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Craniofacial-deafness-hand syndrome (CDHS) is an autosomal dominant disorder, described in one family to date, characterized by characteristic facial features (flat facial profile with normal calvarium, hypertelorism, small downslanting palpebral fissures, hypoplastic nose with button tip and slitlike nares, small ''pursed'' mouth), profound sensorineural deafness, and ulnar deviations and contractures of the hand. CDHS is thought to be an allelic variant of Waardenburg syndrome that can be distinguished from the latter by its imaging findings and distinct facial features.
Features include very common findings: Downslanted palpebral fissures, Inner ear hearing loss (sensorineural hearing impairment), Short nose, and Hypertelorism and others; and common findings: Camptodactyly of finger. 21 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Arms and legs | 3 | Ulnar deviation of the hand, Ulnar deviation of finger, Camptodactyly of finger |
Head and neck | 3 | Hypoplasia of the maxilla, Flat face, Narrow face |
Brain and nerves | 2 | Depressed nasal bridge, Depressed nasal ridge |
Ears | 1 | Inner ear hearing loss (sensorineural hearing impairment) |
The phenotype of Waardenburg syndrome type I (WS1) is variable even within a family. summarized the penetrance (percentage) of clinical features of WS1 in 60 individuals with WS1 and 210 affected individuals reported elsewhere in the literature. reviewed the clinical features of the Waardenburg syndromes, and discussed their screening program for Waardenburg syndrome in Colombia, detailing the percentage of each clinical manifestation; percentages similar to those found in the study were documented. However, ascertainment bias was evident, as all 95 affected individuals had hearing loss and were among the institutionalized deaf population in Colombia.
Table 2.
Waardenburg Syndrome Type I: Frequency of Select Features
Feature | % of Persons w/Feature
Sensorineural hearing loss | 47%-58%
Source: GeneReviews — "Waardenburg Syndrome Type I"
PAX3 function has not been fully characterized.
Craniofacial-deafness-hand syndrome is associated with mutations in the PAX3 gene on chromosome 2.
PAX3. Genotype-phenotype correlations in PAX3 are not well established, except for the pathogenic variant, which causes Waardenburg syndrome type III , and the pathogenic variant, which is described in craniofacial-deafness-hand syndrome . found that the presence of pigmentary disturbances in individuals with WS1 correlated more with PAX3 pathogenic variants that delete the homeodomain than with missense or deletion pathogenic variants that include the paired domain. No genotype-phenotype correlation for the hearing loss in WS1 has been found. PAX3 partial- or whole-gene deletions. There appears to be no discernable difference in the severity associated with whole- or partial-gene deletions and the clinical spectrum reported for small intragenic PAX3 pathogenic variants .
Source: GeneReviews — "Waardenburg Syndrome Type I"
Waardenburg syndrome type I (WS1) should be suspected in individuals with several of the following major and minor criteria.
Major criteria
Congenital sensorineural hearing loss
White forelock, hair hypopigmentation
Pigmentation abnormality of the iris:
Complete heterochromia iridum (irides of different color)
Partial/segmental heterochromia (two different colors in same iris, typically brown and blue)
Hypoplastic blue irides or brilliant blue irides
Dystopia canthorum, W index 1.95 (See Note – W index.)
