FGFR1 and alpha thalassemia-X-linked intellectual disability syndrome: Additionally, several other gene alterations, including activin A receptor type I (ACVR1), fibroblast growth factor receptor 1 (FGFR1), BRAFV600E, and alpha‐thalassemia mental retardation X‐linked (ATRX) mutations, have been associated with the survival of DMG.7, 8, 10, 11