Most X;autosome translocations associated with premature ovarian failure do not interrupt X-linked genes

R. L. Prueitt, H. Chen, R. I. Barnes, A. R. Zinn

Research output: Contribution to journalArticle

64 Scopus citations

Abstract

Balanced translocations with breakpoints in a critical region of the X chromosome, Xq13→q26, are associated with premature ovarian failure (POF). Translocations may cause POF either by affecting expression of specific X-linked genes essential for maintenance of normal ovarian function or by a chromosomal effect such as inhibition of meiotic pairing or altered X inactivation. We previously mapped seven Xq translocation breakpoints associated with POF to ∼75-kb intervals. One translocation disrupted an aminopeptidase gene, XPNPEP2. We have now refined the map location of the remaining six breakpoints with respect to known genes and transcription units predicted from the draft human genome sequence. Only one of the six breakpoints disrupts a gene, DACH2, the human ortholog of a mouse gene expressed in embryonic nervous tissue, sensory organs, and limbs. DACH2 has no obvious relationship to ovarian function. The other five breakpoints fall in apparently intragenic regions. Our results are most consistent with models for POF associated with X;autosome translocations that involve generalized chromosome effects.

Original languageEnglish (US)
Pages (from-to)32-38
Number of pages7
JournalCytogenetic and Genome Research
Volume97
Issue number1-2
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

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