A Study to Evaluate the Efficacy and Safety of Subcutaneous Levonorgestrel Butanoate for Female Contraception
A Phase 2b Study to Evaluate the Efficacy and Safety of Subcutaneous Levonorgestrel Butanoate for Female Contraception
1 other identifier
interventional
165
0 countries
N/A
Brief Summary
This is a multicenter, open-label, Phase 2b study to evaluate the efficacy and safety of 2 LB SQ injections administered at a 4-month (approximately 17 weeks) interval for female contraception.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Apr 2026
Typical duration for phase_2
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 22, 2025
CompletedFirst Posted
Study publicly available on registry
October 29, 2025
CompletedStudy Start
First participant enrolled
April 1, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
March 31, 2029
October 29, 2025
October 1, 2025
2.8 years
October 22, 2025
October 27, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
To evaluate the contraceptive efficacy of 2 LB SQ injections administered at a 4-month (approximately 17 weeks)interval over 8 cycles
As measured by The cumulative pregnancy percentage (calculated using Kaplan-Meier) through 8 cycles
224 days
Secondary Outcomes (5)
To assess the safety of 2 LB SQ injections
240 days
To further explore the contraceptive efficacy of 2 LB SQ injections
224 days
To explore bleeding patterns in participants receiving 2 LB SQ injections
240 days
To evaluate acceptability of 2 LB SQ injections
240 days
To evaluate satisfaction of 2 LB SQ injections
240 days
Study Arms (1)
LB 60 mg SQ (70 mg/mL)
EXPERIMENTALThe participants will receive 2 injections of LB 60 mg SQ (70 mg/mL); 1 at Visit 2 (Day 1) and 1 at Visit 7 (Day 120).
Interventions
60 mg SQ (70 mg/mL)
Eligibility Criteria
You may qualify if:
- Participant understands and signs an ICF approved by the institutional review board prior to any screening activities.
- Female and 18 to 35 years of age, inclusive, at enrollment (Visit 2, Day 1).
- Good general overall health with no chronic medical conditions that result in periodic exacerbations requiring significant medical care.
- Menstrual cycles of 21 to 35 days in length with typical variation in cycle length of 5 days or less when not using hormonal contraception.
- Intact uterus and at least 1 ovary.
- If used a hormonal contraceptive or intra-uterine device (IUD) prior to enrollment, the participant meets the appropriate criteria for time since last use:
- Oral, transdermal, vaginal, copper or LNG IUD or implantable hormonal contraceptives: participants must have discontinued hormone use ≥4 days prior to start of study treatment, experienced bleeding that is consistent with menses in the opinion of the investigator and not have had unprotected intercourse since discontinuing the method.
- Injectable contraception (e.g., DMPA): No injection during the 10 months prior to the Screening Visit, unless the participant has returned to normal menses (i.e., 2 consecutive menses) since last injection.
- Negative urine pregnancy test at enrollment (Visit 2, Day 1).
- Body mass index \<40 kg/m2.
- Willing to use the study method as the primary method of contraception until the end of the Treatment Period.
- At risk for pregnancy defined as:
- Expecting to have ≥1 act of heterosexual intercourse each month during study participation until the end of the Treatment Period.
- No medical history suggesting possible infertility or hypofertility, including but not limited to, ectopic pregnancy or pelvic infection (unless has had a subsequent intra-uterine pregnancy).
- Has a sexual partner with no known problems with infertility orhypofertility.
You may not qualify if:
- Planning pregnancy during study participation through the End -of -Treatment Visit (Visit 11, Day 240).
- Is post-partum and has not had 2 spontaneous menses (1 cycle) since delivery or 1 menses since first or second trimester abortion or miscarriage.
- Breastfeeding or within 30 days of discontinuing breastfeeding unless the participant has already had 2 menses (1 cycle) following discontinuation of breastfeeding.
- Undiagnosed abnormal genital bleeding.
- Undiagnosed vaginal discharge, lesions, or abnormalities.
- Participating in another clinical study involving an IP or device within 30 days prior to the Screening Visit or planning to participate in another clinical study during this study.
- Not living in the catchment area of the study site.
- Known hypersensitivity or contraindication to progestins, including the active substance LB or any excipients of the study treatment.
- Current need for therapeutic anticoagulation or known history of thrombophilia.
- Use or planned use of exogenous reproductive hormones during study participation.
- Body weight change exceeding 10% over the previous year or planned significant weight loss during the study related to bariatric surgery, dieting, or planned treatment.
- Uncontrolled hypertension, in which diastolic blood pressure remains ≥95 mmHg or systolic blood pressure remains ≥145 mmHg.
- Smoking nicotine (e.g., cigarettes or electronic cigarettes) AND has at least 1 of the following comorbidities or conditions (at the discretion of the investigator):
- Current or history of venous thrombophlebitis or thromboembolic disorders (including deep vein thrombosis and pulmonary embolism).
- Current or history of cerebrovascular or coronary-artery disease.
- +16 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
MeSH Terms
Interventions
Study Officials
- STUDY DIRECTOR
Diana Blithe, PhD
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- NA
- Masking
- NONE
- Purpose
- PREVENTION
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Senior Program Director, NICHD
Study Record Dates
First Submitted
October 22, 2025
First Posted
October 29, 2025
Study Start
April 1, 2026
Primary Completion (Estimated)
December 31, 2028
Study Completion (Estimated)
March 31, 2029
Last Updated
October 29, 2025
Record last verified: 2025-10
Data Sharing
- IPD Sharing
- Will not share