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Katrin Milger,1 Dirk Koschel,2 Dirk Skowasch,3 Hartmut Timmermann,4 Olaf Schmidt,5 Karl-Christian Bergmann,6 Claus Neurohr,7 Robert Lindner,8 Sebastian Heck,9 Johann Christian Virchow10 1Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria; 2Division of Pneumonology, Medical Department I, University Hospital Carl Gustav Carus, Dresden and Fachkrankenhaus Coswig, Lung Centre, Coswig, Germany; 3Department of Internal Medicine II – Pneumology, University Hospital Bonn, Bonn, Germany; 4Schwerpunktpraxis Colonnaden, Hamburg, Germany; 5Pneumologische Gemeinschaftspraxis und Studienzentrum KPPK, Koblenz, Germany; 6Institute for Allergology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; 7Abteilung für Pneumologie und Beatmungsmedizin, Robert-Bosch-Krankenhaus Lungenzentrum, Stuttgart, Germany; 8IQVIA Commercial GmbH & Co. OHG, Frankfurt Am Main, Germany; 9GlaxoSmithKline GmbH & Co. KG, Munich, Germany; 10Abteilung Pneumologie & Interdisziplinäre Internistische Intensivmedizin, Universitätsmedizin Rostock - Zentrum für Innere Medizin, Medizinische Klinik I, Rostock, GermanyCorrespondence: Katrin Milger, Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, Graz, 8036, Austria, Email katrin.milger-kneidinger@medunigraz.atPurpose: Asthma is affecting 4– 5% of all adults (10% of children) in Germany, ≥ half are inadequately controlled. In 2019 up to 54 thousand patients suffered from severe uncontrolled asthma, 52% were treated/co-treated by pneumonologists. 45% of them had continuous oral corticosteroid (OCS)- and short-acting β 2-agonist (SABA) overuse for ≥ 2 years. The aim of the current study was to analyze the main treatments, escalation schemes and the adherence to the GINA recommendations.Patients and Methods: Retrospective analysis in 2021 based on data from January to December 2019 in Germany, using the IQVIA™ LRx prescription database and the IQVIA™ Disease Analyzer database containing anonymized electronic medical records as the main data sources.Results: In 2019 25,200 patients with severe, uncontrolled asthma treated in a pneumonologist´s practice in Germany received GINA 3 (0,4%), GINA 4 (76%) or GINA 5 therapy (24%) during the study year compared to 59% GINA 5 therapy in the 5– 10% (1,500– 3,000) co-treated in a specialized outpatient department. In Pneumonologists` practices the most frequent choice in GINA 5 was OCS in 69% of patients (biologicals 37%, long-acting muscarinic antagonist (LAMA) 20%) compared to 66% biologicals, 55% OCS, and 25% LAMA in the outpatient department. 54,958 of 613,000 GINA 4/5 patients were treated with OCS, 9,725 even with doses above the so called “Cushing threshold” for prednisolone of 2700 mg/year. After introduction of a biological treatment, patients reduced their SABA prescriptions by 28%, OCS by 55%, and OCS overall exposure by 40%, one-third did not need OCS anymore.Conclusion: In 75% of patients with uncontrolled asthma for ≥ 2 years therapy was not escalated beyond GINA 4 or low dose OCS was used as the most frequent add-on treatment in GINA 5 contradictory to treatment recommendations. Use of biologics reduced on demand rescue medication and OCS use.Keywords: prescription database, disease analyzer, uncontrolled asthma, biological treatment, OCS use, Germany, guideline adherence

