23 research outputs found

    Blood eosinophils as a biomarker of future COPD exacerbation risk:pooled data from 11 clinical trials

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    Background Chronic obstructive pulmonary disease (COPD) is characterised by progressive airflow limitation and chronic inflammation. Predicting exacerbations of COPD, which contribute to disease progression, is important to guide preventative treatment and improve outcomes. Blood eosinophils are a biomarker for patient responsiveness to inhaled corticosteroids (ICS); however, their effectiveness as a predictive biomarker for COPD exacerbations is unclear. Methods This post hoc analysis pooled data from 11 Boehringer Ingelheim-sponsored Phase III and IV randomised COPD studies with similar methodologies. Exacerbation data were collected from these studies, excluding patients from the ICS withdrawal arm of the WISDOM® study. Patients were grouped according to their baseline blood eosinophil count, baseline ICS use and number of exacerbations in the year prior to each study. Results Exacerbation rate data and baseline eosinophil count were available for 22,125 patients; 45.6% presented with a baseline blood eosinophil count of ≤ 150 cells/μL, 34.3% with 150–300 cells/μL and 20.1% with > 300 cells/μL. The lowest exacerbation rates were observed in patients with ≤ 150 cells/μL, with small increases in exacerbation rate observed with increasing eosinophil count. When stratified by exacerbation history, the annual rate of exacerbations for patients with 0 exacerbations in the previous year increased in line with increasing eosinophil counts (0.38 for ≤ 150 cells/μL, 0.39 for 150–300 cells/μL and 0.44 for > 300 cells/μL respectively). A similar trend was identified for patients with one exacerbation in the previous year, 0.62, 0.66 and 0.67 respectively. For patients with ≥ 2 exacerbations, exacerbation rates fluctuated between 1.02 (≤ 150 cells/μL) to 1.10 (150–300 cells/μL) and 1.07 (> 300 cells/μL). Higher exacerbation rates were noted in patients treated with ICS at baseline (range 0.75 to 0.82 with increasing eosinophil count) compared with patients not on ICS (range 0.45 to 0.49). Conclusion We found no clinically important relationship between baseline blood eosinophil count and exacerbation rate. Hence, the current analysis does not support the use of blood eosinophils to predict exacerbation risk; however, previous exacerbation history was found to be a more reliable predictor of future exacerbations. Trial registration ClinicalTrials.gov Identifiers: NCT00168844, NCT00168831, NCT00387088, NCT00782210, NCT00782509, NCT00793624, NCT00796653, NCT01431274, NCT01431287, NCT02296138 and NCT00975195

    Tiotropium/Olodaterol Delays Clinically Important Deterioration Compared with Tiotropium Monotherapy in Patients with Early COPD:a Post Hoc Analysis of the TONADO® Trials

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    Introduction Since chronic obstructive pulmonary disease (COPD) is a heterogeneous condition, a composite endpoint of clinically important deterioration (CID) may provide a more holistic assessment of treatment efficacy. We compared long-acting muscarinic antagonist/long-acting beta(2)-agonist combination therapy with tiotropium/olodaterol versus tiotropium alone using a composite endpoint for CID. CID was evaluated overall and in patients with low exacerbation history (at most one moderate exacerbation in the past year [not leading to hospitalisation]), Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2 patients and maintenance-naive patients with COPD. We assessed whether early treatment optimisation is more effective with tiotropium/olodaterol versus tiotropium in delaying and reducing the risk of CID. Methods Data were analysed from 2055 patients treated with either tiotropium/olodaterol 5/5 mu g or tiotropium 5 mu g (delivered via Respimat(R)) in two replicate, 52-week, parallel-group, double-blind studies (TONADO(R) 1/2). CID was defined as a decline of at least 0.1 L from baseline in trough forced expiratory volume in 1 s, increase from baseline of at least 4 units in St. George's Respiratory Questionnaire score, or moderate/severe exacerbation. Time to first occurrence of one of these events was recorded as time to first CID. Results Overall, treatment with tiotropium/olodaterol significantly increased the time to, and reduced the risk of, CID versus tiotropium (median time to CID 226 versus 169 days; hazard ratio [HR] 0.76 [95% confidence interval 0.68, 0.85]; P <0.0001). Significant reductions were also observed in patients with low exacerbation history (241 versus 170; HR 0.73 [0.64, 0.83]; P <0.0001), GOLD 2 patients (241 versus 169; 0.72 [0.61, 0.84]; P <0.0001) and maintenance-naive patients (233 versus 171; 0.75 [0.62, 0.91]; P = 0.0030). Conclusion In patients with COPD, including patients with low exacerbation history, GOLD 2 patients and maintenance-naive patients, tiotropium/olodaterol reduced the risk of CID versus tiotropium. These results demonstrate the advantages of treatment optimisation with tiotropium/olodaterol over tiotropium monotherapy. PLAIN LANGUAGE SUMMARY COPD is a complicated disease that deteriorates over time. Worsening of COPD is associated with the lungs working less effectively, a fall in quality of life and a rise in sudden flare-ups of the disease. In this study, we looked at lung function, quality of life and flare-ups together using a measure called "clinically important deterioration" (CID). We looked at 2055 people with COPD to compare the effects of taking two bronchodilators (tiotropium and olodaterol) against taking one bronchodilator (tiotropium alone). Bronchodilators are a type of inhaled medication that relax the muscles in the lungs and widen airways, making it easier to breathe. They have also been shown to reduce sudden flare-ups of COPD. Across a wide range of people with COPD, we found that treatment with tiotropium/olodaterol reduced the risk of a CID compared with tiotropium alone. This includes in those patients at an early stage of disease, who may benefit from finding the best treatment option for them as early as possible

