NCIt definition : Human RAPGEF2 wild-type allele is located in the vicinity of 4q32.1 and is approximately
257 kb in length. This allele, which encodes Rap guanine nucleotide exchange factor
2 protein, plays a role in the activation of Rap and Ras family GTPases. A repeat
expansion in the gene may be associated with familial adult myoclonic epilepsy 7.;