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Is Inflammatory Bowel Disease Genetic?
- Heritability
- ~70%
- Inheritance
- polygenic
- Key genes
- NOD2 IL23R ATG16L1
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Includes Crohn's disease and ulcerative colitis. Heritability ~70%. Over 240 genetic risk loci identified; NOD2 was the first replicated IBD gene.
How Genetic Is Inflammatory Bowel Disease?
Inflammatory Bowel Disease involves complex interactions between multiple genes and environmental factors. Heritability estimates range up to 70%, though no single gene determines outcome on its own.
Key genes associated with Inflammatory Bowel Disease: NOD2 IL23R ATG16L1. Variants in these genes have been identified through genome-wide association studies (GWAS) and clinical research as influencing susceptibility or severity.
Source: MedlinePlus Genetics
Does Family History Matter for Inflammatory Bowel Disease?
Family history can be informative for Inflammatory Bowel Disease, but its predictive power is limited because many genes — each with small effects — combine with environmental influences. A family history of the condition may prompt earlier or more frequent screening.
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