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GDC-6988

Phase 1

Non-cystic Fibrosis Bronchiectasis | Small molecule | Respiratory |Roche Holding AG|Last Updated: Sep 2, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment128

FDA Designations

No designations recorded

Clinical trial landscape

GDC-6988 · 1 trial · 2 indications

Phase 1 1
NCT06603246A Study to Test the Safety and Effects of Inhaled GDC-6988 in Participants With Muco-obstructive DiseaseNon-cystic Fibrosis Bronchiectasis
RECRUITING128 Analytics
PHASE1RECRUITING
A Study to Test the Safety and Effects of Inhaled GDC-6988 in Participants With Muco-obstructive Disease
Non-cystic Fibrosis BronchiectasisUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With Adverse Events (AEs), with Severity Assessed by Division of Acquired Immunodeficiency Syndrome (DAIDS) Toxicity Grading Scale
From baseline up to 6 weeks

The AEs will be graded according to the DAIDS table for grading the severity. The severity level is graded from Grade 1 (mild) to 4 (Potentially Life-Threatening).

Percentage of Participants With Spirometry Abnormalities
From baseline up to 6 weeks

Secondary Endpoints

Part A: Percentage of Participants With Spirometry Abnormalities Without and With Albuterol Pretreatment
From baseline up to 6 weeks
Plasma Concentration of GDC-6988 at Specified Timepoints
Part A: Day 1 and Day 2, Part B: Day 1, Day 8 and Day 15
Part B: Change From Baseline in Sputum Percent Solids at Day 8 and Day 14
Baseline, at Day 8 and at Day 14
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
GDC-6988EXPERIMENTALParticipants in Cohort 1 will receive low-dose GDC-6988, twice a day (BID) on Day 1, followed by high-dose, BID on Day 2. Participants in Cohort 2 will receive low-dose, followed by high-dose GDC-6988, BID for 14 days. Participants in Cohorts 3 and 4 will receive low-dose GDC-6988, BID for 14 days.

Interventions

NameTypeDescription
GDC-6988DRUGGDC-6988 will be administered using a dry powder inhalation (DPI) device.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: * Percent predicted FEV1 ≥ 40% by spirometry during screening * Ability to demonstrate correct use of the smart DPI at screening, in the investigator's judgment * On a stable treatment regimen for muco-obstructive diseases for ≥ 28 days prior to initiation of study treatment and...

Countries:United States
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Recent Changes (Last 90 Days)

LOWSep 2, 2026NCT06603246lastUpdatePostDate: changed
LOWSep 2, 2026NCT06603246lastUpdatePostDate: changed
LOWSep 2, 2026NCT06603246lastUpdatePostDate: changed
LOWAug 4, 2026NCT06603246lastUpdatePostDate: changed
LOWAug 4, 2026NCT06603246lastUpdatePostDate: changed
LOWJul 6, 2026NCT06603246lastUpdatePostDate: changed
LOWJul 6, 2026NCT06603246lastUpdatePostDate: changed

Frequently asked questions about GDC-6988

What is GDC-6988 used for?

GDC-6988 is an investigational small molecule being developed for non-cystic fibrosis bronchiectasis, a respiratory condition. It is also being studied in chronic obstructive pulmonary disease. The drug is administered via inhalation and is currently in Phase 1 clinical development.

Who makes GDC-6988?

GDC-6988 is being developed by Roche Holding AG, which trades under the ticker RHHBY. The company is conducting a Phase 1 clinical trial to evaluate the safety and effects of the inhaled drug in participants with muco-obstructive disease.

What phase is GDC-6988 in?

GDC-6988 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is recruiting participants to assess the safety and effects of the inhaled medication.

What clinical trials is GDC-6988 in?

GDC-6988 is being studied in a Phase 1 clinical trial with the identifier NCT06603246. This trial is titled 'A Study to Test the Safety and Effects of Inhaled GDC-6988 in Participants With Muco-obstructive Disease' and is recruiting 128 participants in the United States.

How is GDC-6988 administered?

GDC-6988 is administered via inhalation. The drug is being developed as an inhaled small molecule for the treatment of muco-obstructive diseases, including non-cystic fibrosis bronchiectasis and chronic obstructive pulmonary disease.