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Study Evaluating the Equivalence of GDC-229 and Metronidazole Vaginal Gel 0.75% in the Treatment of Bacterial Vaginosis

A Multicenter, Randomized, Double-Blind, Vehicle Controlled Study Evaluating the Therapeutic Equivalence and Safety of GDC-229 (Investigational Metronidazole 0.75% Vaginal Gel) and Metronidazole 0.75% Vaginal Gel in the Treatment of Bacterial Vaginosis

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03091777
Enrollment
871
Registered
2017-03-27
Start date
2017-03-10
Completion date
2018-03-27
Last updated
2020-01-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bacterial Vaginosis

Keywords

bacterial vaginosis, vaginal infection, BV

Brief summary

This research study is being done to compare the safety and efficacy of GDC-229 (test drug) against the currently marketed reference drug (metronidazole 0.75% vaginal gel) and to establish that these two drugs work better than placebo in subjects with BV.

Interventions

DRUGGDC-229

GDC-229 is a vaginal gel.

DRUGMetronidazole Vaginal Gel 0.75%

Metronidazole Vaginal Gel 0.75% is an FDA-approved drug

DRUGPlacebo

Inactive arm of the study

Sponsors

Premier Research
CollaboratorOTHER
Balmoral Medical company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Double-blind

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Non-pregnant female aged ≥ 18 years who is in good general health 2. Diagnosis of BV 3. Willing to refrain from using any intravaginal product (e.g., spermicide, tampon, douche, feminine deodorant spray, diaphragm, vaginal ring birth control, or condom with spermicide or insertion into the vagina of any drug or non-drug product during treatment), other than study treatment for the duration of the trial 4. Subjects of childbearing potential who have a negative urine pregnancy test at the Entry Visit (Visit 1) and agree to use an acceptable form of birth control throughout the study 5. Able to understand and willing to sign the informed consent form (ICF) and able to comply with the requirements of the protocol

Exclusion criteria

1. History of alcohol or substance abuse 2. Experienced a clinically significant medical event within 90 days 3. Abnormal pap or high risk human papillomavirus (HPV) 4. History or presence of clinically significant central nervous system (CNS), cardiovascular, pulmonary, hepatic, renal, hematologic, gastrointestinal, endocrine, immunologic, gynecologic, dermatologic, neurologic, oncologic, or psychiatric disease 5. Pregnant, lactating, or planning to become pregnant or breastfeed during the study period 6. Primary or secondary immunodeficiency 7. Evidence of any vulvovaginitis at screening other than BV 8. History of hypersensitivity or allergy to metronidazole, parabens, other nitroimidazole derivatives, or other ingredients of the GDC 229 (metronidazole 0.75% vaginal gel), metronidazole 0.75% vaginal gel (Oceanside Pharmaceuticals), or vehicle gel 9. Participating in another clinical trial

Design outcomes

Primary

MeasureTime frameDescription
Clinical CureDay 21-30Resolution of clinical signs and symptoms

Countries

United States

Participant flow

Recruitment details

Recruitment Period: March 2017 to November 2017 The location of clinical sites included women's health clinics and clinical research centers

Pre-assignment details

All subjects who met the entry criteria were randomized and enrolled into the study.

Participants by arm

ArmCount
Test Drug
GDC-229 gel applied vaginally as directed. GDC-229: GDC-229 is a vaginal gel.
287
Reference Drug
Metronidazole Vaginal Gel, 0.75% applied vaginally as directed. Metronidazole Vaginal Gel 0.75%: Metronidazole Vaginal Gel 0.75% is an FDA-approved drug
285
Vehicle Placebo Gel
GDC-229 Vehicle Placebo: Inactive arm of the study
292
Total864

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAbnormal Laboratory Value71112
Overall StudyAdverse Event214
Overall StudyLack of Efficacy005
Overall StudyLost to Follow-up12147
Overall StudyNoncompliance with study drug231
Overall StudyPhysician Decision101
Overall StudyPregnancy210
Overall StudyProtocol Violation211
Overall StudyWithdrawal by Subject426

Baseline characteristics

CharacteristicTest DrugTotalVehicle Placebo GelReference Drug
Age, Continuous33.2 years
STANDARD_DEVIATION 8.56
33.3 years
STANDARD_DEVIATION 9.32
33.5 years
STANDARD_DEVIATION 9.77
33.2 years
STANDARD_DEVIATION 9.61
Ethnicity (NIH/OMB)
Hispanic or Latino
54 Participants160 Participants56 Participants50 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
233 Participants701 Participants235 Participants233 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants3 Participants1 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants4 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
1 Participants10 Participants5 Participants4 Participants
Race (NIH/OMB)
Black or African American
161 Participants483 Participants164 Participants158 Participants
Race (NIH/OMB)
More than one race
2 Participants6 Participants3 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants10 Participants2 Participants4 Participants
Race (NIH/OMB)
White
117 Participants351 Participants117 Participants117 Participants
Region of Enrollment
United States
287 Participants864 Participants292 Participants285 Participants
Sex: Female, Male
Female
287 Participants864 Participants292 Participants285 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 2870 / 2850 / 292
other
Total, other adverse events
44 / 28737 / 28535 / 292
serious
Total, serious adverse events
2 / 2870 / 2852 / 292

Outcome results

Primary

Clinical Cure

Resolution of clinical signs and symptoms

Time frame: Day 21-30

Population: Modified Intent-to-Treat (mITT) population: All randomized subjects who received study treatment and returned for at least one post-baseline visit, but excluding those who demonstrate a positive test result for other concomitant vaginal or cervical infections at baseline (e.g. C. trachomatis, N. gonorrhoeae) or who have a baseline Nugent score\<4.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Test DrugClinical Cure135 Participants
Reference DrugClinical Cure129 Participants
Vehicle Placebo GelClinical Cure74 Participants
p-value: <0.001Chi-squared, Corrected
p-value: <0.001Chi-squared, Corrected

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026