A Research Study to Compare Two Types of Insulin, a New Weekly Insulin, Insulin Icodec and an Available Daily Insulin, Insulin Glargine, Both in Combination With Mealtime Insulin, in People With Type 2 Diabetes Who Use Daily Insulin and Mealtime Insulin (ONWARDS 4)
Summary
This study compares insulin icodec (a new insulin taken once a week) to insulin glargine (an insulin taken once daily which is already available on the market) in people with type 2 diabetes. The study will look at how well insulin icodec taken weekly controls blood sugar compared to insulin glargine taken daily. Participants will either get insulin icodec that participants will have to inject once a week on the same day of the week or insulin glargine that participants will have to inject once a day at the same time every day. Which treatment participants will get is decided by chance. Participants will also get a mealtime insulin.The insulin is injected with a needle in a skin fold in the thigh, upper arm or stomach. The study will last for about 8 months. participants will have 17 clinic visits and 13 phone calls with the study doctor.At 8 clinic visits participants will have blood samples taken. At 4 clinic visits participants cannot eat or drink (except for water) for 8 hours before the visit. Participants will be asked to wear a sensor that measures their blood sugar all the time in 3 periods for a total of 13 weeks (about 3 months) during the study. Women cannot take part if pregnant, breast-feeding or plan to become pregnant during the study period.
Timeline
- Start
- 2021-05-14
- Primary completion
- 2022-06-16
- Completion
- 2022-06-16
Publications
- Results Philis-Tsimikas A, Bajaj HS, Begtrup K, Cailleteau R, Gowda A, Lingvay I, Mathieu C, Russell-Jones D, Rosenstock J. Rationale and design of the phase 3a development programme (ONWARDS 1-6 trials) investigating once-weekly insulin icodec in diabetes. Diabetes Obes Metab. 2023 Feb;25(2):331-341. doi: 10.1111/dom.14871. Epub 2022 Oct 14.
- Results Mathieu C, Asbjornsdottir B, Bajaj HS, Lane W, Matos ALSA, Murthy S, Stachlewska K, Rosenstock J. Switching to once-weekly insulin icodec versus once-daily insulin glargine U100 in individuals with basal-bolus insulin-treated type 2 diabetes (ONWARDS 4): a phase 3a, randomised, open-label, multicentre, treat-to-target, non-inferiority trial. Lancet. 2023 Jun 10;401(10392):1929-1940. doi: 10.1016/S0140-6736(23)00520-2. Epub 2023 May 5.
- Mohan V, Kesavadev J, Murthy LS, Anil G, Chandrappa M, Kar S, Mishra S. Efficacy and Safety of Once-Weekly Insulin Icodec in Indian Participants with Diabetes: Results from ONWARDS 1, 4, and 6 Studies. Diabetes Ther. 2025 Nov;16(11):2193-2212. doi: 10.1007/s13300-025-01799-4. Epub 2025 Oct 6.
- Philis-Tsimikas A, Krogsdahl Bache J, Fu A, Kellerer M, Salvesen-Sykes K, Bain SC. Insights on Hospitalisations from the Phase 3a ONWARDS 1-6 Trials of Once-Weekly Insulin Icodec. Diabetes Ther. 2025 Aug;16(8):1615-1631. doi: 10.1007/s13300-025-01745-4. Epub 2025 Jun 4.
- Riddell MC, Heller S, Carstensen L, Rocha TMP, Kehlet Watt S, Woo VC. The effect of once-weekly insulin icodec vs once-daily basal insulin on physical activity-attributed hypoglycaemia in type 2 diabetes: a post hoc analysis of ONWARDS 1-5. Diabetologia. 2025 Jul;68(7):1416-1422. doi: 10.1007/s00125-025-06414-6. Epub 2025 Apr 5.
- Watada H, Asbjornsdottir B, Nishida T, Nishimura R, Yamamoto Y, Yamauchi T, Kadowaki T. Efficacy and safety of once-weekly insulin icodec versus once-daily basal insulin in Japanese individuals with type 2 diabetes: A subgroup analysis of the ONWARDS 1, 2 and 4 trials. Diabetes Obes Metab. 2024 Dec;26(12):5882-5895. doi: 10.1111/dom.15960. Epub 2024 Sep 30.
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Insulin icodec | Protein / enzyme biologic | — | Subcutaneous |
| Comparator | insulin glargine | Protein / enzyme biologic | — | Subcutaneous |
| Background | insulin aspart | Protein / enzyme biologic | — | Subcutaneous |