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Start free with EleplanX-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
Very common80–99%
9These 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
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.
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