Cardiovascular Events in Patients with Severe Asthma—A Retrospective Study of Two Cohorts: Asthma Type T2 Treated with Biologics and Non-Type T2

Abstract

Background: The prevalence of cardiovascular events (CVEs) in patients with asthma varies amongst studies, with little evidence as to their prevalence in patients treated with monoclonal antibodies (mAbs). In this retrospective, observational study, we aimed to evaluate the prevalence of CVEs in patients with T2 and non-T2 asthma and to identify risk factors associated with CVEs. Methods: A total of 206 patients with severe asthma were included. Demographic variables, respiratory comorbidities and cardiovascular risk factors were collected, along with respiratory function, laboratory parameters and respiratory pharmacotherapy, including treatment with mAbs. Results: A total of 10.7% of the patients had any CVE from the date of asthma diagnosis, with a higher risk in those patients with chronic obstructive pulmonary disease (odds ratio [OR] = 5.36, 95% CI 1.76–16.31; p = 0.003), arterial hypertension (OR = 2.71, 95% CI 1.13–6.55; p = 0.026) and dyslipidaemia (OR = 9.34, 95% CI 3.57–24.44; p < 0.001). No association between mAb treatment and a CVE or between time of mAb treatment and the event was found. No significant differences were observed between the T2 and non-T2 cohort. After a multivariate analysis, dyslipidaemia was identified as an independent risk factor (OR = 13.33, 95% CI 4.49–39.58; p < 0.001), whereas regular use of inhaled corticosteroids was associated with a reduced risk of a CVE (OR = 0.103, 95% CI 0.021–0.499; p = 0.005). Further research is needed to fully understand the relationship between severe asthma and CVEs. Conclusions: This study suggests that patients with severe asthma experience a higher percentage of CVEs compared with the general population.