Publication Date:
1985-11-29
Description:
A polymorphic DNA marker has been found genetically linked, in a set of 39 human families, to an autosomal recessive gene that causes cystic fibrosis (CF), a disease affecting one in 2000 Caucasian children. The DNA marker (called D0CRI-917) is also linked to the PON locus, which by independent evidence is linked to the CF locus. The best estimates of the genetic distances are 5 centimorgans between the DNA marker and PON and 15 centimorgans between the DNA marker and the CF locus, meaning that the location of the disease gene has been narrowed to about 1 percent of the human genome (about 30 million base pairs). Although the data are consistent with the interpretation that a single locus causes cystic fibrosis, the possibility of genetic heterogeneity remains. The discovery of a linked DNA polymorphism is the first step in molecular analysis of the CF gene and its causative role in the disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsui, L C -- Buchwald, M -- Barker, D -- Braman, J C -- Knowlton, R -- Schumm, J W -- Eiberg, H -- Mohr, J -- Kennedy, D -- Plavsic, N -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1054-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997931" target="_blank"〉PubMed〈/a〉
Keywords:
Aryldialkylphosphatase
;
Chromosome Mapping
;
Cloning, Molecular
;
Cystic Fibrosis/*genetics
;
DNA Restriction Enzymes
;
Genetic Linkage
;
Humans
;
Pedigree
;
Phosphoric Monoester Hydrolases/genetics
;
Polymorphism, Genetic
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
