TASK-1 x TASK-3

This investigator-initiated study aims to determine the effects of BAY2586116 (a novel TASK channel blocker nasal spray) on sleep apnoea severity and the potential influence of route of breathing.

BAY2586116 is a new drug in development for the treatment of obstructive sleep apnea. This is a condition that causes breathing to repeatedly stop and start during sleep due to blocked upper airways.
This is a study to learn more how safe BAY2586116 is, how it affects the body, how it moves into, through and out of the body in healthy Japanese male participants.
The participants will be randomly chosen to receive 1 of 3 different doses of BAY2586116 or to receive a placebo. A placebo looks like a treatment but does not have any medicine in it. The participants will receive their study treatment either 1 single time or once a day for 5 days through a nasal spray.
The participants will be in the study for a total of about 12 weeks. They will stay at their study site for either 5 or 9 days, depending on which study treatment they receive. During this time, the doctors will take blood and urine samples and check the participants' health. About 6 to 8 days after the participants receive their last treatment, the researchers will check the participants' health again.
The main aim of this study is to learn more about how safe BAY2586116 is compared to the placebo. To answer this question, the researchers will count the number of participants who have medical problems that may or may not be related to the study treatment. These medical problems are also known as "adverse events" while they are in the study.

Researchers are looking for a better way to treat people with obstructive sleep apnea (OSA). In people with OSA, the upper airways can narrow or close repetitively while sleeping. These breathing interruptions lead to reduction of oxygen in the blood or short arousals from sleep. Before a treatment can be approved for people to take, researchers do clinical trials to better understand its safety and how well it works.
In this trial, the researchers want to learn more about how well BAY2586116 works in a small number of participants with OSA. The trial will include about 160 men and women who have OSA and are at least 18 years old. Women can only be included in this trial if they are not able to have children naturally.
In this trial, the participants will take BAY2586116 and a placebo. A placebo looks like a treatment but does not have any medicine in it. All of the participants will take BAY2586116 through a nasal spray. They will also take the placebo as a nasal spray.
This will be a crossover trial. This means all the participants will take both trial treatments one after the other, but in a different order. The participants will take each treatment once a day for 7 days.
The researchers will use a measurement called the apnea-hypopnea-index (AHI) to measure the severity of the participants' OSA. The researchers will then compare the participants' AHI scores when they take BAY2586116 and when they take the placebo.
During study, the participants will visit their trial site 5 times. At these visits the doctors will take blood samples, do physical examinations and check the participants' heart health using an electrocardiogram (ECG). They will also ask the participants questions about how they are feeling and if they have any medical problems. At 3 of the visits, the participants will stay at the trial site overnight. At these visits, the doctors will calculate the number of times the participants stop breathing per hour of sleep. After treatment, the participants will have a final visit 7 days later so the doctors can check their health.