The study will enroll a total of approximately 48 participants. This study will be conducted in two parts: Part 1 and Part 2. Part 1 will consist of 48 participants enrolled in 4 active treatment groups. Each treatment group will enroll 12 participants with a minimum of 4 DG and IG participants in each group. Participants in Part 1 will be randomly assigned (by chance, like flipping a coin) to one of the four active treatment groups—which will remain undisclosed to the participant and study doctor during the study (unless there is an urgent medical need):