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Randomized Controlled Trial
. 2013 Jun;6(3):179-83.
doi: 10.1111/cts.12041. Epub 2013 Apr 24.

Family history of dilated cardiomyopathy among patients with heart failure from the HF-ACTION genetic ancillary study

Laura Hudson  1 , Ana Morales, Ana Clara Mauro, David Whellan, Kirkwood F Adams, Christopher M O'Connor, Ray E Hershberger
Affiliations
Randomized Controlled Trial

Family history of dilated cardiomyopathy among patients with heart failure from the HF-ACTION genetic ancillary study

Laura Hudson et al. Clin Transl Sci. 2013 Jun.

Abstract

Background: The value of family history (FH) is well established, but its sensitivity to detect familial dilated cardiomyopathy (FDC) has been infrequently examined.

Methods: A genetic ancillary study was created as a component of the HF-ACTION trial, a multicenter, prospective, randomized clinical trial of exercise in patients with heart failure and an ejection fraction <35%. A FH-based study using a structured questionnaire mailed to all consenting individuals was incorporated into the genetic ancillary. FH responses were analyzed for dilated cardiomyopathy (DCM) in family members.

Results: Of the 741 individuals with data available, 358 (48.3%) had nonischemic and 383 (51.6%) had ischemic etiology, and of these 164 (45.8%) and 201 (52.4%), respectively, returned evaluable questionnaires. Of those with nonischemic etiology, 14/164 (8.5%) reported at least one first-degree family member with DCM or an enlarged heart; another 21/164 (12.8%) reported a FH of "cardiomyopathy," a less specific term to indicate DCM.

Conclusion: At least 8.5% of patients with nonischemic etiology in the HF-ACTION genetic ancillary study provided FH indicating familial DCM, information important to inform further genetic analyses of this cohort and to plan other studies.

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References

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Publication types

Supplementary concepts