syndromic X-linked intellectual disability Hedera type https://github.com/monarch-initiative/mondo/issues/4521 https://github.com/monarch-initiative/mondo/issues/5588 https://www.malacards.org/card/intellectual_developmental_disorder_x_linked_syndromic_hedera_type https://www.malacards.org/card/syndromic_x_linked_intellectual_disability_hedera_type GARD:0016834 X-linked intellectual disability, Hedera type is a rare X-linked intellectual disability syndrome characterized by an onset in infancy of delayed motor and speech milestones, generalized tonic-clonic seizures and drop attacks, and mild to moderate intellectual disability. Additional, less common manifestations include scoliosis, ataxia (resulting in progressive gait disturbance), and bilateral pes planovalgus. Physical appearance is normal with no dysmorphic features reported. MONDO:0010319 mental retardation, X-linked, syndromic, Hedera type Orphanet:93952 X-linked intellectual disability, Hedera type OMIM:300423 UMLS:C1845543 MEDGEN:337257 X-linked intellectual disability with epilepsy intellectual disability, X-linked, syndromic, Hedera type DOID:0060806 intellectual developmental disorder, X-linked, syndromic, Hedera type, X-linked recessive intellectual disability, X-linked, with epilepsy MRXSH MESH:C564516 MRXE mental retardation, X-linked, with epilepsy X-linked intellectual disability-epilepsy syndrome ATP6AP2-related disorder