High-resolution genetic and physical mapping of multiple epiphyseal dysplasia and pseudoachondroplasia mutations at chromosome 19p13.1-p12
- Jefferson Medical College, Phildelphia, PA (United States)
- Cedars-Sinai Medical Center, Los Angeles, CA (United States); and others
Multiple epiphyseal dysplasia (MED) and pseudoachondroplasia (PSACH) are autosomal dominant chondrodysplasias that have similar phenotypes at both clinical and cytological levels. With the recent mapping of PSACH and one form of MED (EDM1) to the pericentromeric region of chromosome 19, it is likely that the disease mutations are allelic. D19S212 and D19S215, genetic markers flanking the EDM1/PSACH locus, have been localized in a chromosome 19 physical map consisting of cosmid contigs ordered by high-resolution FISH. These two markers define an interval of approximately 3.1 Mb at the 19p13.1-p12 boundary. With as many as five informative crossovers within the D19S212-D19S215 interval, four new dinucleotide repeat polymorphisms have been identified. Analysis of recombinant haplotypes in the two families has narrowed the possible location of the EDM1/PSACH gene to an interval of approximately 600 kb. 30 refs., 3 figs., 1 tab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 390676
- Journal Information:
- Genomics, Vol. 28, Issue 3; Other Information: PBD: 10 Aug 1995
- Country of Publication:
- United States
- Language:
- English
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