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REACT – Two-Sessions, In-Clinic Feasibility and Safety Study of an Advanced Closed-Loop Insulin Delivery System for Type 1 Diabetes, Without Meal or Exercise Announcements

REACT – Two-Sessions, In-Clinic Feasibility and Safety Study of an Advanced Closed-Loop Insulin Delivery System for Type 1 Diabetes, Without Meal or Exercise Announcements - REACT

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00039549
Enrollment
10
Registered
2026-04-01
Start date
2026-05-11
Completion date
Unknown
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

E10

Interventions

Group 1: Each participant will complete two in-clinic sessions, separated by a washout and system reconfiguration period of approximately 4 weeks to ensure complete metabolic recovery, review of inter

Sponsors

OneTwenty AG
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Adults aged =18 years with a confirmed diagnosis of Type 1 Diabetes (T1D) for =12 months prior to enrolment. - Current use of continuous subcutaneous insulin infusion (CSII) and continuous glucose monitoring (CGM) as part of a hybrid closed-loop (HCL) system. - Pump: YpsoPump - Controller: CamAPS FX (=3 months of continuous use) - CGM: Libre 3 (=48 hours active sensor before enrolment) - HbA1c between 6.5 and 7.5 % at screening. - Time in Range (TIR 70-180 mg/dL) between 70 % and 85 % during the preceding 3 months (based on donated CGM data). - Time Below Range (TBR <70 mg/dL / 3.9 mmol/L) = 4 % over the same period. - Body-mass index (BMI) between 18 and 30 kg/m². - Equal gender distribution target: Approximately 50 % male and 50 % female participants. -Ability to understand and communicate in German or English. - Willingness and ability to provide written informed consent and comply with all study procedures

Exclusion criteria

Exclusion criteria: Any of the following will exclude a participant: - Initiation of current CGM system 30 kg/m². - Any psychiatric, cognitive, or behavioral condition that may interfere with safe study participation or adherence to protocol procedures. - Participation in another interventional clinical study within the previous 30 days.

Design outcomes

Primary

MeasureTime frame
Safety Endpoint: % Time Below Range (TBR, <70 mg/dL / 3.9 mmol/L) – evaluated as the primary measure of system safety. - Performance target: Median =4% TBR across participants, with no individual exceeding 10%. - Level 2 hypoglycemia (<54 mg/dL / 3.0 mmol/L) and severe hypoglycemia (requiring assistance) will be monitored as critical safety sub-endpoints. - The definition and acceptance threshold are aligned with FDA statements on safe automated insulin therapy and current consensus guidelines for AID systems.

Secondary

MeasureTime frame
Glycemic Control Metrics: - % Time In Range (TIR, 70–180 mg/dL / 3.9–10.0 mmol/L) - % Time In Tight Range (TiTR, 70–140 mg/dL / 3.9–7.8 mmol/L) - % Time Above Range (TAR, >180 mg/dL / >10.0 mmol/L) - % Time in Hypoglycemia (Level 2, 250 mg/dL / 15 mmol/L sustained for =15 minutes, confirmed by venous draw - Number of Critical Events: Any excursion beyond range sustained for >30 minutes - Participants with Recurrent Events: >2 adverse or >1 critical event per session - Glucose Rate of Change (RoC): During each challenge (mg/dL/min, 5-min moving average window) - Time to Recovery to TIR: Interval from start of deviation (non-euglycemic event) to first sustained TIR =30 minutes - Number of Algorithm Overrides or Alarms: Capturing safety-rail activations, system pauses, or manual interventions. Exploratory Outcomes - Event Detection and Prediction Accuracy: Accuracy, latency, and specificity of neoAP’s automated detection of unannounced meals and exercise events compared with timestamped ground truth. - Algorithmic Adaptation Metrics: Correlation between dosing deviations and baseline basal delivery, quantifying algorithm responsiveness and learning stability.

Countries

Austria

Contacts

Public ContactJulia Mader

Medizinische Universität Graz

julia.mader@medunigraz.at+43 316 385 12383

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: May 1, 2026