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Type 1 DiabetesNCT05152121

Additional Insulin for High Fat/Protein in Type 1 Diabetes

A study testing Carb and fat counting in people with Type 1 Diabetes and Adolescent, run by Ege University at 1 site in Turkey (Türkiye).

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Aim: Dietary carbohydrate is the predominant macronutrient affecting postprandial blood glucose excursions, dietary fat and protein can also significantly impact the postprandial glycemic profile. Read more about this study

Who is it for?
Ages 9 to 18 years
Conditions the study is for
Type 1 Diabetes, Adolescent
What is being tested?
Carb and fat counting
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
20 participants
Where
1 siteTurkey (Türkiye)
Study dates
1 Jul 2017to 31 Dec 2019
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 9 to 18 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Who may be able to join

  • Children-adolescents with Type 1 DM between the ages of 9-18 and undergoing insulin infusion pump therapy followed by Ege University Faculty of Medicine, Department of Pediatric Endocrine.
  • Those with a body mass index between -2- + 2 SD

Who cannot join

  • Cases that do not accept to fill in the 'Informed Consent Form'
  • Cases with diseases accompanying T1DM (autoimmune diseases such as celiac, cystic fibrosis, etc.)
  • Body mass index <-2 SD and> +2 SD

Trial locations and contacts

1 site in 1 country.

Turkey (Türkiye)1 site
  • Ege University Faculty of Medicine Department of Pediatrics

    Izmir, 35100

Other trials in Turkey (Türkiye)

About this study

Official title: The Effect of Fat - Protein Counting on Glycemic Variability in Children and Adolescents With Type 1 Diabetes Mellitus

Aim: Dietary carbohydrate is the predominant macronutrient affecting postprandial blood glucose excursions, dietary fat and protein can also significantly impact the postprandial glycemic profile. The aim of this study is to compare the impact of additional dose of extended insulin bolus; using Pankowsko algorithm (PA) to usual standard carbohydrate counting (CC) on postprandial glucose excursions for high fat /high energy density mixed meal for 12 hours.

Methods: In this single-center, non-blinded, randomized, crossover study a high fat, high energy density test meal containing 80 gram carbohydrate (34%), 70 gram fat (66%) and 35 g protein (14%) was given using standard carbohydrate counting (CC) on the first test day and PA was used for the second test day for the same meal. Two methods were compared on postprandial early (0-120 min), late (120-720 min) and total (0-720 min) glucose response in 20 patients with type 1 diabetes mellitus (T1DM), aged 9-18 years on continuous subcutan insulin infusion (CSII) therapy using continuous glucose monitoring system (CGMS).

Read the detailed description

Children and adolescents with T1DM between the ages of 9-18 and undergoing insulin infusion pump therapy followed in Ege University Pediatric Endocrinology Department will be randomly selected regardless of metabolic control. The selection of the cases will be made from the beginning of the study as the first 30 patients who meet the research participation criteria and agree to participate in the study. Before the research starts, the cases will be told about the application of CGMS, their responsibilities in the research, and an appointment will be given for the insertion of CGMS and this procedure will be applied to all participants. On the day of the appointment, the participant will be put on CGMS, and as long as CGMS is attached, they will be asked to measure capillary blood glucose in their diaries and record them. The subjects will be checked whether they are within the target blood glucose values for 2 days before consuming the test meal and normoglycemia will be provided. On the first day of the study, a test meal with 80 g carbohydrate (29.3%), 70.2 g fat (57.9%), 34.7 g protein (12.7%), will be consumed in the evening meal and carbohydrate counting-normal bolus insulin will be given by administration. On the second day of the study, the additional insulin for fat and protein will be given as a dual wave bolus instead of the normal bolus for the test meal. Then, CGMS will be extracted from the cases, transferred to the computer, and analysis will be made by the researcher, taking into account the capillary blood glucose measurements in the diary.

