Lujan-Fryns syndrome

Lujan–Fryns syndrome, also referred to as X-linked mental retardation with Marfanoid habitus and Lujan syndrome, is an X-linked genetic disorder that causes mild to moderate mental retardation and features described as Marfanoid habitus, referring to a group of physical characteristics similar to those found in Marfan syndrome.

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Fragile X syndrome

Coffin–Lowry syndrome

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