Abstract
Triglyceride deposit cardiomyovasculopathy (TGCV) is an intractable disease characterized by massive triglyceride (TG) accumulation in the myocardium and coronary arteries caused by genetic or acquired dysfunction of adipose TG lipase (ATGL). A phase IIa trial has been conducted involving patients with idiopathic TGCV using CNT-01 (tricaprin/trisdecanion) by the Japan TGCV study group, which showed that CNT-01 improved myocardial lipolysis as demonstrated by iodine-123-beta-methyl iodophenyl-pentadecanoic acid (BMIPP) scintigraphy. We evaluated changes in myocardial TG content using proton magnetic resonance spectroscopy (1H-MRS) before/after CNT-01. This report describes a male patient with hypertension, diabetes, angina pectoris, repeated percutaneous coronary intervention, chest pain, and exertional dyspnea that persisted despite standard medications and nitroglycerin. Idiopathic TGCV was diagnosed based on a remarkably reduced washout rate (WR) for BMIPP scintigraphy, high myocardial TG content on 1H-MRS, and no ATGL mutation. After an 8-week, 1.5 g/day CNT-01 administration, the WR of BMIPP increased from 5.1 to 13.3% and the myocardial TG content decreased from 8.4 to 5.9%, with no adverse effects. CNT-01 corrected myocardial lipolysis and subsequently reduced TG content in idiopathic TGCV as evaluated using 1H-MRS, which may be a useful, noninvasive evaluation of therapeutic efficacy. Triglyceride deposit cardiomyovasculopathy (TGCV) is an intractable disease characterized by massive triglyceride accumulation in the myocardium and coronary arteries, caused by genetic or acquired dysfunction of adipose triglyceride lipase. Japan TGCV Study Group developed a specific treatment for idiopathic TGCV using CNT-01 (tricaprin/trisdecanion), a type of medium-chain fatty acid. CNT-01 corrected myocardial lipolysis and reduced TG content in idiopathic TGCV using proton magnetic resonance spectroscopy, which may be a useful noninvasive evaluation of therapeutic efficacy.
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