Mapping of the ICAM-5 (Telencephalin) Gene, a Neuronal Member of the ICAM Family, to a Location between ICAM-1 and ICAM-3 on Human Chromosome 19p13.2

Intercellular adhesion molecule 5 (ICAM-5, telencephalin) is a cell adhesion molecule expressed on neurons in the most rostral segment of the mammalian brain, the telencephalon. Antibody studies in rodents and rabbits have demonstrated expression of this molecule on the cell body and dendrites of these neurons. We have examined the expression pattern in human brain by Northern blot analysis of 16 human brain segments. This analysis has confirmed the unique expression pattern of this ICAM in human. In addition, we report the mapping of the human ICAM-5 gene to an 80-kb region on chromosome 19p13.2 that also contains ICAM-1 and ICAM-3.