Register a trial

The ANZCTR website will be unavailable from 1pm until 3pm (AEDT) on Wednesday the 30th of October for website maintenance. Please be sure to log out of the system in order to avoid any loss of data.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this information for consumers
Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT01483560




Registration number
NCT01483560
Ethics application status
Date submitted
23/11/2011
Date registered
1/12/2011

Titles & IDs
Public title
REducing With MetfOrmin Vascular Adverse Lesions in Type 1 Diabetes (REMOVAL)
Scientific title
Phase 3 Study of Metformin in Adults With Type 1 Diabetes
Secondary ID [1] 0 0
2011-000300-18
Secondary ID [2] 0 0
GN10DI406
Universal Trial Number (UTN)
Trial acronym
REMOVAL
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Diabetes Mellitus, Type 1 0 0
Condition category
Condition code
Metabolic and Endocrine 0 0 0 0
Diabetes

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - Metformin
Treatment: Drugs - Placebo

Experimental: Metformin - Oral Metformin (as Glucophage 500mg x 2 bd) titrated from initial 500mg to target 2000mg daily

Placebo comparator: Placebo -


Treatment: Drugs: Metformin
3 years treatment duration

Treatment: Drugs: Placebo
3 years duration
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Change in Averaged Mean Far Wall Common Carotid Artery Intima-media Thickness (cIMT)
Timepoint [1] 0 0
0, 12 months, 24 months, 36 months
Secondary outcome [1] 0 0
Change in HbA1c
Timepoint [1] 0 0
Baseline, Year 3
Secondary outcome [2] 0 0
Change in LDL Cholesterol
Timepoint [2] 0 0
Baseline, Year 3
Secondary outcome [3] 0 0
Change in Estimated Glomerular Filtration Rate
Timepoint [3] 0 0
Baseline, Year 1, Year 2, Year 3
Secondary outcome [4] 0 0
Number of Participants With Retinopathy and at Least a 2 Stage Progression in Retinopathy From Baseline to 36 Months
Timepoint [4] 0 0
Baseline, Year 3
Secondary outcome [5] 0 0
Change in Weight
Timepoint [5] 0 0
Baseline, Year 1, Year 2, Year 3
Secondary outcome [6] 0 0
Change in Insulin Dose
Timepoint [6] 0 0
Baseline, Year 1, Year 2, Year 3
Secondary outcome [7] 0 0
Change in Endothelial Function
Timepoint [7] 0 0
Baseline, Year 1, Year 3

Eligibility
Key inclusion criteria
* Type 1 Diabetes for five years or more*
* Age 40 years or above
* 7.0 =< HbA1c <10.0% (53 - 86 mmol/mol)

AND 3 or more of the following ten CardioVascular Disease (CVD) risk factors:

* BMI >27 kg/m^2
* Current HbA1c >8.0% (64 mmol/mol)
* Known CVD/peripheral vascular disease
* Current smoker
* Estimated glomerular filtration rate (eGFR) <90 ml/min per 1.73 m^3
* Confirmed micro- or macroalbuminuria [according to local assays and reference ranges]
* Hypertension (BP >=140/90 millimeters of mercury (mmHg) or established on antihypertensive treatment)
* Dyslipidaemia [total cholesterol >=5.0 mmol/L (200 mg/dL);OR HDL cholesterol <1.20 mmol/L (46mg/dL) [MEN]; OR <1.30 mmol/L (50 mg/dL) [WOMEN]; or triglycerides >=1.7 mmol/L (150mg/dL); or established on lipid-lowering treatment)]
* Strong family history of CVD (at least one parent, biological aunt/ uncle, or sibling with myocardial infarction or stroke aged <60 years)
* Duration of diabetes > 20 years
Minimum age
40 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* eGFR < 45 ml/min/1.73m2
* woman of childbearing age not on effective contraception
* Pregnancy and/or lactation
* Acute coronary syndrome or Stroke/Transient Ischaemic Attack within the last three months
* NYHA stage 3 or 4 heart failure
* Significant hypoglycaemia unawareness
* Impaired cognitive function/ unable to give informed consent
* Previous carotid surgery/ inability to capture adequate carotid images
* Estimated glomerular filtration < 45ml/min/1.73m^2 (MDRD)
* Gastroparesis
* History of lactic acidosis
* Other contraindications to metformin (hepatic impairment, known hypersensitivity to metformin, acute illness such as dehydration, severe infection, shock, acute cardiac failure or suspected tissue hypoxia)
* Any coexistent life threatening condition including prior diagnosis of cancer within two years
* History of alcohol problem or drug abuse