Being tested
Carb and fat counting
Keywords
type 1 diabetes, dietary fat, high energy density meal, glycemic variability
Medical subject headings
Diabetes Mellitus, Type 1

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Carb and fat countingOther

    In the 7 days leading up to the study, participants were contacted to review blood glucose levels with CGMS, food and activity diary. basal rates and insulin carbohydrate ratio and sensitivity factor were changed according to the CGMS values and normoglycemia was achieved.In the study day same meals were served which included high fat, high energy density test meal containing 80 gram carbohydrate (34%), 70 gram fat (66%) and 35 g protein (14%).The participants had to have no glucose fluctuations 2 hours before study entry based on CGMS, no correction boluses for at least 4 hours before the test meal consumption and fasting glycemia in the range of 70-180 mg/dL on both study days.The participants received the test meal calculating insulin dose by CC on the first study day and calculating insulin dose by and fat/protein counting in the second study day. The test meal consumption was completed in 20 minutes under supervision by a caregiver and a dietician of the research team

Study groups in NCT05152121
Study groupRoleWhat they receive
carb countingOtherPatients using insulin infusion pumps will be placed CGMS for 2 days before starting the study to check whether they are within the target blood glucose levels and normoglycemia will be provided. The content of the first day of the study; The test meal, which is 80 g carbohydrate (29.3%), 70.2 g fat (57.9%), 34.7 g protein (12.7%), will be consumed in the evening meal and normal bolus insulin will be given according to carbohydrate counting. On the second day of the study, instead of the normal bolus for the test meal, the additional insulin for fat-protein by dual wave bolus that.The data obtained will be analyzed by evaluating the CGMS data of all patients by a pediatric endocrinologist experienced in diabetes, CGMS and insulin infusion pump therapy.
Receives: Other: Carb and fat counting

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. AUC

    The primary outcomes were glucose area under the curve (AUC) and % of time spent in normoglycemia according to CC; PA and modified PA algorithms.

    Measured: AUC was evaluated the day where only carbs were counted and the day were fat and proteins were counted

Secondary outcomes (1)
  1. hypoglycemia epizode

    The secondary outcomes were the number of hypoglycemic events over the study period based on capillary blood glucose measurements.

    Measured: Hypoglycemia was evaluated the day where only carbs were counted and the day were fat and proteins were counted

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Dec 2021
  2. Study start1 Jul 2017
  3. Primary completion30 Apr 2018
  4. Study completion31 Dec 2019

Resources

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
Supportive care
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05152121
Sponsor's protocol ID
16-12.1/44
Status last verified
Dec 2021
First submitted
29 Nov 2021
Last updated
30 Dec 2021
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Diabetes Control and Complications Trial Research Group; Nathan DM, Genuth S, Lachin J, Cleary P, Crofford O, Davis M, Rand L, Siebert C. The effect of intensive treatment of diabetes on the development and progression of long-term complications in insulin-dependent diabetes mellitus. N Engl J Med. 1993 Sep 30;329(14):977-86. doi: 10.1056/NEJM199309303291401.

    PubMed 8366922
  • Gingras V, Bonato L, Messier V, Roy-Fleming A, Smaoui MR, Ladouceur M, Rabasa-Lhoret R. Impact of macronutrient content of meals on postprandial glucose control in the context of closed-loop insulin delivery: A randomized cross-over study. Diabetes Obes Metab. 2018 Nov;20(11):2695-2699. doi: 10.1111/dom.13445. Epub 2018 Jul 18.

    PubMed 29931719
  • American Diabetes Association. 5. Facilitating Behavior Change and Well-being to Improve Health Outcomes: Standards of Medical Care in Diabetes-2021. Diabetes Care. 2021 Jan;44(Suppl 1):S53-S72. doi: 10.2337/dc21-S005.

    PubMed 33298416
  • Smart CE, Annan F, Higgins LA, Jelleryd E, Lopez M, Acerini CL. ISPAD Clinical Practice Consensus Guidelines 2018: Nutritional management in children and adolescents with diabetes. Pediatr Diabetes. 2018 Oct;19 Suppl 27:136-154. doi: 10.1111/pedi.12738. No abstract available.

    PubMed 30062718
  • Pankowska E, Szypowska A, Lipka M, Szpotanska M, Blazik M, Groele L. Application of novel dual wave meal bolus and its impact on glycated hemoglobin A1c level in children with type 1 diabetes. Pediatr Diabetes. 2009 Aug;10(5):298-303. doi: 10.1111/j.1399-5448.2008.00471.x. Epub 2008 Oct 20.

