CClinicalTrials.gg
Active, not recruitingNCT05595642ARNASAUpdated May 20, 2026

A Study to Evaluate Astegolimab in Participants With Chronic Obstructive Pulmonary Disease

A Phase 3 interventional study of Astegolimab and Placebo in Chronic Obstructive Pulmonary Disease (COPD), sponsored by Hoffmann-La Roche. Active, not recruiting at 382 sites in 36 countries. Open to participants aged 40 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-05-20.

Sponsored by Hoffmann-La Roche · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
1,290
Allocation
Randomized
Ages
40 Years to 80 Years
Sex
All
01

Study summary

This study will evaluate the efficacy and safety of astegolimab compared with placebo in participants with chronic obstructive pulmonary disease (COPD) who are former or current smokers and have a history of frequent exacerbations.

02

Conditions studied

  • Chronic Obstructive Pulmonary Disease (COPD)
03

In context

Pulmonary Disease, Chronic Obstructive

4,131 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 697 are open to participants now.

This study's planned enrollment of 1,290 is above the median of 70 across 2,926 interventional studies indexed under Pulmonary Disease, Chronic Obstructive.

Browse Pulmonary Disease, Chronic Obstructive studies →

Lead sponsor

Hoffmann-La Roche is the lead sponsor of 2,061 studies on the registry; 85 are open to participants now.

Of its 319 completed or terminated interventional studies of FDA-regulated products, 239 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Documented COPD diagnosis for ≥ 12 months
  • History of frequent exacerbations, defined as having had 2 or more moderate or severe COPD exacerbations within 12 months prior to screening
  • Post-bronchodilator FEV1 ≥ 20% and \< 80% of predicted at screening
  • Post-bronchodilator FEV1/FVC \< 0.70 at screening
  • Modified Medical Research Council (dyspnea scale) (mMRC) score ≥ 2
  • Current tobacco smoker or former smoker with a history of smoking ≥ 10 pack-years
  • On optimized COPD maintenance therapy as defined below for ≥ 12 months prior to screening, and stable on current therapy for at least 4 weeks prior to screening: Inhaled corticosteroid (ICS) plus long-acting beta-agonist (LABA), Long-acting muscarinic antagonist (LAMA) plus LABA, ICS plus LAMA plus LABA
  • Chest X-ray or computed tomography (CT) scan within 6 months prior to screening or chest X-ray during the screening period that confirms the absence of clinically significant lung disease besides COPD

Exclusion criteria

Exclusion Criteria

  • Current documented diagnosis of asthma
  • History of clinically significant pulmonary disease other than COPD
  • Diagnosis of 1-antitrypsin deficiency
  • History of long-term treatment with oxygen at > 4.0 liters/minute
  • Lung volume reduction surgery or procedure within 12 months prior to screening
  • Individuals participating in, or scheduled for, an intensive COPD rehabilitation program (participants who are in the maintenance phase of a rehabilitation program are eligible)
  • History of lung transplant
  • Any infection that resulted in hospital admission for ≥ 24 hours and/or treatment with oral, IV, or IM antibiotics within 4 weeks prior to or during screening
  • Upper or lower respiratory tract infection within 4 weeks prior to or during screening
  • Treatment with oral, IV, or IM corticosteroids within 4 weeks prior to initiation of study drug
  • Initiation of or change in non-biologic immunomodulatory or immunosuppressive therapy within 3 months prior to screening
  • Unstable cardiac disease, myocardial infarction, or New York Heart Association Class III or IV heart failure within 12 months prior to screening
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
1,290 participants (estimated)

Study arms

  • Experimental
    Astegolimab SC Q2W

    Participants will receive subcutaneous (SC) astegolimab every 2 weeks (Q2W)

    Drug: Astegolimab

  • Experimental
    Astegolimab SC Q4W

    Participants will receive alternating SC astegolimab and placebo Q2W, thus receiving SC astegolimab Q4W.

