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Tilrekimig

Phase 3

Asthma | Small molecule | Respiratory |Pfizer, Inc.|Trials Updated: Oct 15, 2026

Tilrekimig development status

Highest phase Phase 3
Registered trials 9 across 1 sponsor since Jun 2022

Tilrekimig target and mechanism

ModalitySmall molecule

Also known as PF-07275315

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials8
Total Enrollment7,058

FDA Designations

No designations recorded

Tilrekimig clinical trials

Tilrekimig · 8 trials · 3 indications

Phase 3 5Phase 2 3
NCT07869043A Study to Learn About the Study Medicine Called Tilrekimig ( PF-07275315) in People With Severe AsthmaAsthma
RECRUITING1,100 Analytics
NCT07839884A Continuation Study of Tilrekimig in Adults With Moderate-to-Severe Long-Term Breathing Difficulty, Known by the Medical Term of Chronic Obstructive Pulmonary Disease (COPD) to Learn About This Medicine When Used for a Long Period of TimeModerate to Severe Chronic Obstructive Pulmonary Disease
NOT YET_RECRUITING1,360 Analytics
NCT07783425A Study to Learn About the Study Medicine Called Tilrekimig in People With Moderate-to Severe EczemaAtopic Dermatitis
RECRUITING1,375 Analytics
NCT07772921A Study to Learn About the Study Medicine Called Tilrekimig in People With Severe AsthmaAsthma
RECRUITING1,100 Analytics
NCT07765888A Study to Learn About the Study Medicine Called Tilrekimig in People With Moderate-to-Severe EczemaAtopic Dermatitis
RECRUITING375 Analytics
PHASE3RECRUITING
A Study to Learn About the Study Medicine Called Tilrekimig ( PF-07275315) in People With Severe Asthma
AsthmaUnlock trial analytics
PHASE3NOT YET_RECRUITING
A Continuation Study of Tilrekimig in Adults With Moderate-to-Severe Long-Term Breathing Difficulty, Known by the Medical Term of Chronic Obstructive Pulmonary Disease (COPD) to Learn About This Medicine When Used for a Long Period of Time
Moderate to Severe Chronic Obstructive Pulmonary DiseaseUnlock trial analytics
PHASE3RECRUITING
A Study to Learn About the Study Medicine Called Tilrekimig in People With Moderate-to Severe Eczema
Atopic DermatitisUnlock trial analytics
PHASE3RECRUITING
A Study to Learn About the Study Medicine Called Tilrekimig in People With Severe Asthma
AsthmaUnlock trial analytics
PHASE3RECRUITING
A Study to Learn About the Study Medicine Called Tilrekimig in People With Moderate-to-Severe Eczema
Atopic DermatitisUnlock trial analytics

Study Endpoints

Primary Endpoints

Annualized asthma exacerbation rate over 52 weeks
Baseline through Week 52

Protocol defined asthma exacerbations require treatment with systemic steroids (oral or parenteral) for 3 consecutive days or more; an emergency room or urgent care visit (\<24 hours) that is due to asthma and requires use of systemic corticosteroids as noted above; or an in-patient hospitalization (an admission to an in-patient hospital or evaluation and treatment in a healthcare facility for ≥24 hours) due to asthma.

Number of Participants With Treatment-Emergent Adverse Events During Treatment Period 1 (TP1)
Up to 60 weeks

Number and percentage of participants with treatment-emergent adverse events. An adverse event is considered treatment-emergent if it begins or increases in severity following initiation of study intervention. Events will be summarized by severity and other protocol-defined characteristics

Number of Participants With Treatment-Emergent Serious Adverse Events During Treatment Period 1
Up to 60 weeks

Number and percentage of participants with treatment-emergent serious adverse events. Serious adverse events are events that meet one or more of the protocol-defined seriousness criteria.

Number of Participants With Treatment-Emergent Adverse Events Leading to Permanent Discontinuation of Study Intervention During Treatment Period 1
Up to 60 weeks

Number and percentage of participants with treatment-emergent adverse events that lead to permanent discontinuation of tilrekimig.

Number of Participants With Clinically Significant Laboratory Abnormalities During Treatment Period 1
Up to 60 weeks

Number and percentage of participants with protocol-defined clinical abnormalities in laboratory values and vitals signs. Laboratory assessments include protocol-required hematology and blood chemistry evaluations. Abnormal laboratory findings will be evaluated according to protocol-defined criteria and investigator assessment of clinical significance. Vital-sign assessments include blood pressure, pulse rate, respiratory rate, temperature, and oxygen saturation measured by pulse oximetry.

Difference in the proportion of Eczema Area and Severity Index (EASI)75 responders between tilrekimig versus placebo.
Week 16
Difference in the proportion of validated Investigator Global Assessment- Atopic Dermatitis (vIGA-AD) 0/1 responders between tilrekimig versus placebo.
Week 16
Difference in the proportion of Eczema and Severity Index (EASI)75 responders between tilrekimig versus placebo
Week 16
Difference in the proportion of Validated Investigator Global Assessment (vIGA)-AD™ 0/1 responders between tilrekimig versus placebo
Week 16
Phase 2 part: Change from baseline in pre-bronchodilator Forced Expiratory Volume in 1 Second (FEV1) at Week 24
Baseline to Week 24

FEV1 is the maximal volume of air exhaled in the first second of a forced expiration from a position of full inspiration. FEV1 is obtained from spirometry.

