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Is Psoriatic Arthritis Genetic?
- Heritability
- ~60%
- Inheritance
- polygenic
- Key genes
- HLA-B27 IL12B IL23R
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Inflammatory arthritis associated with psoriasis. Heritability ~60%. If one parent has psoriatic arthritis children have 40% risk of psoriasis.
How Genetic Is Psoriatic Arthritis?
Psoriatic Arthritis involves complex interactions between multiple genes and environmental factors. Heritability estimates range up to 60%, though no single gene determines outcome on its own.
Key genes associated with Psoriatic Arthritis: HLA-B27 IL12B IL23R. 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 Psoriatic Arthritis?
Family history can be informative for Psoriatic Arthritis, 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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