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) |
| Pseudoepiphyses of the 2nd finger | 100% |
| Abnormality of epiphysis morphology | 90% |
| Clinodactyly of the 5th finger | 90% |
| Glossoptosis | 90% |
| Full cheeks | 50% |
| Highly arched eyebrow | 50% |
| Limitation of joint mobility | 50% |
| Low-set, posteriorly rotated ears | 50% |
| Otitis media | 50% |
| Scoliosis | 50% |
| Short stature | 50% |
| Ventricular septal defect | 50% |
| Bilateral single transverse palmar creases | 40% |
| Dextrocardia | 39% |
| Turricephaly | 39% |
| Abnormality of the pinna | 33% |
| Abnormality of the ribs | 7.5% |
| Atria septal defect | 7.5% |
| Camptodactyly of finger | 7.5% |
| Cleft upper lip | 7.5% |
| Cryptorchidism | 7.5% |
| Facial palsy | 7.5% |
| Hypertelorism | 7.5% |
| Inguinal hernia | 7.5% |
| Intrauterine growth retardation | 7.5% |
| Joint contracture of the hand | 7.5% |
| Joint hypermobility | 7.5% |
| Joint laxity | 7.5% |
| Pectus excavatum | 7.5% |
| Recurrent abscess formation | 7.5% |
| Seizures | 7.5% |
| Short neck | 7.5% |
| Talipes | 7.5% |
| Talipes equinovarus | 7.5% |
| Umbilical hernia | 7.5% |
| Ventriculomegaly | 7.5% |
| Camptodactyly | - |
| Coarctation of aorta | - |
| Cystic hygroma | - |
| High palate | - |
| Joint dislocation | - |
| Low-set ears | - |
| Overriding aorta | - |
| Pectus carinatum | - |
| Postnatal growth retardation | - |
| Sporadic | - |
| Ulnar deviation of the 2nd finger | - |
| X-linked recessive inheritance | - |
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.
