An open-label, single-dose study to investigate the pharmacokinetics of ACT-1014-6470 in subjects with severe renal impairment compared to control subjects

Inclusion Criteria:

• Signed informed consent in a language understandable to the subject prior to any study-mandated procedure.
• Male or female subject aged at least 18 years at Screening.
• Women of non-childbearing potential (e.g. post-menopausal)

Additional inclusion criteria for subjects with severe renal impairment (Group A).

- Severe renal function impairment as confirmed at Screening based on an estimated glomerular filtration rate (eGFR) using the Modification of Diet in Renal Disease (MDRD) formula of < 30 mL/min (not on dialysis).

Additional inclusion criteria for control subjects (Group B):

• Normal renal function as confirmed at Screening based on eGFR.
• Each control subject must be matched to the values of one subject with severe renal impairment based on age (±10 years difference allowed), BMI (±15% difference allowed), and sex, determined by results at Screening.

Exclusion Criteria:

- Any circumstances or conditions, which, in the opinion of the investigator, may affect full participation in the study or compliance with the protocol.