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Is Alpha-1 Antitrypsin Deficiency Genetic?
- Heritability
- ~100%
- Inheritance
- autosomal-recessive
- Key genes
- SERPINA1
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A common hereditary condition causing lung and liver disease. The PiZZ genotype carries the highest risk for emphysema and liver cirrhosis.
How Genetic Is Alpha-1 Antitrypsin Deficiency?
Alpha-1 Antitrypsin Deficiency has a strong genetic basis. Research estimates heritability at approximately 100%, meaning genetic factors account for the majority of variation in whether individuals develop this condition.
Key genes associated with Alpha-1 Antitrypsin Deficiency: SERPINA1. 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 Alpha-1 Antitrypsin Deficiency?
Yes — family history is one of the strongest predictors of Alpha-1 Antitrypsin Deficiency. If a first-degree relative (parent, sibling, or child) has been diagnosed, your own risk may be significantly elevated. Discussing your family history with a healthcare provider or genetic counsellor is strongly recommended.
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