    Drug: Astegolimab

  • Placebo comparator
    Placebo SC Q2W

    Participants will receive SC placebo Q2W

    Drug: Placebo

Interventions

  • DrugAstegolimab

    Participants will receive SC astegolimab Q2W or Q4W

  • DrugPlacebo

    Participants will receive SC placebo Q2W

06

What researchers measure

Primary outcomes

  1. Annualized rate of moderate and severe COPD exacerbations over the 52-week treatment period

    Time frame: 52 weeks

Secondary outcomes

  1. Time to first moderate or severe COPD exacerbation during the 52-week treatment period

    Time frame: 52 weeks

  2. Absolute change from baseline in health-related quality of life (HRQoL) at Week 52 as assessed through the St. George's Respiratory Questionnaire-COPD (SGRQ-C) total score

    Time frame: Week 52

  3. Absolute change from baseline in post-bronchodilator forced expiratory volume (FEV1) at Week 52

    Time frame: Week 52

  4. Absolute change from baseline in the Evaluating Respiratory Symptoms in Chronic Obstructive Pulmonary Disease (E-RS:COPD) total score at Week 52

    Time frame: Week 52

  5. Proportion of participants with improvement in HRQoL at Week 52

    Time frame: Week 52

  6. Annualized rate of severe COPD exacerbations over the 52-week treatment period

    Time frame: 52 weeks

07

Study locations

382 sites
  • University of Alabama at Birmingham
    Birmingham, Alabama 35294, United States
  • SEC Clinical Research LLC - Dothan 2 - ClinEdge - PPDS
    Dothan, Alabama 36305, United States
  • Pulmonary Associates PA
    Glendale, Arizona 85306-4669, United States
  • AES - DRS - Synexus Clinical Research US, Inc. - Tucson
    Tucson, Arizona 85741-3118, United States
  • Kern Research
    Bakersfield, California 93301, United States
  • Allergy & Asthma Medical Group of the Bay Area
    Walnut Creek, California 94598, United States
  • Finlay Medical Research Corporation
    Greenacres City, Florida 33467-2979, United States
  • San Marcus Research Clinic Inc.
    Miami, Florida 33014, United States
  • Oceane7 Medical & Research Center, Inc.
    Miami, Florida 33144-2155, United States
  • Avantis Clinical Research, LLC
    Miami, Florida 33155-3265, United States
  • Research Institute of South Florida Inc
    Miami, Florida 33173, United States
  • Diverse Clinical Research, LLC
    Miami, Florida 33175-3434, United States
  • Central Florida Pulmonary Group, PA
    Orlando, Florida 32803, United States
  • AES - DRS - Synexus Clinical Research US, Inc. - The Villages
    The Villages, Florida 32162-7116, United States
  • AES - DRS - Synexus Clinical Research US, Inc. - Atlanta
    Atlanta, Georgia 30328, United States
  • Allergy Center at Brookstone Research - Centricity Research - HyperCore - PPD
    Columbus, Georgia 31904-2954, United States
  • Pivotal Research Solutions
    Stonecrest, Georgia 30038-2649, United States
  • ASHA Clinical Research - ClinEdge - PPDS
    Hammond, Indiana 46324-2213, United States
  • The Research Group of Lexington, LLC
    Lexington, Kentucky 40504, United States
  • Best Clinical Trials
    New Orleans, Louisiana 70115, United States
  • Paul A. Shapero, MD, PA
    Bangor, Maine 04401-5691, United States
  • Pulmonary Research Institute of Southeast Michigan
    Farmington Hills, Michigan 48336-2817, United States
  • Flushing Road Internal Medicine and Pediatrics - F
    Flint, Michigan 48504-4730, United States
  • Revive Research Institute
    Lathrup Village, Michigan 48076, United States
  • Oakland Medical Research Center
    Troy, Michigan 48085-5524, United States
  • Washington University School of Medicine in St. Louis
    St Louis, Missouri 63110, United States
  • Nebraska Medical Research Institute, Inc. - CRN
    Bellevue, Nebraska 68123-4318, United States
  • Machuca Family Medicine
    Las Vegas, Nevada 89104-3953, United States
  • Renown Regional Medical Center Hospital
    Reno, Nevada 89502-1576, United States
  • Hassman Research Institute - HRI - Berlin - CenExel - PPDS
    Marlton, New Jersey 08053, United States
  • AES - DRS - Synexus Clinical Research US, Inc. - New York
    New York, New York 10017-4008, United States
  • Research Carolina Elite
    Denver, North Carolina 28037-7929, United States
  • Pulmonix LLC
    Greensboro, North Carolina 27403, United States
  • Advanced Respiratory and Sleep Medicine, PLLC
    Huntersville, North Carolina 28078, United States
  • Southeastern Research Center
    Winston-Salem, North Carolina 27103-4029, United States
  • OK Clinical Research
    Edmond, Oklahoma 73034-3258, United States
  • The Oregon Clinic
    Portland, Oregon 97213, United States
  • Clinical Research Associates Of Central Pa , Llc
    Altoona, Pennsylvania 16602, United States
  • Allergy & Clinical Immun Assoc
    Pittsburgh, Pennsylvania 15241, United States
  • Medtrial, LLC
    Columbia, South Carolina 29204, United States
