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. This evidence concerns the gene EEF1B2 and nervous system disorder.