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Microgynon

Phase 1

Tuberculosis | Small molecule | Infectious Disease |GSK plc|Last Updated: Aug 26, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment20
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06354257A Study to Investigate the Pharmacokinetics of a Combined Oral Contraceptive When Given Alone and in Combination With GSK3036656 in Female Participants of Non-childbearing Potential Aged 18 to 65 Years of AgePHASE1 COMPLETED 20Apr 5, 2024Jul 1, 2024Aug 26, 20251 Spain
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Study Endpoints
Primary Endpoints
Area Under the Plasma Drug Concentration (AUC) From Time Zero Extrapolated to Infinity (AUC[0-inf]) After a Single Dose of EE and LNG
At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

AUC(0-inf) is defined as the area under the concentration-time curve from time 0 extrapolated to infinity and was calculated by using a non-compartmental analysis.

Maximum Observed Plasma Concentration (Cmax) After a Single Dose of EE and LNG
At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Cmax is defined as the maximum observed plasma concentration determined directly from the concentration-time data and was calculated by using a non-compartmental analysis.

Secondary Endpoints
AUC Versus Time Curve From Time Zero During a Dosage Interval of Time at Steady State [AUC(0-tau)] of GSK3036656 With EE/LNG
At Day 15
Cmax at Steady State of GSK3036656 With EE/LNG
At Day 15
Trough Plasma Concentration (Ctau) at Steady State of GSK3036656 With EE/LNG and GSK3036656 Alone
At Day 8, 10, 12, 15 and 16
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Combined Participants GroupEXPERIMENTALParticipants received a dose of Microgynon \[0.03 mg Ethinyl Estradiol (EE)/0.15 mg Levonorgestrel (LNG)\] on Day 1 of Treatment Period 1. In Treatment Period 2, they received GSK3036656 40 mg on Day 4 followed by GSK3036656 20 mg once daily from Day 5 to Day 14. In Treatment Period 3, participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17.
Interventions
NameTypeDescription
MicrogynonDRUGParticipants received 1 dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1 and 1 dose co-administered with GSK3036656 20 mg on Day 15 of Treatment Period 3.
GSK3036656DRUGParticipants received 1 loading dose of 40 mg on Day 4 and a dose of 20 mg on Days 5 to 14 once daily in Treatment Period 2. In Treatment Period 3, participants received one 20 mg dose along with Microgynon (0.03 mg EE/0.15 mg LNG) on Day 15 after which a 20 mg dose on Days 17 and 18 once daily.
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Eligibility Criteria
Age Range18 Years — 65 Years
SexFEMALE
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: Age: 1. Participant was 18 to 65 years of age, inclusive, at the time of signing the informed consent. Type of Participant and Disease Characteristics: 2. Participants were healthy or compensated, as determined by the investigator or medically qualified designee, based on a...

Countries:Spain
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