Single Ascending Dose Study of MK-1092 in Healthy Participants and in Participants With Type 1 and Type 2 Diabetes Mellitus (MK-1092-001)

There will be 4 parts in this study. In Part 1, healthy adult participants will be randomized to receive blinded MK-1092 subcutaneously (SC) or glargine SC, as a single dose under the euglycemic clamp. Once a safe and tolerated dose that achieves GIRmax is identified in Part 1, Part 2 will start. In Part 2, 4 different healthy adult participants will be enrolled in a single panel and receive open-label MK-1092 SC as a single dose under the euglycemic clamp and also receive an intravenous infusion of Humalog®. In Part 3, adult participants with T1DM will be randomized to receive blinded MK-1092 SC or insulin glargine SC, as a single dose under the euglycemic clamp. Part 4 includes a 3-period (Periods 1, 2, and 3) design that will explore up to 3 single subcutaneous doses of MK-1092 or insulin glargine in participants with Type 2 diabetes mellitus.