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Clinical Research Directory

Browse clinical research sites, groups, and studies.

65 clinical studies listed.

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Type 1 Diabetes (T1D)

Tundra lists 65 Type 1 Diabetes (T1D) clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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NOT YET RECRUITING

NCT07503366

Standardized Italian netwoRk Enrolling iNdividuals With Islet-Autoantibodies

This project characterizes the longitudinal progression of children and adults who have tested positive for one or more islet cell autoantibodies across the early stages of type 1 diabetes (T1D). Despite advances in screening, limited evidence exists on how clinical, metabolic, and immunological markers evolve over time and predict progression to symptomatic disease. Using a screened cohort, participants are followed for up to 10 years with repeated standardized assessments. The study evaluates whether population-based screening can reduce diabetic ketoacidosis (DKA) at diagnosis and identify early predictors of progression to clinical T1D. Results are expected to improve risk stratification, inform surveillance strategies, and guide the timing of preventive interventions, with implications for clinical practice and health policy.

Gender: All

Updated: 2026-04-08

Type 1 Diabetes (T1D)
Autoantibodies
Hyperglycemia
+1
RECRUITING

NCT07011147

Primary Care Pragmatic, Real World Experience for Automated Insulin Delivery

The goal of this randomized controlled trial is to compare the efficacy and safety of the iLet Bionic Pancreas (BP) System in adults with insulin-treated diabetes (type 1 diabetes or type 2 diabetes) compared to standard of care when ordered by primary care providers. The main question it aims to answer is: Can the iLet BP by deployed in primary care settings to adults with insulin-treated diabetes (type 1 diabetes or type 2 diabetes)? Researchers will compare 13-weeks of iLet BP use to routine care to see if iLet BP use has a greater reduction in HbA1c compared to13-weeks of routine care. Participants will: Use the iLet BP for 13-weeks or continue their routine care Be trained to use the study devices or continue their routine care Complete a virtual screening visit, mid-period follow up calls and a final visit Complete baseline CGM collection Complete surveys and fingerstick a1c blood tests Routine care participants will have the option to complete an observational extension phase where they will wear the iLet BP for 13-weeks

Gender: All

Ages: 18 Years - 89 Years

Updated: 2026-04-02

2 states

Type 1 Diabetes (T1D)
Type 2 Diabetes
Diabetes, Autoimmune
+8
RECRUITING

NCT06919354

A Study of GNTI-122 in Adults Recently Diagnosed With T1D

This is a 78-week single arm, multi-center, Phase 1 study to evaluate the safety, tolerability, cellular kinetics, and biomarker changes in C-peptide over time of GNTI-122, an investigational cell therapy manufactured from a participant's own blood cells in adult participants with recently diagnosed T1D. After assessment of eligibility, participants who qualify for the study will be enrolled sequentially in 1 of 3 cohorts. Cohort 1 participants (n=3) receive a low dose of GNTI-122 . Cohort 2 participants (n=3) receive a high dose of GNTI-122. Cohort 3 participants (n=10) receive a high dose of GNTI-122 in combination with rapamycin. Participants are followed for 78 weeks after the administration of GNTI-122 during which safety and efficacy assessments are made, including vital signs, ECG, physical exam, clinical labs, and monitoring of adverse events and concomitant medications. Disease markers (e.g., MMTT-stimulated C-peptide, HbA1c) and pharmacodynamic activity (e.g., lymphocyte subsets and phenotypes, effector T cell responses to islet antigens ex vivo, T1D autoantibodies) will be monitored serially throughout the study. The study will include sentinel dosing and a Safety Review Committee to ensure participant safety. Visit https://www.polarisstudy.com to learn more!

Gender: All

Ages: 18 Years - 45 Years

Updated: 2026-03-27

5 states

Type 1 Diabetes (T1D)
Type 1 Diabetes Mellitus
NOT YET RECRUITING

NCT07493122

Study of IMC-S118AI in Type 1 Diabetes

This is a first-in-human (FIH) study designed to assess the safety, tolerability, and pharmacokinetic (PK) profile of IMC-S118AI in single-ascending dose (SAD) and multiple-ascending dose (MAD) regimens. This study will potentially also explore the effects of multiple-dosing regimens on preservation of beta-cell function in Stage 3 Type 1 diabetes.

