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Left ventricular non-compaction in identical twins with thalassaemia and cardiac iron overload

Matthew Luckie1, Bruce Irwin, Satheesh Nair

  • 1Manchester Heart Centre, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK. mluckie@doctors.net.uk

European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology
|December 19, 2008
PubMed

Insights

Transfusion-dependent beta-thalassaemia major can cause cardiac issues, including left ventricular dysfunction. A novel finding in affected twins was left ventricular non-compaction, previously unassociated with this condition.

Area of Science:

  • Cardiology
  • Hematology
  • Genetics

Background:

  • Transfusion-dependent beta-thalassaemia major is a genetic blood disorder requiring lifelong treatment.
  • Cardiac complications are a significant cause of morbidity and mortality in these patients.
  • Common cardiac issues include left ventricular hypertrophy and impaired systolic/diastolic function due to iron overload.

Observation:

  • A family cohort, including identical twins with beta-thalassaemia major, underwent cardiac assessment.
  • Cardiac magnetic resonance imaging revealed significant myocardial iron overload and reduced systolic function.
  • Echocardiography demonstrated severe left ventricular systolic and diastolic dysfunction.

Findings:

  • A previously unrecognized cardiac finding of left ventricular non-compaction was observed in affected individuals.
  • This finding was present in identical twins, suggesting a potential genetic or shared environmental influence.
  • The combination of iron overload, systolic/diastolic dysfunction, and non-compaction presents a unique cardiac profile.

Implications:

  • Left ventricular non-compaction may be an under-recognized cardiac manifestation in beta-thalassaemia major.
  • This finding necessitates a broader cardiac evaluation in patients with transfusion-dependent beta-thalassaemia major.
  • Further research is needed to elucidate the mechanisms linking beta-thalassaemia, iron overload, and left ventricular non-compaction.

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