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GB001

Phase 2

Asthma | Small molecule | Respiratory |Gossamer Bio, Inc.|Trials Updated: Sep 16, 2021

GB001 development status

Highest phase Phase 2
Registered trials 2 across 1 sponsor since Sep 2018

GB001 target and mechanism

Molecular targetDP2
Target classReceptor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment578

FDA Designations

No designations recorded

GB001 clinical trials

GB001 · 2 trials · 3 indications

Phase 2 2
NCT03956862GB001 in Adult Participants With Chronic RhinosinusitisChronic Rhinosinusitis Without Nasal Polyps (CRSsNP)
COMPLETED97 Analytics
NCT03683576GB001 in Adult Subjects With Moderate to Severe AsthmaAsthma
COMPLETED481 Analytics
PHASE2COMPLETED
GB001 in Adult Participants With Chronic Rhinosinusitis
Chronic Rhinosinusitis Without Nasal Polyps (CRSsNP)Unlock trial analytics
PHASE2COMPLETED
GB001 in Adult Subjects With Moderate to Severe Asthma
AsthmaUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline to Week 16 in Sino-Nasal Outcome Test (SNOT) 22 Total Score
Baseline, Week 16

The SNOT-22 is a validated questionnaire to assess the impact of chronic rhinosinusitis (CRS) on quality of life and utilizes a 2-week recall period. It is a 22-item outcome measure on a 5-point category scale applicable to sinonasal conditions and surgical treatments. The total scores range from 0 to 110 with higher total scores implying greater impact of CRS on quality of life.

Proportion of Participants Who Experience Worsening of Asthma by Week 24
up to Week 24

Proportion of participants who experience worsening of asthma by Week 24 as defined by at least 1 of the following: * On 2 consecutive days, morning (AM) peak expiratory flow (PEF) ≤ 75% of mean AM PEF measured over the last 7 days of the Run-in * Forced expiratory volume in 1 second (FEV1) \< 80% of baseline * Increase in rescue medication use of ≥ 6 puffs/day on 2 consecutive days compared to mean use over the last 7 days of the Run-in * Increase in Asthma Control Questionnaire 5 (ACQ-5; see Outcome Measure 2 for description) score of ≥ 0.5 compared to baseline * The occurrence of a severe asthma exacerbation (asthma attack) defined as deterioration of asthma that leads to the use of systemic corticosteroids for at least 3 days, hospitalization, or an Emergency Department visit.

Secondary Endpoints

Change From Baseline to Week 16 in Lund-Mackay Score
Baseline, Week 16
Change From Baseline to Week 16 in Nasal Polyp Score (NPS)
Baseline, Week 16
Time to First Response in NPS
up to Week 16
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
GB001EXPERIMENTALGB001 40 mg once per day (QD) for 16 weeks
PlaceboPLACEBO_COMPARATORPlacebo QD for 16 weeks
GB001 20 mgEXPERIMENTALGB001 20 mg QD for 24 weeks
GB001 40 mgEXPERIMENTALGB001 40 mg QD for 24 weeks
GB001 60 mgEXPERIMENTALGB001 60 mg QD for 24 weeks

Interventions

NameTypeDescription
GB001DRUGfilm-coated oral tablet
PlaceboDRUGfilm-coated oral tablet
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites38

Inclusion Criteria: * A diagnosis of chronic rhinosinusitis with nasal polyps (CRSwNP) or chronic rhinosinusitis without nasal polyps (CRSsNP) by a physician at least 12 weeks before Screening Visit * Treated with stable intranasal corticosteroid (INCS) for at least 2 months prior to Screening Visi...

Countries:United StatesCzechiaUkraineAustriaBelgiumCanadaFranceGermanyPolandSpainUnited Kingdom
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Frequently asked questions about GB001

What is GB001?

GB001 is an investigational small molecule drug developed by Gossamer Bio, Inc. for respiratory conditions. It has been studied in Phase 2 clinical trials in adults with moderate to severe asthma and in adults with chronic rhinosinusitis, including chronic rhinosinusitis without nasal polyps (CRSsNP). It is not an approved therapy.

What is GB001 used for in asthma?

GB001 was studied as a treatment for adults with moderate to severe asthma. A Phase 2 trial, NCT03683576, enrolled 481 participants across the United States, Austria, Belgium, Canada, Czechia, France, Germany, Poland, Spain, Ukraine, and the United Kingdom. The trial was randomized, double-blind, and placebo-controlled, and it has been completed.

What does GB001 target?

GB001 targets DP2, also known as the prostaglandin D2 receptor 2, a G protein-coupled receptor. DP2 is a receptor target, and GB001 is a small molecule designed to act on it. The asthma and chronic rhinosinusitis trials were biomarker-selected, meaning enrollment was guided by a biomarker.

Who makes GB001?

GB001 is developed by Gossamer Bio, Inc., a biopharmaceutical company whose common stock trades under the ticker GOSS. Gossamer Bio sponsored the Phase 2 clinical program evaluating GB001 in asthma and chronic rhinosinusitis.

What phase is GB001 in?

GB001 is in Phase 2 development. It is an investigational drug and has not been approved by the FDA. Both of its Phase 2 trials have been completed, and there are no active trials of GB001 currently listed.

What clinical trials is GB001 in?

GB001 has been evaluated in two completed Phase 2 trials. NCT03683576 studied GB001 in 481 adults with moderate to severe asthma, and NCT03956862 studied GB001 in 97 adults with chronic rhinosinusitis, including chronic rhinosinusitis without nasal polyps (CRSsNP) and with nasal polyps (CRSwNP). Both were randomized, double-blind, and placebo-controlled.