AsthmaPhase 3SWIFT-1NCT04719832
Placebo-controlled Efficacy and Safety Study of GSK3511294 (Depemokimab) in Participants With Severe Asthma With an Eosinophilic Phenotype
A Phase 3 study testing GSK3511294 (Depemokimab) in people with Asthma, run by GlaxoSmithKline at 123 sites in 12 countries.
Trial summary
This is a multi-center, randomized, placebo-controlled, double-blind, parallel group study that aims to assess the efficacy and safety of GSK3511294 (Depemokimab) in participants with severe uncontrolled asthma with an eosinophilic phenotype Read more about this study
- Who is it for?
- Ages 12 years and older
- Conditions the study is for
- Asthma
- What is being tested?
- GSK3511294 (Depemokimab)
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 395 participants
- Where
- 123 sitesin 12 countries
- Study dates
- 17 Mar 2021to 21 Nov 2023
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 12 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Adults and adolescents greater than or equal to (>=)12 years of age, at the time of signing the informed consent/assent.
- Participants must have a documented physician diagnosis of asthma for >=2 years that meets the National Heart, Lung, and Blood Institute (NHLBI) guidelines or Global Initiative for Asthma (GINA) guidelines and
- Have, or with high likelihood of having, asthma with an eosinophilic phenotype
- Have previously confirmed history of >=2 exacerbations requiring treatment with systemic corticosteroid (CS) (intramuscular [IM], intravenous [IV], or oral), in the 12 months prior to Visit 1, despite the use of medium to high-dose ICS. For participants receiving maintenance CS, the CS treatment for the exacerbations must have been a two-fold dose increase or greater.
- Persistent airflow obstruction as indicated by:
- For participants >=18 years of age at Visit 1, a pre-bronchodilator FEV1 less than (<)80% predicted (The Third National Health and Nutrition Examination Survey [NHANES III]) recorded at Visit 1
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- For participants 12-17 years of age at Visit 1:
- A pre-bronchodilator FEV1 <90% predicted (NHANES III) recorded at Visit 1 OR
- FEV1:Forced Vital Capacity (FVC) ratio <0.8 recorded at Visit 1.
- A well-documented requirement for regular treatment with medium to high dose ICS (in the 12 months prior to Visit 1 with or without maintenance OCS). The maintenance ICS dose must be >=440 micrograms (mcg) Fluticasone propionate (FP) Hydrofluoroalkane (HFA) product daily, or clinically comparable (GINA). Participants who are treated with medium dose ICS will also need to be treated with LABA to qualify for inclusion.
- Current treatment with at least one additional controller medication, besides ICS, for at least 3 months (for example [e.g.], LABA, LAMA, leukotriene receptor antagonist [LTRA], or theophylline).
- Key randomization inclusion criteria:
- For blood eosinophilic count:
- An elevated peripheral blood eosinophil count of >=300 cells/microliter (mcL) demonstrated in the past 12 months prior to Visit 1 that is related to asthma OR
- An elevated peripheral blood eosinophil count of >=150 cells/mcL at Screening Visit 1 that is related to asthma.
- Evidence of airway reversibility or responsiveness as documented by either:
- Airway reversibility (FEV1>=12% and 200 milliliters [mL]) demonstrated at Visit 1 or Visit 2 using the Maximum Post Bronchodilator Procedure OR
- Airway reversibility (FEV1>=12% and 200 mL) documented in the 24 months prior to Visit 2 (randomization visit) OR
- Airway hyperresponsiveness (methacholine: Provocative concentration causing a 20% fall in FEV1 [PC20] of <8 milligrams (mg)/mL, histamine: PD20 of <7.8 micromoles, mannitol: decrease in FEV1 as per the labelled product instructions) documented in the 24 months prior to Visit 2 (randomization visit).
Who cannot join
- Presence of a known pre-existing, clinically important lung condition other than asthma. This includes (but is not limited to) current infection, bronchiectasis, pulmonary fibrosis, bronchopulmonary aspergillosis, or diagnoses of emphysema or chronic bronchitis (chronic obstructive pulmonary disease other than asthma) or a history of lung cancer.
