Usefulness of Continuous Glucose Monitoring in MODY Diagnosis

NCT ID: NCT05918484

Last Updated: 2025-02-10

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

COMPLETED

Total Enrollment

500 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-07-01

Study Completion Date

2025-01-31

Brief Summary

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Observational study about usefulness of intermittently scanned continuous glucose monitoring (isCGM) in the diagnosis of maturity-onset of the young (MODY) patients.

Detailed Description

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Cross-sectional retrospective analysis of all patients with type 1 diabetes (T1D) in Castilla-La Mancha (south-central Spanish region) using intermittently scanned continuous glucose monitoring (isCGM). This study aimed to asses the usefulness of isCGM in the diagnosis of MODY patients that were previously wrongly diagnosed as T1D patients.

The following glycometrics were taking into account as MODY predictors: time in range (70-180 mg/dL \>70%, Glucose Management Index \<7% y Coefficient of variation \<36%. Patient´s clinical records of subjects meeting these glycometric criteria were reviewed for clinical suspicious of MODY (diagnosis before 35 years of age, first-degree family history of diabetes, negative pancreatic autoimmunity, preserved pancreatic beta cell function. Those patients meeting isCGM and clinical suspicious criteria were offered a diagnostic test for MODY.

The relationship between the qualitative outcome variable (MODY presence) and the quantitative variables will be performed using Student's t-test and ANOVA in situations of good fit with normality, and the Mann Whitney U and Kruskal Wallis when there is not a good fit with normality, and the Mann Whitney U and Kruskal Wallis when there is not.A P value \< 0.05 was considered statistically significant.

The protocol was approved by the reference Castilla-La Mancha Public Health Institute Ethic Committee.

Conditions

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Type 1 Diabetes MODY

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Type 1 diabetes patients

All type 1 diabetes patients using intermittently scanned continuous glucose monitoring (isCGM) in Castilla-La Mancha (Spain).

Intermittenly scanned continuous glucose monitoring

Intervention Type DEVICE

Use of Intermittenly scanned continuous glucose monitoring (FreeStyle Libre) and meeting the glycometric data criteria:

* Time in range 70-180 mg/L \>70%
* Glycemic management index \<7%
* Coefficient of variation \<36%

MODY genetic diagnostic test

Intervention Type OTHER

Those patients fulfilling the glycometric data criteria and with clinical MODY suspicion:

* diagnosis before 35 years of age
* first-degree family history of diabetes.
* negative pancreatic autoimmunity (Ac GAD, IA-2A and Ac ZnT8)
* preserved pancreatic beta cell function defined as C-peptide \> 0.2 ng/mL in the presence of plasma glycemia \>140 mg/dL).

Those patients who meet the previous criteria will proceed to the MODY genetic diagnostic test.

Interventions

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Intermittenly scanned continuous glucose monitoring

Use of Intermittenly scanned continuous glucose monitoring (FreeStyle Libre) and meeting the glycometric data criteria:

* Time in range 70-180 mg/L \>70%
* Glycemic management index \<7%
* Coefficient of variation \<36%

Intervention Type DEVICE

MODY genetic diagnostic test

Those patients fulfilling the glycometric data criteria and with clinical MODY suspicion:

* diagnosis before 35 years of age
* first-degree family history of diabetes.
* negative pancreatic autoimmunity (Ac GAD, IA-2A and Ac ZnT8)
* preserved pancreatic beta cell function defined as C-peptide \> 0.2 ng/mL in the presence of plasma glycemia \>140 mg/dL).

Those patients who meet the previous criteria will proceed to the MODY genetic diagnostic test.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Presence of T1D.
* Age equal or higher than 18 years old.
* In treatment with isCGM system.
* Active data in Libreview.
* isCGM use \>70% of the possible time of use (isCGM data quality criteria).
* Time in range \>70%, glucose management index \<7% and coefficiente of variation \<36% in the last 14 days glucometric recording.