Carlo Mümmler,1 Pontus Mertsch,1 Michaela Barnikel,1 Frank Haubner,2 Ulf Schönermarck,3 Ulrich Grabmaier,4 Hendrik Schulze-Koops,5 Jürgen Behr,1 Nikolaus Kneidinger,1,6 Katrin Milger1 1Department of Medicine V, LMU University Hospital, LMU Munich, Comprehensive Pneumology Center, Member of the German Center of Lung Research (DZL), Munich, Germany; 2Department of Otorhinolaryngology, LMU University Hospital, LMU Munich, Munich, Germany; 3Division of Nephrology, Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany; 4Department of Medicine I, LMU University Hospital, LMU Munich, Munich, Germany; 5Division of Rheumatology and Clinical Immunology, Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany; 6Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, AustriaCorrespondence: Katrin Milger, Department of Medicine V, LMU University Hospital, Marchioninistr, 15, LMU Munich, Munich, 81377, Germany, Tel +49-89-4400-73071, Email Katrin.Milger@med.uni-muenchen.deBackground: Benralizumab reduces exacerbations and long-term oral glucocorticosteroid (OCS) exposure in patients with severe eosinophilic asthma. In patients with eosinophilic granulomatosis with polyangiitis (EGPA), uncontrolled symptoms and exacerbations of asthma and chronic rhinosinusitis (CRS) are important reasons for continued OCS therapies. We aimed to describe outcomes of patients with severe asthma and EGPA treated with benralizumab in real-life.Methods: We retrospectively analyzed adult patients from the Severe Asthma Unit at LMU Munich diagnosed with severe asthma and EGPA treated with benralizumab, differentiating two groups: Group A, patients with a stable daily OCS dose and diagnosis of EGPA > 6 months ago; and Group B, patients treated with high-dose daily OCS due to recent diagnosis of EGPA < 6 months ago. We compared outcome parameters at baseline and 12 months after initiation of benralizumab, including respiratory exacerbations, daily OCS dose, and lung function.Results: Group A included 17 patients, all receiving OCS therapy and additional immunosuppressants; 15 patients (88%) continued benralizumab for more than 12 months, demonstrating a significant reduction in daily OCS dose and exacerbations while FEV1 increased. Group B included 9 patients, all with high-dose daily OCS and some receiving cyclophosphamide pulse therapy for life-threatening disease. Benralizumab addition during induction was well tolerated. A total of 7/9 (78%) continued benralizumab for more than 12 months and preserved EGPA remission at the 12-month timepoint.Conclusion: In this real-life cohort of patients with severe asthma and EGPA, benralizumab initiation during remission maintenance reduced respiratory exacerbations and daily OCS dose. Benralizumab initiation during remission induction was associated with a high rate of clinical EGPA remission.Keywords: EGPA, asthma, CRS, vasculitis, glucocorticoid, OCS, anti-IL5R, biologics, benralizumab

Michaela Barnikel,1,2 Ulrich Grabmaier,3 Pontus Mertsch,1,2 Felix Ceelen,4 Christian Janke,5 Jürgen Behr,1,2 Nikolaus Kneidinger,1,2 Katrin Milger1,2 1Department of Medicine V, LMU University Hospital, Munich, Germany; 2Comprehensive Pneumology Center, Member of the German Center for Lung Research (DZL), Munich, Germany; 3Department of Medicine I, LMU University Hospital, Munich, Germany; 4Department of Pneumology, Asklepios-Fachkliniken Munich-Gauting, Gauting, Germany; 5Department of Infectious Diseases and Tropical Medicine, LMU University Hospital, Munich, GermanyCorrespondence: Katrin Milger, Department of Medicine V, LMU University Hospital, Marchioninistraße 15, Munich, 81377, Germany, Tel +49 89 4400 73071, Email Katrin.Milger@med.uni-muenchen.deAbstract: Eosinophilic inflammation is a hallmark of asthma, and blood eosinophilia has been established as a biomarker for phenotyping asthma and predicting the response to anti-IL5 treatments. Although parasitic infections are rare in European adults, they remain an important differential diagnosis for blood eosinophilia. We present three patients with both domestic parasitic infections and asthma to raise awareness of the potential challenge of eosinophilia and to provide experience in the management of parasitic infections in the setting of planned or ongoing anti-IL5 treatment. One, a patient from Croatia with moderate asthma but severe blood eosinophilia had an underlying Strongyloides stercoralis infection, with