Gender: All

Ages: 18 Years - 45 Years

Updated: 2026-03-25

Type 1 Diabetes
Type 1 Diabetes (T1D)
Diabetes Type 1
NOT YET RECRUITING

NCT07482488

Technology Knowledge Optimization for Type 1 Diabetes in Schools

The goal of this study is to evaluate the feasibility and acceptability of a school nurse focused e-Learning application to improve their diabetes device knowledge and confidence. School nurses will be asked to complete pre-/post-surveys around a 16-week curriculum.

Gender: All

Ages: 5 Years - Any

Updated: 2026-03-19

1 state

Type 1 Diabetes (T1D)
RECRUITING

NCT07470593

Study of Glucose Tolerance Abnormalities Using Continuous Glucose Monitoring for the Identification of Early Loss of Pancreatic Islet Graft Function.

Islet transplantation is associated with drastically improvement glucose control in people with type 1 diabetes. This treatment resulted in the disappearance of severe hypoglycemic events. However, its long-term effectiveness is limited by progressive loss of graft function. Currently, there is no standardized method to detect early dysfunction of the transplanted islets. This study aims to determine whether a parameter derived from continuous glucose monitoring (CGM), Time in Tight Range (70-140 mg/dL), is associated with pancreatic islet grafts function. The study hypothesis is that a decrease in Time in Tight Range reflects early loss of islet graft function.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-17

Type 1 Diabetes (T1D)
ACTIVE NOT RECRUITING

NCT03961347

Lactobacillus Johnsonii Supplementation in Adults With T1D

While genetics demonstrated a major risk factor for the development of type 1 diabetes (T1D), microbiota dysbiosis has been suggested as an elicitor in immunological tolerance and of beta cell autoimmunity. The probiotic Lactobacillus johnsonii N6.2 may prevent or restore the gut flora and show systemic impacts and adaptive immunity in the T1D population thereby preserving beta cell function.

Gender: All

Ages: 18 Years - 45 Years

Updated: 2026-03-12

1 state

Type 1 Diabetes (T1D)
NOT YET RECRUITING

NCT07463209

Integrating New Skills Into Diabetes Education With CGM

This study is designed to test the preliminary efficacy of a three-stage continuous glucose monitor (CGM) integration program for older adults who are taking insulin. This study will learn if a three-stage CGM integration program ("intervention") that includes sessions focused on CGM technology skills, data skills, and lifestyle skills impacts CGM wear-time, glycemic metrics, and participant-reported outcomes, compared to two standard CGM training approaches ("comparators"). Following a screening visit and baseline data collection, participants will be randomized to either the intervention or one of the two comparator arms for 6 weeks. The intervention involves three educational sessions over 4 weeks. The first session will be in-person and subsequent sessions will be virtual. Participants in the intervention may receive 1-2 additional individualized training sessions to review CGM skills. The first comparator (Comparator A) will receive a one-time clinic-based CGM training. The second comparator (Comparator B) will be provided with a comprehensive informational pamphlet about CGM. All participants will complete outcomes data collection at 6 weeks. The study will also explore participant experiences through a series of semi-structured interviews with a subset of purposively selected participants and their care partners to identify opportunities for scaling the intervention to a broader population. Lastly, an extension phase of the study will evaluate long-term CGM use and associated outcomes 3- and 6-months post-intervention.

Gender: All

Ages: 65 Years - Any

Updated: 2026-03-11

1 state

Insulin Dependent Diabetes
Diabetes (DM)
Diabetes (Insulin-requiring, Type 1 or Type 2)
+4
NOT YET RECRUITING

NCT07322380

Feasibility and Adoption of a Screening Program for T1D Relatives in Canada

The aim of this study will be to evaluate the feasibility of an autoantibody-based type 1 diabetes screening program for first degree relatives of people living with type 1 diabetes within the province of Quebec. Feasibility of follow-up strategies of "at-risk" individuals will also be assessed. This project will be divided into two phases, with the aim to evaluate: 1. The feasibility of a IAb (islet antibody)-based screening process for first degree relatives of people living with type 1 diabetes (T1D). 2. The feasibility of two approaches for follow-up monitoring in case of positive screening: centralized (within the organization) and decentralized approach (relying on individuals' healthcare providers), in the Quebec province setting. Participants will come to the laboratory for blood sample collection, medical history and genetic risk score assessment, as well as anthropometric and cutaneous advanced glycated end (AGE) products measurements. A series of questionnaires will be completed. After screening results are obtained (i.e., presence or absence of IAbs), a virtual visit will be conducted to communicate results to participants. A positive result for IAb will warrant a second test for confirmation , using WBD within 3 months of initial screening. After IAb positivity confirmation, participants will be invited to participate in phase 2 of this project (monitoring). Participants will be given the opportunity to select either a centralized or decentralized path for study monitoring. Follow-up will be dependent of the stage of T1D: * Participants in pre-stage 1 or stage 1 (2 or more positive IAbs without dysglycemia) T1D will receive a follow-up phone call six months after the initial screening. * Participants in stage 2 (2 or more positive IAbs with dysglycemia) will be contacted one month after screening.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-04