Phase 3 part: Annualized rate of moderate or severe ECOPD
Baseline to Week 52

Exacerbation of Chronic Obstructive Pulmonary Disease (ECOPD) are sudden worsening of respiratory symptoms that significantly worsen lung function and quality of life.

Change from baseline in pre-bronchodilator Forced Expiratory Volume in 1 Second (FEV1) at Week 12
Week 12

FEV1 is the maximal volume of air exhaled in the first second of a forced expiration from a position of full inspiration. FEV1 is obtained from spirometry.

Treatment-Emergent Adverse Events (AEs), Serious AEs (SAEs), and AEs/SAEs leading to treatment discontinuation
Baseline through Week 24

Incidence of treatment-emergent AEs, treatment-emergent SAEs, and treatment-emergent AEs/SAEs leading to treatment discontinuation

Clinically significant, treatment-related laboratory abnormalities
Baseline through Week 24

Incidence of clinically significant changes in laboratory tests

Clinically significant, treatment-related abnormalities in vital signs
Baseline through Week 24

Incidence of clinically significant changes in vital signs

Clinically significant, treatment-related electrocardiogram (ECG) abnormalities
Baseline through Week 24

Incidence of clinically significant changes in ECG

The number of participants achieving ≥75% improvement in EAS175 from baseline at week16.
Week 16

EASI75 (≥75% improvement from baseline) at Week 16

Secondary Endpoints

Annualized asthma exacerbation rate over 52 weeks in participants with severe asthma and with eosinophil counts ≥300 cells/µL (ie, high eosinophil subgroup)
Baseline through Week 52
Annualized asthma exacerbation rate over 52 weeks in participants with severe asthma and with eosinophil counts <300 cells/µL (ie, medium-to-low eosinophil subgroup)
Baseline through Week 52
Change from baseline (CFB) in pre-bronchodilator forced expiratory volume in 1 second (FEV1) at Week 52
Baseline through Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Treatment Arm A TilrekimigEXPERIMENTALTilrekimig
Treatment Arm B PlaceboPLACEBO_COMPARATORPlacebo
Tilrekimig (PF-07275315)EXPERIMENTALTilrekimig (PF-07275315) subcutaneous injection (sc)
Tilrekimig - Initial treatment periodEXPERIMENTALSubcutaneous injections given over 20 Weeks.
Placebo - Initial treatment periodPLACEBO_COMPARATORSubcutaneous injections given over 22 Weeks.
Tilrekimig - Maintenance Period - Dose BEXPERIMENTALSubcutaneous injections given at Week 24 through Week 48.
Tilrekimig - Maintenance Period - Dose AEXPERIMENTALSubcutaneous injections given at Week 24 through Week 48.
Dupilumab - Initial treatment periodACTIVE_COMPARATORSubcutaneous injections given over 22 Weeks.
Placebo - Maintenance PeriodPLACEBO_COMPARATORSubcutaneous injections given at Week 24 through Week 48.
TilrekimigEXPERIMENTALSubcutaneous injections given over 20 weeks
PlaceboPLACEBO_COMPARATORSubcutaneous injections given over 20 weeks
Phase 3 Treatment Arm AEXPERIMENTAL -
Phase 2 Treatment Arm BEXPERIMENTAL -
Phase 2 Treatment Arm AEXPERIMENTAL -
Phase 3 Treatment Arm BPLACEBO_COMPARATOR -
Phase 2 Treatment Arm CPLACEBO_COMPARATOR -
Treatment Arm AEXPERIMENTALPF-07275315
Treatment Arm BEXPERIMENTALPF-07275315
Treatment Arm CEXPERIMENTALPF-07275315
Treatment Arm DPLACEBO_COMPARATORPlacebo
Stage 1_PF-07275315EXPERIMENTALStage 1 PF-07275315 Injections over 12 weeks
Stage 1_PF-07264660EXPERIMENTALStage 1 PF-07264660 Injections over 12 weeks
Stage 1_PlaceboEXPERIMENTALStage 1 Placebo Injections over 12 weeks
Stage 2_PF-07275315 _Dose AEXPERIMENTALStage 2 PF-07275315 Injections over 12 weeks.
Stage 2_PF-07275315 _Dose BEXPERIMENTALStage 2 PF-07275315 Injections over 12 weeks.
Stage 2_PF-07275315 _Dose CEXPERIMENTALStage 2 PF-07275315 Injections over 12 weeks.
Stage 2_PF-07275315 _Dose DEXPERIMENTALStage 2 PF-07275315 or PF-07264660 Injections over 12 weeks.
Stage 2_PlaceboEXPERIMENTALStage 2 Placebo Injections over 12 weeks.
Stage 3_Placebo+PF-07275315_Dose AEXPERIMENTALStage 3 Placebo Injections for 16 weeks followed by PF-07275315 Injections for 16 weeks.
Stage 3_PF-07275315_Dose BEXPERIMENTALStage 3 PF-07275315 Injections for 32 weeks.
Stage 4_PF-07264660_Dose AEXPERIMENTALStage 4 PF-07264660 Injections for 12 weeks
Stage 4_PF-07264660_Dose BEXPERIMENTALStage 4 PF-07264660 Injections for 12 weeks
Stage 4_PF-07264660_Dose CEXPERIMENTALStage 4 PF-07264660 Injections for 12 weeks
Stage 4_PlaceboEXPERIMENTALStage 2 Placebo Injections for 12 weeks