positive stool cultures. Second, a patient with severe allergic asthma and gastrointestinal symptoms had a positive S. stercoralis titer in serology with a clinical response to treatment with ivermectin. Third, a patient with severe nonallergic eosinophilic asthma and eosinophilic granulomatosis with polyangiitis (EGPA) showed an increasing hepatic tumour under anti-IL5-receptor therapy. Positive serology confirmed the diagnosis of Echinococcus multilocularis, and albendazole therapy was initiated. Anti-IL5 therapies were safely started (Patient 2) or resumed (Patient 3) after the initiation of antiparasitic treatment. Screening for parasitic infections is useful in cases of hypereosinophilia, extrapulmonary symptoms or stay in endemic regions.Keywords: asthma, eosinophilia, parasitic infections, biologic, anti-IL5 treatment

Hartmut Timmermann,1 Katrin Milger,2 Johann Christian Virchow,3 Olaf Schmidt,4 Karl-Christian Bergmann,5 Dirk Koschel,6 Claus Neurohr,7 Florian Scholz,8 Sebastian Heck,9 Dirk Skowasch10 1Schwerpunktpraxis Colonnaden, Hamburg, Germany; 2Medicine V, Ludwig-Maximilians-University (LMU) Munich, Member of the German Center for Lung Research (DZL), Comprehensive Pneumology Center Munich (CPC-M), Munich, Germany; 3Abteilungen für Pneumologie / Intensivmedizin, Universitätmedizin Rostock, Rostock, Germany; 4Studienzentrum KPPK, Pneumologische Gemeinschaftspraxis, Koblenz, Germany; 5Institute of Allergology, Charité–Universitätsmedizin, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Corporate Member of Freie Universität Berlin and Humboldt-Universität Berlin, Berlin, Germany; 6Fachkrankenhaus Coswig, Lung Centre, Coswig, and Division of Pulmonology, Medical Department I, University Hospital Carl Gustav Carus, Dresden, Germany; 7Abteilung für Pneumologie und Beatmungsmedizin, Robert-Bosch-Krankenhaus Lungenzentrum Stuttgart, Stuttgart, Germany; 8IQVIA Commercial GmbH & Co. OHG, Frankfurt am Main, Germany; 9GlaxoSmithKline GmbH & Co. KG, Munich, Germany; 10Department of Internal Medicine II – Pneumology, University Hospital Bonn, Bonn, GermanyCorrespondence: Hartmut Timmermann, Schwerpunktpraxis Colonnaden 72, Hamburg, 20354, Germany, Tel +49 4086648880, Fax +49 40866488824, Email timmermann@allergopraxis.dePurpose: It has been estimated that, in 2019, 54,000 patients in Germany had uncontrolled GINA step 4/5 asthma. In the current study we analyzed which health care providers were involved in the management of these patients and their role in disease phenotyping.Patients and Methods: The year 2019 was retrospectively analyzed using the IQVIATM LRx, a longitudinal anonymized prescription database, and the electronic, anonymized medical records database, the IQVIA Disease Analyzer.Results: Of 54,000 uncontrolled GINA step 4/5 asthma patients in Germany, 52% had consulted both general practitioners (GPs) and pulmonologists, and 48% were seen exclusively by a GP. Of these 54,000 patients, 45% were being prescribed and were thus overusing short-acting β 2-agonists (SABAs) and oral corticosteroids (OCS) for ≥ 2 years, 26% for ≥ 3 years, and 16% for ≥ 4 years. In most regions, pulmonologists saw one of their uncontrolled GINA step 4/5 asthma patients per week. Laboratory tests from consultations with a GP were available for only 10% of patients referred to a pulmonologist. In 50% of uncontrolled asthma patients treated according to GINA step 4/5, these were initiated by the pulmonologist, and 34% received laboratory testing within the first year (in GINA step 4/5 asthma, the numbers are 20% and 18%, respectively).Conclusion: Fifty percent of uncontrolled asthma patients treated according to GINA step 4/5 were regularly seen by pulmonologists, who performed most of the phenotyping confirming their importance in the management of severe, uncontrolled asthma in Germany. To understand treatment pathways for these patients, further studies are needed.Keywords: prescription database, biological treatment, laboratory test, uncontrolled GINA step 4/5 asthma, Germany

