Analysis of DNA polymorphism haplotypes linked to the cystic fibrosis locus in North American black and Caucasian families supports the existence of multiple mutations of the cystic fibrosis gene

G. R. Cutting, S. E. Antonarakis, K. H. Buetow, L. M. Kasch, B. J. Rosenstein, H. H. Kazazian

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

Strong linkage disequilibrium (LD) was found between DNA marker XV2c and the cystic fibrosis (CF) locus (δ = 0.46) and between DNA marker KM19 and CF (δ = 0.67) in 157 CF and 138 normal chromosomes from U.S. Caucasians. DNA haplotypes with nine polymorphic sites were created in 54 Caucasian families. There is a strong LD between the haplotypes and the presence of the mutant CF genes. This implies that the DNA polymorphisms examined are close to the CF gene and that one mutation of the CF gene predominates in the Caucasian population. Haplotype analysis can also be used to refine estimates of CF carrier risk in Caucasians. Data for XV2c and MET markers in 16 American black patients and their families revealed a different haplotype distribution and LD pattern with the CF locus. These data suggest that racial admixture alone does not explain the occurrence of CF in American blacks and that multiple alleles of the CF gene may exist in this population.

Original languageEnglish (US)
Pages (from-to)307-318
Number of pages12
JournalAmerican Journal of Human Genetics
Volume44
Issue number3
StatePublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Fingerprint Dive into the research topics of 'Analysis of DNA polymorphism haplotypes linked to the cystic fibrosis locus in North American black and Caucasian families supports the existence of multiple mutations of the cystic fibrosis gene'. Together they form a unique fingerprint.

  • Cite this