- Participants with other conditions that could lead to elevated eosinophils such as hyper-eosinophilic syndromes including (but not limited to) Eosinophilic Granulomatosis with Polyangiitis (EGPA, formerly known as Churg-Strauss Syndrome) or Eosinophilic Esophagitis.
- A current malignancy or previous history of cancer in remission for less than 12 months prior to screening (Participants that had localized carcinoma of the skin which was resected for cure will not be excluded).
- Cirrhosis or current unstable liver or biliary disease per investigator assessment defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminemia, esophageal or gastric varices, persistent jaundice.
- Participants with current diagnosis of vasculitis. Participants with high clinical suspicion of vasculitis at screening will be evaluated and current vasculitis must be excluded prior to enrolment.
- Participants who have received mepolizumab (Nucala), reslizumab (Cinqair/Cinqaero), or benralizumab (Fasenra) within 12 months prior to Visit 1 or who have a previous documented failure with anti-IL-5/5 receptor (R) therapy.
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- Participants who have received omalizumab (Xolair) or dupilumab (Dupixent) within 130 days prior to Visit.
- Participants who have received any monoclonal antibody (mAb) within 5 half-lives of Visit 1.
- Previously participated in any study with mepolizumab, reslizumab, or benralizumab and received study intervention (including placebo) within 12 months prior to Visit 1.
- The QT interval corrected using Fridericia's formula (QTcF) >=450 milliseconds (msec) or QTcF >=480 msec for participants with Bundle Branch Block at screening Visit 1.
- Current smokers or former smokers with a smoking history of >=10 pack years (number of pack years = [number of cigarettes per day/20] times number of years smoked). A former smoker is defined as a participant who quit smoking at least 6 months prior to Visit 1.
- Participants with allergy/intolerance to the excipients of GSK3511294 or a any mAb or biologic.
- Key radomization exclusion criteria:
- QTcF >=450 msec or QTcF >=480 msec for participants with Bundle Branch Block, at randomization Visit 2 are excluded. Participants are excluded if an abnormal ECG finding from the 12-lead ECG conducted at Screening Visit 1 is considered to be clinically significant and would impact the participant's participation during the study, based on the evaluation of the Investigator.
- Participants with a clinically significant asthma exacerbation in the 7 days prior to randomization should have their randomization visit delayed until the investigator considers the participant's asthma to be stable .
- Any changes in the dose or regimen of Baseline ICS and/or additional controller medication (except for treatment of an exacerbation) during the run-in period.
Trial locations and contacts
123 sites in 12 countries.
123 sites in 12 countries
United States30 sites
GSK Investigational Site
Alpharetta, Georgia, 30022
GSK Investigational Site
Boerne, Texas, 78006
GSK Investigational Site
Calhoun, Georgia, 30103
GSK Investigational Site
Cleveland, Ohio, 44106
GSK Investigational Site
Columbus, Georgia, 31326
GSK Investigational Site
Coral Gables, Florida, 33134
GSK Investigational Site
Cypress, Texas, 77099
GSK Investigational Site
Cypress, Texas, 77429
GSK Investigational Site
Dallas, Texas, 75235
GSK Investigational Site
Encinitas, California, 92024
GSK Investigational Site
Gastonia, North Carolina, 28054
GSK Investigational Site
Kerrville, Texas, 78028
GSK Investigational Site
Las Vegas, Nevada, 89123
GSK Investigational Site
Lexington, Kentucky, 40509
GSK Investigational Site
Long Beach, California, 90806
