EFFECT OF HYBRID CLOSED-LOOP SYSTEMS ON CARDIOVASCULAR MARKERS IN TYPE 1 DIABETES.

NCT ID: NCT07241702

Last Updated: 2025-11-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-09-01

Study Completion Date

2025-12-01

Brief Summary

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This is a prospective, non-randomized, observational cohort study conducted in adult patients with type 1 diabetes.Participants with poorly controlled T1D under multiple daily injection (MDI) treatment will be assigned to one of three treatment groups:

1. hybrid closed-loop systems (HCLS) or
2. Sodium glucose co-transporter 2 inhibitors (SGLT-2i) added to MDI or
3. intensification of MDI treatment. Markers of endothelial and cardiovascular function will be assessed at baseline, at 6 and 12 months post-treatment. The primary objactive of the study is to evaluate the effect of HCLS on cardiovacular and endothelial function compared to MDI or SGLT-2i in T1D.

Detailed Description

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Patients with type 1 diabetes mellitus (T1DM) present subclinical signs of vascular and endothelial dysfunction earlier compared to healthy individuals. Hybrid closed loop systems (HCLS) are currently the gold standard method for glycemic management, however, the data regarding its superiority in terms of the prevention of subclinical vascular and endothelial dysfunction are scarce. The aim of this study is to determine whether treatment with HCLS improves vascular and endothelial function compared to multiple daily injections (MDI) or Sodium glucose co-transporter 2 inhibitors (SGLT-2i) in patients with T1DM. Partcipants with poorly controlled T1DM under MDI treatment, will be assigned to receive either:

1. HCLS or
2. SGLT-2i as an add-on treatment to MDI or
3. intensification of MDI treatment.

We will assess at baseline and 6 and 12 months post-treatment:

(i) glycemic parameters derived via continuous glucose monitoring (GGM) (ii) pulse wave velocity (PWV) (iii)central systolic and diastolic blood pressure (cSBP, cDBP) (iv) the perfused boundary region (PBR) of the sublingual arterial microvessels, as a marker of endothelial glycocalyx integrity.

(v) global longitudinal strain(GLS).

Conditions

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Type 1 Diabetes

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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HCL group

Patients will recieve hybrid closed loop system

HCLS

Intervention Type DEVICE

Hybrid Closed-Loop System treatment

SGLT-2i group

Patients will recieve SGLT-2i as add on treatment to multiple daily injections

SGLT2 inhibitor

Intervention Type DRUG

SGLT-2 Inhibitor Treatment

MDI group

Patients will recieve intensification of MDI treatment.

MDI

Intervention Type DRUG

Multiple Daily Injection Insulin treatment

Interventions

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HCLS

Hybrid Closed-Loop System treatment

Intervention Type DEVICE

SGLT2 inhibitor

SGLT-2 Inhibitor Treatment

Intervention Type DRUG

MDI

Multiple Daily Injection Insulin treatment

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* age \>18 years
* history of type 1 diabetes with diabetes duration \> 5 years
* HbA1c ≥ 7% and ≤ 10%
* eGFR\> 60ml/min/1,73m2.

Exclusion Criteria

* history of malignancy within the last 5 years
* severe hepatic impairment
* cardiovascular events within the recent three months
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Attikon Hospital

OTHER

Sponsor Role lead

Responsible Party

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VAIA LAMBADIARI

Professor of Internal Medicine-Endocrinology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Attikon University General Hospital

Athens, , Greece

Site Status

Countries

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Greece

Other Identifiers

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TYPE 1-HCLS

Identifier Type: -

Identifier Source: org_study_id

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