Related Experiment Video
Updated: May 12, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
Genetic variants in CARD8 but not in NLRP3 are associated with ankylosing spondylitis
A Kastbom1, E Klingberg, D Verma
1Rheumatology, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Department of Rheumatology in Östergötland, County Council of Östergötland , Linköping , Sweden.
Insights
The minor allele of CARD8-C10X is associated with a decreased risk of ankylosing spondylitis (AS) in a Swedish population. This genetic factor did not correlate with intestinal inflammation markers or AS disease characteristics.
Area of Science:
- Immunology
- Genetics
- Rheumatology
Background:
- The NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome is crucial for interleukin-1beta (IL-1β) processing in innate immunity.
- Caspase recruitment domain family, member 8 (CARD8) acts as an inhibitor of nuclear factor kappa B (NF-κB) and may be involved in the NLRP3 inflammasome pathway.
Purpose of the Study:
- To investigate the association between single nucleotide polymorphisms (SNPs) in CARD8 and NLRP3 and susceptibility to ankylosing spondylitis (AS).
- To evaluate the impact of these SNPs on AS disease phenotype, including subclinical intestinal inflammation.
Main Methods:
- Genotyping of three NLRP3 SNPs (rs35829419, rs4353135, rs10733113) and one CARD8 SNP (rs2043211) in 492 AS patients and 793 controls from Southern Sweden.
- Assessment of phenotypic characteristics and faecal calprotectin levels in a subgroup of patients to evaluate subclinical intestinal inflammation.
Main Results:
- The minor allele (A) of CARD8-C10X (rs2043211) showed a significant association with decreased AS risk (OR 0.74, p=0.012).
- No significant associations were found between the investigated NLRP3 SNPs and AS susceptibility.
- None of the studied SNPs were associated with faecal calprotectin levels, iritis, anti-TNF therapy response, or peripheral joint involvement.
Conclusions:
- The minor allele of CARD8-C10X is associated with reduced susceptibility to ankylosing spondylitis in the studied Swedish population.
- The investigated CARD8 and NLRP3 SNPs do not appear to influence AS disease phenotype or subclinical intestinal inflammation.
Objectives:
The NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome is important for interleukin-1beta (IL-1β) processing as part of an innate immune response. Caspase recruitment domain family, member 8 (CARD8) is an inhibitor of nuclear factor kappa B (NF-κB) and possibly also a part of the NLRP3 inflammasome. The objective of this study was to evaluate one single nucleotide polymorphism (SNP) in CARD8 and three SNPs in NLRP3 in ankylosing spondylitis (AS) susceptibility and disease phenotype.
Method:
We recruited 492 AS patients from Southern Sweden fulfilling the modified New York criteria for AS, and assessed phenotypic characteristics from medical records and questionnaires. Patients with psoriasis or clinically overt inflammatory bowel disease (IBD) were excluded, as were patients without human leucocyte antigen B27 (HLA-B27). Three NLRP3 SNPs (rs35829419, rs4353135, and rs10733113) and one SNP in CARD8 (rs2043211) were genotyped by commercially available TaqMan assays, and the results compared at genotype and allele levels to those of 793 population-based controls. In a subgroup of the patients (n = 169), faecal calprotectin was assessed as a marker of subclinical intestinal inflammation.
Results:
The minor allele (A) of CARD8-C10X (rs2043211) was associated with a decreased risk of AS in a dominant model [odds ratio (OR) 0.74, 95% confidence interval (CI) 0.54-0.94, p = 0.012] and at the allelic level (OR 0.81, 95% CI 0.68-0.97, p = 0.02), but was not associated with levels of faecal calprotectin. There was no association regarding NLRP3 SNPs and AS susceptibility, and none of the investigated SNPs were associated with iritis, anti-tumour necrosis factor (anti-TNF) therapy, or peripheral joint involvement.
Conclusion:
In a Swedish population, the minor allele of CARD8-C10X is associated with a decreased risk of AS, but not with levels of faecal calprotectin or disease phenotype.
More Related Videos
03:45Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
07:15Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
Published on: January 16, 2019
Related Concept Videos
Genome-wide Association Studies-GWAS
GWAS does not require the identification of the target gene involved in...
Inflammatory Bowel Disease III: Crohn's Disease
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Pharmacogenomics: Identification of New Drug Targets
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Single Nucleotide Polymorphisms-SNPs