Prevalence of the fragile X syndrome in African-Americans.

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  • Additional Information
    • Source:
      Publisher: Wiley-Liss Country of Publication: United States NLM ID: 7708900 Publication Model: Print Cited Medium: Print ISSN: 0148-7299 (Print) Linking ISSN: 01487299 NLM ISO Abbreviation: Am J Med Genet Subsets: MEDLINE
    • Publication Information:
      Publication: New York, NY : Wiley-Liss
      Original Publication: New York, Liss 1977-2002.
    • Subject Terms:
      RNA-Binding Proteins*; Black People/*genetics ; Fragile X Syndrome/*genetics; Alleles ; Child ; Female ; Fragile X Mental Retardation Protein ; Fragile X Syndrome/epidemiology ; Gene Frequency ; Humans ; Male ; Mutation ; Nerve Tissue Proteins/genetics ; Prevalence ; Trinucleotide Repeats/genetics ; United States/epidemiology ; Black or African American
    • Abstract:
      Since the development of a molecular diagnosis for the fragile X syndrome in the early 1990s, several population-based studies in Caucasians of mostly northern European descent have established that the prevalence is probably between one in 6,000 to one in 4,000 males in the general population. Reports of increased or decreased prevalence of the fragile X syndrome exist for a few other world populations; however, many of these are small and not population-based. We present here the final results of a 4-year study in the metropolitan area of Atlanta, Georgia, establishing the prevalence of the fragile X syndrome and the frequency of CGG repeat variants in a large Caucasian and African-American population. Results demonstrate that one-quarter to one-third of the children identified with the fragile X syndrome attending Atlanta public schools are not diagnosed before the age of 10 years. Also, a revised prevalence for the syndrome revealed a higher point estimate for African-American males (1/2,545; 95% CI: 1/5,208-1/1,289) than reported previously, although confidence intervals include the prevalence estimated for Caucasians from this (1/3,717; 95% CI: 1/7,692-1/1,869) and other studies. Further population-based studies in diverse populations are necessary to explore the possibility that the prevalence of the fragile X syndrome differs among world populations.
      (Copyright 2002 Wiley-Liss, Inc.)
    • Grant Information:
      HD29909 United States HD NICHD NIH HHS
    • Accession Number:
      0 (FMR1 protein, human)
      0 (Nerve Tissue Proteins)
      0 (RNA-Binding Proteins)
      139135-51-6 (Fragile X Mental Retardation Protein)
    • Publication Date:
      Date Created: 20020713 Date Completed: 20021008 Latest Revision: 20240712
    • Publication Date:
      20240712
    • Accession Number:
      10.1002/ajmg.10427
    • Accession Number:
      12116230