Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanPterygium colli-intellectual disability-digital anomalies syndrome
ORPHA:2988Malformation syndrome
Also called Khalifa-Graham syndrome
What it is
A rare disorder characterized by pterygium colli, digital anomalies (abnormal small thumbs, widened interphalangeal joints, and broad terminal phalanges), and craniofacial abnormalities (brachycephaly, epicanthic folds, angulated eyebrows, upward slanting of the palpebral fissures, ptosis, hypertelorism, and prominent low-set, posteriorly rotated ears). It has been described in a woman and her son, but the manifestations were much less severe in the mother. The son also had intellectual deficit. The inheritance is either X-linked dominant or autosomal dominant.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Neonatal
- Inheritance
- Autosomal dominant, X-linked dominant
- 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
Common30–79%
15- Abnormality of the epiphysis of the distal phalanx of the thumb
- Brachycephaly
- Broad distal phalanx of finger
- Enlarged interphalangeal joints
- Epicanthus inversus
- Generalized hypotonia
- Highly arched eyebrow
- Hypertelorism
- Intellectual disability
- Palmar edema
- Plantar edema
- Posteriorly rotated ears
- Proximal placement of thumb
- Ptosis
- Upslanted palpebral fissure
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.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.