GSK Investigational Site
Loxahatchee Groves, Florida, 33470-9272
GSK Investigational Site
Miami, Florida, 33125
GSK Investigational Site
Miami, Florida, 33144
GSK Investigational Site
New Port Richey, Florida, 34655
GSK Investigational Site
New York, New York, 10036
GSK Investigational Site
Normal, Illinois, 61761
GSK Investigational Site
Orlando, Florida, 32806
GSK Investigational Site
Owensboro, Kentucky, 42301
GSK Investigational Site
Pasadena, California, 91105
GSK Investigational Site
Rancho Cucamonga, California, 91730
GSK Investigational Site
Rochester Hills, Michigan, 48507
GSK Investigational Site
San Antonio, Texas, 78258
GSK Investigational Site
San Jose, California, 95117
GSK Investigational Site
Savannah, Georgia, 31406
GSK Investigational Site
The Bronx, New York, 10459-2417
China26 sites
GSK Investigational Site
Changchun, 130021
GSK Investigational Site
Changchun, 132011
GSK Investigational Site
Changsha, 410013
GSK Investigational Site
Chengdu, 610041
GSK Investigational Site
Guangzhou, 500000
GSK Investigational Site
Guangzhou, 510115
GSK Investigational Site
Guangzhou, 510120
GSK Investigational Site
Guangzhou, 510150
GSK Investigational Site
Hangzhou, 310009
GSK Investigational Site
Hefei, 230001
GSK Investigational Site
Hohhot, 010017
GSK Investigational Site
Hohhot, 010050
GSK Investigational Site
Jinan, 250014
GSK Investigational Site
Sanya, 570311
GSK Investigational Site
Shanghai, 200040
GSK Investigational Site
Shanghai, 200065
GSK Investigational Site
Shanghai, 200090
GSK Investigational Site
Shenyang, 110004
GSK Investigational Site
Shenyang, 110016
GSK Investigational Site
Shenzhen, 518020
GSK Investigational Site
Ürümqi, 830054
GSK Investigational Site
Wenzhou, 325000
GSK Investigational Site
Wuhan, 430030
GSK Investigational Site
Xi'an, 710061
GSK Investigational Site
Xuzhou, 221006
GSK Investigational Site
Zhanjiang, 524000
Germany11 sites
GSK Investigational Site
Aschaffenburg, 63739
GSK Investigational Site
Berlin, 10367
GSK Investigational Site
Frankfurt, 60389
GSK Investigational Site
Hamburg, 22299
GSK Investigational Site
Koblenz, 56068
GSK Investigational Site
Leipzig, 04275
GSK Investigational Site
Leipzig, 04357
GSK Investigational Site
Magdeburg, 39120
GSK Investigational Site
Mainz, 60549
GSK Investigational Site
Neu-Isenburg, 63263
GSK Investigational Site
Schleswig, 24837
Spain10 sites
GSK Investigational Site
Barcelona, 08006
GSK Investigational Site
Barcelona, 08035
GSK Investigational Site
Benalmádena, 29631
GSK Investigational Site
Girona, 17005
GSK Investigational Site
Granada, 18014
GSK Investigational Site
Madrid, 28031
GSK Investigational Site
Palma de Mallorca, 07010
GSK Investigational Site
Santa Cruz de Tenerife, 38010
GSK Investigational Site
Valencia, 46015
GSK Investigational Site
Valencia, 46017
Poland8 sites
GSK Investigational Site
Kielce, 25-355
GSK Investigational Site
Krakow, 30-033
GSK Investigational Site
Lodz, 90-242
GSK Investigational Site
Lublin, 20-552
GSK Investigational Site
Strzelce Opolskie, 47-120
GSK Investigational Site
Tarnów, 33-100
GSK Investigational Site
Wroclaw, 53-201
GSK Investigational Site
Wroclaw, 54-239
Russia8 sites
GSK Investigational Site
Kemerovo, 650002
GSK Investigational Site
Moscow, 115093
GSK Investigational Site
Moscow, 123995
GSK Investigational Site
Novosibirsk, 630008
GSK Investigational Site
Saint Petersburg, 191025
GSK Investigational Site
Saint Petersburg, 193312
GSK Investigational Site
Saint Petersburg, 197022
GSK Investigational Site
Yaroslavl, 150047
France6 sites
GSK Investigational Site
Besançon, 25030
GSK Investigational Site
Cholet, 49300
GSK Investigational Site
Marseille, 13003
GSK Investigational Site
Montpellier, 34295
GSK Investigational Site
