Tafamidis decreased cardiac amyloidosis deposition in patients with Ala97Ser hereditary transthyretin cardiomyopathy: a 12-month follow-up cohort study

Orphanet Journal of Rare Diseases - Tập 18 - Trang 1-9 - 2023
Cheng-Hsuan Tsai1,2, Chi-Chao Chao3, Sung-Tsang Hsieh3, An-Li Yu4,5, Yuan-Kun (Aden) Wu4,5, Mei-Fang Cheng6,7, Ming-Jen Lee3, Chia-Hung Chou8, Chia-Tung Shun9,10, Hsueh-Wen Hsueh3, Jimmy Jyh-Ming Juang4,5, Ping-Huei Tseng11, Mao-Yuan Su12,13, Yen-Hung Lin4,5
1National Taiwan University, College of Medicine, Graduate Institute of Clinical Medicine, Taipei, Taiwan
2Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
3Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
4Division of Cardiology, National Taiwan University Hospital, Taipei, Taiwan
55Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
6Department of Nuclear Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
7Institute of Environmental and Occupational Health Sciences, National Taiwan University, Taipei, Taiwan
8Department of Obstetrics and Gynecology, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
9Department of Forensic Medicine and Pathology, National Taiwan University Hospital, Taipei, Taiwan
10Department of Pathology, Good Liver Clinic, Taipei, Taiwan
11Division of Gastroenterology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
12Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan
13Department of Medical Imaging and Radiological Technology, Yuanpei University of Medical Technology, Hsinchu, Taiwan

Tóm tắt

Transthyretin cardiac cardiomyopathy (ATTR-CM) is a rare but life-threatening disease. Tafamidis is an effective treatment for patients with ATTR-CM, however its long-term effects on cardiac remodeling and cardiac amyloid deposition are unknown. This study aimed to used cardiac magnetic resonance (CMR) to investigate the effects of tafamidis on patients with hereditary A97S ATTR-CM. We retrospectively analyzed a prospective cohort of ATTR-CM patients, including 14 with hereditary A97S ATTR-CM and 17 healthy controls with baseline CMR data. All ATTR-CM patients received tafamidis treatment and received CMR with extracellular volume (ECV) at baseline and after 1 year of follow-up. Baseline N-terminal pro-B-type natriuretic peptide, left ventricular (LV) mass, LV ejection fraction, global radial, circumferential and longitudinal strain, T1 mapping and ECV were significantly worse in the patients with ATTR-CM compared with the healthy controls. After 1 year of tafamidis treatment, ECV decreased from 51.5 ± 8.9% to 49.0 ± 9.4% (P = 0.041), however there were no significant changes in LV mass, LV ejection fraction, global radial strain, global circumferential strain, global longitudinal strain and T1 mapping. After a one-year treatment period, tafamidis exhibited subtle but statistically significant reductions in ECV, potentially indicating a decrease in amyloid deposition among patients diagnosed with hereditary A97S ATTR-CM.

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