  • Velocity Clinical Research - Gaffney - PPDS
    Gaffney, South Carolina 29340-4737, United States
  • ClinSearch, LLC
    Chattanooga, Tennessee 37421, United States
  • Clinical Trials Center of Middle Tennessee
    Franklin, Tennessee 37067-5603, United States
  • Tennessee Comprehensive Lung & Sleep Center
    Hendersonville, Tennessee 37075-3085, United States
  • TTS Research
    Boerne, Texas 78006, United States
  • Corsicana Medical Research
    Corsicana, Texas 75110-2471, United States
  • Trio Clinical Trials
    Houston, Texas 77008, United States
  • Baylor College of Medicine Medical Center
    Houston, Texas 77030, United States
  • Biopharma Informatic - Park Row - PPDS
    Houston, Texas 77084, United States
  • R & H Clinical Research
    Katy, Texas 77494-2031, United States
  • University of Vermont Medical Center
    Burlington, Vermont 05401, United States
  • Western Washington Medical Group
    Everett, Washington 98208, United States
  • Allergy Asthma and Sinus Center-Greenfield
    Greenfield, Wisconsin 53228-3467, United States
  • Consultorios Medicos Organizacion de Buen Ayre SRL
    Buenos Aires, 12345, Argentina
  • Nexo Salud Investigacion Clinica - Riobamba 429
    Buenos Aires, C1025, Argentina
  • CINME S.A. ? Centro de Investigaciones Metabolicas - Rx Trials LLC
    Buenos Aires, C1027AAP, Argentina
  • Fundacion Faicep
    Buenos Aires, C1122AAK, Argentina
  • Instituto de Investigaciones En Alergia Y Enfermedades Respiratorias
    Buenos Aires, C1425, Argentina
  • AES - AS - Glenny Corp. S.A. Buenos Aires
    Buenos Aires, C1430, Argentina
  • Centro de Medicina Respiratoria
    Concepción del Uruguay, 3260, Argentina
  • Sanatorio de la Canada
    Córdoba, X5000BSQ, Argentina
  • Framingham Centro Medico
    La Plata, 1900, Argentina
  • Centro Medico Capital
    La Plata, 1904, Argentina
  • Centro Platense en Investigaciones Respiratorias
    La Plata, B1900BNN, Argentina
  • Centro Medico Dharma
    Mendoza, M5500AYB, Argentina
  • Centro Privado de Medicina Respiratoria
    Paraná, 3100, Argentina
  • Sala de primeros auxilios Alberto Mignaburu
    Ranelagh, Berazategui, 1886, Argentina
  • Instituto Medico de la Fundacion Estudios Clinicos
    Rosario, S2000DEJ, Argentina
  • Servicio de Investigacion de Patologias Alergicas-Instituto ABC
    Rosario, S2013JKR, Argentina
  • Sanatorio Parque de Rosario
    Rosario, S2013KZD, Argentina
  • Centro Modelo de Cardiologia
    San Miguel de Tucumán, 4000, Argentina
  • Centro Medico San Nicolas Grupo Orono
    San Nicolás de los Arroyos, B2900, Argentina
  • CEPROSS- Centro Profesional San Salvador
    San Salvador, E3218CHH, Argentina
  • Instituto Del Buen Aire
    Santa Fe, S3000ASF, Argentina
  • Centro de Diagnostico Y Rehabilitacion
    Santa Fe, S3000, Argentina
  • Institute for Respiratory Health - Midland
    Midland, South Australia 6056, Australia
  • Ordination Dr. Robert Voves
    Feldbach, 8330, Austria
  • Ordination fur Lungenkrankheiten
    Linz, 4020, Austria
  • AZ Sint-Jan Brugge-Oostende
    Bruges, 8000, Belgium
  • Universitair Ziekenhuis Brussel
    Brussels, 1090, Belgium
  • Cliniques Universitaires Saint-Luc
    Brussels, 1200, Belgium
  • CHU de Liège
    Liège, 4000, Belgium
  • L2IP ?Instituto de Pesquisas Clínicas Ltda.
    Brasília, Federal District 70200-730, Brazil
  • Santa Casa de Misericordia de Belo Horizonte - PPDS
    Belo Horizonte, Minas Gerais 30150-221, Brazil
  • LMK Servicos Medicos SS
    Porto Alegre, Rio Grande do Sul 90480-000, Brazil
  • Hospital Sao Lucas Da Pontificia Universidade Catolica Do Rio Grande Do Sul (PUCRS)
    Porto Alegre, Rio Grande do Sul 90610-000, Brazil
  • Faculdade de Medicina do ABC - FMABC
    Santo André, São Paulo 09060-650, Brazil
  • CEMEC - Centro Multidisciplinar de Estudos Clínicos
    São Bernardo do Campo, São Paulo 09715-090, Brazil
  • IBPCLIN Instituto Brasil de Pesquisa Clinica
    Rio de Janeiro, 20241-180, Brazil
  • Instituto do Coracao - HCFMUSP
    São Paulo, 05403-000, Brazil
  • Multiprofile Hospital for Active Treatment Puls AD PPDS
    Blagoevgrad, 2700, Bulgaria
  • Multiprofile Hospital For Active Treatment Sveta Ekaterina - Dimitrovgrad EOOD
    Dimitrovgrad, 6400, Bulgaria
  • Multiprofile Hospital For Active Treatment Dr. Tota Venkova JSC
    Gabrovo, 5300, Bulgaria
  • Medical Center Hera EOOD
    Montana, 3400, Bulgaria
  • Multiprofile Hospital for Active Treatment Plovdiv
    Plovdiv, 4003, Bulgaria
  • Multiprofile Hospital for Active Treatment Sv. Ivan Rilski- Razgrad AD
    Razgrad, 7200, Bulgaria
  • Multiprofile Hospital for Active Treatment Shumen
    Shumen, 9700, Bulgaria
  • Multiprofile Hospital for Active Treatment - Silistra AD
    Silistra, 7500, Bulgaria
  • Multiprofile Hospital For Active Treatment - Dr. Bratan Shukerov AD
    Smolyan, 4700, Bulgaria
  • Fifth Multiprofile Hospital for Active Treatment - Sofia EAD
    Sofia, 1233, Bulgaria

