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Oral-facial-digital syndrome, type 5 is characterized by median cleft of the upper lip, postaxial polydactyly of hands and feet, and oral manifestations (duplicated frenulum).
Features include always present findings: Prominent fingertip pads, Cutaneous syndactyly, Lobulated tongue, and Hypertelorism and others; and very common findings: Microcephaly and Postaxial polydactyly. 46 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Head and neck | 7 | Median cleft upper lip, Thin upper lip vermilion, High palate |
Arms and legs | 4 | Prominent fingertip pads, Postaxial hand polydactyly, Clinodactyly of the 5th finger |
Brain and nerves | 4 | Intellectual disability, Generalized-onset seizure, Global developmental delay |
Kidneys and urinary system | 2 | Horseshoe kidney, Crossed fused renal ectopia |
Eyes | 2 | Unilateral ptosis, Optic disc coloboma |
Ears | 1 | Hearing loss (hearing impairment) |
Heart and blood vessels | 1 | Ventricular septal defect |
Bones and joints | 1 | Sideways curvature of the spine (scoliosis) |
Digestive system | 1 | Feeding difficulties |
Lungs and breathing | 1 | Recurrent respiratory infections |
Blood and immune system | 1 | Recurrent respiratory infections |
Age of onset: at birth.
DDX59 encodes DEAD-box helicase 59 (619 aa). Highest expression in Cells EBV-transformed lymphocytes (17.3 TPM) and Cervix Endocervix (14.8 TPM).
Orofaciodigital syndrome V is associated with mutations in the DDX59 gene on chromosome 1.
DDX59 is classified as a druggable target (Enzyme category) with score 0.0.
Genetic testing for DDX59 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 17 always present features, 2 very common features, 18 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for orofaciodigital syndrome V.
8 publications have been identified in PubMed for orofaciodigital syndrome V. Research spans Basic Science / Preclinical (63%) and Case Report / Case Series (38%).
Pardo LM (2025). [PMID: 41054827](https://pubmed.ncbi.nlm.nih.gov/41054827/). *Clinical genetics*. [Basic Science / Preclinical]
Norppa AJ (2025). [PMID: 39761998](https://pubmed.ncbi.nlm.nih.gov/39761998/). *RNA (New York, N.Y.)*. [Basic Science / Preclinical]
Shankarappa B (2025). [PMID: 39911166](https://pubmed.ncbi.nlm.nih.gov/39911166/). *Molecular syndromology*. [Case Report / Case Series]
Porto Vasconcelos A (2025). [PMID: 39361243](https://pubmed.ncbi.nlm.nih.gov/39361243/). *Annals of human genetics*. [Case Report / Case Series]
Hannes L (2024). [PMID: 38158857](https://pubmed.ncbi.nlm.nih.gov/38158857/). *Genetics in medicine : official journal of the American College of Medical Genetics*. [Basic Science / Preclinical]
Mata M (2024). [PMID: 39696129](https://pubmed.ncbi.nlm.nih.gov/39696129/). *BMC pediatrics*. [Case Report / Case Series]
Liu K (2024). [PMID: 39447495](https://pubmed.ncbi.nlm.nih.gov/39447495/). *Journal of plastic, reconstructive & aesthetic surgery : JPRAS*. [Basic Science / Preclinical]
Queiroz A (2024). [PMID: 38185723](https://pubmed.ncbi.nlm.nih.gov/38185723/). *Special care in dentistry : official publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry*. [Basic Science / Preclinical]
Data assembled from 6 of 12 sources · Last updated Sep 20, 2026, 11:13 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center