AsthmaPhase 1NCT05140200

Study of GSK3511294 in Healthy Chinese Participants

A Phase 1 study testing Depemokimab in people with Asthma, run by GlaxoSmithKline at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Trial summary

This single dose pharmacokinetic (PK) study aims to investigate the PK, safety, tolerability and immunogenicity of two dose levels of GSK3511294 administered subcutaneously in Chinese healthy participants Read more about this study

Who is it for?: Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for: Asthma
What is being tested?: Depemokimab
Type of treatment: Injection or infusion
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 20 participants
Where: 1 siteChina
Study dates: 10 Dec 2021to 23 Dec 2022
Phase: Phase 1
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 18 to 45 years
All sexes
Healthy volunteers accepted
Adult

Who may be able to join

Participant between 18 to 45 years of age.
Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, electrocardiograms and vital signs.
Body weight greater than or equal to (>=)50.0 kilograms (kg) for males, >=45.0 kg for females, and body mass index (BMI) within the range (19.0-26.0) kg/meter square (m^2) (inclusive).
Contraceptive use by men and/or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
Capable of giving signed informed consent.

Who cannot join

Participant is pregnant, breastfeeding, or a woman of childbearing potential
History or presence of cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, or neurological disorders capable of significantly altering the absorption, metabolism, or elimination of drugs
Participants with allergy/intolerance to a monoclonal antibody or biologic or participants with a previous history of clinically significant multiple or severe allergic reactions/intolerance
Current evidence or recent history of an infective illness
A positive pre-study drug/alcohol screen or a history (or suspected history) of alcohol misuse or substance abuse
Clinically significant abnormalities
Participants with Coronavirus Disease-2019 (COVID-19)
With prior/concurrent clinical study experience.

Trial locations and contacts

1 site in 1 country.

China1 site

GSK Investigational Site
Hangzhou, 310006

Other trials in China

About this study

Official title: An Open-label, Single Dose Study to Investigate the Pharmacokinetics, Safety, Tolerability and Immunogenicity of Two Dose Levels of GSK3511294 Administered Subcutaneously in Chinese Healthy Participants

Conditions: Asthma
Being tested: Depemokimab
Keywords: Single dose study, Immunogenicity, GSK3511294, Chinese healthy participants
Medical subject headings: Asthma

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

DepemokimabBiological
Also called GSK3511294
Depemokimab was administered.

Study groups in NCT05140200
Study group	Role	What they receive
Depemokimab 100mg	Experimental	Healthy Chinese participants received a single dose of 100 mg Depemokimab subcutaneously on Day 1. Receives: Biological: Depemokimab
Depemokimab 300mg	Experimental	Healthy Chinese participants received a single dose of 300 mg Depemokimab subcutaneously on Day 1. Receives: Biological: Depemokimab

What is being measured

The primary outcome is the main question the study is designed to answer.

