GLPwatch

A Study in Women With Overweight or Obesity to Test Whether Different Doses of BI 456906 Influence the Amount of a Contraceptive in the Blood

NCT05896384 · Completed

Last updated 2026-05-28

This clinical trial is testing how different doses of the medication BI 456906 affect the levels of a birth control hormone (ethinylestradiol) in the blood of women who are overweight or have obesity.

Status Completed The study has finished.
Phase Phase 1 Checks safety and dosing in a small group.
Type Interventional (clinical trial)
Design open-label (no blinding) treatment study
Participants 32 people
Who can join Ages 18–60 · female only Healthy volunteers accepted.
Timeline Started 2023-12 · est. completion 2025-03
Where 1 site · Germany

What this study is testing ClinicalTrials.gov NCT05896384 ↗

Description as written by the study sponsor.

This study is open to women with overweight or obesity who are otherwise healthy. Women with a body mass index (BMI) from 27 to 40 kg/m2 can participate. The purpose of this study is to find out whether taking multiple doses of BI 456906 influences the amount of ethinylestradiol and levonorgestrel in the blood. Ethinylestradiol and levonorgestrel are ingredients of the contraceptive Microgynon®. The study has 2 treatment periods. In Period 1, participants get 1 tablet of Microgynon®. In Period 2, participants get weekly injections of BI 456906 for 7 months. The doses of BI 456906 increase each month. At 8 specific timepoints during Period 2, participants also get 1 tablet of Microgynon®. Participants visit the study site up to 40 times. At 8 visits, participants take Microgynon® and stay overnight at the site. During the visits, the doctors collect information about participants' health and take blood samples from the participants. They compare the amount of ethinylestradiol and levonorgestrel in the blood in Period 2 with the amounts in Period 1. Doctors also regularly check participants' health and take note of any unwanted effects.

Treatments tested

Main thing measuredArea under the concentration-time curve of ethinylestradiol in plasma over the time interval from 0 to the last quantifiable data point (AUC0-tz)
SponsorBoehringer Ingelheim
Conditions studiedHealthy
GLP-1 drugs

Full protocol, eligibility, and contacts on ClinicalTrials.gov NCT05896384 ↗