Molecular screening of intellectually disabled patients and those with premature ovarian failure for CGG repeat expansion at FMR1 locus: Implication of combined triplet repeat primed polymerase chain reaction and methylation-specific polymerase chain reaction analysis.

Abstract excerpt

BACKGROUND: Fragile X syndrome (FXS) is also a leading cause of intellectual disability along with Down's syndrome. It is caused by the expansion of CGG triplet repeat at 5' untranslated region of the fragile X mental retardation 1 (FMR1) gene. Since the prevalence rate is quite high in the general population, molecular diagnosis is important to establish the cause and the prenatal diagnosis. At present, there...

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