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NOD2-Related Multisystem Inflammatory Disorders and Recent Advances
Di Wu1, Tomoko Matsuda2, Danielle Xie3
1Department of Rheumatology and Immunology, Peking Union Medical College Hospital, Beijing, China.
Current Rheumatology Reports
|February 12, 2026
Summary
Nucleotide-binding oligomerization domain-containing protein 2 (NOD2) gene variants are linked to Blau syndrome and Yao syndrome. NOD2 plays a role in innate and adaptive immunity, with specific variants influencing disease phenotypes.
Area of Science:
- Immunology
- Genetics
- Human Diseases
Background:
- Nucleotide-binding oligomerization domain-containing protein 2 (NOD2) is a key intracellular innate immune sensor.
- Genetic variants in NOD2 are associated with various human diseases.
- NOD2's roles in immunity and disease pathogenesis are extensively studied.
Purpose of the Study:
- To provide a comprehensive review of diseases associated with NOD2 variants.
- To elucidate the biomedical and immunological roles of NOD2.
- To discuss the link between NOD2 variants and conditions like Blau syndrome and Yao syndrome.
Main Methods:
- Review of existing literature on NOD2 variants and associated diseases.
- Analysis of genetic studies, including case-control and haplotype analyses.
- Functional studies on NOD2's role in innate and adaptive immune responses.
Main Results:
- NOD2 variants are causative for Blau syndrome and associated with Crohn's disease.
- Yao syndrome (YAOS) is a novel disease linked to specific NOD2 variants, including those common in Crohn's disease.
- Functional studies confirm NOD2's involvement in both innate and adaptive immunity, with genotype-phenotype correlations observed.
Conclusions:
- Specific NOD2 variants contribute to diverse disease phenotypes, including Blau syndrome, Crohn's disease, and Yao syndrome.
- Understanding NOD2's dual role in innate and adaptive immunity is crucial for disease management.
- Further research is needed to explore NOD2's impact on adaptive immunity and its interplay with innate responses.
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