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A rare genetic neurodevelopmental disorder characterized by global developmental delay (DD) and variable degrees of intellectual disability (ID) with delayed or limited/absent speech development associated with neonatal hypotonia, feeding difficulties, cardiac anomalies and dysmorphic facial features, predominantly broad nasal tip and thin, tented upper lip. Microcephaly, frequent infections, gastrointestinal and/or ocular anomalies have also been described.
Features include always present findings: Gait imbalance, Highly arched eyebrow, Microcephaly, and Long thorax and others; and very common findings: Low-set ears, Motor stereotypy, Broad nasal tip, and Esodeviation and others. 100 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 10 | Dystonia, Gait imbalance, Absent speech |
Head and neck | 9 | Microcephaly, Peg-shaped maxillary lateral incisors, Thin upper lip vermilion |
Eyes | 6 | Strabismus, Amblyopia, Damage to the optic nerve (optic atrophy) |
Arms and legs | 5 | 3-4 finger cutaneous syndactyly, Lower limb asymmetry, Lower limb hypertonia |
Muscles | 5 | Generalized hypotonia, Damage to the optic nerve (optic atrophy), Neonatal hypotonia |
Lungs and breathing | 4 | Bronchomalacia, Respiratory distress, Neonatal respiratory distress |
Digestive system | 3 | Gastroesophageal reflux, Difficulty swallowing (dysphagia), Feeding difficulties |
Heart and blood vessels | 2 | Secundum atrial septal defect, Ventricular septal defect |
Pregnancy and birth | 2 | Neonatal hypotonia, Neonatal respiratory distress |
Kidneys and urinary system | 1 | Recurrent urinary tract infections |
Blood and immune system | 1 | Recurrent urinary tract infections |
Bones and joints | 1 | Enlarged proximal interphalangeal joints |
Ears | 1 | Recurrent otitis media |
Age of onset: newborn period.
KAT6A encodes lysine acetyltransferase 6A (2,004 aa). Histone acetyltransferase that acetylates lysine residues in histone H3 and histone H4 (in vitro). Component of the MOZ/MORF complex which has a histone H3 acetyltransferase activity. Highest expression in Lung (28.6 TPM) and Uterus (26.8 TPM).
Autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome is associated with mutations in the KAT6A gene on chromosome 8.
The KAT6A protein participates in KAT6A acetylates TP53, KAT6A and PML bind TP53, and KAT6A:ING5:MEAF6:BRPF1,(2,3):PML:Ac-K120,p-S15,S20-TP53, BRD7:p-S15,S20-TP53:EP300 pathways.
KAT6A is classified as a druggable target (Clinically Actionable, Enzyme, and Transcription Factor categories) with score 0.0.
Genetic testing for KAT6A is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 12 always present features, 9 very common features, 41 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome.
59 publications have been identified in PubMed for autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome. Kisho has analyzed 39 by research type. Research spans Case Report / Case Series (54%), Review / Meta-Analysis (21%), and Basic Science / Preclinical (13%).
Research Type | Count | % of Total |
|---|---|---|
Patient case studies | 21 | 54% |
Research summaries | 8 | 21% |
Laboratory research | 5 | 13% |
Disease patterns and progression | 3 | 8% |
Other research | 2 | 5% |
Martain-Pérez I (2026). [PMID: 42184404](https://pubmed.ncbi.nlm.nih.gov/42184404/). *Bol Med Hosp Infant Mex*. [Case Report / Case Series]
Ates K (2026). [PMID: 42204957](https://pubmed.ncbi.nlm.nih.gov/42204957/). *Dev Neurobiol*. [Review / Meta-Analysis]
Liang H (2026). [PMID: 41965552](https://pubmed.ncbi.nlm.nih.gov/41965552/). *BMC Endocr Disord*. [Case Report / Case Series]
Sabbagh Q (2026). [PMID: 41882293](https://pubmed.ncbi.nlm.nih.gov/41882293/). *Eur J Hum Genet*. [Epidemiology / Natural History]
Kostopoulou E (2026). [PMID: 42065018](https://pubmed.ncbi.nlm.nih.gov/42065018/). *Case Rep Neurol Med*. [Case Report / Case Series]
Harripaul R (2026). [PMID: 41865132](https://pubmed.ncbi.nlm.nih.gov/41865132/). *Sci Rep*. [Basic Science / Preclinical]
Eccles S (2026). [PMID: 41702672](https://pubmed.ncbi.nlm.nih.gov/41702672/). *Life Sci Alliance*. [Basic Science / Preclinical]
Mammadova N (2026). [PMID: 42053849](https://pubmed.ncbi.nlm.nih.gov/42053849/). *Mol Biol Rep*. [Case Report / Case Series]
Musante L (2026). [PMID: 41709284](https://pubmed.ncbi.nlm.nih.gov/41709284/). *Genome Med*. [Basic Science / Preclinical]
Voss AK (2026). [PMID: 42081590](https://pubmed.ncbi.nlm.nih.gov/42081590/). *PLoS Genet*. [Basic Science / Preclinical]
Data assembled from 6 of 12 sources · Last updated Sep 20, 2026, 11:35 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center