A Phase 1 interventional study of IPM Ring-105 and IPM Ring-106 in Pharmacokinetics, Safety Issues and Bleeding, sponsored by International Partnership for Microbicides, Inc.. Completed at 2 sites in United States. Open to female participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-04-01.
Sponsored by International Partnership for Microbicides, Inc. · Phase 1, Interventional, and Diagnostic
A double-blind, randomized trial (1:1) to characterize the local and systemic pharmacokinetics (PK) of two DPV-LNG vaginal ring formulations
A Randomized, Double-Blind, Phase 1b Study in Healthy HIV-Negative Women to Evaluate the Pharmacokinetics, Safety, and Bleeding Patterns Associated with 90-Day Use of Core-Sheath Vaginal Rings Releasing Dapivirine and Levonorgestrel
Not at risk for pregnancy due to use of an effective nonhormonal method of contraception or practice per participant report at Enrollment, and intending to continue use of an effective, non-hormonal method for the duration of study participation. Effective methods and practices are defined as:
Consistent and correct male condom use*
*Details regarding this criterion will be specified in the IPM 056/CCN019B Study Manual
Exclusion Criteria:
Has a clinically apparent Grade 2 or higher pelvic exam finding (observed by study staff) at Screening or Enrollment, as per the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1, July 2017, and/or Addendum 1 (Female Genital Grading Table for Use in Microbicide Studies [Dated November 2007]) Note: Cervical bleeding associated with speculum insertion and/or specimen collection judged to be within the range of normal according to the clinical judgment of the IoR/designee is considered expected non-menstrual bleeding and is not exclusionary.
Note: Otherwise eligible participants with exclusionary pelvic exam findings may be enrolled/randomized after the findings have improved to a non-exclusionary severity grading or resolved within 90 days of providing informed consent for screening.
Participant report and/or clinical evidence of any of the following:
Any Grade 2 or higher laboratory abnormalities and any of the following Grade 1 laboratory abnormalities at the Screening Visit+:
Platelet count* Note: Otherwise eligible participants with an exclusionary laboratory result may be re-tested and may be enrolled/randomized after the findings have improved to a non-exclusionary severity grading or resolved within 90 days of providing informed consent for screening. Results of safety laboratory testing performed at the Enrollment Visit are expected to be received after the Enrollment Visit, and thus will not be exclusionary. Abnormal results will be noted as pre-existing conditions, and may result in product discontinuation, per IoR discretion as per Section 7.2.1 of the protocol.
Ring-105 (xx mg dapivirine + xxx mg levonorgestrel)
Combination Product: IPM Ring-105
Ring-106 (xx mg dapivirine + xxx mg levonorgestrel)
Combination Product: IPM Ring-106
DPV-LNG Ring containing xx mg of dapivirine + xx mg of levonorgestrel
DPV-LNG Ring containing xx mg of dapivirine + xx mg of levonorgestrel
Evaluate pharmacokinetics by assessing changes in baseline of DPV and LNG concentrations in plasma
DPV and LNG concentrations in plasma
Time frame: 90 days (3 cycles, one cycle is approximately 30 days of continuous use)
Evaluate pharmacokinetics by assessing changes in baseline of DPV and LNG concentrations in cervicovaginal fluid
DPV and LNG concentrations in cervicovaginal fluid
Time frame: 90 days (3 cycles, one cycle is approximately 30 days of continuous use)
The safety of two DPV-LNG vaginal ring formulations
Incidence of Grade 2, grade 3 or higher genitourinary adverse events as defined by the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected v2.1 July 2017, or Addendum 1 Female Genital Grading Table for Use in Microbicide Studies
Time frame: 90 days
Assessing vaginal bleeding patterns associated with the two DPV-LNG vaginal ring formulations
Total number of days bleeding/spotting by participant self-report in a diary card
Time frame: 90 days
Frequency of study vaginal ring removal (voluntary and involuntary)
Self-reported attitudes about ring attributes, use regimens and tolerability by completing an acceptability questionnaire. Residual drug levels (DPV and LNG) in returned vaginal rings
Time frame: 90 days (3 cycles, one cycle is approximately 30 days of continuous use)
Duration of study vaginal ring removal
Self-reported attitudes about ring attributes, use regimens and tolerability by completing an acceptability questionnaire. Residual drug levels (DPV and LNG) in returned vaginal rings
Time frame: 90 days (3 cycles, one cycle is approximately 30 days of continuous use)
Plan to share: No
No publications or documents are linked to this record.
This study is completed, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
International Partnership for Microbicides, Inc.