The study compound is being studied to determine whether it can be used for the treatment of chronic spontaneous urticaria (CSU) and atopic dermatitis (eczema). CSU is a common and distressing skin condition. It causes red, raised, itchy and sometimes painful rash or patches (hives or wheals) on the skin with no known obvious cause. Atopic dermatitis (eczema) is a condition that causes dry, itchy and inflamed skin.
In this trial we will investigate how safe the study compound is and how well it is tolerated when it is used by healthy participants. We will measure the amount of the study compound in blood and urine. We will also measure how the study compound is broken down or changed in the body.
We will compare the effects of the study compound with the effects of a placebo. A placebo is a substance that looks like the study drug but does not contain an active ingredient. You will be given the study compound or placebo as capsules by mouth. In Part A, you will receive the study compound or placebo once. In Part B, you will receive the study compound once daily for 7 days. You can participate in one part of the study.
During the trial, your heart will be monitored continuously once (Part A) or twice (Part B). Each time, this will take place from 30 minutes before administration of the study drug until 24 hours afterwards. You will have sticky patches (electrodes) attached to your chest that are connected to a device. At various times, you will have to lie still for 15 minutes without moving, talking or sleeping. You also cannot listen to music, watch TV or use a laptop or phone. However, apart from these times, you may do so.
All (potential) medicines can cause side effects. Because the compound has not yet been administered to humans, there are currently no known side effects in humans. In rare cases (<0.1%), serious side effects can occur during the first administration to humans. The compound has already been extensively tested in the laboratory and on animals. Prior to the medical screening, you will receive written information about the trial, which also describes the possible side effects based on these animal tests. This information will also be discussed with you at the start of the medical screening. You can then ask the screening physician or nurse any question you may have. The medical screening will only take place after you have given written consent to participate in the trial. We want to emphasize that even after giving written consent, participation in any clinical trial is voluntary. You can decide at any time not to participate or to stop the medical screening or the trial. You do not need to provide a reason for why you no longer wish to participate.
Prior to screening you have to stay fasted for 4 hours. You can only drink water prior to your visit. This means that we will ask you to fast (not to eat) prior to any participation in the trial. You have not yet signed the form for participation in the trial. After the screening it will be announced whether you can participate.