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Study Identifies Cardiovascular Comorbidities Associated With Dermatomyositis

Doug Brunk

TOPLINE:

Dermatomyositis (DM) is associated with an increased risk for cardiovascular comorbidities, including chronic kidney disease, a new study found.

METHODOLOGY:

  • DM is associated with cardiovascular disease (CVD), but US-based data studies on CVD comorbidities in patients with DM are lacking.
  • In a cross-sectional analysis of participants in the All of Us research program aged 18 years and older with at least 1 year of electronic health record (EHR) data, researchers identified DM cases and controls with nearest neighbor propensity score matching by age, sex, race/ethnicity, EHR duration, and healthcare visit quantity.
  • They used the Pearson's chi-squared test, Fisher's exact test, unpaired t-test, or Mann-Whitney U test to compare clinical characteristics and traditional CV comorbidities.
  • Multivariable conditional logistic regression was used with backward elimination of comorbidities with P > .1 or evidence of collinearity.

TAKEAWAY:

  • Among 235,161 All of Us participants, researchers identified 206 DM cases and 824 matched controls with largely similar demographic characteristics, including smoking status, obesity, and indicators of socioeconomic status.
  • Participants with DM were more likely to have a history of atrial fibrillation (10.1% vs 16.0%, respectively), chronic kidney disease (15.2% vs 29.1%), congestive heart failure (9.6% vs 18.0%), coronary artery disease (CAD) (18.2% vs 34.0%), hypertension (52.5% vs 60.7%), myocardial infarction (7.4% vs 15.0), type 2 diabetes (27.3% vs 47.6%), and valvular heart disease (8.7% vs 16.5%) than matched controls.
  • In a multivariable analysis that adjusted for potential confounders, three comorbidities remained associated with DM: CAD (odds ratio [OR], 2.0; P < .001), type 2 diabetes (OR, 2.2; P < .001), and chronic kidney disease (OR, 1.7; P = .015).

IN PRACTICE:

"Our findings are important both for prognosis and clinical care, suggesting DM patients should be screened for CVD risk factors to potentially reduce the increased risk for cardiovascular events and CVD-related mortality in DM," the authors concluded.

SOURCE:

Corresponding author Alisa N. Femia, MD, of the department of dermatology at NYU Grossman School of Medicine, led the research. The study was published online on December 29, 2023, in the Journal of the American Academy of Dermatology.

LIMITATIONS:

How DM treatments might influence CVD development was not addressed. EHRs may have diagnostic inaccuracies and omissions and lack data on clinical features and severity.

DISCLOSURES:

The project was supported by the National Center for Advancing Translational Sciences, National Institutes of Health. Femia reported consulting fees from Octagon Therapeutics, Timber Pharmaceuticals, and Guidepoint. Study author Michael S. Garshick, MD, reported consulting fees from AbbVie and Horizon Therapeutics. The remaining authors declared no conflicts of interest.

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