Patients with pheochromocytoma Patients with pheochromocytoma Patients with pheochromocytoma FOR ALL PHASES (Ib AND II): Concurrent diagnosis of pheochromocytoma Concurrent diagnosis of pheochromocytoma REGORAFENIB EXCLUSION CRITERIA: Patients with pheochromocytoma Untreated or metastatic pheochromocytoma Metastatic pheochromocytoma Patients with pheochromocytoma Concurrent diagnosis of pheochromocytoma Patients with pheochromocytoma Patients with pheochromocytoma History of or current pheochromocytoma Patients with pheochromocytoma Patients with pheochromocytoma Pheochromocytoma Subjects with pheochromocytoma. Patients with pheochromocytoma Have pheochromocytoma. Biochemically and/or radiologically confirmed pheochromocytoma, hyperaldosteronoma, or adrenocortical carcinoma Pheochromocytoma Patients with pheochromocytoma Endocrine disorders (such as primary aldosteronism, pheochromocytoma, hyper- or hypothyroidism) not controlled with medication