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Syndrome reference sheet
Generated 12 Oct 2026
Genetics · Genetics / Single-gene syndromes Lujan–Fryns syndrome
Also known as: Lujan syndrome
X-linked intellectual disability with marfanoid habitus.
- Medical specialty
- Genetics
- Subspecialty
- Genetics / Single-gene syndromes
- Sex & age distribution
- Male: affected, X-linked; Female: carriers; Children: yes
- Gene(s) involved
- MED12
Etiology & mechanism
MED12 mutation.
Gene(s) involved (1)
MED12
Symptoms & signs (6)
behavioral problemshypernasal speechintellectual disabilitylong facemacrocephalymarfanoid habitus