[NOD2/CARD15 gene polymorphisms and susceptibility to Crohn's disease in Chinese Han population]
Min Gao1, Qian Cao, Ling-he Luo
1GI Division of Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China.
Insights
The NOD2/CARD15 gene variants associated with Crohn's disease (CD) in Caucasians were not found in the Chinese Han population. This study indicates no link between these common NOD2/CARD15 polymorphisms and CD susceptibility in this ethnic group.
Area of Science:
- Genetics
- Gastroenterology
- Immunology
Context:
- Crohn's disease (CD) is a chronic inflammatory bowel disease with a complex genetic basis.
- NOD2/CARD15 gene polymorphisms are established risk factors for CD in Caucasian populations.
- Previous research has shown ethnic variations in the association between NOD2/CARD15 and CD.
Purpose:
- To investigate the association between common NOD2/CARD15 gene polymorphisms and susceptibility to Crohn's disease in the Chinese Han population.
- To determine if the NOD2/CARD15 gene plays a role in CD pathogenesis in this specific ethnic group.
Summary:
- Genotyping for three common NOD2/CARD15 polymorphisms (Arg702Trp, Gly908Arg, Leu1007fsinsC) was performed on 32 CD patients, 110 ulcerative colitis patients, and 292 healthy controls from Zhejiang, China.
- No heterozygous or homozygous single nucleotide polymorphism (SNP) variants of NOD2/CARD15 were detected in CD patients, ulcerative colitis patients, or healthy controls.
- The study found no association between the investigated common NOD2/CARD15 variants and Crohn's disease in the Chinese Han population.
Impact:
- This research highlights the ethnic-specific genetic factors contributing to Crohn's disease.
- Findings suggest that genetic screening for these specific NOD2/CARD15 variants may not be beneficial for diagnosing CD in the Chinese Han population.
- Contributes to a better understanding of the genetic architecture of inflammatory bowel disease across diverse ethnicities.
Objective:
Previous studies have shown NOD2/CARD15 gene is the first susceptibility gene to Crohn's disease (CD), three single nucleotide polymorphisms (SNPs) of the gene have been identified to be associated with CD in the Caucasians, but not in the Japanese. Here we have evaluated the NOD2/CARD gene polymorphisms in Chinese patients to determine whether the gene is associated with susceptibility to CD in Chinese Han population.
Methods:
Blood samples were obtained from 32 patients with CD, 110 patients with ulcerative colitis, and 292 healthy controls in Zhejiang location. Genotyping for 3 common NOD2/CARD15 (Arg702Trp, Gly908Arg, Leu1007fsinsC) polymorphisms was carried out using polymerase chain sequence with specific primer.
Results:
None of the patients with CD had heterozygous or homozygous SNPs variants. Similarly none of the ulcerative colitis or health controls.
Conclusion:
The common variants in NOD2/CARD15 found in Caucasians with CD are not associated with CD in the Chinese Han population.
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