X-linked lissencephaly

Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.

Start free with Eleplan

X-linked lissencephaly with abnormal genitalia

ORPHA:452Malformation syndrome

Also called X-linked lissencephaly with ambiguous genitalia · X-linked lissencephaly-corpus callosum agenesis-genital anomalies syndrome · XLAG (X-linked lissencephaly with abnormal genitalia) syndrome

What it is

A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by lissencephaly, agenesis of the corpus callosum and other cerebral structural anomalies, early-onset intractable seizures, and ambiguous genitalia. Consequences of hypothalamic dysfunction, such as disturbed temperature regulation, may be observed. Additional anomalies including dysmorphic craniofacial features have been reported. The disease is fatal in infancy or childhood in males, while female carriers may be unaffected or show a milder phenotype with developmental delay, behavioral abnormalities, and seizures.

Key facts

Age of onset
Neonatal
Inheritance
X-linked recessive
Classified as
Malformation syndrome

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.

Gene

ARXDisease-causing germline mutation(s) (loss of function)

ICD-10 codes

Q04.3filed under a broader ICD-10 category — shared with 75 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.

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

GARD 12491MESH C564563MONDO 0010268OMIM 300215UMLS C1846171

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.