This study will assess the pharmacokinetics of RLX030 during and after administration in subjects with mild to severe hepatic impairment and matched healthy control subjects.

20 to 24 patients and 20 to 24 healthy subjects will be enrolled.

Inclusion criteria:

• All subjects:

  • Female subjects must be of non-child bearing potential OR use an effective method of contraception and sexually active males must use a condom during intercourse while taking the drug and for 5 half-lives after stopping treatment

• Subjects with hepatic impairment:

  • Subjects must have either mild, moderate or severe hepatic impairment

Exclusion criteria:

• All subjects

  • Hepatic impairment due to non-liver disease
  • Use of other investigational drugs at time of enrollment
  • History of malignancy of any organ system
  • Donation or loss of 400 mL or more of blood or plasma within 8 weeks prior to initial dosing
  • Hemoglobin levels below 10.0 g/dL at screening or baseline

• Subjects with hepatic impairment:

  • Presence of any non-controlled and clinically significant disease that could affect the study outcome or that would place the patient at undue risk
  • Treatment with any cytostatic drug, vasodilator, autonomic alpha blocker or B2 agonist
  • Any surgical or medical condition other than hepatic impairment which might significantly alter the distribution or excretion of drugs

Other protocol-defined inclusion/exclusion criteria may apply.