The main aim of this study is to investigate the possible effect of GLPG4716 on the pharmacokinetics (PK) of pirfenidone and nintedanib. Further aims are to investigate safety and tolerability of GLPG4716 alone or administered simultaneously with pirfenidone or nintedanib.

Inclusion Criteria:

• Male or female between 18 and 55 years of age (extremes included), on the date of signing the informed consent form (ICF). Female subjects should be of non-childbearing potential.
• A body mass index (BMI) between 18.0 and 30.0 kg/m2, inclusive.
• Judged to be in good health by the investigator based upon the results of a medical history, physical examination, vital signs, electrocardiogram (ECG), and fasting clinical laboratory safety tests. Aspartate transaminase and alanine aminotransferase must be no greater than the upper limit of normal (ULN). Other clinical laboratory safety test results must be within the reference ranges or test results that are outside the reference ranges need to be considered not clinically significant in the opinion of the investigator

This list only includes the key inclusion criteria.

Exclusion Criteria:

• Known hypersensitivity to ingredients of GLPG4716, pirfenidone, or nintedanib or history of a significant allergic reaction to ingredients of GLPG4716, pirfenidone, or nintedanib as determined by the investigator.
• Treatment with any medication (including over-the-counter (OTC) and/or prescription medication, dietary supplements, nutraceuticals, vitamins and/or herbal supplements, and hormonal replacement therapy) except occasional paracetamol (maximum dose of 2 g/day and maximum of 10 g/2 weeks) in the last 2 weeks or 5 half-lives of the drug, whichever is longer, prior to the first dosing.

This list only includes the key exclusion criteria.