Impact of DCM-Causing Genetic Background on Long-Term Response to Cardiac Resynchronization Therapy

心脏再同步化治疗 期限(时间) 医学 心脏病学 内科学 心力衰竭 物理 射血分数 量子力学
作者
Matteo Dal Ferro,Alessia Paldino,Caterina Gregorio,Riccardo Bessi,Denise Zaffalon,Giulia De Angelis,Giovanni Maria Severini,Davide Stolfo,Marta Gigli,Francesca Brun,Laura Massa,Renata Korcova,S. De Luca,Elisabetta Bianco,Luisa Mestroni,Marco Merlo,Massimo Zecchin,Gianfranco Sinagra
出处
期刊:JACC: Clinical Electrophysiology [Elsevier BV]
卷期号:10 (7): 1455-1464 被引量:1
标识
DOI:10.1016/j.jacep.2024.03.019
摘要

Patients with nonischemic dilated cardiomyopathy (DCM), severe left ventricular (LV) dysfunction, and complete left bundle branch block benefit from cardiac resynchronization therapy (CRT). However, a large heterogeneity of response to CRT is described. Several predictors of response to CRT have been identified, but the role of the underlying genetic background is still poorly explored. In the present study, the authors sought to define differences in LV remodeling and outcome prediction after CRT when stratifying patients according to the presence or absence of DCM-causing genetic background. From our center, 74 patients with DCM subjected to CRT and available genetic testing were retrospectively enrolled. Carriers of causative monogenic variants in validated DCM-causing genes, and/or with documented family history of DCM, were classified as affected by genetically determined disease (GEN+DCM) (n = 25). Alternatively, by idiopathic dilated cardiomyopathy (idDCM) (n = 49). The primary outcome was long-term LV remodeling and prevalence of super response to CRT (evaluated at 24-48 months after CRT); the secondary outcome was heart failure–related death/heart transplant/LV assist device. GEN+DCM and idDCM patients were homogeneous at baseline with the exception of QRS duration, longer in idDCM. The median follow-up was 55 months. Long-term LV reverse remodeling and the prevalence of super response were significantly higher in the idDCM group (27% in idDCM vs 5% in GEN+DCM; P = 0.025). The heart failure–related death/heart transplant/LV assist device outcome occurred more frequently in patients with GEN+DCM (53% vs 24% in idDCM; P = 0.028). Genotyping contributes to the risk stratification of patients with DCM undergoing CRT implantation in terms of LV remodeling and outcomes.
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