Longitudinal stability of asthma characteristics and biomarkers from the Airways Disease Endotyping for Personalized Therapeutics (ADEPT) study

BACKGROUND: Asthma is a biologically heterogeneous disease and development of novel therapeutics requires understanding of pathophysiologic phenotypes. There is uncertainty regarding the stability of clinical characteristics and biomarkers in asthma over time. This report presents the longitudinal stability over 12 months of clinical characteristics and clinically accessible biomarkers from ADEPT. METHODS: Mild, moderate, and severe asthma subjects were assessed at 5 visits over 12 months. Assessments included patient questionnaires, spirometry, bronchodilator reversibility, fractional exhaled nitric oxide (FENO), and biomarkers measured in induced sputum. RESULTS: Mild (n = 52), moderate (n = 55), and severe (n = 51) asthma cohorts were enrolled from North America and Western Europe. For all clinical characteristics and biomarkers, group mean data showed no significant change from visit to visit. However, individual data showed considerable variability. FEV1/FVC ratio showed excellent reproducibility while pre-bronchodilator FEV1 and FVC were only moderately reproducible. Of note bronchodilator FEV1 reversibility showed low reproducibility, with the nonreversible phenotype much more reproducible than the reversible phenotype. The 7-item asthma control questionnaire (ACQ7) demonstrated moderate reproducibility for the combined asthma cohorts, but the uncontrolled asthma phenotype (ACQ7 > 1.5) was inconstant in mild and moderate asthma but stable in severe asthma. FENO demonstrated good reproducibility, with the FENO-low phenotype (FENO < 35 ppb) more stable than the FENO-high phenotype (FENO ≥ 35 ppb). Induced sputum inflammatory phenotypes showed marked variability across the 3 sputum samples taken over 6 months. CONCLUSIONS: The ADEPT cohort showed group stability, individual stability in some parameters e.g. low FEV1/FVC ratio, and low FENO, but marked individual variability in other clinical characteristics and biomarkers e.g. type-2 biomarkers over 12 months. This variability is possibly related to seasonal variations in climate and allergen exposure, medication changes and acute exacerbations. The implications for patient selection strategies based on clinical biomarkers may be considerable

Severe Asthma Standard-of-Care Background Medication Reduction With Benralizumab: ANDHI in Practice Substudy

peer reviewedBackground: The phase IIIb, randomized, parallel-group, placebo-controlled ANDHI double-blind (DB) study extended understanding of the efficacy of benralizumab for patients with severe eosinophilic asthma. Patients from ANDHI DB could join the 56-week ANDHI in Practice (IP) single-arm, open-label extension substudy. Objective: Assess potential for standard-of-care background medication reductions while maintaining asthma control with benralizumab. Methods: Following ANDHI DB completion, eligible adults were enrolled in ANDHI IP. After an 8-week run-in with benralizumab, there were 5 visits to potentially reduce background asthma medications for patients achieving and maintaining protocol-defined asthma control with benralizumab. Main outcome measures for non–oral corticosteroid (OCS)-dependent patients were the proportions with at least 1 background medication reduction (ie, lower inhaled corticosteroid dose, background medication discontinuation) and the number of adapted Global Initiative for Asthma (GINA) step reductions at end of treatment (EOT). Main outcomes for OCS-dependent patients were reductions in daily OCS dosage and proportion achieving OCS dosage of 5 mg or lower at EOT. Results: For non–OCS-dependent patients, 53.3% (n = 208 of 390) achieved at least 1 background medication reduction, increasing to 72.6% (n = 130 of 179) for patients who maintained protocol-defined asthma control at EOT. A total of 41.9% (n = 163 of 389) achieved at least 1 adapted GINA step reduction, increasing to 61.8% (n = 110 of 178) for patients with protocol-defined EOT asthma control. At ANDHI IP baseline, OCS dosages were 5 mg or lower for 40.4% (n = 40 of 99) of OCS-dependent patients. Of OCS-dependent patients, 50.5% (n = 50 of 99) eliminated OCS and 74.7% (n = 74 of 99) achieved dosages of 5 mg or lower at EOT. Conclusions: These findings demonstrate benralizumab's ability to improve asthma control, thereby allowing background medication reduction. © 202

