The Human Phenotype Ontology (HPO) provides the following list of features that have been reported in people with this condition. Much of the information in the HPO comes from Orphanet, a European rare disease database. If available, the list includes a rough estimate of how common a feature is (its frequency). Frequencies are based on a specific study and may not be representative of all studies. You can use the MedlinePlus Medical Dictionary for definitions of the terms below.
| Signs and Symptoms | Approximate number of patients (when available) |
| Aplasia/Hypoplasia of the radius | 90% |
| Aplasia/Hypoplasia of the thumb | 90% |
| Facial asymmetry | 90% |
| Atresia of the external auditory canal | 50% |
| Cognitive impairment | 50% |
| Complete atrioventricular canal defect | 50% |
| Preauricular skin tag | 50% |
| Renal hypoplasia/aplasia | 50% |
| Sacrococcygeal pilonidal abnormality | 50% |
| Sensorineural hearing impairment | 50% |
| Short stature | 50% |
| Vertebral segmentation defect | 50% |
| Abnormality of the genital system | 7.5% |
| Aplasia/Hypoplasia affecting the eye | 7.5% |
| Aplasia/Hypoplasia of the lungs | 7.5% |
| Cleft eyelid | 7.5% |
| Conductive hearing impairment | 7.5% |
| Ectopic anus | 7.5% |
| Maternal diabetes | 7.5% |
| Non-midline cleft lip | 7.5% |
| Preaxial hand polydactyly | 7.5% |
| Triphalangeal thumb | 7.5% |
| Wide mouth | 7.5% |
| Autosomal dominant inheritance | - |
| Complete duplication of thumb phalanx | - |
| Microtia | - |
| Preauricular pit | - |
| Short mandibular rami | - |
Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.
Living with a genetic or rare disease can impact the daily lives of patients and families. These resources can help families navigate various aspects of living with a rare disease.
These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.
