Diabetes MellitusDIaMonDNCT02282397
Multiple Daily Injections and Continuous Glucose Monitoring in Diabetes
A study testing Continuous Glucose Monitor in people with Diabetes Mellitus, run by DexCom, Inc. at 30 sites in 2 countries.
Trial summary
Evaluate if addition and use of real time continuous glucose monitoring (RT-CGM) improves glycemic outcome of patients using multiple daily injections (MDI) and self monitoring blood glucose (SMBG) testing, who are not at target glycemic control. Read more about this study
- Who is it for?
- Ages 25 years and older
- Conditions the study is for
- Diabetes Mellitus
- What is being tested?
- Continuous Glucose Monitor
- Type of treatment
- Injection or infusion, Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 316 participants
- Where
- 30 sitesin 2 countries
- Study dates
- Sep 2014to Nov 2016
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 25 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age 25 years or older
- Diagnosis of Type 1 diabetes mellitus or insulin-requiring Type 2 diabetes mellitus
- Followed regularly by a physician or diabetes educator
- Using multiple daily injections
- stable control of diabetes
- willing to wear a device such as pump or continuous glucose monitor
Who cannot join
- recent or planned use of non-insulin injectable hypoglycemic agents
- Pregnancy or planning to become pregnant during the study
- Medical conditions that make it inappropriate or unsafe to target an A1C of <7%
- Renal disease with Glomerular Filtration Rate <45
- Extensive skin changes/disease that precludes wearing the sensor on normal skin
- Known allergy to medical-grade adhesives
- Recent hospitalization or emergency room visit in the 6 months prior to screening resulting in primary diagnosis of uncontrolled diabetes
Trial locations and contacts
30 sites in 2 countries.
30 sites in 2 countries
United States27 sites
Albany Medical College
Albany, New York, 12206
Amarillo Medical Specialists, LLP
Amarillo, Texas, 79106
Mountain Diabetes and Endocrine Center
Asheville, North Carolina, 28803
Laureate Medical Group at Northside, LLC
Atlanta, Georgia, 30308
Atlanta Diabetes Associates
Atlanta, Georgia, 30318
Joslin Diabetes Center
Boston, Massachusetts, 02215
Columbus Regional Research Institute
Columbus, Georgia, 31904
Research Institute of Dallas
Dallas, Texas, 75231
Iowa Diabetes & Endocrinology Research Center
Des Moines, Iowa, 50314
Henry Ford Health System
Detroit, Michigan, 48202
Marin Endocrine Care & Research
Greenbrae, California, 94904
Rocky Mountain Diabetes & Osteoporosis Center
Idaho Falls, Idaho, 83404
East Coast Institute for Research, LLC
Jacksonville, Florida, 32204
East Coast Institute for Research, LLC
Jacksonville, Florida, 32216
Accent Clinical Research
Las Vegas, Nevada, 89106
Physicians Research Associates, LLC
Lawrenceville, Georgia, 30046
International Diabetes Center
Minneapolis, Minnesota, 55416
Advanced Research Associates
Ogden, Utah, 84405
Diabetes & Endocrine Associates, PC
Omaha, Nebraska, 68114
Legacy Research Institute
Portland, Oregon, 97225
Oregon Health & Science University
Portland, Oregon, 97239
Granger Medical Clinic
Riverton, Utah, 84065
Endocrine Research Solutions
Roswell, Georgia, 30076
Diabetes and Glandular Disease
San Antonio, Texas, 78229
Consano Clinical Research
San Antonio, Texas, 78258
Washington University in St. Louis
St Louis, Missouri, 63110
Coastal Metabolic Research Centre
Ventura, California, 93003
Canada3 sites
LMC Clinical Research
Barrie, Ontario, L4M 7G1
LMC Clinical Research
Thornhill, Ontario, L4J 8L7
LMC Clinical Research
Toronto, Ontario, M4G 3E8
About this study
Evaluate if addition and use of real time continuous glucose monitoring (RT-CGM) improves glycemic outcome of patients using multiple daily injections (MDI) and self monitoring blood glucose (SMBG) testing, who are not at target glycemic control.
Read the detailed description
The study design includes two cohorts that will be treated separately. Phase 1 will include two diabetes cohorts (Type 1 diabetes mellitus and Type 2 diabetes mellitus) who will be randomized independently into two groups, Group 1-CGM and Group 2-SMBG.
