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Correlation of cognitive, neurologic, and ovarian outcome with the Q188R mutation of the galactose-1-phosphate uridyltransferase gene.

Abstract
This study was conducted to determine whether there is a genotype/phenotype correlation between aspects of cognitive, neurologic, and ovarian outcome in patients with galactosemia and the Q188R mutation of the galactose-1-phosphate uridyltransferase gene. The results showed that the Q188R mutation was found in 72% of alleles: 38 patients were homozygous and 21 were heterozygous for Q188R; eight patients did not have the mutation. The mean Broad Cognitive score for the group homozygous for Q188R was 75 (SD = 16), which was not statistically different from the outcome for the heterozygous group (mean score, 67; SD = 25) or the negative group (mean score, 88; SD = 21). Tremor, ataxia, and dysmetria were found in 12 subjects, and there was no association with Q188R status. Similarly, there was no association of this mutation with the development of primary amenorrhea (8 subjects) versus secondary amenorrhea (found in 14 women). Our findings suggests that the variability of outcome for patients with classic galactosemia cannot be explained by Q188R status alone, at least with regard to cognitive functioning, presence of neurologic symptoms, and timing of the onset of ovarian failure.
AuthorsF R Kaufman, J K Reichardt, W G Ng, Y K Xu, F R Manis, C McBride-Chang, J A Wolff
JournalThe Journal of pediatrics (J Pediatr) Vol. 125 Issue 2 Pg. 225-7 (Aug 1994) ISSN: 0022-3476 [Print] United States
PMID8040766 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • UTP-Hexose-1-Phosphate Uridylyltransferase
Topics
  • Adolescent
  • Adult
  • Child
  • Cognition
  • Female
  • Galactosemias (complications, genetics, psychology)
  • Homozygote
  • Humans
  • Male
  • Movement Disorders (etiology, genetics)
  • Mutation
  • Primary Ovarian Insufficiency (etiology, genetics)
  • UTP-Hexose-1-Phosphate Uridylyltransferase (genetics)

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