Skip to content

Real-life Data From Diabetic Patients on Closed-loop Pumps

Real-life Data From Diabetic Patients on Closed-loop Pumps

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05418699
Acronym
BLOOM
Enrollment
410
Registered
2022-06-14
Start date
2022-09-26
Completion date
2025-03-31
Last updated
2026-03-12

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

Conditions

Type 1 Diabetes

Brief summary

To evaluate, in real life, the effect of closed-loop devices on the improvement of glycemic control in diabetic patients managed in the endocrinology departments of secondary care hospitals.

Detailed description

In recent years, closed-loop insulin delivery have been developed to deliver real-time glucose-responsive insulin to people with type 1 diabetes mellitus (T1DM). Their use has been validated in clinical trials, but international investigative centers participating in clinical trials are not always representative of secondary care centers, and the patients they manage are also different. The eligibility criteria for participants in clinical trials are more stringent and restrictive than those of the usual patient population of diabetes/endocrinology centers. The socio-demographic characteristics of patients in clinical trials, in particular the ratio of males to females, age or ethnicity, do not necessarily reflect those observed in patients actually using the device.

Interventions

DEVICEclosed-loop insulin pump

Follow up of patients with real-time closed-loop insulin delivery systems

Sponsors

Groupe Hospitalier de la Rochelle Ré Aunis
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
7 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* type I diabetic * with a closed-loop insulin pump

Exclusion criteria

* under legal protection order * patient or legal guardian objecting to the use of the data in the research

Design outcomes

Primary

MeasureTime frameDescription
HbA1c LevelAt 3 monthsHemoglobin A1c is an indicator of your long-term glucose levels. Normal range for the hemoglobin A1c level is between 4% and 5.6%

Secondary

MeasureTime frameDescription
HbA1c LevelAt 6 monthsHemoglobin A1c is an indicator of your long-term glucose levels. Normal range for the hemoglobin A1c level is between 4% and 5.6%
Time in RangeAt 3 monthsPercentage of time spent in the target range between 70 and 180 mg/dL in the last 14 days
Time Below RangeAt 3 monthsPercentage of time with glucose values below 70 mg/dL in the last 14 days
Time Above RangeAt 3 monthsPercentage of time with glucose values above 180 mg/dL in the last 14 days
Coefficient of VariationAt 3 monthsRatio of the standard deviation divided by the mean glucose and multiplying by 100 (percentage)

Countries

France

Contacts

STUDY_DIRECTORDidier GOUET, MD

Groupe Hospitalier de la Rochelle Ré Aunis

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
10 Participants
Age, Categorical
>=65 years
56 Participants
Age, Categorical
Between 18 and 65 years
344 Participants
Age, Continuous46 years
STANDARD_DEVIATION 16
Body mass index27 kg^m2
STANDARD_DEVIATION 5.8
Coefficient of variation35 percentage of coefficient of variation
STANDARD_DEVIATION 5.5
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
410 Participants
HbA1c level7.5 percentage of HBA1c
STANDARD_DEVIATION 0.9
Region of Enrollment
France
410 participants
Sex: Female, Male
Female
238 Participants
Sex: Female, Male
Male
172 Participants
Time above range31 percentage of time spent above range
STANDARD_DEVIATION 13.6
Time below range3 percentage of time spent below range
STANDARD_DEVIATION 3.5
Time in range64 percentage of time spent in range
STANDARD_DEVIATION 13.2

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 410
other
Total, other adverse events
184 / 410
serious
Total, serious adverse events
26 / 410

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 13, 2026