Genetics in medicine : official journal of the American College of Medical Genetics · 2004
FISH analysis helps identify low-level mosaicism in Ullrich-Turner syndrome patients.
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Wiktor Anne, Van Dyke Daniel L
Аннотация
PURPOSE: To search for X or Y chromosome mosaicism in 45,X individuals using fluorescent in situ hybridization (FISH).
METHODS: From our series of 53 Ullrich-Turner syndrome patients, we used interphase FISH to evaluate the 19 who had an apparently nonmosaic 45,X karyotype with G-banding.
RESULTS: Of those 19 patients, mosaicism was detected in seven (37%), five patients had an XX line, one had a monocentric isochromosome X, and one had a dicentric isochromosome X. No Y chromosome mosaic was identified.
CONCLUSION: FISH analysis is a sensitive and cost-effective adjunct to karyotype analysis to identify sex chromosome mosaicism in UTS.
METHODS: From our series of 53 Ullrich-Turner syndrome patients, we used interphase FISH to evaluate the 19 who had an apparently nonmosaic 45,X karyotype with G-banding.
RESULTS: Of those 19 patients, mosaicism was detected in seven (37%), five patients had an XX line, one had a monocentric isochromosome X, and one had a dicentric isochromosome X. No Y chromosome mosaic was identified.
CONCLUSION: FISH analysis is a sensitive and cost-effective adjunct to karyotype analysis to identify sex chromosome mosaicism in UTS.