A Systematic Review of Commercial Hybrid Closed-Loop Automated Insulin Delivery Systems
Open accessAbstract
INTRODUCTION: Several different forms of automated insulin delivery systems (AID systems) have recently been developed and are now licensed for type 1 diabetes (T1D). We undertook a systematic review of reported trials and real-world studies for commercial hybrid closed-loop (HCL) systems. METHODS: Pivotal, phase III and real-world studies using commercial HCL systems that are currently approved for use in type 1 diabetes were reviewed with a devised protocol using the Medline database. RESULTS: Fifty-nine studies were included in the systematic review (19 for 670G; 8 for 780G; 11 for Control-IQ; 14 for CamAPS FX; 4 for Diabeloop; and 3 for Omnipod 5). Twenty were real-world studies, and 39 were trials or sub-analyses. Twenty-three studies, including 17 additional studies, related to psychosocial outcomes and were analysed separately. CONCLUSIONS: These studies highlighted that HCL systems improve time In range (TIR) and arouse minimal concerns around severe hypoglycaemia. HCL systems are an effective and safe option for improving diabetes care. Real-world comparisons between systems and their effects on psychological outcomes require further study.
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Automated insulin delivery systems enhance glycemic control and mitigate hypoglycemia risk in individuals with type 1 diabetes.
“Evidence from randomized controlled trials and real-world observational studies has demonstrated that these advanced systems enhance glycemic control, mitigate the risk of hypoglycemia, and improve the quality of life in individuals with type 1 diabetes, including adults, adolescents, and pediatric populations.2”
From Clinical utility of the twiist Automated Insulin Delivery System: first study with twiist (2026) · cites this paper as [2]
The Introduction (page unavailable) reports improved glycaemic measures with commercial hybrid closed-loop systems. It says trials found no increase in hypoglycaemia and that some studies found a reduction; the Conclusions (page unavailable) likewise report no increase in severe hypoglycaemia. Thus the review supports improved glycaemic control, but not a general reduction in hypoglycaemia risk across these systems. (LLM, conf=0.85)
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9. Pharmacologic Approaches to Glycemic Treatment: Standards of Care in Diabetes—2025
American Diabetes Association Professional Practice Committee, ElSayed, N. A., McCoy, R. G., Aleppo, G., Bajaj, M., Balapattabi, K., Beverly, E. A., Briggs Early, K., Bruemmer, D., Echouffo-Tcheugui, J. B., et al. (2025) · Diabetes Care · doi:10.2337/dc25-s009 · Cited by 728 · see citing works
Real-world evidence of automated insulin delivery system use
Considine, E. G., & Sherr, J. L. (2024) · Diabetes Technology & Therapeutics · doi:10.1089/dia.2023.0442 · Cited by 59 · see citing works
Tumminia, A., Santoro, G. M., Oteri, V., Galeano, F., Baratta, R., Gullo, D., Frittitta, L., Sciacca, L., Moli, R. L., Piticchio, T., et al. (2025) · Diabetes Research and Clinical Practice · doi:10.1016/j.diabres.2025.112173 · Cited by 9 · see citing works
Clinical utility of the twiist Automated Insulin Delivery System: first study with twiist
Ruiz, A., Mcdonough, A., Snow, K., Bode, B., & Mitri, J. (2026) · BMJ Open Diabetes Research & Care · doi:10.1136/bmjdrc-2026-006307
- Authors
- Peacock, S., Frizelle, I., & Hussain, S.
- Affiliations
- St Thomas' Hospital (GB)
- Corresponding author
- Hussain, Sufyan
- Venue
- Diabetes Therapy
- Published
- 2023-04-05
- Volume
- 14
- Issue
- 5
- Pages
- 839-855
- ISSN
- 1869-6953 (ISSN-L)
- 1869-6961
- PMC
- PMC10126177
- OpenAlex
- W4362601771
- Cited by
- 122
- References
- 17
- Citations by year
- 2026: 37 · 2025: 49 · 2024: 32 · 2023: 4
- FWCI
- 4.40
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Diabetes Therapy (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Funders
- Medical Research Council (MR/W030004/1)
- Topics
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
- Keywords
- hybrid closed-loop system, artificial pancreas, type 1 diabetes, time in range, hypoglycemia, psychosocial outcomes, real-world evidence, Control-IQ, CamAPS FX, Omnipod 5
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