A very rare congenital genetic neurological disorder with characteristics of agenesis/hypoplasia of corpus callosum with developmental abnormalities, ocular disorders and variable craniofacial and skeletal abnormalities. Most reported families have multiple cases of Temtamy syndrome and almost all affected individuals are from consanguineous unions. The main clinical findings are dysmorphic facies, hypotonia, moderate to severe intellectual disability, intractable seizures and autistic features such as absent language or stereotypy. Motor and cognitive delay usually manifests in early childhood. The pathogenesis of Temtamy syndrome is not known. Various mutations (homozygous, missense, compound heterozygous) in the C12orf57 gene (12p13.31) have been reported in affected patients. Follows an autosomal recessive pattern of inheritance.