Area Under the Plasma Concentration-Time Curve (AUC) From Time Zero (Pre-Dose) Extrapolated to Infinite Time (AUC[0-Infinity]) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Infinity). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Day 1 (Pre-dose, 2h, and 8h Post-dose), Day 2, Day 3, Day 5, Day 8, Day 15, Day 29, Day 57, Day 85, Day 127, Day 169, and Day 183
AUC From Time 0 (Pre-Dose) to Last Time of Quantifiable Concentration Within a Participant Across All Treatments (AUC[0-T]) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-T). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Day 1 (Pre-dose, 2h, and 8h Post-dose), Day 2, Day 3, Day 5, Day 8, Day 15, Day 29, Day 57, Day 85, Day 127, Day 169, and Day 183
AUC From Time 0 (Pre-dose) to Week 4 (AUC[0-Week 4]) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Week 4). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 4 post-dose correlates to Day 1 plus 28 days, that is, Day 29.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, and 29
AUC From Time 0 (Pre-dose) To Week 12 (AUC[0-Week 12]) Of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Week 12). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 12 post-dose correlates to Day 1 plus 84 days, that is, Day 85.
Measured: Pre-dose (Day 1); 2 h, 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, and 85
AUC From Time 0 (Pre-dose) To Week 26 [AUC(0-Week 26)] of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Week 26). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Percentage Of AUC(0-Infinity) Obtained by Extrapolation (%AUCex) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for percentage of AUC(0-Infinity) obtained by extrapolation. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Maximum Observed Plasma Concentration (Cmax) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for Cmax. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Time of Occurrence of Cmax (Tmax) Of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for Tmax. Pharmacokinetic parameters were calculated by standard non compartmental analysis. Tmax was determined directly from the plasma concentration-time data. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Time To Last Quantifiable Concentration (Tlast) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for Tlast. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Apparent Clearance (CL/F) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for Apparent Clearance. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Apparent Volume of Distribution (Vz/F) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for apparent volume of distribution. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Terminal Elimination Rate Constant (Lambda Z) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for Terminal elimination rate constant. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Terminal Phase Half-Life (T1/2) of Depemokimab
Blood samples were collected from participants at indicated time points and analyzed for Terminal phase half-life. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Measured: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183

Secondary outcomes (20)

Number of Participants With Adverse Events (AE) And Serious Adverse Events (SAEs)
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. An SAE is any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, or is considered or defined as an important medical event.
Measured: From the start of the study intervention (Day 1) up to Day 211 (End of follow-up)
Change From Baseline in Hematology Parameter: Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelets, and Leukocytes
Blood samples were collected for the assessment of hematology parameters including (WBC) count with differential that is, Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelets, and Leukocytes. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and Week 26
Change From Baseline in Hematology Parameter: Hemoglobin
Blood samples were collected for the assessment of change from baseline in hematology parameters including Hemoglobin. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Hematocrit
Blood samples were collected for the assessment of change from baseline in hematology parameters including Hematocrit. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Mean Corpuscular Volume (MCV)
Blood samples were collected for the assessment of change from baseline in hematology parameters including mean corpuscular volume. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Mean Corpuscular Hemoglobin (MCH)
Blood samples were collected for the assessment of change from baseline in hematology parameters including mean Corpuscular Hemoglobin. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Reticulocytes