Affected first-degree relative
Minor criteria
Skin hypopigmentation (congenital leukoderma)
Synophrys and/or medial eyebrow flare
Broad/high nasal root, low-hanging columella
Underdeveloped alae nasi
Premature gray hair (age 30 years)
Source: GeneReviews — "Waardenburg Syndrome Type I"
Waardenburg syndrome type I (WS1) needs to be differentiated from other causes of congenital, non-progressive sensorineural hearing loss (see Hereditary Hearing Loss and Deafness Overview) and from other forms of Waardenburg syndrome. Waardenburg syndrome type II (WS2). WS1 is distinguished from WS2 by the presence in WS1 of lateral displacement of the inner canthi (dystopia canthorum). If the average W index across a family is less than 1.95, the diagnosis is WS2. Sensorineural hearing loss and heterochromia iridum are the two most characteristic features of WS2. Both are more common in WS2 than WS1. White forelock and leukoderma are both more common in WS1 than in WS2 . Table 4. Comparison of Clinical Features in Waardenburg Syndrome Type I and Waardenburg Syndrome Type II Clinical Finding | % of Affected Persons WS1 | WS2
Sensorineural hearing loss | 47%-58% | 77%-80% |
|---|---|---|
Heterochromic irides | 15%-31% | 42%-54% |
Genetic testing for PAX3 is available. Testing is considered confirmatory for diagnosis.
No approved treatments are currently available for craniofacial-deafness-hand syndrome. The disease remains an area of unmet medical need.
To establish the extent of disease and needs in an individual diagnosed with Waardenburg syndrome type I (WS1), the following evaluations (if not performed as part of the evaluation that led to the diagnosis) are recommended:
Audiology evaluation
Consultation with a medical geneticist, certified genetic counselor, or certified advanced genetic nurse to inform affected individuals and their families about the nature, mode of inheritance, and implications of WS1 in order to facilitate medical and personal decision making
Management of the hearing loss associated with WS1 depends on its severity (see Deafness and Hereditary Hearing Loss Overview). Cochlear implantation has been successful in individuals with Waardenburg syndrome [, , , ].
The hearing loss in WS1 is typically non-progressive. Hence, repeat audiogram would usually not be necessary.
It is appropriate to evaluate at-risk relatives of an affected individual to allow early screening of those at risk for hearing loss. Evaluations can include:
Molecular genetic testing if the pathogenic variant in the family is known;
Physical examination for the clinical features of WS1 and audiology evaluation if the pathogenic variant in the family is not known.
See for issues related to testing of at-risk relatives for genetic counseling purposes.
Folic acid supplementation in pregnancy has been recommended for w...
Source: GeneReviews — "Waardenburg Syndrome Type I"
Search ClinicalTrials.gov in the US and EU Clinical Trials Register in Europe for access to information on clinical studies for a wide range of diseases and conditions. Note: There may not be clinical trials for this disorder.
Source: GeneReviews — "Waardenburg Syndrome Type I"
View trials for craniofacial-deafness-hand syndrome
The hearing loss in WS1 is typically non-progressive. Hence, repeat audiogram would usually not be necessary.
Source: GeneReviews — "Waardenburg Syndrome Type I"
Phenotype severity distribution: 16 very common features, 1 common feature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for craniofacial-deafness-hand syndrome.
1 publication has been identified in PubMed for craniofacial-deafness-hand syndrome. Research spans Case Report / Case Series (100%).
Saenz Hinojosa S (2024). [PMID: 39850491](https://pubmed.ncbi.nlm.nih.gov/39850491/). *Front Genet*. [Case Report / Case Series]
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 1:06 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Hypoplastic blue irides
15%-18% |
3%-23% |
White forelock | 43%-48% | 16%-23% |
Early graying | 23%-38% | 14%-30% |
Leukoderma | 22%-36% | 5%-12% |
High nasal root | 52%-100% | 0%-14% |
Medial eyebrow flare | 63%-73% | 7%-12% Based on , , WS1 = Waardenburg syndrome type I; WS2 = Waardenburg syndrome type II Table 5. |
Genes of Interest in the Differential Diagnosis of Waardenburg Syndrome Type I Gene(s) | Disorder | MOI |
SOX10 | WS2 (OMIM PS193500) | ADAR |
SOX10 | WS4 (OMIM PS193500) | ADAR |
SNAI2 | Piebaldism (OMIM 172800) | AD |
MITF | Tietz syndrome (OMIM 103500) | AD |
Source: GeneReviews — "Waardenburg Syndrome Type I"