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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT02423434




Registration number
NCT02423434
Ethics application status
Date submitted
17/04/2015
Date registered
22/04/2015
Date last updated
6/11/2019

Titles & IDs
Public title
Evaluation of Corneal Confocal Microscopy for the Identification and Prediction of Neuropathy in Type 1 Diabetes
Scientific title
Multinational Collaborative Evaluation of Corneal Confocal Microscopy as a Surrogate Endpoint for the Identification and Prediction of Diabetic Neuropathy in Type 1 Diabetes
Secondary ID [1] 0 0
1DP3DK104386-01
Secondary ID [2] 0 0
DP3DK104386
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Diabetic Polyneuropathy 0 0
Diabetes Mellitus 0 0
Diabetes Mellitus, Type 1 0 0
Diabetes Mellitus, Type 2 0 0
Diabetes Complications 0 0
Condition category
Condition code
Metabolic and Endocrine 0 0 0 0
Diabetes
Neurological 0 0 0 0
Other neurological disorders

Intervention/exposure
Study type
Observational
Patient registry
Target follow-up duration
Target follow-up type
Description of intervention(s) / exposure
Other interventions - Exposure: Corneal nerve fibre morphology by the CCM Procedure

Corneal Confocal Microscopy subjects -


Other interventions: Exposure: Corneal nerve fibre morphology by the CCM Procedure
CCM is a non-invasive method for direct visualization of corneal nerve fibers. Previous research work has confirmed that corneal nerves status correlates with both small and large fibre damage as assessed by quantitative sensory testing and nerve conduction.

In the current trial subjects will undergo a bilateral examination of the Bowman's layer of the cornea using the Rostock Cornea Module of the Heidelberg Tomograph III (Heidelberg Engineering, Smithfield RI, USA) to determine their corneal nerve fiber length, corneal nerve fiber density, corneal nerve branch density, and the tortuosity coefficient. Topical anaesthetic and a viscous gel medium will be applied to the eye, which will create a visual gel bridge between the cornea and the sterile single-use cap on the microscope objective lens. After the interface between the corneal epithelium and Bowman's layer is identified, batches of images will be taken and the most technically sound images will be identified and analyzed.
Intervention code [1] 0 0
Other interventions
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Evaluate the Concurrent Validity of CCM Parameters from Cross-Sectional Analysis of Well-Characterized T1D and T2D Subjects.
Timepoint [1] 0 0
Any data obtained from pre-study measurements
Primary outcome [2] 0 0
Evaluate the Predictive Validity of CCM Parameters based on the 5-7 year Incidence of Neuropathy in Well-Characterized T1D and T2D Subjects Without Neuropathy at Baseline
Timepoint [2] 0 0
Study visit
Primary outcome [3] 0 0
Evaluate the Predictive Validity of CCM Parameters for 5-7 year Progression of Neuropathy
Timepoint [3] 0 0
Study visit
Primary outcome [4] 0 0
Comparison of Manual versus Automated Image analysis
Timepoint [4] 0 0
Pre-study and study visit data
Secondary outcome [1] 0 0
Determination of the Factors associated with CCM Parameters and their Longitudinal Change
Timepoint [1] 0 0
Study visit

Eligibility
Key inclusion criteria
* Individuals of any gender or race aged 18 or above
* Type 1 diabetes mellitus or type 2 diabetes mellitus as defined by the American Diabetes Association guidelines (2014) of any duration
* Availability of the initial CCM examination performed two to eight years ago
* Ability to understand and cooperate with study procedures
Minimum age
18 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* Confirmed to have neuropathy owing to non-diabetic causes (such as familial, alcoholic, nutritional, uremic)
* Current eye infection, corneal damage, or severe movement disorders which could preclude a safe CCM exam
* Allergy to proparacaine (the ocular topical anaesthetic used for the CCM exam)

Study design
Purpose
Duration
Selection
Timing
Prospective
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
1/09/2014
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
1/08/2018
Sample size
Target
Accrual to date
Final
624
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
Queensland University of Technology - Brisbane
Recruitment postcode(s) [1] 0 0
4059 - Brisbane
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
Michigan
Country [2] 0 0
Canada
State/province [2] 0 0
Alberta
Country [3] 0 0
Canada
State/province [3] 0 0
Ontario
Country [4] 0 0
United Kingdom
State/province [4] 0 0
Manchester

Funding & Sponsors
Primary sponsor type
Other
Name
Samuel Lunenfeld Research Institute, Mount Sinai Hospital
Address
Country
Other collaborator category [1] 0 0
Government body
Name [1] 0 0
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Address [1] 0 0
Country [1] 0 0
Other collaborator category [2] 0 0
Other
Name [2] 0 0
University of Calgary
Address [2] 0 0
Country [2] 0 0
Other collaborator category [3] 0 0
Other
Name [3] 0 0
Queensland University of Technology
Address [3] 0 0
Country [3] 0 0
Other collaborator category [4] 0 0
Other
Name [4] 0 0
University of Michigan
Address [4] 0 0
Country [4] 0 0
Other collaborator category [5] 0 0
Other
Name [5] 0 0
University of Manchester
Address [5] 0 0
Country [5] 0 0

Ethics approval
Ethics application status

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Bruce A Perkins, MD
Address 0 0
MOUNT SINAI HOSPITAL
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries

No information has been provided regarding IPD availability


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

No documents have been uploaded by study researchers.

Results not provided in https://clinicaltrials.gov/study/NCT02423434