    Tiotropium/Olodaterol Decreases Exacerbation Rates Compared with Tiotropium in a Range of Patients with COPD: Pooled Analysis of the TONADO®/DYNAGITO® Trials

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    Introduction Previous studies demonstrated that tiotropium/olodaterol reduced rates of exacerbations in patients with chronic obstructive pulmonary disease (COPD). However, this should be examined in a wider population. Methods This post hoc analysis pooled data from TONADO® 1 + 2 and DYNAGITO®, three 52-week, parallel-group, randomised, double-blind, phase III trials investigating patients with moderate-to-very severe COPD, with and without previous exacerbations, who received tiotropium/olodaterol 5/5 µg or tiotropium 5 µg. Subgroup analyses were conducted on patients stratified by exacerbation history, Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage 2–4 disease severity and baseline inhaled corticosteroid (ICS) use. Results In 9942 patients, tiotropium/olodaterol was associated with lower rates of moderate/severe exacerbations (0.68 vs. 0.77 per patient-year; rate ratio (RR) vs. tiotropium 0.89, 95% confidence interval (CI) 0.84, 0.95; P = 0.0003) and exacerbations requiring hospitalisation (0.11 vs. 0.13 per patient-year; RR 0.86, 95% CI 0.75, 0.99; P = 0.0380) versus tiotropium. Lower rates of moderate/severe exacerbations with tiotropium/olodaterol versus tiotropium were evident in patients with 0–1 moderate exacerbation in the previous year (0.54 vs. 0.60 per patient-year; RR 0.90, 95% CI 0.82, 0.98; P = 0.0187) and at least two moderate or at least one severe exacerbation(s) in the previous year (0.97 vs. 1.09 per patient-year; RR 0.89, 95% CI 0.82, 0.97; P = 0.0096). In patients with GOLD 2 and GOLD 3 COPD, moderate/severe exacerbation rates were lower with tiotropium/olodaterol versus tiotropium; GOLD 4 patients showed negligible difference between treatments. When evaluating patients by baseline ICS use, there was a significantly lower rate of moderate/severe exacerbations with tiotropium/olodaterol versus tiotropium in patients receiving ICS. Conclusions Tiotropium/olodaterol decreased the rate of moderate/severe exacerbations and exacerbations leading to hospitalisation versus tiotropium. Results from this large, pooled, post hoc analysis support the use of dual bronchodilation with tiotropium/olodaterol in a broad range of patients, reflective of patients with COPD in clinical practice

    A Bayesian Spatial Model to Predict Disease Status Using Imaging Data From Various Modalities

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    Relating disease status to imaging data stands to increase the clinical significance of neuroimaging studies. Many neurological and psychiatric disorders involve complex, systems-level alterations that manifest in functional and structural properties of the brain and possibly other clinical and biologic measures. We propose a Bayesian hierarchical model to predict disease status, which is able to incorporate information from both functional and structural brain imaging scans. We consider a two-stage whole brain parcellation, partitioning the brain into 282 subregions, and our model accounts for correlations between voxels from different brain regions defined by the parcellations. Our approach models the imaging data and uses posterior predictive probabilities to perform prediction. The estimates of our model parameters are based on samples drawn from the joint posterior distribution using Markov Chain Monte Carlo (MCMC) methods. We evaluate our method by examining the prediction accuracy rates based on leave-one-out cross validation, and we employ an importance sampling strategy to reduce the computation time. We conduct both whole-brain and voxel-level prediction and identify the brain regions that are highly associated with the disease based on the voxel-level prediction results. We apply our model to multimodal brain imaging data from a study of Parkinson's disease. We achieve extremely high accuracy, in general, and our model identifies key regions contributing to accurate prediction including caudate, putamen, and fusiform gyrus as well as several sensory system regions