Therapie

Pharmacoepidemiology studies are of particular interest in the respiratory field and especially for inhaled drugs. In real-life, excessive use of rescue medications and under- or inappropriate-prescribing of preventer medications has been shown. In asthma and chronic obstructive pulmonary disease (COPD), the poor use of inhalation device is associated with uncontrolled diseases and occurrence of exacerbations. Inhalation treatments are directly delivered within the lung and are generally considered as safe. However, systemic adverse drug reactions that were not evidenced in clinical trials may be observed after a long-term treatment

Measurement of space charge distribution in alumina-filled epoxy resin for application in HVDC GIS

International audienc

Rev Mal Respir

International audienc

Therapie

AIM OF THE STUDY: To provide a tool for drug misuse or potential misuse monitoring by using a healthcare insurance database. METHODS: A cross-sectional study repeated quarterly from 2007 to 2014 was conducted using data from a 1/97th random sample of the French national healthcare reimbursement system. For each drug studied, ad hoc indicators were designed to assess drug misuse, defined as prescriptions that did not comply with the label stipulated in the summary of product characteristics, in terms of the drug (e.g., interactions) or the patient (age, medical history). We focused on specifically identified situations of drug misuse involving non-steroidal anti-inflammatory drugs (NSAIDs), antiemetics in patients with Parkinson's disease and antipsychotics in pediatrics; we also focused on direct anticoagulants, asthma and oral antidiabetic drugs but results for these latter are only shown in supplementary materials. RESULTS: At-risk prescribing of NSAIDs in patients treated by diuretics or renin-angiotensin system inhibitors always remained higher than 14% over the study (maximum: 19%; 2014 quarter 4: 15.4%). Off-label prescribing of contraindicated anti-dopaminergic antiemetics with dopaminergic antiparkinson drugs was marginal (maximum: 2.2%; 2014 quarter 4: 0.5%) but represented at least 5.5% of antiemetic prescriptions. Despite the rise in antipsychotic prescriptions in pediatrics, no dramatic increase in misuse related to age was observed during the study period (2007 quarter 1: 16.1%; 2014 quarter 4: 11.1%). The highest degree of misuse was observed for aripiprazole and for second-generation antipsychotics other than risperidone and aripiprazole. CONCLUSION: This study provides a simple tool to monitor drug misuse or potential misuse using information from a health insurance database. The results highlight the need for the Regulator to rethink risk management information campaigns and to modify the official information on products

Clin Exp Allergy

Background Dupilumab is a monoclonal anti‐IL‐4Rα antibody developed for the treatment of severe asthma (SA). An early access programme for dupilumab was opened in France in SA patients experiencing unacceptable steroids side‐effects and/or life‐threatening exacerbations. Objective To assess changes in asthma control between baseline and 12 months of treatment. Methods Multi‐centre (n = 13) retrospective real‐life cohort study. This study is registered on ClinicalTrials.gov (NCT04022447). Results Overall, 64 patients with SA (median age 51, interquartile range [44‐61]; 53% females) received dupilumab as add‐on therapy to maximal standard of care; and 76% were on oral daily steroids at baseline. After 12 months, median asthma control test score improved from 14 [7‐16] to 22 [17‐24] (P < .001); median forced expiratory volume in 1 seconds increased from 58% [47‐75] to 68% [58‐88] (P = .001); and daily prednisone dose was reduced from 20 [10‐30] to 5 [0‐7] mg/d (P < .001). Annual exacerbations decreased from 4 [2‐7] to 1 [0‐2] (P < .001). Hypereosinophilia ≥1500/mm3 was observed at least once during follow‐up in 16 patients (25%), persisting after 6 months in 8 (14%) of them. Increase in blood eosinophil count did not modify the clinical response during the study period. Injection‐site reaction was the most common side effect (14%). Three deaths were observed, none related to treatment by investigators. Conclusion & clinical relevance In this first real‐life cohort study of predominantly steroid‐dependent SA, dupilumab significantly improved asthma control and lung function and reduced oral steroids use and exacerbations rate. Despite limitations due to the retrospective study, these results are consistent with controlled trials efficacy data. Further studies are required to assess the clinical significance and long‐term prognosis of sustained dupilumab‐induced hypereosinophilia