Type 1 Diabetes (T1D)
ENROLLING BY INVITATION

NCT07351318

Estimating Insulin Sensitivity in Pregnancies With Type 1 Diabetes

The investigators want to learn how the body's response to insulin changes during pregnancy in people with Type 1 Diabetes. In this study, the investigators will look at information from people who used a Dexcom continuous glucose monitor (CGM) and a Tandem insulin pump while they were pregnant. Participants will fill out an online survey and agree to share their device data. The investigators will use this information to see how insulin sensitivity changes from three months before pregnancy to six months after the baby is born.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-03-02

2 states

Pregnancy
Type 1 Diabetes (T1D)
RECRUITING

NCT06575426

A Study to Investigate Safety and Effectiveness of Porcine Pancreatic Cells (OPF-310) in Patients With Type 1 Diabetes Mellitus

This study is First In Human study for Encapsulated Porcine Islet Cells for Xenotransplantation (OPF-310). The purpose of this study to assess the safety, tolerability, and efficacy of OPF-310 transplantation and to define the recommended Phase 2 dose (RP2D) in adult subjects with unstable Type 1 Diabetes Mellitus (T1DM) and a level 3 (severe) hypoglycemic episode at least three times within the 1 year prior to enrollment despite treatment with a closed loop system (CLS) for at least 6 months.

Gender: All

Ages: 35 Years - 65 Years

Updated: 2026-03-02

1 state

Diabetes Mellitus, Type 1
Hypoglycemia
Islet Cell Transplantation
+14
ACTIVE NOT RECRUITING

NCT07440108

Evaluation of a Biopsychosocial System

The goal of this observational study is to evaluate the feasibility of a biopsychosocial sensing system integrated into the Adhera Caring Digital Program® for caregivers of children with type 1 diabetes (T1D). The main questions it aims to answer are: * Is the integrated biopsychosocial sensing system feasible to use in real-world conditions over a 2-month period? * Is the system usable and acceptable for caregivers? * How do biopsychosocial factors interact with severe glucose events, and what do these dynamics reveal about caregiver distress during T1D management? Findings from this study will help determine whether the system can support future development of data-driven interventions for families managing pediatric T1D.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-27

1 state

T1D
Type 1 Diabetes (T1D)
Type 1 Diabetes
RECRUITING

NCT07186660

Evaluation of a Novel Insulin Sensitizer in People With Type 1 Diabetes

The purpose of this study is to see if the study drug CIR-0602K will improve glucose time-in-range and/or lower total daily insulin dose in people with type 1 diabetes who are using closed-loop automated insulin delivery. Researchers will compare CIR-0602K to a placebo (a look-alike substance that contains no drug) to see if it achieves the investigational endpoints. If the study results show that the drug works to increase time-in-range and lower insulin doses, this will lead to further studies which may then make the drug available to the public.

Gender: All

Ages: 18 Years - 45 Years

Updated: 2026-02-25

1 state

Type 1 Diabetes (T1D)
Glycemic Control for Diabetes Mellitus
Insulin
+2
NOT YET RECRUITING

NCT07226583

Using a Personalized Decision Support Tool to Help People With Type 1 Diabetes Manage Exercise

This study evaluates a clinician-facing decision-support toolkit designed to assist adults with type 1 diabetes in preparing for moderate-intensity exercise. The netIOB \& Exercise Toolkit (NEXT) integrates recent glucose data and insulin delivery history to provide individualized suggestions regarding exercise timing, insulin adjustments, and carbohydrate intake. Adults with type 1 diabetes will complete three supervised exercise sessions under different pre-exercise guidance approaches: (A) published consensus-based standard-of-care guidance, (B) usual personal care routines, and (C) guidance informed by the NEXT Toolkit. A healthy adult control group will complete a single supervised exercise session to provide comparative physiologic data.

