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GB-0895

Phase 3

Severe Asthma | Small molecule | Respiratory |Generate Biomedicines, Inc.|Trials Updated: Oct 22, 2026

GB-0895 development status

Highest phase Phase 3
Registered trials 2 across 1 sponsor since Dec 2025

GB-0895 target and mechanism

Molecular targetTSLP
Target classProtein
ModalitySmall molecule

Also known as GB-0895 (SC)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment1,728

FDA Designations

No designations recorded

GB-0895 clinical trials

GB-0895 · 3 trials · 3 indications

Phase 3 2Phase 1 1
NCT07359846A Study to Investigate GB-0895 Adjunctive Therapy in Adults and Adolescents With Severe Uncontrolled Asthma (SOLAIRIA-2)Severe Asthma
RECRUITING786 Analytics
NCT07276724A Study to Investigate GB-0895 Adjunctive Therapy in Adults and Adolescents With Severe Uncontrolled Asthma (SOLAIRIA-1)Severe Asthma
RECRUITING786 Analytics
PHASE3RECRUITING
A Study to Investigate GB-0895 Adjunctive Therapy in Adults and Adolescents With Severe Uncontrolled Asthma (SOLAIRIA-2)
Severe AsthmaUnlock trial analytics
PHASE3RECRUITING
A Study to Investigate GB-0895 Adjunctive Therapy in Adults and Adolescents With Severe Uncontrolled Asthma (SOLAIRIA-1)
Severe AsthmaUnlock trial analytics

Study Endpoints

Primary Endpoints

To evaluate the annualized asthma exacerbation rate (AAER) in adult and adolescent subjects with severe uncontrolled asthma.
From Day 1 (randomization) to Week 52

The annual exacerbation rate is based on clinically significant (CS) exacerbations reported by the investigator in the electronic case (eCRF) over 52 weeks for subjects on GB-0895 as compared to placebo.

Number of participants with treatment related adverse events as assessed by CTCAE 5.0
Day 1 to Day 500

Secondary Endpoints

To evaluate the annualized asthma exacerbation rate (AAER) in adult and adolescent subjects with severe uncontrolled asthma and baseline eosinophils (EOS) < 300 cells/µL.
From Day 1 (randomization) to Week 52
Change from baseline in pre-bronchodilator (BD) forced expiratory volume in 1 second (FEV1)
From Day 1 (randomization) to Study Week 52
Change from baseline in Asthma Quality of Life Questionnaire AQLQ(S)12+ score
From Day 1 (randomization) to Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
GB-0895EXPERIMENTALGB-0895 Subcutaneous (SC) injection
PlaceboPLACEBO_COMPARATORPlacebo Subcutaneous (SC) injection
Part A: Single Ascending Dose (SAD) (asthma participants)EXPERIMENTALrandomized 3:1 active:placebo
Part B: Multiple Ascending Dose (MAD) (asthma participants)EXPERIMENTALrandomized 3:1 active:placebo
Part C: Single Dose (COPD participants)EXPERIMENTALrandomized 3:1 active:placebo

Interventions

NameTypeDescription
GB-0895DRUGStudy Drug
PlaceboDRUGPlacebo
GB-0895 (SC)BIOLOGICALSingle subcutaneous dose of GB-0895
Placebo (SC)DRUGSingle subcutaneous dose of placebo
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Eligibility Criteria

Age Range12 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites141

1. Adults and adolescents ≥ 12 and ≤ 80 years of age. 2. Documented diagnosis of asthma for \> 12 months. 3. Subjects must be on medium to high dose ICS for ≥ 12 months before Screening Visit 1 plus at least 1 additional asthma controller (e.g., LABA, LAMA) ≥ 3 months before Screening Visit 1 with n...

