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Start free with EleplanAcrofrontofacionasal dysostosis
ORPHA:1784Malformation syndrome
Also called Richieri-Costa-Colletto syndrome
What it is
A rare congenital malformation syndrome characterized by the association of facial and skeletal anomalies with severe intellectual deficit and occasional genitourinary anomalies.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Neonatal
- Inheritance
- Autosomal recessive
- Classified as
- Malformation syndrome
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Very common80–99%
25- Abnormality of epiphysis morphology
- Anonychia
- Aplasia/Hypoplasia of the eyebrow
- Brachycephaly
- Brachydactyly
- Broad forehead
- Broad nasal tip
- Broad thumb
- Brushfield spots
- Camptodactyly of finger
- Cerebral cortical atrophy
- Cleft palate
- Dimple on nasal tip
- Downslanted palpebral fissures
- Eyelid coloboma
- High palate
- Hypertelorism
- Hypopigmented skin patches
- Intellectual disability, severe
- Micromelia
- Midface retrusion
- Non-midline cleft of the upper lip
- Ptosis
- Short distal phalanx of finger
- Short stature
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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