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Updated: Aug 16, 2026

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
Published on: November 3, 2010
09/15: Comparative genomics of a conserved chromosomal region associated with a complex human phenotype
1Center for Human Molecular Genetics, Department of Cell Biology and Anatomy, Munroe-Meyer Institute, Omaha, NE 68198-5455, USA. ckappen@unmc.edu
Abstract:
Three genes that encode related immunoglobulin superfamily molecules have recently been mapped to human chromosome 15 in the region q22.3-q23 and to the syntenic region on mouse chromosome 9. These genes presumably derived from gene duplications, and they are highly similar to Deleted in Colorectal Cancer (DCC), which functions as an axon guidance molecule during development of the nervous system. To find out whether additional genes of this class were present in a chromosomal cluster, we produced a comparative physical map within the region of synteny between mouse chromosome 9 and human chromosome 15. This interval overlaps the critical region for the fourth genetic locus for Bardet-Biedl syndrome (BBS4) in humans. Bardet-Biedl syndrome (OMIM 600374) is characterized by poly/syn/brachydactyly, retinal degeneration, hypogonadism, mental retardation, obesity, diabetes, and kidney abnormalities. A detailed map of this locus will help to identify candidate genes for this disorder.
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