Genetic and physical mapping of the McKusick-Kaufman syndrome

Deborah L. Stone, Richa Agarwala, Alejandro A. Schäffer, James L. Weber, David Vaske, Takaya Oda, Settara C. Chandrasekharappa, Clair A. Francomano, Leslie G. Biesecker

Research output: Contribution to journalArticle

Abstract

McKusick-Kaufman syndrome is a human developmental anomaly syndrome comprising mesoaxial or postaxial polydactyly, congenital heart disease and hydrometrocolpos,.This syndrome is diagnosed most frequently in the Old Order Amish population and is inherited in an autosomal recessive pattern with reduced penetrance and variable expressivity. Homozygosity mapping and linkage analyses were conducted using two pedigrees derived from a larger pedigree published in 1978. The PedHunter software query system was used on the Amish Genealogy Database to correct the previous pedigree, derive a minimal pedigree connecting those affected sibships that are in the database and determine the most recent common ancestors of the affected persons. Whole genome short tandem repeat polymorphism (STRP) screening showed homozygosity in 20p12, between D20S162 and D20S894, an area that includes the Alagille syndrome critical region. The peak two-point LOD score was 3.33, and the peak three-point LOD score was 5.21. The physical map of this region has been defined, and additional polymorphic markers have been isolated. The region includes several genes and expressed sequence tags (ESTs), including the jagged1 gene that recently has been shown to be haploinsufficient in the Alagille syndrome. Sequencing of jagged1 in two unrelated individuals affected with McKusick-Kaufman syndrome has not revealed any disease-causing mutations.

Original languageEnglish (US)
Pages (from-to)475-481
Number of pages7
JournalHuman molecular genetics
Volume7
Issue number3
DOIs
StatePublished - Mar 1 1998

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ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

Cite this

Stone, D. L., Agarwala, R., Schäffer, A. A., Weber, J. L., Vaske, D., Oda, T., Chandrasekharappa, S. C., Francomano, C. A., & Biesecker, L. G. (1998). Genetic and physical mapping of the McKusick-Kaufman syndrome. Human molecular genetics, 7(3), 475-481. https://doi.org/10.1093/hmg/7.3.475