Evidence map›Paper›PMID 38743306›Full record

ArticleDiabetes therapy : research, treatment and education of diabetes and related disorders2024

Changes in Basal and Bolus Insulin Requirements with Tirzepatide as an Adjunctive Therapy in Adults with Type 1 Diabetes Using Tandem Control-IQ.

Kagan E Karakus, Matthew P Klein, Halis K Akturk, Viral N Shah

Registry-linked trialAbstract read
In one paragraph

Article in Diabetes therapy : research, treatment and education of diabetes and related disorders, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07284511 (Fully Closed-Loop Glucose Control in Adults With Type 1 Diabetes Using Tirzepatide), which is not on this map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07284511 phase2 / phase3recruitingstarted 2026, after this paper: background citation

Fully Closed-Loop Glucose Control in Adults With Type 1 Diabetes Using Tirzepatide: a Randomized, Multi-center, Open-label, Non-inferiority, Parallel Trial

Ran2026Enrolled105Registered outcomes35Posted comparisons0ConditionsT1D, T1DM, T1DM - Type 1 Diabetes Mellitus, Type 1 DiabetesArmsCarbohydrate Counting, No Meal Announcement, Tandem Control-IQ Automated Insulin Delivery System (with Dexcom G7 CGM), Tirzepatide
Open the trial in the graph
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Obesity in Adults with Type 1 Diabetes Mellitus.Journal of obesity & metabolic syndrome · 2026
    Review
  4. Review
  5. Registration and Real-Life Studies on Automated Insulin Delivery Systems.Journal of diabetes science and technology · 2025
    Review
  6. Article
  7. Review
  8. Managing obesity in adults with type 1 diabetes.Diabetes research and clinical practice · 2025
    Review
  9. Review
  10. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kagan E KarakusBarbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA.
Matthew P KleinBarbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA.
Halis K AkturkBarbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA.
Viral N ShahBarbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA. shahvi@iu.edu.ORCID http://orcid.org/0000-0002-3827-7107

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThis study was aimed at investigating changes in insulin requirements and glycemic outcomes in adults with type 1 diabetes (T1D) using Control IQ (Tandem Diabetes) automated insulin delivery system (AID) over 8 months of tirzepatide treatment.

methodsIn this single-center, observational study, we collected demographic, A1c, weight, sensor glucose, and insulin dose data for adults with T1D who were using AID and initiated tirzepatide adjunct therapy for clinical indications (n = 11, median age 37, 64% female and mean body mass index of 39.6 kg/m

resultsWithin 2 months of tirzepatide treatment, there were significant reductions in total daily insulin [median (IQR) 73.9 (47.6-95.8) to 51.7 (46.7-66.8) units/day, p < 0.001], basal insulin [47 (28.2-51.8) to 32.4 (25.5-46.3) units/day, p < 0.001], and bolus insulin [31.4 (19.9-38.3) to 17.9 (14.9-22.2) units/day, p < 0.001] requirements. Insulin dose reduction from 2 to 8 months was modest. The frequency of user-initiated boluses did not differ throughout the study. Despite reductions in total insulin requirement, time in range (70-180 mg/dl) increased by 7%, A1c reduced by 0.5%, weight reduced by 9%, without increase in time below 70 mg/dl.

conclusionsThis pilot study provides clinical guidance on insulin titration for adults with T1D who may initiate tirzepatide therapy. Based on the findings of this study, we recommend reducing 25% of total daily insulin dose at tirzepatide initiation in adults with T1D using AID with baseline A1c of less than 7.5%. Higher doses of tirzepatide were associated with greater weight loss, however, the reduction in insulin requirement was minimal.

Indexed as

Automated insulin deliveryHbA1cObesityTandem control IQTime in rangeTirzepatideType 1 diabetesWeight loss

Identifiers

PMID38743306
PMCPMC11211304

What Socratic holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.