fragile X syndrome(redirected from Fragile X syndrome type 2)
Also found in: Dictionary, Medical.
Related to Fragile X syndrome type 2: Williams syndrome, Klinefelter syndrome, Klinefelter's syndrome, Down syndrome, Rett syndrome, Angelman syndrome, Turner syndrome, Prader Willi syndrome
fragile X syndrome[‚fraj·əl ′eks ‚sin‚drōm]
A hereditary condition resulting from a trinucleotide repeat at an inherited fragile site on the long arm of the X chromosome. Affected males usually have some characteristic facial features, enlarged testes, and mental retardation. Females with on fragile X chromosome and one normal X chromosome may have a lesser degree of mental retardation.