NCIt definition : Human RAP1GDS1 wild-type allele is located within 4q23-q25 and is approximately 182
kb in length. This allele, which encodes Rap1 GTPase-GDP dissociation stimulator 1
protein, plays a role in the modulation of GTPase activity. A chromosomal translocation
t(4;11)(q21;p15) of this gene and the NUP98 gene may be associated with T cell acute
lymphocytic leukemia.;