Study to Evaluate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of RM-493 Administered to Healthy, Obese, Non-diabetic Volunteers

The purpose of this study is to evaluate the multiple dose safety and tolerability of RM-493 (setmelanotide) as well as pharmacokinetic (PK) and pharmacodynamic (PD; weight loss) profile, in healthy obese patients for 2 to 4 weeks. In addition, one panel of patients with a specific genetic deficiency in the hypothalamic leptin- proopiomelanocortin (POMC) - melanocortin-4 receptor (MC4R) pathway, those with heterozygous partial or full loss of function (LOF) of the MC4R gene, will also be studied. The study drug (RM-493 and placebo) will be administered subcutaneously in a blinded fashion by subcutaneous (SC) infusion or injection.