    PubMed 19175902
  • Danne T, Nimri R, Battelino T, Bergenstal RM, Close KL, DeVries JH, Garg S, Heinemann L, Hirsch I, Amiel SA, Beck R, Bosi E, Buckingham B, Cobelli C, Dassau E, Doyle FJ 3rd, Heller S, Hovorka R, Jia W, Jones T, Kordonouri O, Kovatchev B, Kowalski A, Laffel L, Maahs D, Murphy HR, Norgaard K, Parkin CG, Renard E, Saboo B, Scharf M, Tamborlane WV, Weinzimer SA, Phillip M. International Consensus on Use of Continuous Glucose Monitoring. Diabetes Care. 2017 Dec;40(12):1631-1640. doi: 10.2337/dc17-1600.

    PubMed 29162583
  • Bell KJ, Smart CE, Steil GM, Brand-Miller JC, King B, Wolpert HA. Impact of fat, protein, and glycemic index on postprandial glucose control in type 1 diabetes: implications for intensive diabetes management in the continuous glucose monitoring era. Diabetes Care. 2015 Jun;38(6):1008-15. doi: 10.2337/dc15-0100.

    PubMed 25998293
  • Jones SM, Quarry JL, Caldwell-McMillan M, Mauger DT, Gabbay RA. Optimal insulin pump dosing and postprandial glycemia following a pizza meal using the continuous glucose monitoring system. Diabetes Technol Ther. 2005 Apr;7(2):233-40. doi: 10.1089/dia.2005.7.233.

    PubMed 15857224
  • Wolever TM, Mullan YM. Sugars and fat have different effects on postprandial glucose responses in normal and type 1 diabetic subjects. Nutr Metab Cardiovasc Dis. 2011 Sep;21(9):719-25. doi: 10.1016/j.numecd.2010.12.005. Epub 2011 Feb 16.

    PubMed 21330118
  • Pankowska E, Blazik M, Groele L. Does the fat-protein meal increase postprandial glucose level in type 1 diabetes patients on insulin pump: the conclusion of a randomized study. Diabetes Technol Ther. 2012 Jan;14(1):16-22. doi: 10.1089/dia.2011.0083. Epub 2011 Oct 20.

    PubMed 22013887
  • Smart CE, Evans M, O'Connell SM, McElduff P, Lopez PE, Jones TW, Davis EA, King BR. Both dietary protein and fat increase postprandial glucose excursions in children with type 1 diabetes, and the effect is additive. Diabetes Care. 2013 Dec;36(12):3897-902. doi: 10.2337/dc13-1195. Epub 2013 Oct 29.

    PubMed 24170749
  • Wolpert HA, Atakov-Castillo A, Smith SA, Steil GM. Dietary fat acutely increases glucose concentrations and insulin requirements in patients with type 1 diabetes: implications for carbohydrate-based bolus dose calculation and intensive diabetes management. Diabetes Care. 2013 Apr;36(4):810-6. doi: 10.2337/dc12-0092. Epub 2012 Nov 27.

    PubMed 23193216
  • Paterson MA, Smart CEM, Lopez PE, Howley P, McElduff P, Attia J, Morbey C, King BR. Increasing the protein quantity in a meal results in dose-dependent effects on postprandial glucose levels in individuals with Type 1 diabetes mellitus. Diabet Med. 2017 Jun;34(6):851-854. doi: 10.1111/dme.13347. Epub 2017 Mar 19.

    PubMed 28257160
  • van der Hoogt M, van Dyk JC, Dolman RC, Pieters M. Protein and fat meal content increase insulin requirement in children with type 1 diabetes - Role of duration of diabetes. J Clin Transl Endocrinol. 2017 Oct 10;10:15-21. doi: 10.1016/j.jcte.2017.10.002. eCollection 2017 Dec.

    PubMed 29204367
  • Neu A, Behret F, Braun R, Herrlich S, Liebrich F, Loesch-Binder M, Schneider A, Schweizer R. Higher glucose concentrations following protein- and fat-rich meals - the Tuebingen Grill Study: a pilot study in adolescents with type 1 diabetes. Pediatr Diabetes. 2015 Dec;16(8):587-91. doi: 10.1111/pedi.12224. Epub 2014 Oct 20.

    PubMed 25330823

Questions about this trial

What is this clinical trial studying?

A study testing Carb and fat counting in people with Type 1 Diabetes and Adolescent, run by Ege University at 1 site in Turkey (Türkiye).

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 2 inclusion and 3 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 30 Dec 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Turkey (Türkiye). 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?

AUC (time frame: AUC was evaluated the day where only carbs were counted and the day were fat and proteins were counted). 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 NCT05152121, which also lists 19 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 30 Dec 2021.

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