Ephrin receptor B2 (EPHB2) has recently been proposed as a novel tumor suppressor gene in colorectal cancer (CRC). Inactivation of the gene has been shown to correlate with progression of colorectal tumorigenesis, and somatic mutations have been reported in both colorectal and prostate tumors.
Department of Medical Genetics, Molecular and Cancer Biology Research Program, P,O, BOX 63, 00014 University of Helsinki, Finland. antti.kokko@helsinki.fi