Prognosis and clinical characteristics of dilated cardiomyopathy with family history via pedigree analysis

Kyohei Marume, Teruo Noguchi, Emi Tateishi, Yoshiaki Morita, Hiroyuki Miura, Kunihiro Nishimura, Keiko Ohta-Ogo, Naoaki Yamada, Kenichi Tsujita, Chisato Izumi, Kengo Kusano, Hisao Ogawa, Satoshi Yasuda

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The clinical characteristics and prognostic outcomes of dilated cardiomyopathy (DCM) with a familial history (FHx) via pedigree analysis are unclear. Methods and Results: We conducted a prospective observational study of 514 consecutive Japanese patients with DCM. FHx was defined as the presence of DCM in ≥1 family member within 2-degrees relative based on pedigree analysis. The primary endpoint was a composite of major cardiac events (sudden cardiac death and pump failure death). The prevalence of FHx was 7.4% (n=38). During a median follow-up of 3.6 years, 77 (15%) patients experienced a major cardiac event. Multivariable Cox regression analysis identified FHx as independently associated with major cardiac events (hazard ratio [HR] 4.32; 95% confidence interval [CI], 2.04–9.19; P<0.001) compared with conventional risk factors such as age, QRS duration, and left ventricular volume. In the propensity score-matched cohort (n=38 each), the FHx group had a significantly higher incidence of major cardiac events (HR, 4.48; 95% CI, 1.25–16.13; P=0.022). In addition, the FHx group had a higher prevalence of a diffuse late gadolinium enhancement (LGE) pattern than the no-FHx group (32% vs. 17%, P=0.022). Conclusions: DCM patients with FHx had a worse prognosis, which was associated with a higher prevalence of a diffuse LGE pattern, than patients without FHx.

Original languageEnglish
Pages (from-to)1284-1293
Number of pages10
JournalCirculation Journal
Volume84
Issue number8
DOIs
Publication statusPublished - 2020

Keywords

  • Cardiac events
  • Dilated cardiomyopathy
  • Familial history
  • Late gadolinium enhancement
  • Magnetic resonance

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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