Nice, 06001
GSK Investigational Site
Tarbes, 65013
Italy6 sites
GSK Investigational Site
Bergamo, 24127
GSK Investigational Site
Milan, 20122
GSK Investigational Site
Modena, 41124
GSK Investigational Site
Pavia, 27100
GSK Investigational Site
Roma, 00168
GSK Investigational Site
Vicenza, 36100
United Kingdom6 sites
GSK Investigational Site
Birmingham, B9 5SS
GSK Investigational Site
Bradford, BD9 6RJ
GSK Investigational Site
Chertsey, KT16 0PZ
GSK Investigational Site
London, EC1M 6BQ
GSK Investigational Site
Manchester, M8 5RB
GSK Investigational Site
Nottingham, NG5 1PB
Canada5 sites
GSK Investigational Site
Ajax, Ontario, L1S 2J5
GSK Investigational Site
Niagara Falls, Ontario, L2H 1H5
GSK Investigational Site
Ottawa, Ontario, K1G 6C6
GSK Investigational Site
Québec, Quebec, G1G 3Y8
GSK Investigational Site
Windsor, Ontario, N8X 1T3
Czechia5 sites
GSK Investigational Site
Brno, 625 00
GSK Investigational Site
Hradec Králové, 50333
GSK Investigational Site
Jindřichův Hradec, 377 01
GSK Investigational Site
Olomouc, 779 00
GSK Investigational Site
Strakonice, 386 01
Ireland2 sites
GSK Investigational Site
Cork, 00000
GSK Investigational Site
Dublin, D09 V2N0
About this study
Official title: A 52-week, Randomised, Double-blind, Placebo-controlled, Parallel-group, Multi-centre Study of the Efficacy and Safety of GSK3511294 Adjunctive Therapy in Adult and Adolescent Participants With Severe Uncontrolled Asthma With an Eosinophilic Phenotype
This is a multi-center, randomized, placebo-controlled, double-blind, parallel group study that aims to assess the efficacy and safety of GSK3511294 (Depemokimab) in participants with severe uncontrolled asthma with an eosinophilic phenotype
- Conditions
- Asthma
- Being tested
- GSK3511294 (Depemokimab), Placebo
- Keywords
- GSK3511294 (Depemokimab), Eosinophilic phenotype, Severe uncontrolled asthma, Exacerbations, Placebo
- Medical subject headings
- Asthma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
GSK3511294 (Depemokimab)Biological
GSK3511294 (Depemokimab) will be administered using a pre-filled syringe.
PlaceboDrug
Matching placebo will be administered as a normal saline using a pre-filled syringe.
| Study group | Role | What they receive |
|---|---|---|
| GSK3511294 | Experimental | Participants received a 100 milligram (mg) dose of GSK3511294 SC injection once every 26 weeks (week 0 and week 26). Participants were to be maintained on their existing baseline maintenance asthma SOC treatment throughout the study. Receives: Biological: GSK3511294 (Depemokimab) |
| Placebo | Placebo comparator | Participants received placebo subcutaneous (SC) injection once every 26 weeks (week 0 and week 26). Participants were to be maintained on their existing baseline maintenance asthma standard of care (SOC) treatment throughout the study. Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Annualized Rate of Clinically Significant Exacerbations up to 52 Weeks
Clinically significant exacerbations recorded were defined as worsening of asthma requiring the use of systemic corticosteroids (CS) [such as intramuscular (IM), intravenous (IV) or oral] and/or hospitalization and/or Emergency Department (ED) visit. For all participants, IV or oral steroids (e.g., prednisone) for at least 3 days or a single IM corticosteroid dose is required. For participants on maintenance systemic corticosteroids, at least double the existing maintenance dose for at least 3 days is required. Exacerbations recorded in the electronic case report form (eCRF) were considered as verified clinically significant exacerbations and included in the primary analysis. Exacerbations separated by less than 7 days was treated as a continuation of the same exacerbation.
