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Experimental: Tezepelumab

Phase 3

Asthma | Monoclonal antibody | Respiratory |AstraZeneca PLC|Last Updated: Jan 27, 2026

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment1,466

FDA Designations

No designations recorded

Clinical trial landscape

Experimental: Tezepelumab · 4 trials · 3 indications

Phase 3 3Phase 1 1
NCT04851964Efficacy and Safety of Tezepelumab in Participants With Severe Chronic Rhinosinusitis With Nasal PolyposisChronic Rhinosinusitis With Nasal Polyps
COMPLETED416 Analytics
NCT03927157Study to Evaluate Tezepelumab in Adults With Severe Uncontrolled AsthmaAsthma
COMPLETED405 Analytics
NCT03347279Study to Evaluate Tezepelumab in Adults & Adolescents With Severe Uncontrolled AsthmaAsthma
COMPLETED1,061 Analytics
PHASE3COMPLETED
Efficacy and Safety of Tezepelumab in Participants With Severe Chronic Rhinosinusitis With Nasal Polyposis
Chronic Rhinosinusitis With Nasal PolypsUnlock trial analytics
PHASE3COMPLETED
Study to Evaluate Tezepelumab in Adults With Severe Uncontrolled Asthma
AsthmaUnlock trial analytics
PHASE3COMPLETED
Study to Evaluate Tezepelumab in Adults & Adolescents With Severe Uncontrolled Asthma
AsthmaUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in Total Nasal Polyp Score at Week 52
Baseline to Week 52

The total nasal polyp score (NPS) is the sum of the right and left nostril scores (maximum of 8), as evaluated by nasal endoscopy. Higher scores indicate greater symptom severity. The left and right score will be based on a central read with a scale from 0 to 4. Each nasal endoscopy is evaluated by two independent physician reviewers.

Change From Baseline in Bi-weekly Mean Nasal Congestion Score (NCS) at Week 52
Baseline to Week 52

The NCS is captured by one item in the NPSD (nasal polyps symptom diary) asking participants to rate the severity of their worst NC over the past 24 hours using the following response options: 0 - None; 1 - Mild; 2 - Moderate; 3 - Severe. Baseline will be the mean of daily responses from Day -13 to Day 0. Bi-weekly (14-day) mean NCS will be calculated if at least 8 days in each 14-day period has evaluable data; otherwise the bi-weekly mean is set to missing.

Annual Asthma Exacerbation Rate (AERR)
Randomization to Week 52

The annual exacerbation rate is based on exacerbations reported by the investigator in the eCRF over 52 weeks

Annual Asthma Exacerbation Rate in Adult and Adolescent Patients With Uncontrolled Asthma
From randomisation to Study Week 52.

The annual exacerbation rate is based on unadjudicated exacerbations reported by the investigator in the eCRF. The analysis is based on the primary population (Full Analysis Set)

Annual Asthma Exacerbation Rate in Adult and Adolescent Patients With Uncontrolled Asthma in Subjects With Baseline Eosinophils < 300 Cells/uL
From randomisation to Study Week 52.

The annual exacerbation rate is based on unadjudicated exacerbations reported by the investigator in the eCRF. This analysis is based on subjects with baseline eosinophils \< 300 cells/uL

AUC0-inf (Area under the serum concentration versus time curve from time zero to Infinity)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

AUC0-t (Area under the serum concentration versus time curve from time zero to the last quantifiable concentration)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

Cmax (Maximum serum concentration)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

tmax (time to Cmax)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

t1/2 (terminal serum half-life)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

CL/F (apparent serum clearance)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

Vz/F (apparent volume of distribution)
Blood samples will be collected from Day 1 (3 hour prior to administration of IP) and on Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 15, Day 22, Day 29, Day 43, Day 57, Day 85 and Day 113.

To investigate the pharmacokinetics of single subcutaneous dose of tezepelumab in healthy Chinese subjects

Secondary Endpoints

Change From Baseline in Bi-weekly Mean Loss of Smell at Week 52
Baseline to Week 52
Change From Baseline in SinoNasal Outcome Test 22 (SNOT-22) at Week 52
Baseline to Week 52
Change From Baseline in Lund Mackay Score Evaluated by CT at Week 52.
Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
TezepelumabEXPERIMENTALTezepelumab subcutaneous injection in an accessorized pre-filled syringe every 4 weeks (Q4W) added to background mometasone furoate (MFNS) or equivalent intranasal corticosteroid (INCS).
PlaceboPLACEBO_COMPARATORPlacebo subcutaneous injection in an accessorized pre-filled syringe Q4W added to background MFNS or equivalent INCS.
Tezepelumab: Low doseEXPERIMENTALTezepelumab: Tezepelumab single dose subcutaneously injection.
Tezepelumab: Medium doseEXPERIMENTALTezepelumab: Tezepelumab single dose subcutaneously injection.
Tezepelumab: High doseEXPERIMENTALTezepelumab: Tezepelumab single dose subcutaneously injection.

Interventions

NameTypeDescription
Experimental: TezepelumabBIOLOGICALTezepelumab subcutaneous injection
PlaceboOTHERPlacebo subcutaneous injection
Mometasone furoate or equivalent intranasal corticosteroidDRUGBackground MFNS or equivalent INCS at stable dose
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites112

Inclusion Criteria: 1. Participants with physician-diagnosed CRSwNP for at least 12 months prior to Visit 1 that have: 1. Severity consistent with need for surgery as defined by total NPS ≥ 5 (≥ 2 for each nostril) at screening, as determined by the central reader 2. Nasal Congestion Score (...

Countries:United StatesCanadaChinaDenmarkGermanyHungaryJapanPolandSpainUnited KingdomPhilippinesSouth KoreaArgentinaAustraliaAustriaBrazilFranceIsraelRussiaSaudi ArabiaSouth AfricaTaiwanUkraineVietnam
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Frequently asked questions about Experimental: Tezepelumab

What is Tezepelumab used for?

Tezepelumab is an investigational monoclonal antibody being studied for severe uncontrolled asthma and chronic rhinosinusitis with nasal polyps. It has been evaluated in Phase 3 clinical trials for these conditions, as well as in a Phase 1 study in healthy subjects. It is not yet approved and remains in clinical development.

Who makes Tezepelumab?

Tezepelumab is being developed by AstraZeneca PLC, a biopharmaceutical company traded on the NASDAQ under the ticker symbol AZN. The company has sponsored multiple clinical trials evaluating the drug for respiratory conditions including severe asthma and chronic rhinosinusitis with nasal polyps.

What phase is Tezepelumab in?

Tezepelumab has completed Phase 3 clinical trials for severe uncontrolled asthma and chronic rhinosinusitis with nasal polyps, as well as a Phase 1 study in healthy subjects. All trials listed are completed, and the drug remains investigational, meaning it has not received regulatory approval.

What clinical trials is Tezepelumab in?

Tezepelumab has been studied in several completed trials, including NCT03347279 and NCT03927157 for severe uncontrolled asthma, NCT04851964 for chronic rhinosinusitis with nasal polyps, and NCT04362410, a Phase 1 pharmacokinetic study in healthy Chinese subjects. These trials enrolled a total of 1,466 participants.

Is Tezepelumab the same as other asthma biologics?

Tezepelumab is a distinct monoclonal antibody targeting a different pathway than other asthma biologics. It is being developed by AstraZeneca for severe uncontrolled asthma and nasal polyps. No alternative names for Tezepelumab have been disclosed in the available clinical trial information.