Compositions and methods for detection of colorectal cancer

摘要

We have identified a new variant of ileal bile acid binding protein (IBABP), designated IBABP-L, which is a biomarker for colorectal cancer. The transcript for IBABP-L arises from an alternative start site and includes three exons that are absent in IBABP. IBABP-L also shares part of a fourth exon with IBABP. The protein encoded by IBABP-L contains a deduced 49 residue N-terminal sequence that is not found in the IBABP protein. The present invention provides methods for diagnosing colorectal cancer and other compositions and methods based on this discovery.