Effects of a Vaginal Contraceptive Ring on Vaginal Microbiota and Local Immunity
2 other identifiers
interventional
81
1 country
1
Brief Summary
To assess potential benefits associated with both intermittent (use for 3 weeks, remove for 1 week, as defined in the package insert) and continuous (use for 4 weeks, then replace) CVR use among women either with BV or at high risk for BV. The investigators will also recruit women who are HSV2-infected.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for phase_4
Started Mar 2016
Longer than P75 for phase_4
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 24, 2015
CompletedFirst Posted
Study publicly available on registry
May 4, 2015
CompletedStudy Start
First participant enrolled
March 1, 2016
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 1, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
November 1, 2021
CompletedResults Posted
Study results publicly available
February 5, 2025
CompletedFebruary 5, 2025
January 1, 2025
5.7 years
April 24, 2015
April 17, 2023
January 14, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Quantity of BV-associated Bacteria by qPCR and High-throughput Sequencing Tests
Change in Log10 quantity of bacteria detected (L. crisptatus, L. jensenii, L. iners, G. vaginalis, Megasphaera spp. BVAB2)
Up to 8 months
Secondary Outcomes (1)
Number of Visits With BV
Up to 8 months
Study Arms (2)
Cyclic NuvaRing CVR Use
ACTIVE COMPARATORCVR use for 3 weeks, remove for 1 week, then replace
Continuous NuvaRing CVR Use
EXPERIMENTALCVR use for 4 weeks, then replace
Interventions
Eligibility Criteria
You may qualify if:
- ≥18-40 year old women
- BV+ by Amsel criteria and Nugent score OR history of BV in the prior 6 months
- Willing to use the NuvaRing as directed
- Not intending or wishing to become pregnant over the course of the study
- Capable of providing written informed consent
You may not qualify if:
- Current pregnancy
- Desire/intent to become pregnant over the course of the study
- Women who are less than 6 weeks postpartum
- Contraindications to hormonal contraceptive use per package insert, including history of deep vein thrombosis, smoking in women older than 35 years
- Current IUD
- Unable to comprehend consent material because of language barrier or psychological difficulty
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
UW Virology Research Clinic
Seattle, Washington, 98104, United States
Related Publications (5)
Veres S, Miller L, Burington B. A comparison between the vaginal ring and oral contraceptives. Obstet Gynecol. 2004 Sep;104(3):555-63. doi: 10.1097/01.AOG.0000136082.59644.13.
PMID: 15339769BACKGROUNDAtashili J, Poole C, Ndumbe PM, Adimora AA, Smith JS. Bacterial vaginosis and HIV acquisition: a meta-analysis of published studies. AIDS. 2008 Jul 31;22(12):1493-501. doi: 10.1097/QAD.0b013e3283021a37.
PMID: 18614873BACKGROUNDCohen CR, Lingappa JR, Baeten JM, Ngayo MO, Spiegel CA, Hong T, Donnell D, Celum C, Kapiga S, Delany S, Bukusi EA. Bacterial vaginosis associated with increased risk of female-to-male HIV-1 transmission: a prospective cohort analysis among African couples. PLoS Med. 2012;9(6):e1001251. doi: 10.1371/journal.pmed.1001251. Epub 2012 Jun 26.
PMID: 22745608BACKGROUNDHeffron R, Donnell D, Rees H, Celum C, Mugo N, Were E, de Bruyn G, Nakku-Joloba E, Ngure K, Kiarie J, Coombs RW, Baeten JM; Partners in Prevention HSV/HIV Transmission Study Team. Use of hormonal contraceptives and risk of HIV-1 transmission: a prospective cohort study. Lancet Infect Dis. 2012 Jan;12(1):19-26. doi: 10.1016/S1473-3099(11)70247-X. Epub 2011 Oct 3.
PMID: 21975269BACKGROUNDVodstrcil LA, Hocking JS, Law M, Walker S, Tabrizi SN, Fairley CK, Bradshaw CS. Hormonal contraception is associated with a reduced risk of bacterial vaginosis: a systematic review and meta-analysis. PLoS One. 2013 Sep 4;8(9):e73055. doi: 10.1371/journal.pone.0073055. eCollection 2013.
PMID: 24023807BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Limitations and Caveats
High rate of participant withdrawal from the study Single center experience
Results Point of Contact
- Title
- Christine Johnston
- Organization
- University of Washington
Study Officials
- PRINCIPAL INVESTIGATOR
Christine Johnston, MD, MPH
University of Washington
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- No
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- PREVENTION
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor, Medicine/Division of Allergy and Infectious Diseases
Study Record Dates
First Submitted
April 24, 2015
First Posted
May 4, 2015
Study Start
March 1, 2016
Primary Completion
November 1, 2021
Study Completion
November 1, 2021
Last Updated
February 5, 2025
Results First Posted
February 5, 2025
Record last verified: 2025-01