EEF1B2 and Intellectual disability: 2014); there are no known coding polymorphisms. It is also noteworthy that a spice site mutation in EEF1B2 that encodes eEF1Bα, the GTP exchange factor for eEF1A, was detected in a consanguineous family with nonsyndromic intellectual disability (Najmabadi et al. 2011), highlighting the importance of this pathway for cognitive and neurological disorders.