A Phase 4 interventional study of Depemokimab in Nasal Polyps, sponsored by GlaxoSmithKline. Recruiting at 10 sites in Japan. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-08.
Sponsored by GlaxoSmithKline · Phase 4, Interventional, and Treatment
This study will evaluate the efficacy and safety of depemokimab (GSK3511294) without concomitant use of Intranasal corticosteroids (INCS) in participants with Chronic rhinosinusitis with nasal polyps (CRSwNP).
236 studies on the registry are indexed under Nasal Polyps; 68 are open to participants now.
This study's planned enrollment of 28 is below the median of 60 across 181 interventional studies indexed under Nasal Polyps.
Browse Nasal Polyps studies →GlaxoSmithKline is the lead sponsor of 3,650 studies on the registry; 118 are open to participants now.
Of its 264 completed or terminated interventional studies of FDA-regulated products, 241 (91%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Autoimmune disease
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Excipients
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants will receive depemokimab along with their existing baseline maintenance CRSwNP standard of care (SOC) treatment (excluding INCS).
Biological: Depemokimab
Participants will receive depemokimab.
Also known as: GSK3511294
Percentage of Participants Achieving a One-point or Greater Decrease from Baseline in Total Endoscopic Nasal Polyp (NP) Score Without First Having Nasal Surgery (Actual) or Disease-Modulating Medication for CRSwNP
The total endoscopic NP score will evaluate the size and extent of nasal polyps via endoscopy. The assessments will be performed using centrally reviewed video recordings of nasal endoscopy. The right and left nostrils will be scored from 0 to 4 (0 = No polyps; 1 = Small polyps in the middle meatus not reaching below the inferior border of the middle concha; 2 = Polyps reaching below the lower border of the middle turbinate; 3 = Large polyps reaching the lower border of the inferior turbinate or polyps medial to the middle concha; and 4 = Large polyps causing complete obstruction of the inferior meatus). The scores will be graded based on NP size and will be recorded as the sum of the right and left nostril scores, ranging from 0 (no polyps) to 8 (large polyps), calculated by summing the scores \[0 to 4\] in each nostril, with higher scores indicating worse status.
Time frame: At Week 52
Change from Baseline in Total Endoscopic NP Score
The total endoscopic NP score will evaluate the size and extent of nasal polyps via endoscopy. The assessments will be performed using centrally reviewed video recordings of nasal endoscopy. The right and left nostrils will be scored from 0 to 4 (0 = No polyps; 1 = Small polyps in the middle meatus not reaching below the inferior border of the middle concha; 2 = Polyps reaching below the lower border of the middle turbinate; 3 = Large polyps reaching the lower border of the inferior turbinate or polyps medial to the middle concha; and 4 = Large polyps causing complete obstruction of the inferior meatus). The scores will be graded based on NP size and will be recorded as the sum of the right and left nostril scores, ranging from 0 (no polyps) to 8 (large polyps), calculated by summing the scores \[0 to 4\] in each nostril, with higher scores indicating worse status.
Time frame: Baseline (Day 1) and Week 52
Change from Baseline in Mean Nasal Obstruction Score Using Verbal Response Scale (VRS)
Participants will use a VRS to rate nasal obstruction severity, with scores to be averaged over the specified period to assess treatment impact on nasal obstruction symptoms. Participants will be asked to indicate the severity of nasal obstruction at its worst over the last 24 hours using a 4-point VRS, with options of no symptoms, mild symptoms, moderate symptoms, and severe symptoms. This will be scored on a scale ranging from 0 (no symptoms) to 3 (severe symptoms), with higher scores indicating worse status. The average of daily scores in 4-weekly intervals will be calculated, and data will be presented for Weeks 49-52.
Time frame: Baseline (Day 1) and from Week 49 through to Week 52
Change from Baseline in Mean Symptom Score for Rhinorrhoea (Runny Nose) Using VRS
Participants will be asked to indicate the severity of rhinorrhoea (runny nose) at its worst over the last 24 hours using a 4-point VRS, with options of no symptoms, mild symptoms, moderate symptoms, and severe symptoms. This will be scored on a scale ranging from 0 (no symptoms) to 3 (severe symptoms), with higher scores indicating worse status. The average of daily scores in 4-weekly intervals will be calculated, and data will be presented for Weeks 49-52.
Time frame: Baseline (Day 1) and from Week 49 through to Week 52
Change from Baseline in Mean Symptom Score for Loss of Smell Using VRS
Participants will be asked to indicate the severity of loss of smell at its worst over the last 24 hours using a 4-point VRS, with options of no symptoms, mild symptoms, moderate symptoms, and severe symptoms. This will be scored on a scale ranging from 0 (no symptoms) to 3 (severe symptoms), with higher scores indicating worse status. The average of daily scores in 4-weekly intervals will be calculated, and data will be presented for Weeks 49-52.
Time frame: Baseline (Day 1) and from Week 49 through to Week 52
Change from baseline in Lund Mackay Computerised Tomography (CT) score
The LMK CT scoring system is based on CT imaging of the sinuses, with points to be given for the degree of opacification: 0 = normal, 1 = partial opacification, and 2 = total opacification. These points will be applied to the maxillary, anterior ethmoid, posterior ethmoid, sphenoid, and frontal sinuses on each side (right and left). The osteomeatal complex (OC) will be graded as 0 = not occluded or 2 = occluded. The range for the total LMK CT score will therefore be 0 (normal) to 24 (total opacification) when summed across both sides, with higher scores indicating more severe disease.
Time frame: Baseline (Day 1) and Week 52
Change from Baseline in Sino-nasal Outcome Test (SNOT)-22 Score
The SNOT-22 is a 22-item measure of disease-specific health-related quality of life (HRQoL). Participants will be asked to rate the severity of their condition on each of the 22 items over the previous 2 weeks using a 6-point rating scale of 0-5, including: 0 = Not present/no problem; 1 = Very mild problem; 2 = Mild or slight problem; 3 = Moderate problem; 4 = Severe problem; and 5 = Problem "as bad as it can be." The scores for each question will be summed to derive the total score, with the SNOT-22 total score ranging from 0 (high quality of life) to 110 (worst quality of life), where higher scores will indicate worse quality of life.
Time frame: Baseline (Day 1) and Week 52
Plan to share: 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://www.gsk-studyregister.com/gsk-patient-level-data-sharing-july2025.pdf
Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report
Time frame: Anonymized IPD will be made available within 6 months of publication of primary, key secondary and safety results for studies in product with approved indication(s) or asset(s) with development terminated across all indications.
Access criteria: Anonymized IPD is shared with researchers whose proposals are approved by an Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months, but an extension may be granted, when justified, for up to 6 months.
Data sharing details ↗ · www.gsk-studyregister.com
No publications or documents are linked to this record.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Studies of the drug tested here: Depemokimab