Countries:United StatesArgentinaAustraliaBelgiumEstoniaFranceGeorgiaIrelandItalyJapanNew ZealandSerbiaSlovakiaSpainTurkey (Türkiye)UkraineUnited KingdomBrazilBulgariaChileCzechiaGermanyGreeceHungaryIsraelLatviaNetherlandsPhilippinesPortugalRomaniaSingaporeSouth AfricaSouth Korea
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Recent Changes (Last 90 Days)

LOWOct 22, 2026NCT07276724lastUpdatePostDate: changed
LOWOct 22, 2026NCT07276724lastUpdatePostDate: changed
LOWOct 20, 2026NCT07359846lastUpdatePostDate: changed
LOWOct 20, 2026NCT07359846lastUpdatePostDate: changed
LOWOct 7, 2026NCT07276724lastUpdatePostDate: changed
LOWOct 7, 2026NCT07359846lastUpdatePostDate: changed
LOWOct 7, 2026NCT07276724lastUpdatePostDate: changed
LOWOct 7, 2026NCT07359846lastUpdatePostDate: changed
LOWOct 5, 2026NCT07276724lastUpdatePostDate: changed
LOWOct 5, 2026NCT07276724lastUpdatePostDate: changed
LOWSep 22, 2026NCT07359846lastUpdatePostDate: changed
LOWSep 22, 2026NCT07359846lastUpdatePostDate: changed
LOWSep 21, 2026NCT07276724lastUpdatePostDate: changed
LOWSep 21, 2026NCT07276724lastUpdatePostDate: changed
LOWSep 8, 2026NCT07359846lastUpdatePostDate: changed
LOWSep 8, 2026NCT07276724lastUpdatePostDate: changed
LOWSep 8, 2026NCT07359846lastUpdatePostDate: changed
LOWSep 8, 2026NCT07276724lastUpdatePostDate: changed
LOWSep 3, 2026NCT07359846lastUpdatePostDate: changed
LOWSep 3, 2026NCT07276724lastUpdatePostDate: changed

Frequently asked questions about GB-0895

What is GB-0895?

GB-0895 is an investigational monoclonal antibody developed by Generate Biomedicines for respiratory disease. It is being studied as adjunctive therapy in asthma, including severe uncontrolled asthma, and has also been evaluated in adults with mild to moderate asthma or COPD. GB-0895 is administered subcutaneously, which is why it also appears as GB-0895 (SC).

What does GB-0895 target?

GB-0895 targets TSLP, a protein target also known as thymic stromal lymphopoietin. By binding TSLP, the antibody is designed to block an upstream alarm signal in the airway inflammatory cascade. GB-0895 is a monoclonal antibody given subcutaneously and is being developed for asthma indications.

Who is developing GB-0895?

GB-0895 is being developed by Generate Biomedicines, Inc., which trades under the ticker GENB. The company is running the SOLAIRIA Phase 3 program in severe uncontrolled asthma along with an earlier Phase 1 study in mild to moderate asthma or COPD.

What phase is GB-0895 in?

GB-0895 is in Phase 3 clinical development for severe uncontrolled asthma, with two global Phase 3 trials currently recruiting. An earlier Phase 1 study in adults with mild to moderate asthma or COPD is active but no longer recruiting. GB-0895 remains investigational and has not been approved for any indication.

What clinical trials is GB-0895 in?

GB-0895 is being studied in the SOLAIRIA Phase 3 program: NCT07359846 (SOLAIRIA-2) and NCT07276724 (SOLAIRIA-1), each enrolling 786 adults and adolescents with severe uncontrolled asthma across multiple countries. A Phase 1 study, NCT07116889, enrolled 156 adults with mild to moderate asthma or COPD in the United States, Germany, and the United Kingdom.

Is GB-0895 the same as GB-0895 (SC)?

Yes. GB-0895 (SC) refers to the same monoclonal antibody as GB-0895, with SC indicating subcutaneous administration. Both names describe the TSLP-targeting antibody from Generate Biomedicines that is in Phase 3 development for severe uncontrolled asthma.