Related Experiment Video
Updated: May 25, 2026
09:00
High Throughput Sequential ELISA for Validation of Biomarkers of Acute Graft-Versus-Host Disease
Published on: October 31, 2012
Evaluation of published single nucleotide polymorphisms associated with acute GVHD
Jason W Chien1, Xinyi Cindy Zhang, Wenhong Fan
1Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA. jchien@fhcrc.org
Blood
|January 28, 2012
Summary
Genetic analysis of hematopoietic cell transplantation (HCT) identified IL6 donor genotype as a risk factor for acute graft-versus-host disease (aGVHD). Imputed SNP data enhances genetic association studies.
Area of Science:
- Immunogenetics
- Transplantation immunology
- Genomics
Background:
- Acute graft-versus-host disease (aGVHD) remains a significant complication following allogeneic hematopoietic cell transplantation (HCT).
- Identifying genetic risk factors can improve patient outcomes and inform donor selection.
- Previous studies have suggested associations between specific genetic polymorphisms and aGVHD risk.
Purpose of the Study:
- To evaluate candidate genetic associations with acute graft-versus-host disease (aGVHD) using genome-wide single-nucleotide polymorphism (SNP) data.
- To assess the utility of imputed SNP data in genetic association studies for HCT.
- To validate previously reported genetic associations and identify novel risk factors for aGVHD.
Main Methods:
- Genome-wide scans were performed on 1298 allogeneic HCT donors and recipients.
- Genotyped and imputed SNP data were analyzed for associations with aGVHD grades IIb-IV and III-IV.
- Univariate and multivariate models (allelic, recessive, dominant) were used, stratified by donor type.
Main Results:
- The IL6 donor genotype (rs1800795) was associated with increased risk for grade IIb-IV aGVHD after unrelated HCT (allelic P = .011, recessive P = .0013).
- The IL6 donor genotype was linked to a 60% increased risk for grade III-IV aGVHD after related HCT (P = .028).
- Imputed SNP data successfully replicated previous IL10 associations; other candidate genes (IL2, CTLA4, HPSE, MTHFR) showed inconsistent results.
Conclusions:
- The IL6 donor genotype is a significant risk factor for acute graft-versus-host disease.
- Imputed SNP data offers advantages for genetic association studies in HCT.
- Validation of genetic associations is crucial in transplantation research.
Related Concept Videos
01:11Genome-wide Association Studies-GWAS
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
01:05Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...