DMD-specific FISH probes are diagnostically useful in the detection of female carriers of DMD gene deletions

A. Voskova-Goldman, A. Peier, C. T. Caskey, Carolyn (Sue) Richards, Lisa G. Shaffer

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The challenge of Duchenne muscular dystrophy (DMD) carrier identification resides in the ability to identify the presence of a mutant gene over the background contributed by the normal allele. Current diagnosis of carrier status when a deletion has been identified in a proband is based on an analysis of a gene dosage. We present a diagnostic strategy that uses fluorescence in situ hybridization (FISH) to detect female carriers with major deletions in the dystrophin gene. We screened a human X-chromosome derived genomic library with a full-length dystrophin cDNA and isolated 15 dystrophin-specific cosmids that contain DMD gene exons. Six cosmids were further tested as FISH probes in control individuals and subsequently applied on chromosomes from eight males with DMD and known deletions and on samples from three female carriers. As expected, X chromosomes in normal females displayed four signals, two for the DMD-specific probe and two for the X- chromosome centromeric probe. Hybridization on chromosomal spreads from carriers of deletions revealed only one signal from the DMD-specific probe and two from the control centromeric probe. Males carrying deletions showed no DMD-specific signal for the deleted exons tested. Our data indicate that FISH could represent an alternative method for the detection of female carriers with DMD gene deletions.

Original languageEnglish (US)
Pages (from-to)1633-1638
Number of pages6
JournalNeurology
Volume48
Issue number6
StatePublished - Jun 1997
Externally publishedYes

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Duchenne Muscular Dystrophy
Gene Deletion
Fluorescence In Situ Hybridization
Dystrophin
Cosmids
X Chromosome
Exons
Chromosomes, Human, X
Genes
Gene Dosage
Genomic Library
Complementary DNA
Chromosomes
Alleles

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Voskova-Goldman, A., Peier, A., Caskey, C. T., Richards, C. S., & Shaffer, L. G. (1997). DMD-specific FISH probes are diagnostically useful in the detection of female carriers of DMD gene deletions. Neurology, 48(6), 1633-1638.

DMD-specific FISH probes are diagnostically useful in the detection of female carriers of DMD gene deletions. / Voskova-Goldman, A.; Peier, A.; Caskey, C. T.; Richards, Carolyn (Sue); Shaffer, Lisa G.

In: Neurology, Vol. 48, No. 6, 06.1997, p. 1633-1638.

Research output: Contribution to journalArticle

Voskova-Goldman, A, Peier, A, Caskey, CT, Richards, CS & Shaffer, LG 1997, 'DMD-specific FISH probes are diagnostically useful in the detection of female carriers of DMD gene deletions', Neurology, vol. 48, no. 6, pp. 1633-1638.
Voskova-Goldman, A. ; Peier, A. ; Caskey, C. T. ; Richards, Carolyn (Sue) ; Shaffer, Lisa G. / DMD-specific FISH probes are diagnostically useful in the detection of female carriers of DMD gene deletions. In: Neurology. 1997 ; Vol. 48, No. 6. pp. 1633-1638.
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