Cardiothoracic Unit, Great Ormond Street Hospital for Children NHS Trust, Great Ormond Street, London WC1N 3JH, UK.
Barth syndrome is an X-linked recessive disorder comprising dilated cardiomyopathy, muscular hypotonia, and cyclical neutropenia. Affected children usually die during infancy as a consequence of septicemia, cardiac failure, or both. We report a patient with Barth syndrome who underwent successful heart transplantation.