Stephanie Korn,1 Katrin Milger,2 Dirk Skowasch,3 Christian Schulz,4 Cordula Mohrlang,5 Martin Wernitz,5 Thomas Paulsson,6 Michael Hennig,5 Roland Buhl7 1IKF Pneumologie Mainz, Mainz and Thoraxklinik Heidelberg, Heidelberg, Germany; 2Department of Medicine V, University Hospital, LMU Munich, Munich and Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany; 3University Hospital Bonn, Pneumology, Bonn, Germany; 4University Hospital Regensburg, Internal Medicine II, Pneumology, Regensburg, Germany; 5GlaxoSmithKline GmbH & Co. KG, Munich, Germany; 6GlaxoSmithKline Plc, Brentford, UK; 7Pulmonary Department, Johannes Gutenberg University Mainz, Mainz, GermanyCorrespondence: Cordula Mohrlang, GlaxoSmithKline GmbH & Co. KG, Prinzregentenplatz 9, München, D-81675, Germany, Tel + 49 163 360 5201, Email cordula.c.mohrlang@gsk.comPurpose: The German Asthma Net (GAN) operates a Severe Asthma Registry that provides an overview of the clinical presentation and management of patients with severe asthma. Based upon data from the GAN registry, the MepoGAN study aimed to describe clinical profiles and treatment outcomes of patients who were treated with the anti-IL-5 monoclonal antibody mepolizumab (NucalaTM) in routine practice in Germany.Patients and Methods: The MepoGAN study is a descriptive retrospective non-interventional cohort study. Mepolizumab patients enrolled in the GAN registry were evaluated with results being described in two different data sets: Cohort 1 (n=131) started on mepolizumab when the patients entered the registry. Results were reported after 4 months of therapy. Patients in Cohort 2 (n=220) were on treatment with mepolizumab at the time of enrollment and follow-up data were collected after a further year of treatment. Outcome measures included asthma control, lung function, disease symptoms, OCS use, and exacerbations.Results: Patients enrolled in the registry who started on mepolizumab in Cohort 1 had a mean age of 55 years, were former smokers in 51% of the cases, had a mean blood eosinophil count of 500 cells/μL, and frequently had maintenance OCS use (55%). In this real-world setting, mepolizumab therapy was associated with a clinically relevant reduction in blood eosinophils (− 445.7 cells/μL), OCS use (− 30%), and improvement in asthma control. Fifty-five percent (vs 10% at baseline) of the patients reported controlled or partially controlled asthma 4 months after starting therapy. In patients who were already treated with mepolizumab at registry enrollment (Cohort 2), asthma control and lung function remained stable after a further year of observation.Conclusion: The GAN registry data confirm the effectiveness of mepolizumab in a real-world setting. Treatment benefits are maintained over time. While the asthma of patients treated in routine practice was more severe, the results observed with mepolizumab are broadly consistent with RCTs.Keywords: severe asthma, registry, real-world, mepolizumab, patient profile, asthma control

Karl-Christian Bergmann,1 Dirk Skowasch,2 Hartmut Timmermann,3 Robert Lindner,4 Johann Christian Virchow,5 Olaf Schmidt,6 Dirk Koschel,7 Claus Neurohr,8 Sebastian Heck,9 Katrin Milger10 1Institute for Allergology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, Berlin, Germany; 2Department of Internal Medicine II – Pneumology, University Hospital Bonn, Bonn, Germany; 3Schwerpunktpraxis Colonnaden, Hamburg, Germany; 4IQVIA Commercial GmbH & Co. OHG, Frankfurt Am Main, Germany; 5Universitätsmedizin Rostock - Zentrum für Innere Medizin, Medizinische Klinik I, Abteilung Pneumologie & Interdisziplinäre Internistische Intensivmedizin, Rostock, Germany; 6Pneumologische Gemeinschaftspraxis und Studienzentrum KPPK, Koblenz, Germany; 7Fachkrankenhaus