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Updated: Feb 27, 2026

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Published on: September 5, 2011
Twin Hearts in Identical Twins
John Papanikolaou1, Nikolaos Platogiannis, Nikolaos Nikoloulis
1Biopolis, 41110 Larissa, Thessaly, Greece. y_papanikolaou@hotmail.com.
Insights
Identical twins often show similar coronary artery disease patterns and timing. Evaluating the other twin is recommended when one presents with early-onset coronary artery disease.
Area of Science:
- Cardiology
- Genetics
- Twin Studies
Background:
- Coronary artery disease (CAD) in identical twins is rare and findings are controversial.
- Previous reports on cardiac manifestations and angiographic characteristics in twins are limited and conflicting.
Purpose of the Study:
- To report a rare case of coronary artery disease in identical twins.
- To highlight striking similarities in clinical presentation, anatomy, and disease distribution between twins.
Main Methods:
- Case report of a monozygotic twin pair.
- Clinical assessment and angiographic analysis of coronary artery disease.
Main Results:
- Demonstrated remarkable concordance in the timing and type of CAD manifestation.
- Observed similar underlying coronary anatomy and disease distribution in both twins.
Conclusions:
- This case supports a genetic predisposition in coronary artery disease development in identical twins.
- Routine evaluation of the co-twin is a reasonable approach when one twin presents with premature coronary artery disease.
Abstract:
Cardiac manifestations and angiographic characteristics of coronary artery disease in identical twins have been previously dealt with in a handful of case reports and series; yet, the results were highly controversial. Our rare case demonstrates striking similarities in both the timing and type of clinical manifestation, as well as in the underlying anatomy and the distribution of coronary artery disease. When premature coronary artery disease is found in one of a monozygotic twin pair, evaluating the other twin is a reasonable approach.
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