This is a Phase 1, First-in-Human (FIH), randomized, single-blind, sponsor-open, placebo-controlled, SAD sequential group design study.

This study consists of four parts: Part 1, Part 2, Part 3, and Part 4.

The study will comprise of the following:

Part 1, Part 2, Part 3, and Part 4:

• A Screening Period of maximum 28 days.
• A Treatment Period during which subjects will be resident at the Clinical Unit from 2 days before IMP (Investigational Medicinal Product) administration (Day -2) until at least 48 hours after IMP administration; discharged on Day 3.

Part 4:

• A second Treatment Period during which subjects will be resident at the Clinical Unit from the day of the Follow-up Visit (Day 7 ±1 days after the last IMP dose) until at least 48 hours after the second IMP administration; discharged on Day 10.

Part 1, Part 2, Part 3, and Part 4:

• A Follow-up Visit after 7 (Part 1, Part 2, and Part 3) or 14 (Part 4) ±1 day after the last IMP dose.