The Group-1 CGM cohort who have Type 1 diabetes mellitus will be eligible for Phase 2. Phase 2 will include a separate independent randomization of either MDI therapy (Group 1a- CGM/MDI) or CSII therapy (Group 1b-CGM/CSII).
Additional assessments will be made to evaluate the incremental benefits of changing the insulin delivery method from MDI to CSII in patients already using CGM.
Cost effectiveness and quality of life will be measured between the two groups in each phase.
- Conditions
- Diabetes Mellitus
- Being tested
- Continuous Glucose Monitor
- Keywords
- Diabetes Mellitus
- Medical subject headings
- Diabetes Mellitus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Continuous Glucose MonitorDevice
Also called CGM, RT-CGM
RT-CGM are adjunctive devices with glucose trend graphs and user-configurable low and high glucose alerts.
| Study group | Role | What they receive |
|---|---|---|
| Phase 1: SMBG | No intervention | Type 1 or Type 2 diabetes mellitus subjects using SMBG testing and usual care for diabetes management. No intervention to be administered |
| Phase 1: CGM | Other | Type 1 or Type 2 diabetes mellitus subjects using RT-CGM and SMBG testing for diabetes management. RT-CGM (Continuous Glucose Monitoring) is the intervention. Receives: Device: Continuous Glucose Monitor |
| Phase 2: CGM/MDI | No intervention | Type 1 Diabetes Mellitus subjects using RT-CGM and injections for diabetes management. |
| Phase 2: CGM/CSII | No intervention | Type 1 Diabetes Mellitus subjects using RT-CGM and CSII for diabetes management. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Phase 1 (T1DM) - A1C
Change in A1C from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - A1C
Change in A1C from baseline to 24 weeks
Measured: 6 months
Phase 2 (T1DM)
Change in % time in range 70-180 mg/dL from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Secondary outcomes (77)
Phase 1 (T1DM) - A1C Outcomes
% of subjects with A1C less than 7%
Measured: 6 months
Phase 1 (T1DM) - A1C Outcomes
% of subjects with A1C less than 7.5%
Measured: 6 months
Phase 1 (T1DM) - A1C Outcomes
% of subjects with a relative reduction in A1C greater than or equal to 10%
Measured: 6 months
Phase 1 (T1DM) - A1C Outcomes
% of subjects with a reduction in A1C greater than or equal to 1%
Measured: 6 months
Phase 1 (T1DM) - A1C Outcomes
% of subjects with a reduction in A1C greater than or equal to 1% or A1C less than 7%
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
Mean glucose (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
Glucose variability (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time in range 70-180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time less than 70 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time less than 60 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time less than 50 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time greater than 180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time greater than 250 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - CGM Outcomes
% time greater than 300 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T1DM) - Hypoglycemia Awareness
Change in Clarke Hypoglycemia Unawareness score from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - SMBG Outcome
Change in SMBG frequency from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - QoL Outcomes
Quality of life changes from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - Cost Effectiveness
Cost effectiveness measured by the incremental cost-effectiveness ratio (ICER)
Measured: 6 months
Phase 1 (T1DM) - Adverse Events
Change in the number of SH events from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - Adverse Events
Change in the number of DKA events from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - Body Weight
Change in body weight from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - Insulin Use Outcomes
Change in total daily insulin from baseline to 24 weeks
Measured: 6 months
Phase 1 (T1DM) - Insulin Use Outcomes
Basal to bolus insulin ratio
Measured: 6 months
Phase 1 (T1DM) - Insulin Use Outcomes
Change in the number of boluses/day from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - A1C Outcomes
% of subjects with A1C less than 7%
Measured: 6 months
Phase 1 (T2DM) - A1C Outcomes
% of subjects with A1C less than 7.5%
Measured: 6 months
Phase 1 (T2DM) - A1C Outcomes
% of subjects with a relative reduction in A1C greater than or equal to 10%
Measured: 6 months
Phase 1 (T2DM) - A1C Outcomes
% of subjects with a reduction in A1C greater than or equal to 1% or A1C less than 7%
Measured: 6 months
Phase 1 (T2DM) - A1C Outcomes
% of subjects with a reduction in A1C greater than or equal to 1%
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
Mean glucose (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
Glucose variability (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time in range 70-180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time less than 70 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time less than 60 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time less than 50 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time greater than 180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time greater than 250 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