Measured: Up to Week 52
Secondary outcomes (6)
Change From Baseline in St. George's Respiratory Questionnaire (SGRQ) Total Score at Week 52
The SGRQ is a 50-item patient-reported outcome tool used to measure Quality of Life in participants with airway obstruction diseases. The questions are designed to be self-completed by the participant. The total score was calculated by the symptom score, activity and impact score; and summarizing the impact of the disease on overall health status on 0-100 rating scale. Scores are expressed as a percentage of overall impairment where 100 representing worst possible health status and 0 indicating best possible health status. Higher scores indicating greater impairment of quality of life. Change from Baseline was defined as value at the indicated time point minus Baseline value.
Measured: Baseline (Day 1) and Week 52
Change From Baseline in Asthma Control Questionnaire-5 (ACQ-5) Score at Week 52
The ACQ-5 is a five-item questionnaire developed as a measure of participants asthma symptom control. The questions are designed to be self-completed by the participant. The 5 questions enquired to recall how their asthma had been during the previous week and to respond about the frequency and/or severity of symptoms (nocturnal awakening, waking in the morning, activity limitation, shortness of breath and wheezing). The overall ACQ-5 response option is the mean score of all 5 questions representing 0 with no impairment/limitation and 6 as total impairment/ limitation. Higher scores indicated more limitations and lower score with better asthma control. Change from Baseline was defined as value at the indicated time point minus Baseline value.
Measured: Baseline (Day 1) and Week 52
Change From Baseline in Pre-Bronchodilator Forced Expiratory Volume in One Second (FEV1) At Week 52
Forced Expiratory Volume in One Second (FEV1) is defined as the volume of air that can be forced out in one second after taking a deep breath by a person and will be measured by spirometry testing. Change from Baseline in clinic pre-bronchodilator FEV1 was determined. Change from Baseline was defined as value at the indicated time point minus Baseline value.
Measured: Baseline (Day 1) and Week 52
Change From Baseline in Asthma Nighttime Symptom Diary (ANSD) Weekly Mean Score at Week 52
The ANSD is a 6-item self-administered patient reported diary developed by Patient Related Outcomes (PRO) Consortium's Asthma Working Group to facilitate comprehensive and reliable assessment of asthma symptoms from a participant's perspective. Participants were required to rate the severity of symptoms in 3 core categories: breathing symptoms (wheezing, shortness of breath), chest symptoms (chest tightness, chest pain) and cough. The ANSD was to be completed before going to bed and refers to asthma symptoms during the day. Symptoms are rated at their worst using an 11-point numeric rating scale ranging from 0 (None) to 10 (As bad as you can imagine). Higher scores indicate more severe symptoms. Mean daily scores of ANSD was calculated by weekly intervals. The baseline values were defined as the average score from Day -7 to Day -1 inclusive (at least 4 days must be non-missing). Change from Baseline was defined as value at each time point minus Baseline value.
Measured: Baseline to Week 52
Change From Baseline in Asthma Daily Symptom Diary (ADSD) Weekly Mean Score at Week 52
The ADSD is a 6-item self-administered patient reported diary developed by patient related outcomes (PRO) Consortium's Asthma Working Group to facilitate comprehensive and reliable assessment of asthma symptoms from a participant's perspective. Participants were required to rate the severity of symptoms in 3 core categories: breathing symptoms (wheezing, shortness of breath), chest symptoms (chest tightness, chest pain) and cough. The ADSD was to be completed upon waking and refers to asthma symptoms during the night-time. Symptoms are rated at their worst using an 11-point numeric rating scale ranging from 0 (None) to 10 (As bad as you can imagine). Higher scores indicate more severe symptoms. Mean daily scores of ADSD was calculated by weekly intervals. The baseline values were defined as the average score from Day -7 to Day -1 inclusive (at least 4 days must be non-missing). Change from Baseline was defined as value at each time point minus Baseline value.
Measured: Baseline to Week 52
Annualized Rate of Exacerbations Requiring Hospitalization and/or Emergency Department (ED) Visit up to 52 Weeks
The data did not meet the condition (total of 20 or more exacerbations requiring hospitalization and/or ED visit) for conducting the statistical analysis. The number of exacerbations requiring Hospitalization and/or ED Visit are reported here.
