A Research Study Looking at How Faster Aspart Injected in Double Concentration Works in the Body of People With Type 1 Diabetes Mellitus

A Trial Investigating the Pharmacokinetic Properties of Five Formulations of Fast-acting Insulin Aspart 200 U/mL in Subjects With Type 1 Diabetes Mellitus

This study is looking at how five different formulations of faster aspart 200 U/mL reach and stay in the blood after injection. The purpose is to find a formulation that behaves similarly to the reference product called faster aspart 100 U/mL (marketed as Fiasp®). The participant will get all five formulations and the reference product. The order in which the participant gets them is decided by chance. The participant will get each medicine once during the study meaning that the participant will get a total of six injections with study medicine. The medicine will be injected under the skin in the stomach. The study will last for about 2 to 21 weeks depending on individual visit schedule. The participant will have nine clinic visits with the study doctor (including the one in which the participant give consent).

Inclusion Criteria:

• Male or female, aged 18-64 years (both inclusive) at the time of signing informed consent
• Diagnosed with type 1 diabetes mellitus greater than or equal to 1 year prior to the day of screening
• Treated with multiple daily insulin injections or continuous subcutaneous insulin infusion greater than or equal to 1 year prior to the day of screening

Exclusion Criteria:

• Participation in any clinical trial of an approved or non-approved investigational medicinal product within 90 days before screening in this trial
• Blood donation, plasma donation or blood draw, defined as any of the below: In excess of 400 mL within the past 90 days prior to the day of screening OR In excess of 50 mL within the past 30 days prior to the day of screening
• Use of tobacco and nicotine products, defined as any of the below: Smoking more than 1 cigarette or the equivalent per day OR Not able or willing to refrain from smoking and use of nicotine substitute products during the in-house periods