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s

The people analysing the results/data
Intervention assignment
Parallel
Other design features
Phase
Phase 3
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
1/12/2011
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
18/04/2017
Sample size
Target
Accrual to date
Final
493
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
Royal Melbourne Hospital - Melbourne
Recruitment hospital [2] 0 0
St Vincent's Hospital - Melbourne
Recruitment hospital [3] 0 0
Royal Prince Albert Hospital - Sydney
Recruitment postcode(s) [1] 0 0
- Melbourne
Recruitment postcode(s) [2] 0 0
- Sydney
Recruitment outside Australia
Country [1] 0 0
Canada
State/province [1] 0 0
Ontario
Country [2] 0 0
Canada
State/province [2] 0 0
Ottawa
Country [3] 0 0
Denmark
State/province [3] 0 0
Gentofte
Country [4] 0 0
Netherlands
State/province [4] 0 0
Maastricht
Country [5] 0 0
United Kingdom
State/province [5] 0 0
Aberdeen
Country [6] 0 0
United Kingdom
State/province [6] 0 0
Ayr
Country [7] 0 0
United Kingdom
State/province [7] 0 0
Bristol
Country [8] 0 0
United Kingdom
State/province [8] 0 0
Dundee
Country [9] 0 0
United Kingdom
State/province [9] 0 0
Durham
Country [10] 0 0
United Kingdom
State/province [10] 0 0
Edinburgh
Country [11] 0 0
United Kingdom
State/province [11] 0 0
Exeter
Country [12] 0 0
United Kingdom
State/province [12] 0 0
Glasgow
Country [13] 0 0
United Kingdom
State/province [13] 0 0
Gloucester
Country [14] 0 0
United Kingdom
State/province [14] 0 0
Hull
Country [15] 0 0
United Kingdom
State/province [15] 0 0
Liverpool
Country [16] 0 0
United Kingdom
State/province [16] 0 0
London
Country [17] 0 0
United Kingdom
State/province [17] 0 0
Manchester
Country [18] 0 0
United Kingdom
State/province [18] 0 0
Newcastle
Country [19] 0 0
United Kingdom
State/province [19] 0 0
Plymouth
Country [20] 0 0
United Kingdom
State/province [20] 0 0
Salford

Funding & Sponsors
Primary sponsor type
Other
Name
University of Glasgow
Address
Country
Other collaborator category [1] 0 0
Other
Name [1] 0 0
NHS Greater Glasgow and Clyde
Address [1] 0 0
Country [1] 0 0
Other collaborator category [2] 0 0
Other
Name [2] 0 0
Juvenile Diabetes Research Foundation
Address [2] 0 0
Country [2] 0 0
Other collaborator category [3] 0 0
Other
Name [3] 0 0
Imperial College London
Address [3] 0 0
Country [3] 0 0
Other collaborator category [4] 0 0
Other
Name [4] 0 0
University of Wisconsin, Madison
Address [4] 0 0
Country [4] 0 0
Other collaborator category [5] 0 0
Other
Name [5] 0 0
University of Dundee
Address [5] 0 0
Country [5] 0 0
Other collaborator category [6] 0 0
Commercial sector/industry
Name [6] 0 0
Merck Serono S.A., Geneva
Address [6] 0 0
Country [6] 0 0
Other collaborator category [7] 0 0
Commercial sector/industry
Name [7] 0 0
Itamar-Medical, Israel
Address [7] 0 0
Country [7] 0 0
Other collaborator category [8] 0 0
Other
Name [8] 0 0
University of Western Ontario, Canada
Address [8] 0 0
Country [8] 0 0
Other collaborator category [9] 0 0
Other
Name [9] 0 0
University of Melbourne
Address [9] 0 0
Country [9] 0 0
Other collaborator category [10] 0 0
Other
Name [10] 0 0
Steno Diabetes Center Copenhagen
Address [10] 0 0
Country [10] 0 0
Other collaborator category [11] 0 0
Other
Name [11] 0 0
Maastricht University Medical Center
Address [11] 0 0
Country [11] 0 0

Ethics approval
Ethics application status

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

Contacts
Principal investigator
Name 0 0
John Petrie, Prof
Address 0 0
University of Glasgow
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

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Yes
What data in particular will be shared?
Site specific participant data will be made available to the site PIs later in 2017, after the main publications.
When will data be available (start and end dates)?
Available to whom?
Available for what types of analyses?
How or where can data be obtained?


What supporting documents are/will be available?




Results publications and other study-related documents

No documents have been uploaded by study researchers.


Results are available at https://clinicaltrials.gov/study/NCT01483560