Measured: Up to Week 52
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jan 2021
- Study start17 Mar 2021
- Primary completion21 Nov 2023
- Study completion21 Nov 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for AsthmaStudies of the same condition, open and under way.
- More trials run by GlaxoSmithKlineThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 395 participants (actual)
Sponsor and investigators
- Lead sponsor
- GlaxoSmithKline
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- IQVIA Pty Ltd
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, GlaxoSmithKline
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04719832
- Sponsor's protocol ID
- 206713
- Acronym
- SWIFT-1
- Status last verified
- Nov 2024
- First submitted
- 18 Jan 2021
- Last updated
- 17 Dec 2024
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: IPD for this study will be made available via the Clinical Study Data Request site.
Publications
Wechsler ME, Pfeffer PE, Bernstein DI, Chen R, Koya T, Jackson DJ, Pavord ID, Chanez P, Bourdin A, Jarreta D, Muccino D, Tacon C, Vichiendilokkul A, Zhu CQ, Jackson DJ. Long-term safety and efficacy of twice-yearly depemokimab in type 2 asthma with an eosinophilic phenotype: 2-year integrated analysis of the phase 3a SWIFT-1 and SWIFT-2 studies and AGILE open-label extension. Lancet Respir Med. 2026 Oct 29:S2213-2600(26)00259-6. doi: 10.1016/S2213-2600(26)00259-6. Online ahead of print.
PubMed 42956801Keeley T, O'Neill D, Dikariyanto V, Dumi G, Fromy P, Markov F, Richards A, Alfonso-Cristancho R. Validity, reliability, and longitudinal measurement properties of the Asthma Daytime and Nighttime Symptom Diaries in patients with moderate-to-severe asthma. J Patient Rep Outcomes. 2026 May 20;10(1):89. doi: 10.1186/s41687-026-01066-5.
PubMed 42159666Jackson DJ, Bourdin A, Blackorby A, Leslie A, Vichiendilokkul A, Howarth P, Karkoszka N, Fujieda S, Cornet M. Safety and Tolerability of Twice-Yearly Depemokimab in Patients with Asthma and Chronic Rhinosinusitis with Nasal Polyps: Pooled Results from SWIFT-1/-2 and ANCHOR-1/-2. Adv Ther. 2026 Feb;43(2):880-897. doi: 10.1007/s12325-025-03457-4. Epub 2025 Dec 29.
PubMed 41461999Jackson DJ, Wechsler ME, Jackson DJ, Bernstein D, Korn S, Pfeffer PE, Chen R, Saito J, de Luiz Martinez G, Dymek L, Jacques L, Bird N, Schalkwijk S, Smith D, Howarth P, Pavord ID; SWIFT-1 and SWIFT-2 Investigators; SWIFT-1 Investigators; SWIFT-2 Investigators. Twice-Yearly Depemokimab in Severe Asthma with an Eosinophilic Phenotype. N Engl J Med. 2024 Dec 19;391(24):2337-2349. doi: 10.1056/NEJMoa2406673. Epub 2024 Sep 9.
