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Cytogenet Cell Genet. 1997;76(3-4):172-5.

A somatic cell hybrid panel for distal 17q: GDIA1 maps to 17q25.3.

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Institute of Human Genetics and Anthropology, University of Freiburg, Germany.


A somatic cell hybrid panel was constructed consisting of seven hybrids with translocation breakpoints spanning the region 17q23-->q25. Hybrid clones carrying the longarm derivative of chromosome 17 in the absence of the normal chromosome 17 and of the derivative 17 were initially identified by PCR typing for a proximal and distal 17q marker. The translocation breakpoints of the hybrids were then mapped in more detail by PCR analysis for a number of microsatellite markers from chromosome 17q as well as for five gene loci (CACNLG, GH1, SOX9, TIMP2, TK1) previously mapped to the region 17q23-->q25. In addition, the locus for GDIA1 was mapped by FISH to 17q25.3 and fine mapped with the help of the hybrid panel. These seven new hybrids complement the existing somatic cell hybrid panel for the long arm of chromosome 17q.

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