Interventions

NameTypeDescription
tilrekimigDRUGsubcutaneous injection
PlaceboOTHERsubcutaneous injection
DupilumabDRUGSubcutaneous Injections at required timepoints based on weight and age.
Placebo for TilrekimigOTHERSubcutaneous Injections at required timepoints
Placebo for DupilumabOTHERSubcutaneous Injections at required timepoints during initial treatment period.
PF-07275315 dose 1DRUGSC injection dose 1
PF-07275315-dose 2DRUGSC injection dose 2
PF-07275315-dose 3DRUGSC injection dose 3
PF-07275315DRUGsubcutaneous injection
PF-07264660DRUGsubcutaneous injection
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Eligibility Criteria

Age Range12 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria Must meet the following asthma criteria: 1. History of persistent, severe asthma for at least 12 months prior to screening as defined by recognized international and / or local guidelines. 2. Must have experienced at least 2 asthma exacerbations requiring treatment with systemic...

Countries:United StatesJapanArgentinaCanadaChinaCzechiaHungaryIndiaSouth KoreaTaiwanBelgiumBulgariaItalyPolandSouth AfricaSpainUnited KingdomAustraliaGermany
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Recent Changes (Last 90 Days)

LOWOct 15, 2026NCT07765888lastUpdatePostDate: changed
LOWOct 15, 2026NCT07765888lastUpdatePostDate: changed
LOWOct 13, 2026NCT06977581lastUpdatePostDate: changed
LOWOct 13, 2026NCT06977581lastUpdatePostDate: changed
LOWOct 9, 2026NCT07869043NEW_TRIAL: changed
LOWOct 9, 2026NCT07869043NEW_TRIAL: changed
LOWOct 6, 2026NCT07772921Status: NOT_YET_RECRUITING → RECRUITING
LOWOct 6, 2026NCT07783425Status: NOT_YET_RECRUITING → RECRUITING
LOWOct 6, 2026NCT07772921Status: NOT_YET_RECRUITING → RECRUITING
LOWOct 6, 2026NCT07783425Status: NOT_YET_RECRUITING → RECRUITING
LOWOct 5, 2026NCT06977581lastUpdatePostDate: changed
LOWOct 5, 2026NCT06977581lastUpdatePostDate: changed
LOWSep 24, 2026NCT07839884NEW_TRIAL: changed
LOWSep 24, 2026NCT07839884NEW_TRIAL: changed
LOWSep 22, 2026NCT06977581lastUpdatePostDate: changed
LOWSep 22, 2026NCT06977581lastUpdatePostDate: changed
MEDIUMSep 4, 2026NCT07765888Status: NOT_YET_RECRUITING → RECRUITING
MEDIUMSep 4, 2026NCT07765888Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 31, 2026NCT07363694lastUpdatePostDate: changed
LOWAug 31, 2026NCT07363694lastUpdatePostDate: changed

Frequently asked questions about Tilrekimig

What is Tilrekimig?

Tilrekimig is an investigational medicine being developed by Pfizer for respiratory and inflammatory conditions. It is in Phase 3 clinical development for severe asthma, atopic dermatitis, and moderate to severe chronic obstructive pulmonary disease. Tilrekimig has not been approved by the FDA and remains under clinical study.

What is Tilrekimig used for?

Tilrekimig is being studied for severe asthma, atopic dermatitis, and moderate to severe chronic obstructive pulmonary disease. These are the indications under investigation in Phase 3 trials. Tilrekimig is investigational and has not been approved for any use.

Who makes Tilrekimig?

Tilrekimig is developed by Pfizer, Inc., which trades on the New York Stock Exchange under the ticker PFE. Pfizer is running the Phase 3 clinical program evaluating Tilrekimig across asthma, atopic dermatitis, and chronic obstructive pulmonary disease.

What phase is Tilrekimig in?

Tilrekimig is in Phase 3 clinical development. Pfizer is running four Phase 3 trials across severe asthma, atopic dermatitis, and moderate to severe chronic obstructive pulmonary disease. Tilrekimig is investigational and has not received FDA approval.

What clinical trials is Tilrekimig in?

Tilrekimig is being evaluated in four Phase 3 trials. NCT07869043 and NCT07772921 study severe asthma, NCT07783425 studies atopic dermatitis, and NCT07839884 is a continuation study in moderate to severe chronic obstructive pulmonary disease. All are randomized, double-blind, and placebo-controlled.