PubMed 39248309
Study at a glance
From the registry record, last updated by the sponsor on 17 Dec 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A 52-week, Randomised, Double-blind, Placebo-controlled, Parallel-group, Multi-centre Study of the Efficacy and Safety of GSK3511294 Adjunctive Therapy in Adult and Adolescent Participants With Severe Uncontrolled Asthma With an Eosinophilic Phenotype
- ClinicalTrials.gov ID
- NCT04719832
- Acronym / sponsor ID
- SWIFT-1 / 206713
- Conditions
- Asthma
- Keywords
- GSK3511294 (Depemokimab), Eosinophilic phenotype, Severe uncontrolled asthma, Exacerbations, Placebo
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 395 participants (actual)
- Lead sponsor
- GlaxoSmithKlineIndustry (pharma, biotech, devices)
- Collaborators
- IQVIA Pty Ltd
- Study start
- 17 Mar 2021 (actual)
- Primary completion
- 21 Nov 2023 (actual)
- Study completion
- 21 Nov 2023 (actual)
- First posted
- 22 Jan 2021 (actual)
- Results
- Posted 17 Dec 2024
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a multi-center, randomized, placebo-controlled, double-blind, parallel group study that aims to assess the efficacy and safety of GSK3511294 (Depemokimab) in participants with severe uncontrolled asthma with an eosinophilic phenotype
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| GSK3511294 | Experimental | Biological: GSK3511294 (Depemokimab)Participants received a 100 milligram (mg) dose of GSK3511294 SC injection once every 26 weeks (week 0 and week 26). Participants were to be maintained on their existing baseline maintenance asthma SOC treatment throughout the study. |
| Placebo | Placebo comparator | Drug: PlaceboParticipants received placebo subcutaneous (SC) injection once every 26 weeks (week 0 and week 26). Participants were to be maintained on their existing baseline maintenance asthma standard of care (SOC) treatment throughout the study. |
Who may qualify
- Ages
- 12 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (19 listed)
- Adults and adolescents greater than or equal to (>=)12 years of age, at the time of signing the informed consent/assent.
- Participants must have a documented physician diagnosis of asthma for >=2 years that meets the National Heart, Lung, and Blood Institute (NHLBI) guidelines or Global Initiative for Asthma (GINA) guidelines and
- Persistent airflow obstruction as indicated by:
- A well-documented requirement for regular treatment with medium to high dose ICS (in the 12 months prior to Visit 1 with or without maintenance OCS). The maintenance ICS dose must be >=440 micrograms (mcg) Fluticasone propionate (FP) Hydrofluoroalkane (HFA) product daily, or clinically comparable (GINA). Participants who are treated with medium dose ICS will also need to be treated with LABA to qualify for inclusion.
- Current treatment with at least one additional controller medication, besides ICS, for at least 3 months (for example [e.g.], LABA, LAMA, leukotriene receptor antagonist [LTRA], or theophylline).
Key exclusion criteria (16 listed)
- Presence of a known pre-existing, clinically important lung condition other than asthma. This includes (but is not limited to) current infection, bronchiectasis, pulmonary fibrosis, bronchopulmonary aspergillosis, or diagnoses of emphysema or chronic bronchitis (chronic obstructive pulmonary disease other than asthma) or a history of lung cancer.
- Participants with other conditions that could lead to elevated eosinophils such as hyper-eosinophilic syndromes including (but not limited to) Eosinophilic Granulomatosis with Polyangiitis (EGPA, formerly known as Churg-Strauss Syndrome) or Eosinophilic Esophagitis.
- A current malignancy or previous history of cancer in remission for less than 12 months prior to screening (Participants that had localized carcinoma of the skin which was resected for cure will not be excluded).
- Cirrhosis or current unstable liver or biliary disease per investigator assessment defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminemia, esophageal or gastric varices, persistent jaundice.
- Participants with current diagnosis of vasculitis. Participants with high clinical suspicion of vasculitis at screening will be evaluated and current vasculitis must be excluded prior to enrolment.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| GSK3511294 (Depemokimab)GSK3511294 (Depemokimab) will be administered using a pre-filled syringe. | Biological | GSK3511294 |
| PlaceboMatching placebo will be administered as a normal saline using a pre-filled syringe. | Drug | Placebo |
Primary outcome
Annualized Rate of Clinically Significant Exacerbations up to 52 Weeks
Time frame: Up to Week 52
Clinically significant exacerbations recorded were defined as worsening of asthma requiring the use of systemic corticosteroids (CS) [such as intramuscular (IM), intravenous (IV) or oral] and/or hospitalization and/or Emergency Department (ED) visit. For all participants, IV or oral steroids (e.g., prednisone) for at least 3 days or a single IM corticosteroid dose is required. For participants on maintenance systemic corticosteroids, at least double the existing maintenance dose for at least 3 days is required. Exacerbations recorded in the electronic case report form (eCRF) were considered as verified clinically significant exacerbations and included in the primary analysis. Exacerbations separated by less than 7 days was treated as a continuation of the same exacerbation.
