Cited by 558Genetic Associations and EpidemiologyGenetic Mapping and Diversity in Plants and AnimalsGenomics and Rare Diseases

Linkage disequilibrium mapping in isolated founder populations: diastrophic dysplasia in Finland

Hästbacka, Johanna, de la Chapelle, Albert, Kaitila, Ilkka, Sistonen, Pertti, Weaver, Alix, Lander, Eric·1992·Nature Genetics

Abstract

Linkage disequilibrium mapping in isolated populations provides a powerful tool for fine structure localization of disease genes. Here, Luria and Delbrück's classical methods for analysing bacterial cultures are adapted to the study of human isolated founder populations in order to estimate (i) the recombination fraction between a disease locus and a marker; (ii) the expected degree of allelic homogeneity in a population; and (iii) the mutation rate of marker loci. Using these methods, we report striking linkage disequilibrium for diastrophic dysplasia (DTD) in Finland indicating that the DTD gene should lie within 0.06 centimorgans (or about 60 kilobases) of the CSF1R gene. Predictions about allelic homogeneity in Finland and mutation rates in simple sequence repeats are confirmed by independent observations.

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Crossref · 10.1038/ng1192-204

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  • Hästbacka et al. mapped the locus associated with diastrophic dysplasia (DTD) in Finland.

    “One of the first successful examples of LD mapping was by Hästbacka et al.128, who mapped the locus associated with diastrophic dysplasia (DTD) in Finland.”
  • In the Finnish population, a majority of DTD cases seemed to be caused by a dominant mutation that had been mapped by conventional methods to 5q31-5q34.

    “In this population a majority of cases seemed to be caused by a dominant mutation that had been mapped by conventional methods to 5q31–5q34.”
  • On a sample of non-DTD chromosomes, the numbers of the four possible haplotypes (11, 12, 21, 22) were 4, 28, 7, and 84; on DTD chromosomes the numbers were 144, 1, 0, and 2.

    “They found that on a sample of non-DTD chromosomes, the numbers of the four possible haplotypes (labelled 11, 12, 21 and 22) were 4, 28, 7, and 84, whereas on a sample of DTD chromosomes the numbers were 144, 1, 0, 2.”
  • LD had decayed little in the 2,000 years (roughly 100 generations) since the founding of the Finnish population.

    “LD had decayed little in the 2,000 years (roughly 100 generations) since the founding of the Finnish population.”
  • Hästbacka et al. surveyed several restriction site polymorphisms in that region and found two that showed strong LD with DTD.

    “Hästbacka et al. surveyed several restriction site polymorphisms in that region and found two that showed strong LD with DTD.”

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Authors
Hästbacka, J., de la Chapelle, A., Kaitila, I., Sistonen, P., Weaver, A., & Lander, E.
Affiliations
  • University of Helsinki (FI)
  • Finnish Red Cross (FI)
  • Whitehead Institute for Biomedical Research (US)
Venue
Nature Genetics
Published
1992-11-01
Volume
2
Issue
3
Pages
204-211
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2073917725
Cited by
558
References
35
Citations by year
2026: 1 · 2025: 3 · 2023: 3 · 2022: 4 · 2021: 3 · 2020: 7 · 2019: 3 · 2018: 3 · 2017: 2 · 2016: 1 · 2015: 5 · 2014: 11 · 2013: 4 · 2012: 5
FWCI
19.55
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
Keywords
association mapping, founder populations, diastrophic dysplasia, Finnish population, mutation rate, microsatellite markers, recombination frequency, disease gene localization
MeSH terms
Base Sequence, Child, Chromosome Mapping, Chromosomes, Human, Pair 5, Female, Finland, Genetic Markers, Genetics, Population, Haplotypes, Humans, Male, Models, Genetic, Molecular Sequence Data, Mutation, Osteochondrodysplasias, Pedigree, Polymorphism, Genetic, Linkage Disequilibrium, Receptor, Macrophage Colony-Stimulating Factor

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