% time greater than 300 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
Area above curve 70 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - CGM Outcomes
Area under curve 180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 1 (T2DM) - Hypoglycemia Awareness
Change in Clarke Hypoglycemia Unawareness score from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - SMBG
Change in SMBG frequency from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - QoL Outcomes
Quality of life changes from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - Cost Effectiveness
Cost effectiveness measured by the incremental cost-effectiveness ratio (ICER)
Measured: 6 months
Phase 1 (T2DM) - Adverse Events
Change in the number of SH Events from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - Adverse Events
Change in the number of DKA Events from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - Body Weight
Change in body weight from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - Insulin Use Outcomes
Change in total daily insulin from baseline to 24 weeks
Measured: 6 months
Phase 1 (T2DM) - Insulin Use Outcomes
Basal to bolus insulin ratio
Measured: 6 months
Phase 1 (T2DM) - Insulin Use Outcomes
Change in the number of boluses/day from baseline to 24 weeks
Measured: 6 months
Phase 2 (T1DM) - A1C Outcomes
Change in A1C from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - A1C Outcomes
% of subjects with A1C less than 7%
Measured: 6 months
Phase 2 (T1DM) - A1C Outcomes
% of subjects with A1C less than 7.5%
Measured: 6 months
Phase 2 (T1DM) - A1C Outcomes
% of subjects with a relative reduction in A1C greater than or equal to 10%
Measured: 6 months
Phase 2 (T1DM) - A1C Outcomes
% of subjects with a reduction in A1C greater than or equal to 1%
Measured: 6 months
Phase 2 (T1DM) - A1C Outcomes
% of subjects with a reduction in A1C greater than or equal to 1% or A1C less than 7%
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
Mean glucose (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
Glucose variability (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
% time less than 70 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
% time less than 60 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
% time less than 50 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
% time greater than 180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
% time greater than 250 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
% time greater than 300 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
Area above curve 70 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - CGM Outcomes
Area above curve 180 mg/dL (overall, daytime, and nighttime separately)
Measured: 6 months
Phase 2 (T1DM) - Hypoglycemia Awareness
Change in Clarke Hypoglycemia Unawareness score from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - CGM Use
Change in frequency of CGM use from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - SMBG
Change in SMBG frequency from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - QoL Outcomes
Quality of life changes from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - Cost Effectiveness
Cost effectiveness measured by the incremental cost-effectiveness ratio (ICER)
Measured: 6 months
Phase 2 (T1DM) - Adverse Events
Change in the number of SH Events from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - Adverse Events
Change in the number of DKA Events from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - Body Weight
Change in body weight from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - Insulin Use Outcomes
Change in total daily insulin from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Phase 2 (T1DM) - Insulin Use Outcomes
Basal to bolus insulin ratio
Measured: 6 months
Phase 2 (T1DM) - Insulin Use Outcomes
Change in the number of boluses/day from Phase 2 baseline to Phase 2 28 weeks
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Nov 2014 (estimated)
- Study startSep 2014
- Primary completionNov 2016
- Study completionNov 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Diabetes MellitusStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 316 participants (actual)
Sponsor and investigators
- Lead sponsor
- DexCom, Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Jaeb Center for Health Research
- Responsible party
- Sponsor
- Investigators
- David Price, MD, Study director, DexCom, Inc.
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02282397
- Sponsor's protocol ID
- PTL-901148
- Acronym
- DIaMonD
- Status last verified
- Feb 2017
- First submitted
- 29 Oct 2014
- Last updated
- 15 May 2017
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Hermanns N, Ehrmann D, Heinemann L, Freckmann G, Waldenmaier D, Calhoun P. Real-Time Continuous Glucose Monitoring Can Predict Severe Hypoglycemia in People with Type 1 Diabetes: Combined Analysis of the HypoDE and DIAMOND Trials. Diabetes Technol Ther. 2022 Sep;24(9):603-610. doi: 10.1089/dia.2022.0130. Epub 2022 Jun 10.
PubMed 35604794Puhr S, Welsh JB, Bauza CE, Walker TC. Patients with Type 2 Diabetes and Residual Insulin Secretory Capacity Realize Glycemic Benefits from Real-Time Continuous Glucose Monitoring. J Diabetes Sci Technol. 2021 Jul;15(4):965-967. doi: 10.1177/19322968211007880. Epub 2021 Apr 15. No abstract available.
