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) |
| Abnormality of the outer ear | 90% |
| Hypoplasia of the zygomatic bone | 90% |
| Prominent nasal bridge | 90% |
| Split hand | 90% |
| Abnormality of pelvic girdle bone morphology | 50% |
| Abnormality of the fibula | 50% |
| Aplasia/Hypoplasia of the radius | 50% |
| Aqueductal stenosis | 50% |
| Holoprosencephaly | 50% |
| Radioulnar synostosis | 50% |
| Sprengel anomaly | 50% |
| Abnormal form of the vertebral bodies | 7.5% |
| Abnormality of female internal genitalia | 7.5% |
| Finger syndactyly | 7.5% |
| Intrauterine growth retardation | 7.5% |
| Renal hypoplasia/aplasia | 7.5% |
| Talipes | 7.5% |
| Absent forearm | - |
| Autosomal recessive inheritance | - |
| Deeply set eye | - |
| Deep-set nails | - |
| Fibular hypoplasia | - |
| Hypertelorism | - |
| Low-set ears | - |
| Narrow mouth | - |
| Oligodactyly | - |
| Overlapping toe | - |
| Posteriorly rotated ears | - |
| Prominent nose | - |
| Short philtrum | - |
| Short stature | - |
| Short tibia | - |
| Single transverse palmar crease | - |
| Talipes equinovarus | - |
| Thin skin | - |
| Triphalangeal thumb | - |
| Wide anterior fontanel | - |
| Wide nasal bridge | - |
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.
