NCT03737799

Brief Summary

This study aims to achieve more accurate early classification of diabetes and identification of which patients will rapidly require insulin treatment. The investigators will recruit 1200 participants who have been diagnosed with diabetes in the last year and were aged between 18 and 50 years at the time of diagnosis. The investigators will recruit an additional cohort of 800 participants diagnosed after age 50. The investigators will record clinical features and biomarkers that may help us to determine diabetes type at diagnosis and follow participants for 3 years to assess the development of severe insulin deficiency (measured using C-peptide) and insulin requirement. The investigators will assess utility of clinical features and additional biomarkers in identifying patients with rapid progression to insulin requirement. Findings will be integrated into a freely available clinical prediction models to assist classification of diabetes at diagnosis.

Trial Health

55
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
1,815

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Aug 2016

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 1, 2016

Completed
2.2 years until next milestone

First Submitted

Initial submission to the registry

October 8, 2018

Completed
1 month until next milestone

First Posted

Study publicly available on registry

November 13, 2018

Completed
5.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 30, 2024

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2024

Completed
Last Updated

June 4, 2024

Status Verified

June 1, 2024

Enrollment Period

7.9 years

First QC Date

October 8, 2018

Last Update Submit

June 3, 2024

Conditions

Keywords

DiabetesC-peptideInsulinClassification

Outcome Measures

Primary Outcomes (1)

  • Diabetes type defined by insulin requirement at 3 years

    Type 1 diabetes = Progression to insulin treatment and severe insulin deficiency (post meal plasma C-peptide \<600pmol/L) at 3 years. Type 2 diabetes = Lack of requirement for insulin at 3 years (HbA1c \<90mmol/mol without insulin treatment or post meal C-peptide ≥ 600pmol/L if insulin treated).

    3 years

Secondary Outcomes (8)

  • Stimulated plasma C-peptide <200pmol/L at 3 years ('absolute insulin deficiency')

    3 years

  • C-peptide rate of change (UCPCR and plasma)

    3 years

  • Weight change (baseline to 3 years)

    3 years

  • HbA1c (mean and at 3 years)

    3 years

  • Self-reported hypoglycaemia & hypoglycaemic awareness (Modified Clark and Gold)

    3 years

  • +3 more secondary outcomes

Study Arms (3)

Group 1 Age 18-50 at diagnosis

Diagnosed with diabetes within the previous 1 year. Aged between 18 and 50 years at the time of diabetes diagnosis

Group 2 Late Onset (insulin)

Diagnosed with diabetes within the previous 1 year. Aged \>50 at the time of diabetes diagnosis and treated with insulin therapy

Group 3 Late Onset (no insulin)

Diagnosed with diabetes within the previous 1 year. Aged \>50 at the time of diabetes diagnosis and treated without insulin

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Recently diagnosed diabetes patients in primary care, secondary care or community.

You may qualify if:

  • Adults diagnosed with diabetes within the previous 12 months.
  • Aged ≥18 and ≤50 at the time of diabetes diagnosis\* or (additional late onset diabetes cohort) aged \>50 at the time of diabetes diagnosis.
  • Able and willing to provide informed consent

You may not qualify if:

  • Gestational diabetes.
  • Known secondary diabetes (diabetes considered likely due to medication, cystic fibrosis, pancreatitis, pancreatic cancer, pancreatic surgery, hemochromatosis or Cushing's syndrome).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Anita Hill

Exeter, Devon, EX2 5DW, United Kingdom

Location

Related Publications (3)

  • Thomas NJ, Lynam AL, Hill AV, Weedon MN, Shields BM, Oram RA, McDonald TJ, Hattersley AT, Jones AG. Type 1 diabetes defined by severe insulin deficiency occurs after 30 years of age and is commonly treated as type 2 diabetes. Diabetologia. 2019 Jul;62(7):1167-1172. doi: 10.1007/s00125-019-4863-8. Epub 2019 Apr 10.

    PMID: 30969375BACKGROUND
  • Eason RJ, Thomas NJ, Hill AV, Knight BA, Carr A, Hattersley AT, McDonald TJ, Shields BM, Jones AG; StartRight Study Group. Routine Islet Autoantibody Testing in Clinically Diagnosed Adult-Onset Type 1 Diabetes Can Help Identify Misclassification and the Possibility of Successful Insulin Cessation. Diabetes Care. 2022 Dec 1;45(12):2844-2851. doi: 10.2337/dc22-0623.

  • Thomas NJ, Hill AV, Dayan CM, Oram RA, McDonald TJ, Shields BM, Jones AG; StartRight Study Group. Age of Diagnosis Does Not Alter the Presentation or Progression of Robustly Defined Adult-Onset Type 1 Diabetes. Diabetes Care. 2023 Jun 1;46(6):1156-1163. doi: 10.2337/dc22-2159.

Biospecimen

Retention: SAMPLES WITH DNA

Serum, Plasma, DNA, RNA, Cell free DNA

MeSH Terms

Conditions

Diabetes MellitusInsulin Resistance

Condition Hierarchy (Ancestors)

Glucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesHyperinsulinism

Study Officials

  • Angus G Jones, MBBS MRCP

    Royal Devon & Exeter NHS Foundation Trust & University of Exeter

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 8, 2018

First Posted

November 13, 2018

Study Start

August 1, 2016

Primary Completion

June 30, 2024

Study Completion

December 31, 2024

Last Updated

June 4, 2024

Record last verified: 2024-06

Locations