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Fragile X Syndrome

GeneticFMR1 gene expansion1943 (described), 1991 (gene found)Inherited
TypeGenetic
CauseFMR1 gene expansion
First Known1943 (described), 1991 (gene found)
TransmissionInherited

About Fragile X Syndrome

The most common inherited intellectual disability. Named for the broken-looking X chromosome under the microscope. The mutation grows stronger as it passes between generations. A leading known genetic cause of autism.

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