Abstract
Abstract AIMS It is uncertain whether the elevated cardiovascular diseases (CVD) risks in patients with brain tumours is due to differences in the distribution of risk factors. We compared CVD risks among patients with a primary brain tumour to a matched general population cohort. METHOD Using data from the Secured Anonymised Information Linkage (SAIL) Databank in Wales, we identified adults aged ≥18 years with a diagnosis of brain tumour identified in the cancer registry between 2000-2014, and a matched cohort (case-to-control ratio 1:5) by age, sex and primary care provider from the general population. Outcomes included fatal and non-fatal major vascular events and venous thromboembolism (VTE). We used multivariable Cox models adjusted for clinical risk factors to compare risks. RESULTS There were 2,869 and 3,931 people diagnosed with malignant and non-malignant brain tumours, respectively, in Wales. They were matched to 33,785 controls. Within the first year of tumour diagnosis, malignant tumour was associated with VTE (hazard ratio [HR] 21.58, 95% confidence interval 16.12-28.88) and stroke (HR 3.32, 2.44-4.53). People with malignant tumour surviving one year had higher risks of VTE (HR 2.20, 1.52-3.18) and stroke (HR 1.45, 1.00-2.10) compared to their matched controls. Individuals with non-malignant tumours had higher risks of VTE (HR 3.72, 2.73-5.06), stroke (HR 4.06, 3.35-4.93) and aortic and peripheral arterial disease (HR 2.09, 1.26-3.48) within the first year of diagnosis compared with their controls. CONCLUSION The elevated risks of CVD suggest risk reduction a potential strategy to improve life quality and survival in people with malignant and non-malignant brain tumour.
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