Physical and transcript map of the autosomal dominant colobomatous microphthalmia locus on chromosome 15q12-q15 and refinement to a 4.4 Mb region. - Archive ouverte HAL Access content directly
Journal Articles European Journal of Human Genetics Year : 2004

Physical and transcript map of the autosomal dominant colobomatous microphthalmia locus on chromosome 15q12-q15 and refinement to a 4.4 Mb region.

Abstract

Congenital microphthalmia is a developmental disorder characterized by shortened axial length of the eye. We have previously mapped the gene responsible for autosomal dominant colobomatous microphthalmia in a 5-generation family to chromosome 15q12-q15. Here, we set up a physical and transcript map of the 13.8 cM critical region, flanked by loci D15S1002 and D15S1040. Physical mapping and genetic linkage analysis using 20 novel polymorphic markers allowed the refinement of the disease locus to two intervals in close vicinity, namely a centromeric interval, bounded by microsatellite DNA markers m3-m17, and a telomeric interval, m76-m24, encompassing respectively 1.9 and 2.5 Mb. Moreover, we excluded three candidate genes, CKTSF1B1, KLF13 and CX36. Finally, although a phenomenon of anticipation was suggested by phenotypic and pedigree data, no abnormal expansion of three trinucleotide repeats mapping to the refine interval was found in affected individuals.

Dates and versions

hal-00425119 , version 1 (20-10-2009)

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Cite

Laetitia Michon, Laurette Morlé, Muriel Bozon, L. Duret, Jean-Christophe Zech, et al.. Physical and transcript map of the autosomal dominant colobomatous microphthalmia locus on chromosome 15q12-q15 and refinement to a 4.4 Mb region.. European Journal of Human Genetics, 2004, 12 (7), pp.574-8. ⟨10.1038/sj.ejhg.5201197⟩. ⟨hal-00425119⟩
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