Coswig, Lung Centre, Coswig, and Division of Pulmonology, Medical Department I, University Hospital Carl Gustav Carus, Dresden, Germany; 8Abteilung für Pneumologie und Beatmungsmedizin, Robert-Bosch-Krankenhaus Lungenzentrum, Stuttgart, Germany; 9GlaxoSmithKline GmbH & Co. KG, Munich, Germany; 10Department of Medicine V, University Hospital, Ludwig-Maximilians-University (LMU) Munich, Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, GermanyCorrespondence: Karl-Christian Bergmann, Institute for Allergology-Charité, Luisenstraße 2, Berlin, 10117, Germany, Tel +491711934508, Fax +49 30 549090609, Email karlchristianbergmann@gmail.comPurpose: Asthma is one of the most prevalent chronic diseases in Germany affecting 4– 5% of all adults and 10% of children. Despite the availability of biologicals in recent years, studies show patients with inadequately controlled severe asthma in real life. The aim of the current study was to characterize and estimate the number of patients with NVL/GINA level 4 or 5 asthma and signs of poor control in Germany.Patients and Methods: In 2021, we retrospectively analyzed data collected during 2019 using the IQVIA™ LRx and IQVIA™ Disease Analyzer databases which contain anonymized longitudinal data covering approximately 80% of statutory health insurance (GKV) prescriptions in Germany with most relevant information about prescriptions, basic patient demographics or location of the prescriber; the IQVIA™ Disease Analyzer anonymized electronic medical records from a representative sample of office-based GPs and specialists. An expert committee of pulmonologists from different hospitals and expert practices supported the study. Asthma patients treated according to NVL/GINA 4/5 who used SABAs frequently (≥ 3 on days with no ICS-containing prescriptions/year) and/or received prescriptions for oral corticosteroids (OCS) (score of ≥ 2/year, a pulmonologist prescription scored 1.0, GP 0.75) were classified as severe, uncontrolled asthma.Results: In 2019, 3.4 million patients received at least two prescriptions of respiratory medications and 2.4 million patients on maintenance respiratory treatment have asthma. A total of 625,000 asthma patients were treated according to NVL/GINA step 4 or 5. Among these, 54,000 were uncontrolled according to the pre-defined OCS and/or SABA use, which corresponds to approximately 15% of patients in certain regions.Conclusion: In 2019, approximately 54,000 patients in Germany treated according to NVL/GINA step 4/5 had evidence suggestive for poor asthma control, up to 15% of patients in certain regions. Yet, only 12,000 patients overall were being treated with biologicals suggesting a possible treatment gap that requires further investigation.Keywords: prescription database, disease analyzer, uncontrolled asthma, oral corticosteroid, OCS, short-acting β 2-agonist, SABA

Background: The R-Scale-PF was proposed to evaluate the health-related quality of life (HRQoL) in patients with idiopathic pulmonary fibrosis (IPF). We generated a German version of the R-Scale-PF (GR-Scale), representing the first translation of the questionnaire into another language and assessed HRQoL longitudinally in various interstitial lung diseases (ILDs) using the R-Scale-PF scoring system at a specialized ILD centre. Methods: We have translated the questionnaire in accordance with the WHO translation guidelines and applied it to 80 ILD patients of our department, with follow-ups after 3–6 months, assessing its internal consistency, floor and ceiling effects, concurrent validity, known-groups validity, and its responsiveness to changes over time. Results: At baseline, all 80 patients completed the GR-Scale. In 70 patients (87.5%), follow-up data could be obtained after 4.43 ± 1.2 months. The GR-Scale demonstrated acceptable internal consistency (Cronbach's α 0.749) and slight floor effects. Concurrent