Exclusion Criteria

* Not receiving treatment with isCGM.
* Diagnosis of T1D in the last three years.
* Gestation in progress or programmed pregnancy.
Minimum Eligible Age

18 Years

Maximum Eligible Age

100 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Castilla-La Mancha Health Service

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jesus Moreno-Fernandez, PhD

Role: PRINCIPAL_INVESTIGATOR

SESCAM

Locations

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Albacete University Hospital

Albacete, Albacete, Spain

Site Status

La Mancha-Centro Hospital

Alcázar de San Juan, Ciudad Real, Spain

Site Status

Santa Barbara Hospital

Puertollano, Ciudad Real, Spain

Site Status

Valdepeñas General Hospital

Valdepeñas, Ciudad Real, Spain

Site Status

Virgen de la Luz University Hospital

Cuenca, Cuenca, Spain

Site Status

Guadalajara University Hospital

Guadalajara, Guadalajara, Spain

Site Status

Maria Jose Picon

Málaga, Malaga, Spain

Site Status

Virgen del Prado Hospital

Talavera de la Reina, Toledo, Spain

Site Status

Toledo University Hospital

Toledo, Toledo, Spain

Site Status

Countries

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Spain

References

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Battelino T, Danne T, Bergenstal RM, Amiel SA, Beck R, Biester T, Bosi E, Buckingham BA, Cefalu WT, Close KL, Cobelli C, Dassau E, DeVries JH, Donaghue KC, Dovc K, Doyle FJ 3rd, Garg S, Grunberger G, Heller S, Heinemann L, Hirsch IB, Hovorka R, Jia W, Kordonouri O, Kovatchev B, Kowalski A, Laffel L, Levine B, Mayorov A, Mathieu C, Murphy HR, Nimri R, Norgaard K, Parkin CG, Renard E, Rodbard D, Saboo B, Schatz D, Stoner K, Urakami T, Weinzimer SA, Phillip M. Clinical Targets for Continuous Glucose Monitoring Data Interpretation: Recommendations From the International Consensus on Time in Range. Diabetes Care. 2019 Aug;42(8):1593-1603. doi: 10.2337/dci19-0028. Epub 2019 Jun 8.

Reference Type BACKGROUND
PMID: 31177185 (View on PubMed)

Holt RIG, DeVries JH, Hess-Fischl A, Hirsch IB, Kirkman MS, Klupa T, Ludwig B, Norgaard K, Pettus J, Renard E, Skyler JS, Snoek FJ, Weinstock RS, Peters AL. The Management of Type 1 Diabetes in Adults. A Consensus Report by the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD). Diabetes Care. 2021 Nov;44(11):2589-2625. doi: 10.2337/dci21-0043. Epub 2021 Sep 30.

Reference Type BACKGROUND
PMID: 34593612 (View on PubMed)

Tosur M, Philipson LH. Precision diabetes: Lessons learned from maturity-onset diabetes of the young (MODY). J Diabetes Investig. 2022 Sep;13(9):1465-1471. doi: 10.1111/jdi.13860. Epub 2022 Jun 16.

Reference Type BACKGROUND
PMID: 35638342 (View on PubMed)

Broome DT, Pantalone KM, Kashyap SR, Philipson LH. Approach to the Patient with MODY-Monogenic Diabetes. J Clin Endocrinol Metab. 2021 Jan 1;106(1):237-250. doi: 10.1210/clinem/dgaa710.

Reference Type BACKGROUND
PMID: 33034350 (View on PubMed)

Shields BM, Shepherd M, Hudson M, McDonald TJ, Colclough K, Peters J, Knight B, Hyde C, Ellard S, Pearson ER, Hattersley AT; UNITED study team. Population-Based Assessment of a Biomarker-Based Screening Pathway to Aid Diagnosis of Monogenic Diabetes in Young-Onset Patients. Diabetes Care. 2017 Aug;40(8):1017-1025. doi: 10.2337/dc17-0224.

Reference Type BACKGROUND
PMID: 28701371 (View on PubMed)

Other Identifiers

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C-621

Identifier Type: -

Identifier Source: org_study_id

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