This is a 2-part study. Part 1 is a phase I, double-blind, placebo-controlled, randomized study to assess the safety, tolerability, pharmacokinetic (PK) profile, pharmacodynamic (PD) and subjective drug intensity (SDI) of single ascending intravenous (IV) doses of ELE-101 in healthy male and female adult participants. Part 2 is a Phase IIa, open-label study to evaluate a range of pharmacodynamic effects of a single intravenous dose of ELE-101 in patients with depression.
Healthy participants will receive either ELE-101 or placebo as an IV infusion in Part 1 and patients with MDD will receive ELE-101 as an IV infusion in Part 2.