Thavendiranathan, P and Negishi, T and Somerset, E and Negishi, K and Penicka, M and Lemieux, J and Aakhus, S and Miyazaki, S and Shirazi, M and Galderisi, M and Marwick, TH, SUCCOUR Investigators, Strain guided management of potentially cardiotoxic cancer therapy, Journal of the American College of Cardiology, 77, (4) pp. 392-401. ISSN 0735-1097 (2021) [Refereed Article]
Copyright 2021 The American College of Cardiology Foundation
Background: In patients at risk of cancer therapy-related cardiac dysfunction (CTRCD), initiation of cardioprotective therapy (CPT) is constrained by the low sensitivity of ejection fraction (EF) for minor changes in left ventricular (LV) function. Global longitudinal strain (GLS) is a robust and sensitive marker of LV dysfunction, but existing observational data have been insufficient to support a routine GLS-guided strategy for CPT.
Methods: In this international, multicenter, prospective, randomized controlled trial, 331 anthracycline-treated patients with another heart failure risk factor were randomly allocated to CPT initiation guided by either>=12% relative reduction in GLS (n = 166) or >10% absolute reduction of LVEF (n = 165). Patients were followed for EF and development of CTRCD (symptomatic EF reduction of >5% or >10% asymptomatic to <55%) over 1 year.
Results: Of 331 randomized patients, 2 died, and 22 withdrew consent or were lost to follow-up. Among 307 patients (age: 54 +- 12 years; 94% women; baseline LVEF: 59 +- 6%; GLS: -20.6 +- 2.4%) with a median (interquartile range) follow-up of 1.02 years (0.98 to 1.07 years), most (n = 278) had breast cancer. Heart failure risk factors were prevalent: 29% had hypertension, and 13% had diabetes mellitus. At the 1-year follow-up, although the primary outcome of change in LVEF was not significantly different between the 2 arms, there was significantly greater use of CPT, and fewer patients met CTRCD criteria in the GLS-guided than the EF-guided arm (5.8% vs. 13.7%; p = 0.02), and the 1-year EF was 57 +- 6% versus 55 +- 7% (p = 0.05). Patients who received CPT in the EF-guided arm had a larger reduction in LVEF at follow-up than in the GLS-guided arm (9.1 +- 10.9% vs. 2.9 +- 7.4%; p = 0.03).
Conclusions: Although the change in LVEF was not different between the 2 arms as a whole, when patients who received CPT were compared, those in the GLS-guided arm had a significantly lower reduction in LVEF at 1 year follow-up. Furthermore, GLS-guided CPT significantly reduced a meaningful fall of LVEF to the abnormal range. The results support the use of GLS in surveillance for CTRCD. (Strain Surveillance of Chemotherapy for Improving Cardiovascular Outcomes [SUCCOUR]; ACTRN12614000341628).
|Item Type:||Refereed Article|
|Keywords:||cancer therapy related cardiac dysfunction, cardioprotective therapy, global longitudinal strain, heart failure|
|Research Division:||Biomedical and Clinical Sciences|
|Research Group:||Cardiovascular medicine and haematology|
|Research Field:||Cardiology (incl. cardiovascular diseases)|
|Objective Group:||Clinical health|
|Objective Field:||Prevention of human diseases and conditions|
|UTAS Author:||Negishi, T (Dr Tomoko Negishi)|
|UTAS Author:||Negishi, K (Dr Kazuaki Negishi)|
|UTAS Author:||Marwick, TH (Professor Tom Marwick)|
|Web of Science® Times Cited:||89|
Repository Staff Only: item control page