A Research Study to Compare a New Weekly Insulin, Insulin Icodec Used With DoseGuide App, and Daily Insulins in People With Type 2 Diabetes Who Have Not Used Insulin Before

Inclusion criteria

• Informed consent obtained before any trial-related activities. Trial-related activities are any procedures that are carried out as part of the trial, including activities to determine suitability for the trial.
• Male or female.
• Age above or equal to 18 years at the time of signing informed consent.
• Diagnosed with T2D greater than or equal to 180 days prior to the day of screening.
• HbA1c above 7.0% (53 mmol/mol) as measured by central lab.
• Insulin naïve. However, short term insulin treatment for a maximum of 14 days prior to the day of screening is allowed, as is prior insulin treatment for gestational diabetes.
• Stable daily dose(s) greater than or equal to 90 days prior to the day of screening of any of the following antidiabetic drug(s) or combination regimen(s): a .Any metformin formulations greater than or equal to 1500 mg or maximum tolerated or effective dose. b .Any metformin combination formulations greater than or equal to 1500 mg or maximum tolerated or effective dose. c. Any of the following non-insulin antidiabetic drug classes including combinations (greater than or equal to half of the maximum approved dose according to local label or maximum tolerated or effective dose):i). Sulfonylureas ii). Meglitinides (glinides) iii). DPP-4 inhibitors iv. SGLT2 inhibitors v). Thiazolidinediones vi). Alpha-glucosidase inhibitors vii). Oral combination products (for the allowed individual Oral Antidiabetic Drugs (OADs)) viii). Oral or injectable GLP-1-receptor agonists.
• Intensification with insulin is indicated to achieve glycaemic target (4.4-7.2 mmol/L, 80-130 mg/dL) at the discretion of the treating investigator.

Exclusion criteria

• Known or suspected hypersensitivity to trial product(s) or related products.
• Previous participation in this trial. Participation is defined as signed informed consent.
• Female who is pregnant, breast-feeding or intends to become pregnant or is of child-bearing potential and not using an adequate contraceptive method (adequate contraceptive measures as required by local regulation or practice).
• Participation in any clinical trial of an approved or non-approved investigational medicinal product within 30 days before screening. (Simultaneous participation in a trial with the primary objective of evaluating an approved or non-approved investigational medicinal product for prevention or treatment of COVID-19 disease or postinfectious conditions is allowed if the last dose of the investigational medicinal product has been received more than 30 days before screening)
• Any disorder which in the investigator's opinion might jeopardise subject's safety.