6 secondary outcomes
Change From Baseline in St. George's Respiratory Questionnaire (SGRQ) Total Score at Week 52
Time frame: Baseline (Day 1) and Week 52
Change From Baseline in Asthma Control Questionnaire-5 (ACQ-5) Score at Week 52
Time frame: Baseline (Day 1) and Week 52
Change From Baseline in Pre-Bronchodilator Forced Expiratory Volume in One Second (FEV1) At Week 52
Time frame: Baseline (Day 1) and Week 52
Change From Baseline in Asthma Nighttime Symptom Diary (ANSD) Weekly Mean Score at Week 52
Time frame: Baseline to Week 52
Change From Baseline in Asthma Daily Symptom Diary (ADSD) Weekly Mean Score at Week 52
Time frame: Baseline to Week 52
Annualized Rate of Exacerbations Requiring Hospitalization and/or Emergency Department (ED) Visit up to 52 Weeks
Time frame: Up to Week 52
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Dec 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 42956801Wechsler ME, Pfeffer PE, Bernstein DI, Chen R, Koya T, Jackson DJ, Pavord ID, Chanez P, Bourdin A, Jarreta D, Muccino D, Tacon C, Vichiendilokkul A, Zhu CQ, Jackson DJ. Long-term safety and efficacy of twice-yearly depemokimab in type 2 asthma with an eosinophilic phenotype: 2-year integrated analysis of the phase 3a SWIFT-1 and SWIFT-2 studies and AGILE open-label extension. Lancet Respir Med. 2026 Oct 29:S2213-2600(26)00259-6. doi: 10.1016/S2213-2600(26)00259-6. Online ahead of print.
- Derived from this study: PubMed 42159666Keeley T, O'Neill D, Dikariyanto V, Dumi G, Fromy P, Markov F, Richards A, Alfonso-Cristancho R. Validity, reliability, and longitudinal measurement properties of the Asthma Daytime and Nighttime Symptom Diaries in patients with moderate-to-severe asthma. J Patient Rep Outcomes. 2026 May 20;10(1):89. doi: 10.1186/s41687-026-01066-5.
- Derived from this study: PubMed 41461999Jackson DJ, Bourdin A, Blackorby A, Leslie A, Vichiendilokkul A, Howarth P, Karkoszka N, Fujieda S, Cornet M. Safety and Tolerability of Twice-Yearly Depemokimab in Patients with Asthma and Chronic Rhinosinusitis with Nasal Polyps: Pooled Results from SWIFT-1/-2 and ANCHOR-1/-2. Adv Ther. 2026 Feb;43(2):880-897. doi: 10.1007/s12325-025-03457-4. Epub 2025 Dec 29.
- Derived from this study: PubMed 39248309Jackson DJ, Wechsler ME, Jackson DJ, Bernstein D, Korn S, Pfeffer PE, Chen R, Saito J, de Luiz Martinez G, Dymek L, Jacques L, Bird N, Schalkwijk S, Smith D, Howarth P, Pavord ID; SWIFT-1 and SWIFT-2 Investigators; SWIFT-1 Investigators; SWIFT-2 Investigators. Twice-Yearly Depemokimab in Severe Asthma with an Eosinophilic Phenotype. N Engl J Med. 2024 Dec 19;391(24):2337-2349. doi: 10.1056/NEJMoa2406673. Epub 2024 Sep 9.
- Individual participant dataSharing planned: Yes. IPD for this study will be made available via the Clinical Study Data Request site.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
GSK Clinical Trials study director
GlaxoSmithKline
123 sites in 12 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing GSK3511294 (Depemokimab) in people with Asthma, run by GlaxoSmithKline at 123 sites in 12 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 19 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 17 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 123 sites in United States, China, Germany, Spain, Poland and 7 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 17 Dec 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Annualized Rate of Clinically Significant Exacerbations up to 52 Weeks (time frame: Up to Week 52). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04719832, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Dec 2024.