tetrasomy 21
ORPHA: 96055
Available Treatments (0)
No treatments linked yet
Clinical trials or compassionate use may be available — consult a specialist.
Clinical Presentation
Signs and symptoms associated with tetrasomy 21, sourced from HPO and Orphanet clinical annotations.
BrachycephalyMicrocephalyRound faceThickened nuchal skin foldUpslanted palpebral fissureSingle transverse palmar creaseBrachydactylyIntellectual disabilityHypotoniaGlobal developmental delayProtruding tongueMacroglossiaHypertelorismComplete atrioventricular canal defectSandal gapDepressed nasal bridgeTransient myeloproliferative syndrome
Classification & Codes
Orphanet Code
ORPHA:96055tetrasomy 21
| Orphanet | ORPHA:96055 |
| Treatments | 0 drug(s) |
| Symptoms on record | 17 signs |
| Status | published |
Factual Authority
Last Updated3/20/2026
Clinical DataHPO · Orphanet
Drug DataFDA · EMA · CDSCO