Showing the first 100 of 382 sites across 36 countries.

08

References and documents

Publications

  • Papi A, Greening NJ, Bhatt SP, Roche N, Celli B, Wedzicha JA, Agusti A, Tal-Singer R, Han MK, Janssens W, Hanania NA, Nair P, Bremner P, Porpodis K, Shibata Y, Korn S, Yang T, Gordon O, Saenz R, Ng J, Cheung DS, Devine J, Grimbaldeston MA, Zhang W, Yang X, Mohan D, Vogelmeier CF, Brightling CE; ALIENTO and ARNASA investigators. Safety and efficacy of astegolimab for COPD with frequent exacerbations regardless of baseline blood eosinophil counts (ALIENTO and ARNASA): randomised, double-blind, placebo-controlled, phase 2b and 3 trials. Lancet. 2026 May 23;407(10543):2027-2039. doi: 10.1016/S0140-6736(26)00637-9. Epub 2026 May 18. PubMed 42150581 ↗
  • Wedzicha JA, Agusti A, Brightling CE, Calverley P, Chalmers JD, Greening NJ, Han MK, Mohan D, Ng J, Papi A, Roche N, Saenz R, Samara K, Tal-Singer R, Vogelmeier CF, Yang X, Celli BR. Astegolimab for COPD With Frequent Exacerbations: Pooled Analysis of the ALIENTO and ARNASA Trials. Am J Respir Crit Care Med. 2026 May 18:aamag226. doi: 10.1093/ajrccm/aamag226. Online ahead of print. PubMed 42148875 ↗

Individual participant data

Plan to share: Yes — For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data\_sharing

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 20, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05595642
Lead sponsor
Hoffmann-La Roche
Responsible party
Sponsor
First posted
Oct 27, 2022
Start date
Dec 29, 2022
Primary completion
Jun 24, 2025
Completion
Sep 24, 2027 (estimated)
Last update
May 20, 2026

Study contacts

Clinical Trials
study director · Hoffmann-La Roche

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.

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