Microphthalmia with linear skin defects syndrome

What it is

A rare X-linked, syndromic eye disorder characterized by ocular defects (microphthalmia, orbital cysts, corneal opacities) and linear skin dysplasia of the neck, head, and chin. Additional findings may include agenesis of corpus callosum, sclerocornea, chorioretinal abnormalities, hydrocephalus, seizures, intellectual deficit, and nail dystrophy.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Neonatal

Inheritance

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

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.

Genes

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.

Cross-references