Colobomatous macrophthalmia-microcornea…

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Colobomatous macrophthalmia-microcornea syndrome

ORPHA:468672Disease

Also called MACOM syndrome

What it is

A rare genetic eye disease characterized by microcornea, coloboma of the iris and the optic disc, axial enlargement of the globe, staphyloma, and severe myopia. Additional manifestations are mild cornea plana, iridocorneal angle abnormalities with elevation of intraocular pressure, and shallow anterior chamber depth. Variable expressivity of the phenotype has been described, including unilateral or bilateral involvement, or variable extent of coloboma, among other features.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Adolescent, Childhood, Elderly, Infancy
Inheritance
Autosomal dominant
Classified as
Disease

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.

Gene

CRIM1Disease-causing germline mutation(s)

ICD-10 codes

Q15.8filed under a broader ICD-10 category — shared with 11 other rare diseases

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.

Cross-references

MESH C566533MONDO 0011239OMIM 602499UMLS C1865286

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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