Blood samples were collected for the assessment of change from baseline in hematology parameters including Reticulocytes. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and Week 26
Change From Baseline In Hematology Parameter: Erythrocytes
Change from baseline in hematology parameter including Erythrocytes. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and Week 26
Change From Baseline in Clinical Chemistry Parameters: Sodium, Potassium, Calcium, Glucose And Urea
Blood samples was collected for the assessment of clinical chemistry parameters including Sodium, potassium, calcium, glucose, and urea. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Pre-dose on Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline in Clinical Chemistry Parameter: Direct Bilirubin, Bilirubin, and Creatinine
Blood samples was collected for the assessment of clinical chemistry parameters including direct bilirubin, bilirubin, and creatinine[MB10.1]. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline in Clinical Chemistry Parameters: Alkaline Phosphate (ALP), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), and Gamma Glutamyl Transferase (GGT)
Blood samples was collected for the assessment of clinical chemistry parameters including AST, ALT, ALP, and GGT. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline In Clinical Chemistry Parameter of Albumin and Total Protein
Blood samples was collected for the assessment of clinical chemistry parameters including Albumin. and Total Protein. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Absolute Values of Complement C3 And C4 at Each Timepoint
Blood samples were collected at indicated timepoints for analysis for complement (C3 and C4). Baseline was defined as latest pre-dose assessment with a non-missing value.
Measured: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Ratio to Baseline at Each Timepoint of Complement C3 And C4
Blood samples were collected at indicated timepoints for analysis for complement (C3 and C4). Baseline was defined as latest pre-dose assessment with a non-missing value.
Measured: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline in Systolic and Diastolic Blood Pressure
Systolic blood pressure (sBP) is a measure of blood pressure while the heart is beating. Diastolic blood pressure (dBP) is a measure of blood pressure while the heart is relaxed. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Day 1 (2 hours), Day 1 (8 hours), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Body Temperature
Body temperature was measured in participants in resting state. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Day 1 (2 hours), Day 1 (8 hours), Day 2, 3, 5, Week 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Pulse Rate
The vital signs followed in this analysis was pulse rate, expressed as beats per minute (bpm). Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Day 1 (2 hour), Day 1 (8 hour), Day 2, 3, 5, Week 1, 4, 8, 12, 18, 24 and Week 26
Change From Baseline in ECG Parameters: PR Interval, Aggregate, QRS Duration, Aggregate, QT Interval, Aggregate, QTcF Interval, Aggregate
12-lead ECG were performed in a supine position using an automated ECG machine that calculated the heart rate and measured PR interval, QRS duration, QT interval and corrected QT using Fridericia's Formula (QTc[MB13.1]F) intervals. ECG measurements were performed in triplicate. When multiple ECGs were performed at the same planned timepoint, the aggregate [MB14.1]value of each parameter was used. Baseline was defined as latest pre-dose assessment with a non-missing value. Change from Baseline was defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day -1), Day 1 (2 hour), Day 1 (8 hour), Day 2, 3, 5, Week 1, 4, 8, 12, 18, 24 and Week 26
Number of Participants With Positive Anti-drug Antibodies (ADAs) Against Depemokimab
Serum samples were collected to determine the presence of anti-depemokimab binding antibodies using a validated bioanalytical method. Data is reported by visit. The results were categorized as negative and positive. A participant is considered positive if they have at least one positive post-Baseline ADA result. Number of participants with positive ADAs against depemokimab was reported in this outcome measure.
Measured: Day 1 (Pre-dose), Week 4, Week 12, and Week 26
Titres of Binding ADA's to Depemokimab
Serum samples were collected to determine the presence of anti-depemokimab binding antibodies using a validated bioanalytical method. Data is reported by visit. Titer was only measured when a positive result was found.
Measured: Up to Week 26

