A Research Study of How Safe a New Medicine Called NNC0519 0130 is and to Test Its Effect in People Living With Excess Body Weight With or Without Type 2 Diabetes

A new study medicine called NNC0519-0130 to improve treatment options for people living with excess body weight, with or without type 2 diabetes. The purpose of the study is to investigate potential side effects and blood levels of NNC0519-0130, as well as changes in body weight, blood sugar levels, and heart activity. The study consists of two groups, with participants receiving either the study medicine (NNC0519-0130) or a placebo. Which treatment participants get is decided by chance and they can only participate in one group. Participants will be given the study medicine once weekly, and it should be taken on the same day each week. The treatment duration depends on the group participants are enrolled in, with the study lasting for 37 weeks for Group 1 and 34 weeks for Group 2.