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Is Primary Biliary Cholangitis Genetic?
- Heritability
- ~65%
- Inheritance
- polygenic
- Key genes
- HLA-DQB1 IL12A IL12RB2
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Autoimmune bile duct disease with strong HLA associations and heritability of ~65%. First-degree relatives have 100-fold increased risk.
How Genetic Is Primary Biliary Cholangitis?
Primary Biliary Cholangitis involves complex interactions between multiple genes and environmental factors. Heritability estimates range up to 65%, though no single gene determines outcome on its own.
Key genes associated with Primary Biliary Cholangitis: HLA-DQB1 IL12A IL12RB2. 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 Primary Biliary Cholangitis?
Family history can be informative for Primary Biliary Cholangitis, 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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