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

10 Dec 202123 Dec 2022

First posted1 Dec 2021
Study start10 Dec 2021
Primary completion23 Dec 2022
Study completion23 Dec 2022

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.
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 1
Primary purpose: Treatment
Allocation: Non-randomised
Intervention model: Sequential
Masking: None (open label)
Enrolment: 20 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT05140200
Sponsor's protocol ID: 208021
Status last verified: May 2026
First submitted: 22 Nov 2021
Last updated: 26 May 2026
Results posted: Yes, on ClinicalTrials.gov
Data monitoring committee: No
FDA-regulated drug: No
FDA-regulated device: No
Individual data sharing: Yes: Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://d3l8i7lo48obsd.cloudfront.net/gsk-patient-level-data-sharing-july2025-1-Bgwa1UthxvluYbWYTThw.pdf

Want to know more?

The sponsor has not listed a contact. The official record may have more details.

Talk to your doctor first and take this page with you. Only the study team can confirm whether you can join.

Questions to ask the study team

What is the study trying to find out?
What would I need to do, and how often would I visit?
Could I receive a placebo instead of the treatment?
What are the possible risks and benefits for me?
Will it cost me anything? Are travel or time paid for?
Can I keep seeing my own doctor during the study?
What happens when the study ends?

See locations

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Study at a glance

From the registry record, last updated by the sponsor on 26 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: An Open-label, Single Dose Study to Investigate the Pharmacokinetics, Safety, Tolerability and Immunogenicity of Two Dose Levels of GSK3511294 Administered Subcutaneously in Chinese Healthy Participants
ClinicalTrials.gov ID: NCT05140200
Acronym / sponsor ID: 208021
Conditions: Asthma
Keywords: Single dose study, Immunogenicity, GSK3511294, Chinese healthy participants
Phase: Phase 1
Study type: Interventional
Recruitment status: Completed
Enrolment: 20 participants (actual)
Lead sponsor: GlaxoSmithKlineIndustry (pharma, biotech, devices)
Study start: 10 Dec 2021 (actual)
Primary completion: 23 Dec 2022 (actual)
Study completion: 23 Dec 2022 (actual)
First posted: 1 Dec 2021 (actual)
Results: Posted 26 May 2026

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Study design

Primary purpose: Treatment
Allocation: Non-randomised
Intervention model: Sequential
Masking: None (open label)
Number of arms: 2

Arm	Type	Receives
Depemokimab 100mg	Experimental	Biological: DepemokimabHealthy Chinese participants received a single dose of 100 mg Depemokimab subcutaneously on Day 1.
Depemokimab 300mg	Experimental	Biological: DepemokimabHealthy Chinese participants received a single dose of 300 mg Depemokimab subcutaneously on Day 1.

Who may qualify

Ages: 18 to 45 years
Sex: All
Healthy volunteers: Accepted
Age groups: Adult

Key inclusion criteria (5 listed)

Participant between 18 to 45 years of age.
Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, electrocardiograms and vital signs.
Body weight greater than or equal to (>=)50.0 kilograms (kg) for males, >=45.0 kg for females, and body mass index (BMI) within the range (19.0-26.0) kg/meter square (m^2) (inclusive).
Contraceptive use by men and/or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
Capable of giving signed informed consent.

Key exclusion criteria (8 listed)

Participant is pregnant, breastfeeding, or a woman of childbearing potential
History or presence of cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, or neurological disorders capable of significantly altering the absorption, metabolism, or elimination of drugs
Participants with allergy/intolerance to a monoclonal antibody or biologic or participants with a previous history of clinically significant multiple or severe allergic reactions/intolerance
Current evidence or recent history of an infective illness
A positive pre-study drug/alcohol screen or a history (or suspected history) of alcohol misuse or substance abuse

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
DepemokimabAlso: GSK3511294Depemokimab was administered.	Biological	Depemokimab 100mg, Depemokimab 300mg

Primary outcome

Area Under the Plasma Concentration-Time Curve (AUC) From Time Zero (Pre-Dose) Extrapolated to Infinite Time (AUC[0-Infinity]) of Depemokimab
Time frame: Day 1 (Pre-dose, 2h, and 8h Post-dose), Day 2, Day 3, Day 5, Day 8, Day 15, Day 29, Day 57, Day 85, Day 127, Day 169, and Day 183
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Infinity). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
AUC From Time 0 (Pre-Dose) to Last Time of Quantifiable Concentration Within a Participant Across All Treatments (AUC[0-T]) of Depemokimab
Time frame: Day 1 (Pre-dose, 2h, and 8h Post-dose), Day 2, Day 3, Day 5, Day 8, Day 15, Day 29, Day 57, Day 85, Day 127, Day 169, and Day 183
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-T). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
AUC From Time 0 (Pre-dose) to Week 4 (AUC[0-Week 4]) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, and 29
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Week 4). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 4 post-dose correlates to Day 1 plus 28 days, that is, Day 29.
AUC From Time 0 (Pre-dose) To Week 12 (AUC[0-Week 12]) Of Depemokimab
Time frame: Pre-dose (Day 1); 2 h, 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, and 85
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Week 12). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 12 post-dose correlates to Day 1 plus 84 days, that is, Day 85.
AUC From Time 0 (Pre-dose) To Week 26 [AUC(0-Week 26)] of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for AUC(0-Week 26). Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Percentage Of AUC(0-Infinity) Obtained by Extrapolation (%AUCex) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for percentage of AUC(0-Infinity) obtained by extrapolation. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Maximum Observed Plasma Concentration (Cmax) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for Cmax. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Time of Occurrence of Cmax (Tmax) Of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for Tmax. Pharmacokinetic parameters were calculated by standard non compartmental analysis. Tmax was determined directly from the plasma concentration-time data. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Time To Last Quantifiable Concentration (Tlast) of Depemokimab
Time frame: Pre-dose (day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for Tlast. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Apparent Clearance (CL/F) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for Apparent Clearance. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Apparent Volume of Distribution (Vz/F) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for apparent volume of distribution. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Terminal Elimination Rate Constant (Lambda Z) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for Terminal elimination rate constant. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.
Terminal Phase Half-Life (T1/2) of Depemokimab
Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, 85, 127, 169, and 183
Blood samples were collected from participants at indicated time points and analyzed for Terminal phase half-life. Pharmacokinetic parameters were calculated by standard non compartmental analysis. As the first dose of depemokimab was administered on Day 1, Week 26 post-dose correlates to Day 1 plus 182 days, that is, Day 183.