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    <p>Relating disease status to imaging data stands to increase the clinical significance of neuroimaging studies. Many neurological and psychiatric disorders involve complex, systems-level alterations that manifest in functional and structural properties of the brain and possibly other clinical and biologic measures. We propose a Bayesian hierarchical model to predict disease status, which is able to incorporate information from both functional and structural brain imaging scans. We consider a two-stage whole brain parcellation, partitioning the brain into 282 subregions, and our model accounts for correlations between voxels from different brain regions defined by the parcellations. Our approach models the imaging data and uses posterior predictive probabilities to perform prediction. The estimates of our model parameters are based on samples drawn from the joint posterior distribution using Markov Chain Monte Carlo (MCMC) methods. We evaluate our method by examining the prediction accuracy rates based on leave-one-out cross validation, and we employ an importance sampling strategy to reduce the computation time. We conduct both whole-brain and voxel-level prediction and identify the brain regions that are highly associated with the disease based on the voxel-level prediction results. We apply our model to multimodal brain imaging data from a study of Parkinson's disease. We achieve extremely high accuracy, in general, and our model identifies key regions contributing to accurate prediction including caudate, putamen, and fusiform gyrus as well as several sensory system regions.</p

    Tiotropium/Olodaterol Delays Clinically Important Deterioration Compared with Tiotropium Monotherapy in Patients with Early COPD:a Post Hoc Analysis of the TONADO(R) Trials

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    Introduction Since chronic obstructive pulmonary disease (COPD) is a heterogeneous condition, a composite endpoint of clinically important deterioration (CID) may provide a more holistic assessment of treatment efficacy. We compared long-acting muscarinic antagonist/long-acting beta(2)-agonist combination therapy with tiotropium/olodaterol versus tiotropium alone using a composite endpoint for CID. CID was evaluated overall and in patients with low exacerbation history (at most one moderate exacerbation in the past year [not leading to hospitalisation]), Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2 patients and maintenance-naive patients with COPD. We assessed whether early treatment optimisation is more effective with tiotropium/olodaterol versus tiotropium in delaying and reducing the risk of CID. Methods Data were analysed from 2055 patients treated with either tiotropium/olodaterol 5/5 mu g or tiotropium 5 mu g (delivered via Respimat(R)) in two replicate, 52-week, parallel-group, double-blind studies (TONADO(R) 1/2). CID was defined as a decline of at least 0.1 L from baseline in trough forced expiratory volume in 1 s, increase from baseline of at least 4 units in St. George's Respiratory Questionnaire score, or moderate/severe exacerbation. Time to first occurrence of one of these events was recorded as time to first CID. Results Overall, treatment with tiotropium/olodaterol significantly increased the time to, and reduced the risk of, CID versus tiotropium (median time to CID 226 versus 169 days; hazard ratio [HR] 0.76 [95% confidence interval 0.68, 0.85]; P &lt;0.0001). Significant reductions were also observed in patients with low exacerbation history (241 versus 170; HR 0.73 [0.64, 0.83]; P &lt;0.0001), GOLD 2 patients (241 versus 169; 0.72 [0.61, 0.84]; P &lt;0.0001) and maintenance-naive patients (233 versus 171; 0.75 [0.62, 0.91]; P = 0.0030). Conclusion In patients with COPD, including patients with low exacerbation history, GOLD 2 patients and maintenance-naive patients, tiotropium/olodaterol reduced the risk of CID versus tiotropium. These results demonstrate the advantages of treatment optimisation with tiotropium/olodaterol over tiotropium monotherapy.PLAIN LANGUAGE SUMMARY COPD is a complicated disease that deteriorates over time. Worsening of COPD is associated with the lungs working less effectively, a fall in quality of life and a rise in sudden flare-ups of the disease. In this study, we looked at lung function, quality of life and flare-ups together using a measure called "clinically important deterioration" (CID). We looked at 2055 people with COPD to compare the effects of taking two bronchodilators (tiotropium and olodaterol) against taking one bronchodilator (tiotropium alone). Bronchodilators are a type of inhaled medication that relax the muscles in the lungs and widen airways, making it easier to breathe. They have also been shown to reduce sudden flare-ups of COPD. Across a wide range of people with COPD, we found that treatment with tiotropium/olodaterol reduced the risk of a CID compared with tiotropium alone. This includes in those patients at an early stage of disease, who may benefit from finding the best treatment option for them as early as possible.</p
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