Incidence of Coronary Artery Disease in Myelodysplastic Syndrome
Patients with MDS have an 86% increased risk of developing coronary artery disease compared to the general population, with a hazard ratio of 1.86 for composite cardiovascular events including ischemic heart disease. 1
Specific Incidence Data
The most robust evidence comes from a 2026 nationwide Japanese cohort study of over 1.1 million individuals, which provides the clearest quantification of cardiovascular risk in MDS patients:
- Ischemic heart disease (IHD): 62% increased risk (HR 1.62,95% CI 1.18-2.23) 1
- Composite cardiovascular disease: 86% increased risk (HR 1.86,95% CI 1.57-2.20) 1
- This elevated risk persists regardless of age, sex, or anemia status 1
Cardiovascular Burden in Older Adults (>60 years)
Among Medicare beneficiaries aged ≥65 years with MDS, the cardiovascular disease burden is substantial:
- 73.2% of MDS patients experienced cardiac-related events during 3-year follow-up, compared to 54.5% in the general Medicare population 2
- Age-adjusted odds ratio of 2.10 for cardiac events (P < .01) 2
- The median age of MDS patients is 77 years, placing most patients in the high-risk cardiovascular age group 3
Clinical Context and Risk Factors
MDS should be recognized as an independent cardiovascular risk factor in clinical practice 1. The association between MDS and cardiovascular disease is multifactorial:
Molecular Predictors
- ASXL1 mutations are independently associated with increased vascular disease risk (P = .013) 4
- Clonal hematopoiesis, the precursor to MDS, represents a novel cardiovascular risk factor 5
Treatment-Related Factors
- Erythropoiesis-stimulating agents (ESAs) are independently associated with higher cardiovascular mortality risk 6
- Lower ferritin levels paradoxically correlate with increased vascular events (P = .043), suggesting that optimal transfusion strategies need reconsideration 4
Protective Factors
- Trisomy 8 in lower-risk MDS (IPSS-R) appears protective against vascular events (P = .036) 4
Comorbidity Burden Beyond Coronary Disease
The cardiovascular complications extend beyond coronary artery disease:
- Heart failure: 81% increased risk (HR 1.81,95% CI 1.47-2.23) 1
- Atrial fibrillation: 126% increased risk (HR 2.26,95% CI 1.52-3.38) 1
- Stroke: 82% increased risk (HR 1.82,95% CI 1.32-2.50) 1
Critical Clinical Pitfalls
Do not attribute cardiovascular symptoms solely to MDS-related anemia or cytopenia. The elevated cardiovascular risk is independent of anemia status 1. Aggressive cardiovascular risk factor management is warranted in all MDS patients, particularly those with:
Rural MDS patients face 12-25% higher cardiovascular mortality compared to urban patients, with younger patients (<65 years) showing the greatest disparity (HR 1.25) 5. This geographic disparity is not explained by demographic factors or MDS risk stratification.
Mortality Impact
The 3-year age-adjusted survival for MDS patients is 60.0% compared to 84.7% in the general Medicare population (HR 3.08, P < .001) 2. Cardiovascular disease emerges as a major cause of death in MDS patients 6, particularly in lower-risk MDS where patients survive long enough to experience cardiovascular complications.