20 secondary outcomes

Number of Participants With Adverse Events (AE) And Serious Adverse Events (SAEs)
Time frame: From the start of the study intervention (Day 1) up to Day 211 (End of follow-up)
Change From Baseline in Hematology Parameter: Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelets, and Leukocytes
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and Week 26
Change From Baseline in Hematology Parameter: Hemoglobin
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Hematocrit
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Mean Corpuscular Volume (MCV)
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Mean Corpuscular Hemoglobin (MCH)
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Hematology Parameter: Reticulocytes
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and Week 26
Change From Baseline In Hematology Parameter: Erythrocytes
Time frame: Baseline (Day -1), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and Week 26
Change From Baseline in Clinical Chemistry Parameters: Sodium, Potassium, Calcium, Glucose And Urea
Time frame: Baseline (Pre-dose on Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline in Clinical Chemistry Parameter: Direct Bilirubin, Bilirubin, and Creatinine
Time frame: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline in Clinical Chemistry Parameters: Alkaline Phosphate (ALP), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), and Gamma Glutamyl Transferase (GGT)
Time frame: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline In Clinical Chemistry Parameter of Albumin and Total Protein
Time frame: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Absolute Values of Complement C3 And C4 at Each Timepoint
Time frame: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Ratio to Baseline at Each Timepoint of Complement C3 And C4
Time frame: Baseline (Day -1), Week 1, 4, 8, 12, 24 and Week 26
Change From Baseline in Systolic and Diastolic Blood Pressure
Time frame: Baseline (Day -1), Day 1 (2 hours), Day 1 (8 hours), Days 2, 3, 5, Weeks 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Body Temperature
Time frame: Baseline (Day -1), Day 1 (2 hours), Day 1 (8 hours), Day 2, 3, 5, Week 1, 2, 4, 8, 12, 18, 24 and 26
Change From Baseline in Pulse Rate
Time frame: Baseline (Day -1), Day 1 (2 hour), Day 1 (8 hour), Day 2, 3, 5, Week 1, 4, 8, 12, 18, 24 and Week 26
Change From Baseline in ECG Parameters: PR Interval, Aggregate, QRS Duration, Aggregate, QT Interval, Aggregate, QTcF Interval, Aggregate
Time frame: Baseline (Day -1), Day 1 (2 hour), Day 1 (8 hour), Day 2, 3, 5, Week 1, 4, 8, 12, 18, 24 and Week 26
Number of Participants With Positive Anti-drug Antibodies (ADAs) Against Depemokimab
Time frame: Day 1 (Pre-dose), Week 4, Week 12, and Week 26
Titres of Binding ADA's to Depemokimab
Time frame: Up to Week 26

Results and safety

Results posted to the registry on 26 May 2026, as reported by the sponsor. Figures are copied from the record, not re-analysed. Full results on ClinicalTrials.gov.

