Evaluation of school children at high risk for fragile X syndrome utilizing buccal cell FMR-1 testing

Randi J Hagerman, P. Wilson, L. W. Staley, K. A. Lang, T. Fan, C. Uhlhorn, S. Jewell- Smart, C. Hull, J. Drisko, K. Flom, A. K. Taylor

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

We describe a pilot project utilizing saliva to identify the FMR-1 mutation in high-risk special education students from four public school districts in Colorado. The program included presentations to special education teachers regarding fragile X syndrome parental consent for testing, completion of a behavior checklist by the teachers, identification of special education students at high risk for fragile X syndrome, subsequent brief examination of face and hands, collection of a saliva sample by either Gatorade swish or brushing of the inside of the cheek, and analysis for the FMR-1 mutation by PCR. Equivocal samples were studied by direct DNA testing using Southern blot analysis, and abnormal results were confirmed by a blood analysis for the FMR-1 mutation. Mutant individuals received genetic counseling and medical and educational assessments to optimize treatment and intervention. This pilot project was met with enthusiasm by the schools. Of the first 439 students evaluated, 68% were male with an average age of 7.75 years; 13% were mentally retarded or autistic. Most students referred for the evaluation were learning disabled (51%) and/or had an Attention Deficit Hyperactivity Disorder (ADHD) (35%). The overall prevalence of the FMR-1 mutation was 5 of 439 or 1.1%. This relatively low yield is probably due to the high number of non-retarded but learning disabled students tested. Of the mentally retarded patients tested, 3.5% were positive for the FMR-1 mutation; however, of the non-retarded or learning disabled patients, only 0.79% were FMR-1 positive. The high-risk criteria have been strengthened with a focus on mentally retarded individuals in an effort to increase our yield of affected individuals in the future.

Original languageEnglish (US)
Pages (from-to)474-481
Number of pages8
JournalAmerican Journal of Medical Genetics
Volume51
Issue number4
DOIs
StatePublished - 1994
Externally publishedYes

Fingerprint

Fragile X Syndrome
Cheek
Special Education
Students
Mentally Disabled Persons
Mutation
Learning
Saliva
Educational Measurement
Parental Consent
Genetic Counseling
Attention Deficit Disorder with Hyperactivity
Southern Blotting
Checklist
Hand
Polymerase Chain Reaction
DNA

Keywords

  • FMR-1
  • fragile X syndrome
  • high-risk patients
  • learning disabled
  • mental retardation
  • saliva testing
  • screening

ASJC Scopus subject areas

  • Genetics(clinical)

Cite this

Evaluation of school children at high risk for fragile X syndrome utilizing buccal cell FMR-1 testing. / Hagerman, Randi J; Wilson, P.; Staley, L. W.; Lang, K. A.; Fan, T.; Uhlhorn, C.; Jewell- Smart, S.; Hull, C.; Drisko, J.; Flom, K.; Taylor, A. K.

In: American Journal of Medical Genetics, Vol. 51, No. 4, 1994, p. 474-481.

Research output: Contribution to journalArticle

Hagerman, RJ, Wilson, P, Staley, LW, Lang, KA, Fan, T, Uhlhorn, C, Jewell- Smart, S, Hull, C, Drisko, J, Flom, K & Taylor, AK 1994, 'Evaluation of school children at high risk for fragile X syndrome utilizing buccal cell FMR-1 testing', American Journal of Medical Genetics, vol. 51, no. 4, pp. 474-481. https://doi.org/10.1002/ajmg.1320510436
Hagerman, Randi J ; Wilson, P. ; Staley, L. W. ; Lang, K. A. ; Fan, T. ; Uhlhorn, C. ; Jewell- Smart, S. ; Hull, C. ; Drisko, J. ; Flom, K. ; Taylor, A. K. / Evaluation of school children at high risk for fragile X syndrome utilizing buccal cell FMR-1 testing. In: American Journal of Medical Genetics. 1994 ; Vol. 51, No. 4. pp. 474-481.
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