Scaphocephaly, Maxillary Retrusion, and Impaired Intellectual Development, also known as scaphocephaly, maxillary retrusion, and mental retardation, is related to familial scaphocephaly syndrome, mcgillivray type and familial scaphocephaly syndrome. An important gene associated with Scaphocephaly, Maxillary Retrusion, and Impaired Intellectual Development is FGFR2 (Fibroblast Growth Factor Receptor 2). Affiliated tissues include skin.