Electronic A1 Lederman, Lynne T1 Better Molecular Profiling is Needed for Rational, Targeted Therapy in CRC JF MD Conference Express YR 2014 FD SAGE Publications VO 14 IS 14 SP 22 OP 23 DO 10.1177/155989771414014 UL http://mdc.sagepub.com/content/14/14/22.abstract AB Colorectal cancer (CRC) was one the first solid malignancies to be classified using molecular profiling, and led to the identification of critical genes and pathways involved in this disease. This article discusses future directions of biomarker research, the molecular biomarker characterization and subtyping of CRC, and the implications of tumor heterogeneity.