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Ancestral and recombinant 16-locus HLA haplotypes in the Hutterites
1Department of Psychiatry, University of Rochester Medical Center, NY 14642, USA.
Immunogenetics
|June 25, 1999
Summary
Human leukocyte antigen (HLA) haplotype matching influences fetal loss and mate choice in Hutterites. Expanded MHC genotyping revealed more haplotypes, suggesting generalizable effects of HLA on reproductive success and mating patterns.
Area of Science:
- Immunogenetics
- Population genetics
- Reproductive biology
Background:
- Previous studies linked human leukocyte antigen (HLA) haplotype matching to fetal loss and mate preferences in Hutterites.
- Earlier research utilized a five-locus, serologically-defined HLA haplotype (HLA-A, -C, -B, -DR, -DQ).
Purpose of the Study:
- To investigate the impact of specific major histocompatibility complex (MHC) loci and regions on fetal loss and mate choice.
- To expand the characterization of MHC haplotypes in the Hutterite population.
Main Methods:
- Genotyped Hutterites for 14 MHC loci using DNA and biochemical methods.
- Expanded HLA haplotype analysis to include loci from HLA-A to HLA-DPB1.
- Identified recombinant haplotypes and localized crossover sites.
Main Results:
- Increased the number of identified Hutterite MHC haplotypes to 67.
- Successfully localized crossover sites in 9 out of 15 recombinant haplotypes.
- Found Hutterite MHC haplotype sequences to be similar to those in outbred Caucasians.
Conclusions:
- Expanded MHC genotyping refines understanding of Hutterite haplotypes.
- Hutterite MHC haplotype structure resembles outbred Caucasian populations.
- The influence of HLA haplotypes on fetal loss and mating structure may be a general phenomenon.
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