NCT06354257

A 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 Age

A Phase 1, Open-label, Fixed Sequence, 1-way Drug-drug Interaction Study to Investigate the Pharmacokinetics of GSK3036656 and an Oral Contraceptive Containing Ethinyl Estradiol and Levonorgestrel When the Oral Contraceptive is Administered Alone and in Combination With GSK3036656 in Healthy Female Participants of Nonchildbearing Potential Aged 18-65 Years of Age

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 20 (actual)
• Sponsor: GlaxoSmithKline · Industry
• Sex: Female
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to provide data showing if there are any effects of GSK3036656 on a combined oral contraceptive containing Ethinyl Estradiol (EE) and Levonorgestrel (LNG), which will help inform future studies on suitable contraceptive measures to be used.

Conditions

• Tuberculosis

Interventions

Type	Name	Description
DRUG	Microgynon	Participants 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.
DRUG	GSK3036656	Participants 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.

Timeline

• Start date: 2024-04-05
• Primary completion: 2024-07-01
• Completion: 2024-07-01
• First posted: 2024-04-09
• Last updated: 2025-08-26
• Results posted: 2025-08-26

Locations

1 site across 1 country: Spain