Global Developmental Delay, Absent or Hypoplastic Corpus Callosum, and Dysmorphic Facies, also known as gdaccf, is related to microcephaly and spinocerebellar ataxia 44. An important gene associated with Global Developmental Delay, Absent or Hypoplastic Corpus Callosum, and Dysmorphic Facies is ZNF148 (Zinc Finger Protein 148), and among its related pathways/superpathways is Neurogenesis regulation in the olfactory epithelium. The drugs Guanfacine and Methylphenidate have been mentioned in the context of this disorder. Affiliated tissues include brain and lung, and related phenotypes are global developmental delay and epicanthus