Clinical cardiovascular phenotypes and the pattern of future events in patients with type 2 diabetes

Mariam Elmegaard Malik1, Charlotte Andersson2, Paul Blanche3,4

  • 1Department of Cardiology, Herlev and Gentofte University Hospital, Cardiovascular Research Unit 1-Post 635, Gentofte Hospitalsvej 1, 2900, Hellerup, Denmark. mariam.elmegaard.malik@regionh.dk.

Abstract

Insights

Patients with type 2 diabetes (T2D) and cardiovascular disease have varying risks for future heart failure (HF) or atherothrombotic events. Understanding a patient's specific cardiovascular phenotype is key to predicting their risk pattern.

Area of Science:

  • Cardiology
  • Endocrinology
  • Public Health

Background:

  • Updated guidelines recommend SGLT2i for heart failure risk and GLP1-RA for atherothrombotic risk in type 2 diabetes (T2D).
  • Risk stratification is crucial for optimizing cardiovascular event prevention in T2D patients with established cardiovascular disease.

Purpose of the Study:

  • To estimate the risk of different cardiovascular events in patients with T2D and newly diagnosed cardiovascular disease.
  • To analyze the 5-year risk of heart failure (HF) or atherothrombotic events based on initial cardiovascular phenotype.

Main Methods:

  • Danish healthcare registers identified 37,850 patients with T2D and new-onset cardiovascular disease (1998-2016).
  • Patients were categorized into four phenotypes: HF, ischemic heart disease (IHD), transient ischemic stroke (TIA)/ischemic stroke, or peripheral artery disease (PAD).
  • Absolute 5-year risks of subsequent HF, atherothrombotic events, and death were calculated.

Main Results:

  • Patients initially diagnosed with HF had a higher risk of subsequent HF (17.9%) than atherothrombotic events (15.8%).
  • Those with IHD faced a higher risk of atherothrombotic events (24.6%) but a substantial risk of HF (10.6%).
  • PAD patients had a low HF risk (4.4%) but high atherothrombotic risk (15.9%), while TIA/stroke patients had the lowest HF risk (3.2%) and highest atherothrombotic risk (20.6%).

Conclusions:

  • A patient's cardiovascular phenotype in type 2 diabetes (T2D) significantly predicts the pattern of future cardiovascular events.
  • This phenotype-based risk assessment can inform targeted preventive strategies, such as SGLT2i or GLP1-RA use.

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