Defects in the DNA repair and transcription gene ERCC2(XPD) in trichothiodystrophy

Kyoko Takayama, Edmund P. Salazar, Bernard C. Broughton, Alan R. Lehmann, Alain Sarasin, Larry H. Thompson, Christine A. Weber

Research output: Contribution to journalArticle

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Abstract

Trichothiodystrophy (TTD) is a rare autosomal recessive disorder characterized by brittle hair with reduced sulfur content, ichthyosis, peculiar face, and mental and growth retardation. Clinical photosensitivity is present in ~50% of TTD patients but is not associated with an elevated frequency of cancers. Previous complementation studies show that the photosensitivity in nearly all of the studied patients is due to a defect in the same genetic locus that underlies the cancer-prone genetic disorder xeroderma pigmentosum group D (XP-D). Nucleotide-sequence analysis of the ERCC2 cDNA from three TTD cell strains (TTD1VI, TTD3VI, and TTD1RO) revealed mutations within the region from amino acid 713-730 and within previously identified helicase functional domains. The various clinical presentations and DNA repair characteristics of the cell strains can be correlated with the particular mutations found in the ERCC2 locus. Mutations of Arg658 to either His or Cys correlate with TTD cell strains with intermediate UV-sensitivity, mutation of Arg722 to Trp correlates with highly UV-sensitive TTD cell strains, and mutation of Arg683 to Trp correlates with XP-D. Alleles with mutation of Arg616 to Pro or with the combined mutation of Leu461 to Val and deletion of 716-730 are found in both XP-D and TTD cell strains.

Original languageEnglish (US)
Pages (from-to)263-270
Number of pages8
JournalAmerican Journal of Human Genetics
Volume58
Issue number2
StatePublished - 1996
Externally publishedYes

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Trichothiodystrophy Syndromes
DNA Repair
Mutation
Genes
Xeroderma Pigmentosum
Ichthyosis
Inborn Genetic Diseases
Genetic Loci
Sulfur
Intellectual Disability
Hair
Sequence Analysis
Neoplasms
Complementary DNA
Alleles
Amino Acids

ASJC Scopus subject areas

  • Genetics

Cite this

Takayama, K., Salazar, E. P., Broughton, B. C., Lehmann, A. R., Sarasin, A., Thompson, L. H., & Weber, C. A. (1996). Defects in the DNA repair and transcription gene ERCC2(XPD) in trichothiodystrophy. American Journal of Human Genetics, 58(2), 263-270.

Defects in the DNA repair and transcription gene ERCC2(XPD) in trichothiodystrophy. / Takayama, Kyoko; Salazar, Edmund P.; Broughton, Bernard C.; Lehmann, Alan R.; Sarasin, Alain; Thompson, Larry H.; Weber, Christine A.

In: American Journal of Human Genetics, Vol. 58, No. 2, 1996, p. 263-270.

Research output: Contribution to journalArticle

Takayama, K, Salazar, EP, Broughton, BC, Lehmann, AR, Sarasin, A, Thompson, LH & Weber, CA 1996, 'Defects in the DNA repair and transcription gene ERCC2(XPD) in trichothiodystrophy', American Journal of Human Genetics, vol. 58, no. 2, pp. 263-270.
Takayama K, Salazar EP, Broughton BC, Lehmann AR, Sarasin A, Thompson LH et al. Defects in the DNA repair and transcription gene ERCC2(XPD) in trichothiodystrophy. American Journal of Human Genetics. 1996;58(2):263-270.
Takayama, Kyoko ; Salazar, Edmund P. ; Broughton, Bernard C. ; Lehmann, Alan R. ; Sarasin, Alain ; Thompson, Larry H. ; Weber, Christine A. / Defects in the DNA repair and transcription gene ERCC2(XPD) in trichothiodystrophy. In: American Journal of Human Genetics. 1996 ; Vol. 58, No. 2. pp. 263-270.
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