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Adjunctive Systemic Corticosteroids for Pulmonary Exacerbations of Cystic Fibrosis.
Annals of the American Thoracic Society 2023 December 15
RATIONALE: Pulmonary exacerbations (PEx) remain the most common cause of morbidity, recurrent hospitalization and diminished survival in people with CF (PWCF), and are characterized by excess inflammation. Corticosteroids are potent, widely available anti-inflammatory drugs. However, corticosteroid efficacy data from randomized controlled trials (RCTs) in PWCF are limited.
OBJECTIVES: To determine whether adjunctive systemic corticosteroid therapy is associated with improved outcomes in acute CF PEx.
METHODS: We performed a secondary analysis of STOP2, a large multicenter RCT of antimicrobial treatment durations for adult PWCF presenting with PEx, that included the use of corticosteroids as a stratification criterion in its randomization protocol. Corticosteroid treatment effects were determined after propensity score-matching for covariates including age, sex, baseline FEV1, genotype and randomization arm. The primary outcome measure was the change in percent predicted FEV1 (ppFEV1). Symptoms, time to next PEx and the incidence of adverse events (AEs) and serious adverse events (SAEs) were assessed as secondary endpoints. Phenotypic factors associated with the clinical decision to prescribe steroids were also investigated.
RESULTS: Corticosteroids were prescribed for 168 of 982 PEx events in STOP2 (17%). Steroid prescription was associated with decreased baseline ppFEV1, increased age, and female sex. Co-treatment with corticosteroids was independent of treatment arm allocation, and did not result in greater mean ppFEV1 response, longer median time to next PEx or more substantial symptomatic improvement compared to propensity-matched PWCF receiving antibiotics alone. AEs were not increased in corticosteroid-treated PWCF. The total number of SAEs - but not the number of corticosteroid-related or PEx-ralated SAEs - was higher among patients receiving corticosteroids.
CONCLUSION: Empiric, physician-directed treatment with systemic corticosteroids, while common, is not associated with improved clinical outcomes in PWCF receiving antibiotics for PEx.
OBJECTIVES: To determine whether adjunctive systemic corticosteroid therapy is associated with improved outcomes in acute CF PEx.
METHODS: We performed a secondary analysis of STOP2, a large multicenter RCT of antimicrobial treatment durations for adult PWCF presenting with PEx, that included the use of corticosteroids as a stratification criterion in its randomization protocol. Corticosteroid treatment effects were determined after propensity score-matching for covariates including age, sex, baseline FEV1, genotype and randomization arm. The primary outcome measure was the change in percent predicted FEV1 (ppFEV1). Symptoms, time to next PEx and the incidence of adverse events (AEs) and serious adverse events (SAEs) were assessed as secondary endpoints. Phenotypic factors associated with the clinical decision to prescribe steroids were also investigated.
RESULTS: Corticosteroids were prescribed for 168 of 982 PEx events in STOP2 (17%). Steroid prescription was associated with decreased baseline ppFEV1, increased age, and female sex. Co-treatment with corticosteroids was independent of treatment arm allocation, and did not result in greater mean ppFEV1 response, longer median time to next PEx or more substantial symptomatic improvement compared to propensity-matched PWCF receiving antibiotics alone. AEs were not increased in corticosteroid-treated PWCF. The total number of SAEs - but not the number of corticosteroid-related or PEx-ralated SAEs - was higher among patients receiving corticosteroids.
CONCLUSION: Empiric, physician-directed treatment with systemic corticosteroids, while common, is not associated with improved clinical outcomes in PWCF receiving antibiotics for PEx.
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