Autosomal dominant primary microcephaly

What it is

A rare, genetic, non-syndromic, developmental defect during embryogenesis malformation syndrome characterized by a congenital, non-progressive, occipitofrontal head circumference that is 2 or more standard deviations below the mean for age, gender and ethnicity which is associated with normal brain architecture and uncomplicated by other abnormalities. Borderline to moderate intellectual disability, as well as early psychomotor delay, may or may not be associated.

Key facts

Age of onset

Antenatal, Infancy, Neonatal

Inheritance

Autosomal dominant

Classified as

Etiological subtype

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