Study in Healthy Male Subjects to Evaluate the Effect of Itraconazole and Rifampicin on the PK of Fedovapagon

Inclusion Criteria: * Healthy males aged 18 to 45 * Have a body mass index between 18 and 29.9 kg/m2 (weight: ≥50 kg and ≤100 kg) * No clinically significant medical history * Ability to comply with the requirements of the study * Provide written informed consent * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) should be below or equal to upper level of normal (ULN). Otherwise liver enzymes should show no clinical significant abnormalities. Total bilirubin should not exceed 1.5 x ULN. Liver enzymes will be re-tested only once before randomization if required. * Be judged by the Investigator to be in good health based on medical history (in particular, no congestive heart failure, ischemic heart disease, valvular heart disease, significant pulmonary disease, renal failure, edematous disorder, liver disease, gastric disorders, porphyria, diabetes mellitus or hereditary disorders of carbohydrate metabolism), physical examination, vital sign measurements and laboratory safety tests * Agree to refrain from the consumption of grapefruit or grapefruit juice, apple or orange juice, vegetables from the mustard green family (e.g., kale, broccoli, watercress, collard greens, kohlrabi, brussels sprouts, mustard) and charbroiled meats containing products beginning 1 week prior to administration of the initial administration of trial drug, throughout the trial * Use of any prescribed medication or St John's Wort within 14 days (or 5 half-lives if this is longer) or over-the-counter medication (except paracetamol) within 1 week of dosing. Specific medication not to be taken within 2 weeks of (before or after) administration of itraconazole is described in the Summary of Product Characteristic for Sempera®