Gender: All

Ages: 18 Years - 60 Years

Updated: 2026-02-19

1 state

Type 1 Diabetes Mellitis
Type 1 Diabetes (T1D)
Type 1 Diabetes Mellitus (T1DM)
+1
ACTIVE NOT RECRUITING

NCT06626347

Telemedicine for Reach, Education, Access, and Treatment for Diabetes Self-Management Education and Support

Emerging adults with type 1 diabetes are a vulnerable population. While diabetes self-management and education is known to offer opportunities to develop self-management skills required to achieve and maintain short- and long-term diabetes outcomes, emerging adults are reported to have poor clinic attendance and in turn low participation in diabetes self-management education and support services. This pilot study aims to test a novel approach to diabetes self-management education and support that incorporates technological and applied learning-driven methods delivered through group telemedicine visits to improve emerging adults engagement in diabetes self-management education and support with the ultimate goal of improving diabetes outcomes.

Gender: All

Ages: 18 Years - 26 Years

Updated: 2026-02-17

1 state

Type 1 Diabetes (T1D)
RECRUITING

NCT06782568

Avoidance of Insulin-induced Lipohypertophy in People With Diabetes Using Ultrasound Scanning Within Diabetes Clinics

Diabetes is a common long-term health condition globally. Type 1 diabetes requires insulin treatment right from diagnosis. Similarly, many living with type 2 diabetes eventually require insulin injections as the condition progresses. A common but often underappreciated complication associated with insulin use is the formation of fatty tissue at injection sites, known as "Lipos," a shorthand for "Lipohypertrophy." These Lipos can interfere with insulin absorption, leading to an altered insulin action profile. This results in glucose fluctuations increasing the risk of both high and low glucose levels. In current medical practice, Lipos are assessed through clinical examination, specifically by physically palpating the injection sites. Research indicates that approximately 40% of insulin-treated individuals may have Lipos. However, manual palpation can often overlook these fatty deposits. Ultrasound scanning (USS) presents a more effective method for detecting Lipos. Studies that have employed ultrasound scanning have reported a much higher prevalence, reaching up to 86%. The primary goal of this study is to ascertain whether the avoidance of ultrasound-identified Lipos can improve glucose regulation. The focus will be on individuals using continuous glucose monitoring who exhibit high glucose fluctuations and less time within their target range. By focusing on this population, the chances of identifying those with Lipos will increase. Participants will undergo a clinical examination followed by an ultrasound scan. Those found to have Lipos will receive guidance on avoiding those sites and education on insulin injection techniques. Glucose data will be collected periodically over the next 24 weeks. After this period, participants will return for a follow-up ultrasound scan. Additionally, members of the diabetes care team will be trained to conduct the ultrasound scans. Data from this study may also be utilized to develop artificial intelligence algorithms aimed at identifying Lipos in future ultrasound scans.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-13

Type 1 Diabetes (T1D)
Type 2 Diabetes, Insulin Requiring
NOT YET RECRUITING

NCT07401901

Evaluation of the Safety and Effectiveness of the Novel Medtronic Experimental Automated Insulin Delivery System (NMX8) in Adults Living With Type 1 Diabetes

The purpose of the study is to evaluate the safety and the effectiveness of the Novel Medtronic Experimental Automated Insulin Delivery system, named MiniMed NMX8 system (referred also to as NMX8 system), in comparison with other commercially available AID systems (Automated insulin delivery) in adult patients with Type 1 diabetes not achieving target clinical outcomes.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-12

Type 1 Diabetes (T1D)
RECRUITING

NCT07062887

Digital Mindfulness for Young Adults With Type 1 Diabetes

The purpose of this research study is to test a mindfulness app called Calm Health among young adults with type 1 diabetes or other absolute insulin deficiency diabetes. Mindfulness is the practice of being aware of your thoughts and feelings in the moment without judgment or negative reaction. All participants will receive mindfulness guidance and personalized feedback about the relationship among your mindfulness, blood sugar, stress, and sleep.