PubMed 33855888Calhoun P, Price D, Beck RW. Glycemic Improvement Using Continuous Glucose Monitoring by Baseline Time in Range: Subgroup Analyses from the DIAMOND Type 1 Diabetes Study. Diabetes Technol Ther. 2021 Mar;23(3):230-233. doi: 10.1089/dia.2020.0471. Epub 2020 Oct 20.
PubMed 33006904Puhr S, Calhoun P, Welsh JB, Walker TC. The Effect of Reduced Self-Monitored Blood Glucose Testing After Adoption of Continuous Glucose Monitoring on Hemoglobin A1c and Time in Range. Diabetes Technol Ther. 2018 Aug;20(8):557-560. doi: 10.1089/dia.2018.0134. Epub 2018 Jul 23.
PubMed 30036082Beck RW, Riddlesworth TD, Ruedy K, Ahmann A, Haller S, Kruger D, McGill JB, Polonsky W, Price D, Aronoff S, Aronson R, Toschi E, Kollman C, Bergenstal R; DIAMOND Study Group. Continuous Glucose Monitoring Versus Usual Care in Patients With Type 2 Diabetes Receiving Multiple Daily Insulin Injections: A Randomized Trial. Ann Intern Med. 2017 Sep 19;167(6):365-374. doi: 10.7326/M16-2855. Epub 2017 Aug 22.
PubMed 28828487Beck RW, Riddlesworth TD, Ruedy KJ, Kollman C, Ahmann AJ, Bergenstal RM, Bhargava A, Bode BW, Haller S, Kruger DF, McGill JB, Polonsky W, Price D, Toschi E; DIAMOND Study Group. Effect of initiating use of an insulin pump in adults with type 1 diabetes using multiple daily insulin injections and continuous glucose monitoring (DIAMOND): a multicentre, randomised controlled trial. Lancet Diabetes Endocrinol. 2017 Sep;5(9):700-708. doi: 10.1016/S2213-8587(17)30217-6. Epub 2017 Jul 12.
PubMed 28711468Riddlesworth T, Price D, Cohen N, Beck RW. Hypoglycemic Event Frequency and the Effect of Continuous Glucose Monitoring in Adults with Type 1 Diabetes Using Multiple Daily Insulin Injections. Diabetes Ther. 2017 Aug;8(4):947-951. doi: 10.1007/s13300-017-0281-4. Epub 2017 Jun 14.
PubMed 28616804Polonsky WH, Hessler D, Ruedy KJ, Beck RW; DIAMOND Study Group. The Impact of Continuous Glucose Monitoring on Markers of Quality of Life in Adults With Type 1 Diabetes: Further Findings From the DIAMOND Randomized Clinical Trial. Diabetes Care. 2017 Jun;40(6):736-741. doi: 10.2337/dc17-0133. Epub 2017 Apr 7.
PubMed 28389582Beck RW, Riddlesworth T, Ruedy K, Ahmann A, Bergenstal R, Haller S, Kollman C, Kruger D, McGill JB, Polonsky W, Toschi E, Wolpert H, Price D; DIAMOND Study Group. Effect of Continuous Glucose Monitoring on Glycemic Control in Adults With Type 1 Diabetes Using Insulin Injections: The DIAMOND Randomized Clinical Trial. JAMA. 2017 Jan 24;317(4):371-378. doi: 10.1001/jama.2016.19975.
PubMed 28118453
Study at a glance
From the registry record, last updated by the sponsor on 15 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Multiple Daily Injections and Continuous Glucose Monitoring in Diabetes
- ClinicalTrials.gov ID
- NCT02282397
- Acronym / sponsor ID
- DIaMonD / PTL-901148
- Conditions
- Diabetes Mellitus
- Keywords
- Diabetes Mellitus
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 316 participants (actual)
- Lead sponsor
- DexCom, Inc.Industry (pharma, biotech, devices)
- Collaborators
- Jaeb Center for Health Research
- Study start
- Sep 2014
- Primary completion
- Nov 2016 (actual)
- Study completion
- Nov 2016 (actual)
- First posted
- 4 Nov 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Evaluate if addition and use of real time continuous glucose monitoring (RT-CGM) improves glycemic outcome of patients using multiple daily injections (MDI) and self monitoring blood glucose (SMBG) testing, who are not at target glycemic control.