Participant flow

Group	Started	Completed
Depemokimab 100mg	10	10
Depemokimab 300mg	10	9

Primary outcome: Area Under the Plasma Concentration-Time Curve (AUC) From Time Zero (Pre-Dose) Extrapolated to Infinite Time (AUC[0-Infinity]) of Depemokimab

Time frame: Day 1 (Pre-dose, 2h, and 8h Post-dose), Day 2, Day 3, Day 5, Day 8, Day 15, Day 29, Day 57, Day 85, Day 127, Day 169, and Day 183. Geometric mean (95% Confidence Interval). Unit: day*micrograms per millilitres

Measure	Depemokimab 100mg n = 10	Depemokimab 300mg n = 9
Value	1685.946 (1540.9579 to 1844.5771)	5224.107 (4713.2900 to 5790.2848)

Population analysed: The analysis was performed on pharmacokinetic set which included all participants who received at least one dose of study intervention and for whom at least one evaluable pharmacokinetic sample was obtained and analysed. Participants were analyzed according to the intervention they actually received. Only those participants with data available at the specified time points were analyzed.

Primary outcome: AUC From Time 0 (Pre-Dose) to Last Time of Quantifiable Concentration Within a Participant Across All Treatments (AUC[0-T]) of Depemokimab

Measure	Depemokimab 100mg n = 10	Depemokimab 300mg n = 9
Value	1472.963 (1346.2052 to 1611.6562)	4604.879 (4133.2379 to 5130.3394)

Primary outcome: AUC From Time 0 (Pre-dose) to Week 4 (AUC[0-Week 4]) of Depemokimab

Time frame: Pre-dose (Day 1); 2 hours (h), 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, and 29. Geometric mean (95% Confidence Interval). Unit: day*micrograms per millilitres

Measure	Depemokimab 100mg n = 10	Depemokimab 300mg n = 10
Value	414.467 (367.9103 to 466.9157)	1357.843 (1207.8494 to 1526.4621)

Primary outcome: AUC From Time 0 (Pre-dose) To Week 12 (AUC[0-Week 12]) Of Depemokimab

Time frame: Pre-dose (Day 1); 2 h, 8 h, 24 h, and 48 h post-dose; Days 5, 8, 15, 29, 57, and 85. Geometric mean (95% Confidence Interval). Unit: day*micrograms per millilitres

Measure	Depemokimab 100mg n = 10	Depemokimab 300mg n = 9
Value	1027.083 (933.7879 to 1129.6990)	3255.132 (2902.9404 to 3650.0522)

20 secondary outcomes are reported in the full results.

Adverse events

Time frame: All-cause mortality, Serious Adverse events (SAE) and non-SAEs were collected from the start of the study intervention (Day 1) up to Day 211 (End of follow-up).. Other adverse events reported at 5% frequency or more

Group	Serious adverse events	Other adverse events	Deaths
Depemokimab 100mg	0 of 10 (0%)	10 of 10 (100%)	0 of 10
Depemokimab 300mg	0 of 10 (0%)	10 of 10 (100%)	0 of 10

Loading the posted results from ClinicalTrials.gov…

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 26 May 2026.
Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Individual participant dataSharing planned: Yes. Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://d3l8i7lo48obsd.cloudfront.net/gsk-patient-level-data-sharing-july2025-1-Bgwa1UthxvluYbWYTThw.pdf

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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

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Depemokimab in people with Asthma, run by GlaxoSmithKline at 1 site in China.

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 5 inclusion and 8 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 26 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. 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. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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 26 May 2026). 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?

Area Under the Plasma Concentration-Time Curve (AUC) From Time Zero (Pre-Dose) Extrapolated to Infinite Time (AUC[0-Infinity]) of Depemokimab (time frame: Day 1 (Pre-dose, 2h, and 8h Post-dose), Day 2, Day 3, Day 5, Day 8, Day 15, Day 29, Day 57, Day 85, Day 127, Day 169, and Day 183). The study lists 13 primary outcomes in all. 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 NCT05140200.

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 26 May 2026.