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Auto-immune Addison's disease in identical twins
Postgraduate Medical Journal
|August 1, 1978
Summary
Identical twins presented differently for Addison's disease, with one showing symptoms and the other subclinical adrenal insufficiency. Both exhibited positive adrenal cortex antibodies, suggesting an autoimmune basis.
Area of Science:
- Endocrinology
- Immunology
- Genetics
Background:
- Addison's disease is an autoimmune disorder affecting the adrenal cortex.
- Genetic factors may play a role in the predisposition to autoimmune diseases.
- Discordance in identical twins can elucidate the interplay between genetics and environment.
Observation:
- A case study of identical male twins is presented.
- One twin exhibited overt clinical symptoms of Addison's disease.
- The other twin demonstrated a deficient adrenal cortical response to stimulation tests, indicating subclinical disease.
Findings:
- Both twins possessed positive adrenal cortex antibodies.
- This finding strongly supports an autoimmune etiology for the observed adrenal insufficiency in both individuals.
- The clinical presentation was discordant despite shared genetics.
Implications:
- Autoimmune adrenal insufficiency can manifest with varying clinical severity even in genetically identical individuals.
- Adrenal cortex antibodies serve as a reliable marker for autoimmune adrenal disease.
- Further research into genetic and environmental triggers for autoimmune diseases is warranted.