Identification of genetic markers flanking the locus for maturity-onset diabetes of the young on human chromosome 20.
case_report · Level V
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Abstract
A systematic search for genetic linkage with maturity-onset diabetes of the young (MODY) as expressed in the R.-W. pedigree has been carried out. Evidence for linkage was found with restriction-fragment-length polymorphism loci that map to human chromosome 20. Two-point linkage analysis with CRI-L1214 (D20S16) and MODY gave a log of the odds (lod) score of 4.16 at theta = 0.08. Multipoint linkage analysis with nine restriction-fragment-length polymorphism loci resulted in a lod score of 4.81 with the MODY locus in an approximately 20-cM region bounded by D20S16 and D20S14-D20S18. Examination of the pattern of MODY segregation suggests that additional factors, possibly genetic could be involved in the age of onset of the disease.
Medical subject headings
- Chromosomes, Human, Pair 20
- Diabetes Mellitus, Type 2
- Genetic Markers