Human Genetics

, Volume 111, Issue 1, pp 54–58

SLEB3 in systemic lupus erythematosus (SLE) is strongly related to SLE families ascertained through neuropsychiatric manifestations

  • Swapan K. Nath
  • Jennifer A. Kelly
  • Jeff Reid
  • Tom Lam
  • Courtney Gray-McGuire
  • Bahram Namjou
  • Christopher E. Aston
  • John B. Harley
Original Investigation

DOI: 10.1007/s00439-002-0743-1

Cite this article as:
Nath, S.K., Kelly, J.A., Reid, J. et al. Hum Genet (2002) 111: 54. doi:10.1007/s00439-002-0743-1

Abstract.

Seizures and psychosis are neuropsychiatric (NP) manifestations of a large number of systemic lupus erythematosus (SLE) patients. Since NP manifestations were part of the SLE phenotype for some, but not all SLE affecteds, we hypothesized that those SLE patient families with NP manifestations might be more genetically homogeneous at loci important to NP-related SLE, and hence have increased power to detect linkage. We identified 23 families of European-American (EA) origin and 20 families of African-American (AA) origin, in which at least one SLE patient in each family was diagnosed with the presence of NP manifestations. A total of 318 microsatellite markers at an average marker density of 11 cM were genotyped. Uncertainty of the genetic model led us to perform the initial genome scan by a multipoint non-parametric allele sharing linkage method. Once the evidence of linkage was suggestive, we then performed parametric model-based linkage by maximizing the relevant parameters to define a parsimonious genetic model. We found the maximum multipoint parametric LOD score was 5.19 and the non-parametric linkage score (Zlr) was 3.12 (P=9×10–4) for EA NP pedigrees at 4p16, previously identified as SLEB3. The segregation behavior of this linked locus suggests a dominant mode of inheritance with an almost 100% homogeneous genetic effect in these pedigrees. The results demonstrated a significant increase of LOD score to detect SLEB3 when the families were further ascertained through NP, compared with the analysis of all EA SLE families together.

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • Swapan K. Nath
    • 1
  • Jennifer A. Kelly
    • 2
  • Jeff Reid
    • 2
  • Tom Lam
    • 2
  • Courtney Gray-McGuire
    • 5
  • Bahram Namjou
    • 2
  • Christopher E. Aston
    • 1
  • John B. Harley
    • 1
  1. 1.Genetic Epidemiology Unit, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USAUSA
  2. 2.Arthritis and Immunology Research Program, Oklahoma Medical Research Foundation, 825 N.E. 13th Street, Oklahoma City, OK 73104, USAUSA
  3. 3.Department of Medicine, University of Oklahoma, Oklahoma City, Oklahoma, USAUSA
  4. 4.US Department of Veteran Affairs Medical Center, Oklahoma City, Oklahoma, USAUSA
  5. 5.Case Western Reserve University, Cleveland, Ohio, USAUSA