Detailed description
The study design includes two cohorts that will be treated separately. Phase 1 will include two diabetes cohorts (Type 1 diabetes mellitus and Type 2 diabetes mellitus) who will be randomized independently into two groups, Group 1-CGM and Group 2-SMBG.
The Group-1 CGM cohort who have Type 1 diabetes mellitus will be eligible for Phase 2. Phase 2 will include a separate independent randomization of either MDI therapy (Group 1a- CGM/MDI) or CSII therapy (Group 1b-CGM/CSII).
Additional assessments will be made to evaluate the incremental benefits of changing the insulin delivery method from MDI to CSII in patients already using CGM.
Cost effectiveness and quality of life will be measured between the two groups in each phase.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Phase 1: SMBG | No intervention | –Type 1 or Type 2 diabetes mellitus subjects using SMBG testing and usual care for diabetes management. No intervention to be administered |
| Phase 1: CGM | Other | Device: Continuous Glucose MonitorType 1 or Type 2 diabetes mellitus subjects using RT-CGM and SMBG testing for diabetes management. RT-CGM (Continuous Glucose Monitoring) is the intervention. |
| Phase 2: CGM/MDI | No intervention | –Type 1 Diabetes Mellitus subjects using RT-CGM and injections for diabetes management. |
| Phase 2: CGM/CSII | No intervention | –Type 1 Diabetes Mellitus subjects using RT-CGM and CSII for diabetes management. |
Who may qualify
- Ages
- 25 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Age 25 years or older
- Diagnosis of Type 1 diabetes mellitus or insulin-requiring Type 2 diabetes mellitus
- Followed regularly by a physician or diabetes educator
- Using multiple daily injections
- stable control of diabetes
Key exclusion criteria (7 listed)
- recent or planned use of non-insulin injectable hypoglycemic agents
- Pregnancy or planning to become pregnant during the study
- Medical conditions that make it inappropriate or unsafe to target an A1C of <7%
- Renal disease with Glomerular Filtration Rate <45
- Extensive skin changes/disease that precludes wearing the sensor on normal skin
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Continuous Glucose MonitorAlso: CGM, RT-CGMRT-CGM are adjunctive devices with glucose trend graphs and user-configurable low and high glucose alerts. | Device | Phase 1: CGM |
Primary outcome
Phase 1 (T1DM) - A1C
Time frame: 6 months
Change in A1C from baseline to 24 weeks
Phase 1 (T2DM) - A1C
Time frame: 6 months
Change in A1C from baseline to 24 weeks
Phase 2 (T1DM)
Time frame: 6 months
Change in % time in range 70-180 mg/dL from Phase 2 baseline to Phase 2 28 weeks
77 secondary outcomes
Phase 1 (T1DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T1DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T1DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T1DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T1DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T1DM) - Hypoglycemia Awareness
Time frame: 6 months
Phase 1 (T1DM) - SMBG Outcome
Time frame: 6 months
Phase 1 (T1DM) - QoL Outcomes
Time frame: 6 months
Phase 1 (T1DM) - Cost Effectiveness
Time frame: 6 months
Phase 1 (T1DM) - Adverse Events
Time frame: 6 months
Phase 1 (T1DM) - Adverse Events
Time frame: 6 months
Phase 1 (T1DM) - Body Weight
Time frame: 6 months
Phase 1 (T1DM) - Insulin Use Outcomes
Time frame: 6 months
Phase 1 (T1DM) - Insulin Use Outcomes
Time frame: 6 months
Phase 1 (T1DM) - Insulin Use Outcomes
Time frame: 6 months
Phase 1 (T2DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T2DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T2DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T2DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T2DM) - A1C Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Phase 1 (T2DM) - CGM Outcomes
Time frame: 6 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 May 2017.
- Derived from this study: PubMed 35604794Hermanns N, Ehrmann D, Heinemann L, Freckmann G, Waldenmaier D, Calhoun P. Real-Time Continuous Glucose Monitoring Can Predict Severe Hypoglycemia in People with Type 1 Diabetes: Combined Analysis of the HypoDE and DIAMOND Trials. Diabetes Technol Ther. 2022 Sep;24(9):603-610. doi: 10.1089/dia.2022.0130. Epub 2022 Jun 10.
