Observational studyESC heart failure2026
Characterizing clinically recognized hypertrophic cardiomyopathy in six European countries using real-world data.
Observational study in ESC heart failure, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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26 authors.
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Abstract
BACKGROUND AND
aimsHypertrophic cardiomyopathy (HCM) is the most common inherited cardiomyopathy. However, large-scale epidemiological evidence remains scarce due to challenges in real-world disease recognition. This study aimed to characterize clinically recognized HCM and obstructive HCM (oHCM) across six European countries regarding prevalence, demographics, and clinical characteristics.
methodsWe conducted a retrospective cohort study using routinely collected healthcare data from six European countries, all mapped to the Observational Medical Outcomes Partnership (OMOP) Common Data Model within the DARWIN EU® network: CPRD-GOLD (UK), DK-DHR (Denmark), InGef RDB (Germany), NAJS (Croatia), NLHR (Norway), and SIDIAP (Spain). Clinically recognized HCM was defined based on recorded diagnoses captured in routine healthcare data, rather than on imaging-, haemodynamic-, or genotype-confirmed population screening. Adults (≥18 years) with a first recorded HCM or oHCM diagnosis after 2010 were included. We estimated annual period prevalence and described recorded comorbidities, diagnostic measurements, and treatments before, at, and after diagnosis.
resultsAmong 40 277 individuals with HCM, 12 363 (31%) were first diagnosed with oHCM. Females were older than males at diagnosis (median 67-78 vs 57-68 years). Annual period prevalence increased over time, ranging from 0.04% (95% Confidence interval: 0.04-0.05) to 0.24% (0.23-0.24) in recent years. Prevalence was higher in males, but differences diminished among those aged ≥80 and with oHCM. Cardiovascular comorbidities were frequently recorded before and at the time of first diagnosis, especially hypertension, cardiac arrhythmias, ischaemic heart disease, and heart failure. Beta-blockers, diuretics, and angiotensin-converting enzyme inhibitors were the most common treatments. Most comorbidities and treatments were recorded over a year before HCM diagnosis.
conclusionsAn increase in the prevalence of clinically recognized HCM across Europe was observed over time. This trend is likely multifactorial and may reflect changes in disease recognition, clinical practice, demographics, database-related factors, and potentially the underlying disease burden. Cardiovascular comorbidities and treatments were frequently recorded prior to diagnosis, which may suggest that some patients would benefit from increased diagnostic awareness.
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