validity analysis showed weak but significant correlations with forced vital capacity (FVC; r=-0.282 p = 0.011) and diffusion capacity for carbon monoxide (DLco; r=-0.254 p = 0.025). In the follow-up analysis, moderate correlations were found with FVC (r=-0.41 p < 0.001) and DLco (r=-0.445 p < 0.001). No significant difference in the total score was found between patients with IPF (n = 10) and with non-IPF ILDs (n = 70). The GR-Scale successfully discriminated between groups of varying disease severity based on lung function parameters and the need for long-term oxygen therapy (LTOT). Furthermore, it was able to distinguish between patients showing improvement, stability or decline of lung function parameters. Conclusion: Our prospective observational pilot study suggests that the GR-Scales is a simple and quick tool to measure HRQoL in patients with ILDs, thus providing an important additional information for the clinical assessment of ILD patients. Trial registration: Our study was retrospectively registered in the German Clinical Trial Register (DRKS) on 02.11.2022 (DRKS-ID: DRKS00030599). [ABSTRACT FROM AUTHOR]

Moritz Z Kayser,1 Nora Drick,1 Katrin Milger,2,3 Jan Fuge,1,4 Nikolaus Kneidinger,2,3 Stephanie Korn,5 Roland Buhl,6 Jürgen Behr,2,3 Tobias Welte,1,4 Hendrik Suhling1 1Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany; 2Department of Medicine V, University Hospital, LMU, Munich, Germany; 3Comprehensive Pneumology Center-Munich (CPC‐M), Member of the German Center for Lung Research (DZL), Munich, Germany; 4Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany; 5Clinical Research Centre for Respiratory Medicine, Mainz, Germany; 6Pulmonary Department, Mainz University Hospital, Mainz, GermanyCorrespondence: Moritz Z KayserDepartment of Respiratory Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, 30625, Lower Saxony, GermanyTel +49 0511-532-3531Fax +49 511-532-161108Email kayser.moritz@mh-hannover.dePurpose: Treatment of severe eosinophilic asthma (SEA) has been revolutionized by the development of monoclonal antibodies targeting underlying immunological pathways of eosinophilic asthma. Two of the most frequently used antibodies in clinical practice are mepolizumab, targeting interleukin (IL) 5 and benralizumab, targeting the IL5 receptor alpha. The comparative treatment efficacy of these antibodies remains unclear, particularly regarding long-term outcomes.Patients and Methods: In this multicenter, retrospective study, we included 123 patients treated with mepolizumab and 64 patients treated with benralizumab for 12 months at one of three study sites in Germany. Data were collected at baseline and after 6 and 12 months of therapy. Endpoints were changes in pulmonary function (PF), exacerbation rate, oral corticosteroid (OCS) use and dose, asthma control test (ACT) score and fractional exhaled nitric oxide (FeNO) levels.Results: Both mepolizumab and benralizumab led to significant improvements in PF with an increase in median forced expiratory volume (FEV1) after 12 months from 59% to 74% for mepolizumab and 63% to 72% for benralizumab. Treatment also led to significant improvements in ACT scores after 12 months (mepolizumab: 13 [interquartile range (IQR) 9– 17] to 19 [IQR 15– 23]; benralizumab: 12 [IQR 9– 16] to 22 [IQR 16– 25]) as well as a reduction of mean OCS dose (mepolizumab 8 mg [IQR 5– 12.5 mg] median prednisolone equivalent at baseline to 5 mg [IQR 3– 7.5 mg]; benralizumab 7.5 mg [IQR 5– 15 mg] to 5 mg [IQR 2– 10 mg]). The exacerbation rates were reduced significantly, irrespective of the treatment. Overall, changes were similar after 6 and 12 months of therapy.Conclusion: Both mepolizumab and benralizumab are highly effective in the long-term treatment of SEA, with no clinically relevant differences in outcomes after 12 months of therapy. In both groups, improvements were similar after 6 and 12 months of therapy, underlining the feasibility of early treatment evaluation.Keywords: severe eosinophilic asthma, asthma control, lung, treatment response, interleukin-5, interleukin-5-receptor