Gender: All

Ages: 18 Years - 30 Years

Updated: 2026-02-09

1 state

Type 1 Diabetes (T1D)
Diabetes Secondary to Pancreatitis
RECRUITING

NCT06883344

Automated Insulin for Management of Intrapartum Glycemia

The goal of this clinical trial is learn if automated insulin delivery (AID) systems can be used for glucose management during labor/delivery for pregnant people with type 1 diabetes (T1D). The main questions this study aims to answer are * What are the neonatal glycemic outcomes with use of AID systems during labor/delivery? * Do patients report higher birth satisfaction with use of AID systems during labor/delivery? * Are glycemic parameters like time-in-range (TIR) better with use of AID systems during labor/delivery? Researchers will compare AID systems to intravenous (IV) insulin (the current standard of care for glucose management during labor/delivery) by randomly assigning participants to one or the other.

Gender: FEMALE

Ages: 18 Years - 55 Years

Updated: 2026-02-05

1 state

Type 1 Diabetes (T1D)
Pregnancy
Pre-Gestational Diabetes
RECRUITING

NCT06630585

GIP/GLP-1RA as Adjunctive to Automated Insulin Delivery in Adults With Type 1 Diabetes

Blood glucose management in type 1 diabetes (T1D) remains a challenge, with only \~30% of adults within the recommended consensus guidelines. Novel drugs like glucagon-like peptide-1 receptor agonists (GLP-1RAs) and glucose-dependent insulinotropic polypeptide (GIP)/GLP-1RAs have emerged as promising add-ons to insulin in T1D. This application has been designed to test in a prospective study whether adding a new medicine called tirzepatide (GIP/GLP-1RA) to the usual insulin therapy would make a difference for people with T1D in terms of better glucose control.

Gender: All

Ages: 18 Years - 65 Years

Updated: 2026-01-26

2 states

Type 1 Diabetes (T1D)
RECRUITING

NCT07356089

Twiist Postmarket Surveillance Study for Type 1 Diabetes

The goal of this surveillance study is to collect real-world data on adults and youth with type 1 diabetes (T1D) using twiist(TM) for insulin delivery.

Gender: All

Ages: 6 Years - Any

Updated: 2026-01-21

1 state

Type 1 Diabetes (T1D)
Type 1 Diabetes Mellitus
RECRUITING

NCT06915831

Type 1 Diabetes and Obstructive Sleep Apnea

The purpose of the study is to investigate the role of sleep apnea in glycemic dysregulation in adults with Type 1 diabetes.

Gender: All

Ages: 18 Years - 50 Years

Updated: 2026-01-20

1 state

Sleep Apnea, Obstructive
Type 1 Diabetes (T1D)
RECRUITING

NCT07341243

Exercising in Hot Conditions: How Does it Effect Blood Glucose in People With T1D

A randomised, crossover, counterbalanced repeated measures study will be conducted to examine the effect of acute heat exposure on rate of change in blood glucose concentration during 40 minutes of moderate-intensity exercise and for 30 minutes after exercise. Participants will complete two experimental conditions during two separate laboratory visits, with the order of conditions randomised. One condition will be a temperate condition of 20°C with 50% relative humidity (Temperate), the other will be 40°C with 50% relative humidity (Heat). Visits will be identical, including time of day, except for the condition. Visits will be separated by 24h. Testing will take place in the laboratories of the Research Institute for Sport and Exercise Sciences at Liverpool John Moores University.

Gender: All

Ages: 18 Years - 65 Years

Updated: 2026-01-14

Type 1 Diabetes (T1D)
NOT YET RECRUITING

NCT06752369

Adapting Single Sessions Interventions for Type 1 Diabetes

The goal of this clinical trial is to learn if implementing a single-session depression intervention for youth with type 1 diabetes (T1D) is feasible and acceptable to patients. can help improve mood and health outcomes. It will also learn about the initial efficacy of the intervention. The main questions it aims to answer are: 1. Is a single-session depression intervention for youth with T1D feasible to recruit and implement? 2. Is a single-session depression intervention for youth with T1D acceptable to patients (i.e., do they find it helpful)? 3. Does a single-session depression intervention for youth with T1D lead to improvements in low mood? Researchers will compare a single-session depression intervention for youth with to a education control to see if a single-session depression intervention works to improve depressive symptoms. Participants will: * Participate in a single-session depression intervention * Complete questionnaires and provide a sample for A1c at a baseline, 3-month, and 6-month visit * Complete daily questionnaires once a day for two weeks before and after the single-session depression intervention

Gender: All

Ages: 12 Years - 17 Years

Updated: 2026-01-14

1 state

Type 1 Diabetes (T1D)