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PREVAIL - Pre-treatment Options for BV and Vaginal Live Biotherapeutic Intervention Trial - Randomized, open-label trial of various treatment options for bacterial vaginosis followed by a vaginal live biotherapeutic product

Randomized, open-label trial of various treatment options for bacterial vaginosis followed by a vaginal live biotherapeutic product.

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
PACTR
Registry ID
PACTR202606582879724
Enrollment
204
Registered
2026-06-05
Start date
2026-07-01
Completion date
Unknown
Last updated
2026-09-14

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

Conditions

Bacterial Vaginosis Urological and Genital Diseases

Interventions

Sponsors

Centre for AIDS Programme of Research in South Africa
Lead Sponsor
Caroline Mitchell
Collaborator

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: • Pre-menopausal women aged 18– 40 years old • BV diagnosed by a Nugent score of =7 • Not pregnant at screening/enrolment visit, and unlikely to have an early pregnancy per clinician’s assessment of last menstrual period and recent sexual activity. • If of reproductive potential, agrees to use a reliable form of contraception for at least 14 days prior to enrolment and to continue for at least the first 3 months of the study. Except for the Copper intra-uterine device (IUD) • HIV negative based on 4th generation antigen/antibody rapid HIV testing done at the screening visit • Willing and able to provide written informed consent • Willing and able to attend study visits and comply with study procedures

Exclusion criteria

Exclusion criteria: • Diagnosed with a sexually transmitted infection (STI) within the 30 days prior or at the screening/enrolment visit • Use of antibiotics in the past 30 days • Use of probiotics, prebiotics or synbiotics (supplements and products, oral or vaginal) within past 30 days • Vaginal cleansing practices or use of a vaginally inserted product in the past 30 days • Currently participating in another study of an investigational product • History of clinically significant vaginal, cervical, or uterine disease including but not limited to: cancer of the female reproductive tract • Use of a Copper IUD for contraception • Clinically significant acute or chronic medical condition or other circumstance that in the opinion of the PI/designee makes the participant unsuitable for participation in the study or jeopardises the safety or rights of the participant.

Design outcomes

Primary

MeasureTime frame
•L. crispatus dominance – The colonization outcome is a direct comparison between the arms at 3 weeks after completion of LBP. Colonization is defined as > 50% relative abundance of L. crispatus by metagenomics. ;•Safety Analysis – The number of reported adverse events deemed related to or potentially related to the study product will be tallied for each category of severity and compared between active arm and placebo.

Secondary

MeasureTime frame
• Kinetics of colonization with each of the strains contained in LC115 throughout the study. • Relative abundance of Lactobacillus iners and total Lactobacillus post BV treatment, post LBP and over time during follow-up. • Change in absolute bacterial load by qPCR after BV treatment and after LBP treatment. • Change in diversity and composition of the vaginal microbial community post BV treatment, post LBP and over time during follow-up. • Extended follow up to 12 months to assess durability of response for both the primary and secondary outcomes. • Participant acceptability and tolerability of LC115. Exploratory outcome • Exploratory data describing the relationship and degree of overlap between rectal and vaginal microbiota, including identification of shared taxa that may inform understanding of microbial reservoirs and BV recurrence.

Countries

South Africa

Contacts

Public ContactTanuja Gengiah

CAPRISA Co Investigator and CAPRISA Pharmacist Head of Pharmacy

Tanuja.Gengiah@caprisa.org+27316550562

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026