Prevention of Cardiovascular and Other Systemic Adverse Outcomes in Patients with Asthma Treated with Biologics

Abstract

Rationale: Although clinical trials have documented the oral corticosteroid (OCS)-sparing effect of biologics in patients with severe asthma, little is known about whether this translates to a reduction of new-onset OCS-related adverse outcomes. Objective: To compare the risk of developing new-onset OCS-related adverse outcomes between biologic initiators and noninitiators. Methods: This was a longitudinal cohort study using pooled data from the International Severe Asthma Registry (ISAR; 16 countries) and the Optimum Patient Care Research database (OPCRD; United Kingdom). For biologic initiators, the index date was the date of biologic initiation. For noninitiators, it was the date of enrollment (for ISAR) or a random medical appointment date (for OPCRD). Inverse probability of treatment weighting was used to improve comparability between groups, and weighted Cox proportional hazard models were used to estimate the hazard ratios (HRs) of developing OCS-related adverse outcomes for up to 5 years from the index date. Measurements and Main Results: A total of 42,908 patients were included. Overall, 27.3% and 4.7% of biologic initiators and noninitiators were long-term OCS users (daily intake ⩾90 consecutive days in year before the index date), with a mean prednisolone-equivalent daily dose of 10.2 mg and 6.2 mg, respectively. Compared with noninitiators, biologic initiators had decreased rate of developing any OCS-related adverse outcome (HR [95% confidence interval (CI)]: 0.82 [0.72-0.93]; P = 0.002), primarily driven by reduced rate of developing diabetes (0.62 [0.45-0.87]; P = 0.006), major cardiovascular events (0.65 [0.44-0.97]; P = 0.034), and anxiety and/or depression (0.68 [0.55-0.85]; P = 0.001). There were no significant differences in the rates of new-onset cataract (HR, 0.77 [95% CI, 0.47-1.25]), sleep apnea (HR, 0.82 [95% CI, 0.78-1.41]), or other OCS-related adverse outcomes assessed (e.g., osteoporosis). The results were consistent across both datasets. Conclusions: Our findings highlight the role for biologics in preventing new-onset OCS-related adverse outcomes in patients with severe asthma.

Keywords: adverse cardiac event; cohort studies; diabetes mellitus.