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Trial registered on ANZCTR
Registration number
ACTRN12607000610437
Ethics application status
Approved
Date submitted
26/11/2007
Date registered
28/11/2007
Date last updated
5/12/2016
Type of registration
Prospectively registered
Titles & IDs
Public title
The bone effects of pioglitazone
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Scientific title
A randomized controlled trial of the effects of pioglitazone on bone density and bone turnover in type 2 diabetes mellitus
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Secondary ID [1]
259739
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Nil
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Type 2 diabetes mellitus
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Osteoporosis
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Condition category
Condition code
Metabolic and Endocrine
2692
2692
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0
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Diabetes
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Musculoskeletal
2693
2693
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0
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Osteoporosis
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Pioglitazone 30mg per oral daily for 12 months
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Intervention code [1]
2316
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Treatment: Drugs
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Comparator / control treatment
Placebo, sugar pill, per oral
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Control group
Placebo
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Outcomes
Primary outcome [1]
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Change in lumbar spine bone density, measured by dual energy xray absorptiometry
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Assessment method [1]
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Timepoint [1]
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1 year after randomization
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Secondary outcome [1]
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Change in total hip bone density, measured by dual energy xray absorptiometry
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Assessment method [1]
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Timepoint [1]
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1 year after randomization
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Secondary outcome [2]
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Chnage in biochemical markers of bone formation, assayed in serum
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Assessment method [2]
6017
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Timepoint [2]
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1 year after randomization
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Eligibility
Key inclusion criteria
- Type 2 diabetes mellitus (T2DM), as defined by fasting blood glucose > 7mmol/L and/or serum glucose > 11mmol/L 2h after ingesting 75g oral glucose.
- impaired glucose tolerance, as defined by fasting blood glucose < 6-7 mmol/L and/or serum glucose 7.8-11mmol/L 2h after ingesting 75g oral glucose
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Minimum age
30
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Medical Conditions
- subjects with type 2 diabetes mellitus (T2DM) deemed to require early glitazone treatment and meeting Pharmac criteria for funded supply
- renal impairment (estimated glomerular filtration rate < 30ml/min).
- congestive heart failure, New York Heart Association Grade 2 or higher
- clinical liver disease.
- untreated thyroid dysfunction.
- concurrent major systemic illness, including malignancy.
- metabolic bone diseases, or serum alkaline phosphatase (ALP) > 2x normal limit.
- primary hyperparathyroidism.
- Bone mineral density (BMD) T score < -2.0 at total hip or spine
- previous fragility fracture (forearm, humerus, hip, vertebra)
- body weight >120kg
2.2.2 Medications
- use of oral glucocorticoid drugs equivalent to an average dose of prednisone = 2.5 mg/day in the preceding 12 months
- current or past use of bisphosphonate therapy
- use of hormone replacement therapy within the last 12 months
- use of other medication known to alter bone metabolism
- current use of thiazolidinediones
Insulin use is not an exclusion criterion, but insulin dose should be stable (+/- 20%) for 3 months before enrolment.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Allocation is concealed. Allocation involves contacting the holder of the allocation schedule who is "off-site"
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Randomization will be undertaken using a variable block size schedule, based on computer-generated random numbers, stratified for age, menopausal status, and gender.
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
This is a 1 year randomized interventional protocol, with a 1 year observational follow-up period
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Phase
Phase 4
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Type of endpoint/s
Safety
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
1/10/2008
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Actual
1/10/2008
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Date of last participant enrolment
Anticipated
30/04/2011
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Actual
30/04/2011
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Date of last data collection
Anticipated
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Actual
30/04/2012
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Sample size
Target
100
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Accrual to date
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Final
86
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Recruitment outside Australia
Country [1]
697
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New Zealand
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State/province [1]
697
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Funding & Sponsors
Funding source category [1]
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Government body
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Name [1]
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Health Research Council of New Zealand
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Address [1]
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PO Box 5541
Wellesley St
Auckland
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Country [1]
2834
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New Zealand
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Primary sponsor type
Individual
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Name
Andrew Grey
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Address
Department of Medicine
University of Auckland
Private bag 92019
Auckland
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Country
New Zealand
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Secondary sponsor category [1]
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University
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Name [1]
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University of Auckland
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Address [1]
2553
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Private Bag 92019
Auckland
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Country [1]
2553
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New Zealand
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Northern Y Regional Ethics Committee
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Ethics committee address [1]
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Ministry of Health
2rd Floor, BNZ Building
354 Victoria St
PO Box 1031
Hamilton
New Zealand
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Ethics committee country [1]
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New Zealand
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Date submitted for ethics approval [1]
4762
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20/11/2007
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Approval date [1]
4762
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04/04/2008
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Ethics approval number [1]
4762
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NTY/07/12/128
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Summary
Brief summary
Type 2 diabetes mellitus (T2DM) is a common disease that is associated with an increased risk of bone fracture. Recent evidence suggests that pioglitazone, a drug commonly used to treat T2DM by improving the effectiveness of action of the hormone insulin, may increase the risk of bone fracture, by decreasing the activity of bone-forming cells and thereby bone density. At present, little is known about the actions of pioglitazone on bone in humans. Our study is designed to determine the mechanism, magnitude and reversibility of the effects of pioglitazone on blood markers of bone metabolism and bone density in subjects with T2DM. Some evidence suggests that pioglitazone may increase the risk of heart failure, although it may also decrease the risk of heart attack and stroke. We intend to perform blood and ultrasound measurements of heart function in the subjects who participate in our study.
The results of the study will assist T2DM patients and their doctors in decisions around use of pioglitazone, the need for bone and/or heart monitoring in patients taking pioglitazone, and use of treatments to prevent bone loss in patients taking pioglitazone.
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Trial website
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Trial related presentations / publications
Grey A, Bolland M, Fenwick S, Horne A, Gamble G, Drury PL, Reid IR. The skeletal effects of pioglitazone in type 2 diabetes or impaired glucose tolerance: a randomized controlled trial. Eur J Endocrinol 2014:170:255-62
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Public notes
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Contacts
Principal investigator
Name
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A/Prof Andrew Grey
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Address
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Department of Medicine
University of Auckland
Private Bag 92019
Auckland
new Zealand
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Country
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New Zealand
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Phone
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+6499234423
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Dr Anne Horne
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Address
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Osteoporosis Research Group
Department of Medicine
Level 3,
Support Building
Auckland City Hospital
Park Rd.,
Grafton,
Auckland
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Country
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New Zealand
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Phone
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64-9-3078970
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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A/Prof Andrew Grey
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Address
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Department of Medicine
University of Auckland
Private Bag 92019
Auckland
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Country
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New Zealand
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Phone
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64-9-3737599, ext 84423
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Fax
2297
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Email
2297
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[email protected]
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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
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
Source
Title
Year of Publication
DOI
Dimensions AI
The skeletal effects of pioglitazone in type 2 diabetes or impaired glucose tolerance: a randomized controlled trial
2013
https://doi.org/10.1530/eje-13-0793
N.B. These documents automatically identified may not have been verified by the study sponsor.
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