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. (part of Population Council) · 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
1,383 studies on the registry are indexed under Hemorrhage; 244 are open to participants now.
This study's enrollment of 40 is below the median of 102 across 926 interventional studies indexed under Hemorrhage.
Browse Hemorrhage studies →International Partnership for Microbicides, Inc. is the lead sponsor of 45 studies on the registry; none are open to participants now.
Of its 13 completed or terminated interventional studies of FDA-regulated products, 5 (38%) have results posted.
First submitted before International Partnership for Microbicides, Inc. became part of Population Council.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Not at risk for pregnancy due to use of an effective nonhormonal method of 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 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+:
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.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.
Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
CYP3A (CYP3A4) inhibitors and inducers
CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.
Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Ran from Jun 2022 to primary completion in Oct 2024, 27 months.
Of 17 phase 1 interventional studies under Hemorrhage, half reached primary completion within 27 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 42. This study's 27 months is close to that.
How these figures are worked out, and which studies are left out of them.
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. →