Genetic heterogeneity in Peutz-Jeghers syndrome

Lisa Allyn Boardman, Fergus J Couch, Lawrence J. Burgart, David Schwartz, Rebecca Berry, Shannon K. McDonnell, Daniel J Schaid, Lynn C. Hartmann, Jennifer J. Schroeder, Constantine A. Stratakis, Stephen N Thibodeau

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

LKB1, the human gene encoding a serine threonine kinase, was recently identified as a susceptibility gene for Peutz-Jeghers syndrome (PJS), a disease characterized by the constellation of intestinal hamartomata, oral mucocutaneous hyperpigmentation, and an increased risk for gastrointestinal as well as extraintestinal malignancies. To date, the majority of individuals with PJS have been found to have genetic alterations in LKB1, most of which result in protein truncation. Additionally, linkage analyses have suggested a modicum of genetic heterogeneity, with the majority of PJS families showing linkage to the LKB1 locus. In this study, we evaluated five kindreds with greater than two affected family members, five PJS probands with only one other affected family member, as well as 23 individuals with sporadic PJS for mutations within the LKB1 gene. Conformation sensitive gel electrophoresis was utilized for the initial screen, followed by direct sequence analysis for characterization. Long-range PCR was used for the detection of larger genetic insertions or deletions. Mutation analysis revealed genetic alterations in LKB1 in two probands who had a family history of PJS. LKB1 mutations were detected in only four of the remaining 23 cases of sporadic PJS. These data suggest the presence of significant genetic heterogeneity for PJS and the involvement of other loci in this syndrome. (C) 2000 Wiley-Liss, Inc.

Original languageEnglish (US)
Pages (from-to)23-30
Number of pages8
JournalHuman Mutation
Volume16
Issue number1
DOIs
StatePublished - 2000

Fingerprint

Peutz-Jeghers Syndrome
Genetic Heterogeneity
Mutation
Genes
Hyperpigmentation
Hamartoma
Protein-Serine-Threonine Kinases
Sequence Analysis
Electrophoresis
Gels
Polymerase Chain Reaction

Keywords

  • Linkage analysis
  • LKB1
  • Peutz-Jeghers syndrome
  • PJS
  • Serine-threonine kinase 11
  • STK11

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Genetic heterogeneity in Peutz-Jeghers syndrome. / Boardman, Lisa Allyn; Couch, Fergus J; Burgart, Lawrence J.; Schwartz, David; Berry, Rebecca; McDonnell, Shannon K.; Schaid, Daniel J; Hartmann, Lynn C.; Schroeder, Jennifer J.; Stratakis, Constantine A.; Thibodeau, Stephen N.

In: Human Mutation, Vol. 16, No. 1, 2000, p. 23-30.

Research output: Contribution to journalArticle

Boardman, LA, Couch, FJ, Burgart, LJ, Schwartz, D, Berry, R, McDonnell, SK, Schaid, DJ, Hartmann, LC, Schroeder, JJ, Stratakis, CA & Thibodeau, SN 2000, 'Genetic heterogeneity in Peutz-Jeghers syndrome', Human Mutation, vol. 16, no. 1, pp. 23-30. https://doi.org/10.1002/1098-1004(200007)16:1<23::AID-HUMU5>3.0.CO;2-M
Boardman, Lisa Allyn ; Couch, Fergus J ; Burgart, Lawrence J. ; Schwartz, David ; Berry, Rebecca ; McDonnell, Shannon K. ; Schaid, Daniel J ; Hartmann, Lynn C. ; Schroeder, Jennifer J. ; Stratakis, Constantine A. ; Thibodeau, Stephen N. / Genetic heterogeneity in Peutz-Jeghers syndrome. In: Human Mutation. 2000 ; Vol. 16, No. 1. pp. 23-30.
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