Nora Drick,1,* Katrin Milger,2,* Benjamin Seeliger,1 Jan Fuge,1 Stephanie Korn,3 Roland Buhl,3 Maren Schuhmann,4 Felix Herth,4 Benjamin Kendziora,5 Juergen Behr,2 Nikolaus Kneidinger,2 Karl-Christian Bergmann,5 Christian Taube,6 Tobias Welte,1 Hendrik Suhling1 1Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany; 2Department of Internal Medicine V, Ludwig-Maximilians University of Munich (LMU), Munich, Germany; 3Pulmonary Department, Mainz University Hospital, Mainz, Germany; 4Department of Pneumology and Critical Care Medicine, Thoraxklinik, University of Heidelberg, Heidelberg, Germany; 5Allergy-Centre-Charité, Charité – Universitätsmedizin Berlin, Berlin, Germany; 6Department of Pulmonary Medicine, University Hospital Essen – Ruhrlandklinik, Essen, Germany*These authors contributed equally to this workCorrespondence: Hendrik Suhling Email suhling.hendrik@mh-hannover.deBackground: Anti-IL-5 antibodies represent an established therapy for severe eosinophilic asthma (SEA), but some patients show inadequate response. The objective of this study was to assess the effects of a switch to anti-IL-5Rα therapy in patients with inadequate response to anti-IL-5 therapy.Methods: In this retrospective multi-centre, real-life study, we analysed all SEA patients switched from anti-IL-5 to anti-IL-5Rα therapy due to inadequate response or intolerability. Pulmonary function tests, blood gas analyses, asthma control tests (ACT) and oral corticosteroid (OCS) usage were analysed and compared at three timepoints: baseline (BL, before anti-IL-5 therapy), timepoint 1 (T1, under anti-IL-5 therapy) and timepoint 2 (T2, under anti-IL-5Rα therapy).Results: Of 665 patients treated with anti-IL-5 antibodies, 70 were switched to anti-IL-5Rα and 60 were included in the analysis. Median treatment duration was 8 months [IQR 5; 15] for anti-IL-5 and 5 months [IQR 4; 6] for anti-IL-5Rα therapy. FEV1 was 61% of predicted at BL [IQR 41; 74], 61% [IQR 43; 79] at T1 and 68% [IQR 49; 87] at T2 (pT1-T2=0.011). ACT score was 10 [IQR 8; 13], 16 [IQR 10; 19] and 19 [IQR 14; 22], respectively (both p< 0.001). The number of patients requiring OCS was reduced from 41 (BL) to 32 (T1) and 19 (T2) (both p< 0.001). Ten patients discontinued anti-IL-5Rα therapy due to insufficient efficacy (n=7) and adverse events (n=3).Conclusion: Switching from anti-IL-5 to anti-IL-5Rα therapy in patients with inadequate response was associated with significantly improved FEV1, asthma control and OCS reduction.Keywords: benralizumab, eosinophils, mepolizumab, reslizumab, severe asthma

Katrin Milger,1 Lesca Miriam Holdt,2 Daniel Teupser,2 Rudolf Maria Huber,1 Jürgen Behr,1 Nikolaus Kneidinger1 1Department of Internal Medicine V, University of Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research, 2Institute of Laboratory Medicine, University of Munich, Munich, Germany Abstract: Deficiency in the serine protease inhibitor, alpha-1 antitrypsin (AAT), is known to cause emphysema and liver disease. Other manifestations, including airway disease or skin disorders, have also been described. A 44-year-old woman presented to our emergency department with dyspnea and respiratory insufficiency. She had never smoked, and had been diagnosed with COPD 9 years earlier. Three months previously, she had suffered a pulmonary embolism. Chest computed tomography scan revealed severe cystic bronchiectasis with destruction of the lung parenchyma. The sweat test was normal and there was no evidence of the cystic fibrosis transmembrane conductance regulator (CFTR) mutation. Capillary zone electrophoresis showed a decrease of alpha-1 globin band and AAT levels were below the quantification limit (