The detailed entries of the Imprinted Gene Catalogue database were created by Benjamin Tycko, Columbia University, New York and are updated by Ian Morison


Detailed entry for Gene:



Human Chr1p31
Mouse no orthologue reported




Maternal allele repressed; paternal allele active (Yu Y et al, 1999).

Gene Product:

ARHI encodes a Ras/Rap homologue, which is a cytoplasmic protein, probably involved in cell signaling.

Functional Data:

Antiproliferative in transfected cells (Yu Y et al, 1999). Growth-retardation, both general and affecting mammary tissues, in high copy-number transgenic mice (Xu F et al, 2000). Proposed as a candidate tumor suppressor in breast and ovarian cancer based on loss of expression and mapping to a region of frequent LOH (Peng H et al, 2000).


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