- Derived from this study: PubMed 33855888Puhr S, Welsh JB, Bauza CE, Walker TC. Patients with Type 2 Diabetes and Residual Insulin Secretory Capacity Realize Glycemic Benefits from Real-Time Continuous Glucose Monitoring. J Diabetes Sci Technol. 2021 Jul;15(4):965-967. doi: 10.1177/19322968211007880. Epub 2021 Apr 15. No abstract available.
- Derived from this study: PubMed 33006904Calhoun P, Price D, Beck RW. Glycemic Improvement Using Continuous Glucose Monitoring by Baseline Time in Range: Subgroup Analyses from the DIAMOND Type 1 Diabetes Study. Diabetes Technol Ther. 2021 Mar;23(3):230-233. doi: 10.1089/dia.2020.0471. Epub 2020 Oct 20.
- Derived from this study: PubMed 30036082Puhr S, Calhoun P, Welsh JB, Walker TC. The Effect of Reduced Self-Monitored Blood Glucose Testing After Adoption of Continuous Glucose Monitoring on Hemoglobin A1c and Time in Range. Diabetes Technol Ther. 2018 Aug;20(8):557-560. doi: 10.1089/dia.2018.0134. Epub 2018 Jul 23.
- Derived from this study: PubMed 28828487Beck RW, Riddlesworth TD, Ruedy K, Ahmann A, Haller S, Kruger D, McGill JB, Polonsky W, Price D, Aronoff S, Aronson R, Toschi E, Kollman C, Bergenstal R; DIAMOND Study Group. Continuous Glucose Monitoring Versus Usual Care in Patients With Type 2 Diabetes Receiving Multiple Daily Insulin Injections: A Randomized Trial. Ann Intern Med. 2017 Sep 19;167(6):365-374. doi: 10.7326/M16-2855. Epub 2017 Aug 22.
- Derived from this study: PubMed 28711468Beck RW, Riddlesworth TD, Ruedy KJ, Kollman C, Ahmann AJ, Bergenstal RM, Bhargava A, Bode BW, Haller S, Kruger DF, McGill JB, Polonsky W, Price D, Toschi E; DIAMOND Study Group. Effect of initiating use of an insulin pump in adults with type 1 diabetes using multiple daily insulin injections and continuous glucose monitoring (DIAMOND): a multicentre, randomised controlled trial. Lancet Diabetes Endocrinol. 2017 Sep;5(9):700-708. doi: 10.1016/S2213-8587(17)30217-6. Epub 2017 Jul 12.
- Derived from this study: PubMed 28616804Riddlesworth T, Price D, Cohen N, Beck RW. Hypoglycemic Event Frequency and the Effect of Continuous Glucose Monitoring in Adults with Type 1 Diabetes Using Multiple Daily Insulin Injections. Diabetes Ther. 2017 Aug;8(4):947-951. doi: 10.1007/s13300-017-0281-4. Epub 2017 Jun 14.
- Derived from this study: PubMed 28389582Polonsky WH, Hessler D, Ruedy KJ, Beck RW; DIAMOND Study Group. The Impact of Continuous Glucose Monitoring on Markers of Quality of Life in Adults With Type 1 Diabetes: Further Findings From the DIAMOND Randomized Clinical Trial. Diabetes Care. 2017 Jun;40(6):736-741. doi: 10.2337/dc17-0133. Epub 2017 Apr 7.
- Derived from this study: PubMed 28118453Beck RW, Riddlesworth T, Ruedy K, Ahmann A, Bergenstal R, Haller S, Kollman C, Kruger D, McGill JB, Polonsky W, Toschi E, Wolpert H, Price D; DIAMOND Study Group. Effect of Continuous Glucose Monitoring on Glycemic Control in Adults With Type 1 Diabetes Using Insulin Injections: The DIAMOND Randomized Clinical Trial. JAMA. 2017 Jan 24;317(4):371-378. doi: 10.1001/jama.2016.19975.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
David Price, MD study director
DexCom, Inc.
30 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Continuous Glucose Monitor in people with Diabetes Mellitus, run by DexCom, Inc. at 30 sites in 2 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 15 May 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 30 sites in United States, Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Phase 1 (T1DM) - A1C (time frame: 6 months). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02282397, which also lists 9 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 May 2017.