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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT00509223
Registration number
NCT00509223
Ethics application status
Date submitted
29/07/2007
Date registered
31/07/2007
Date last updated
30/12/2013
Titles & IDs
Public title
GLYCOSA Study:Effect of PAP Treatment on Glycemic Control in Patients With Type 2 Diabetes
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Scientific title
Effect of PAP Treatment on Glycemic Control in Patients With Type 2 Diabetes and Obstructive Sleep Apnea
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Secondary ID [1]
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CA-09-06-01
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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:
Diabetes Mellitus Type 2
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Condition category
Condition code
Metabolic and Endocrine
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Diabetes
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - Positive Airway Pressure therapy
BEHAVIORAL - Lifestyle counseling
Experimental: Group 1 - Lifestyle counseling with Positive Airway Pressure (PAP) therapy
Active comparator: Group 2 - Lifestyle counseling without Positive Airway Pressure (PAP) therapy
Treatment: Devices: Positive Airway Pressure therapy
Positive Airway Pressure (PAP) therapy initiated at Randomization and continued through the entire study duration (6 months), with instructions for use on a daily basis, during periods of sleep.
BEHAVIORAL: Lifestyle counseling
Lifestyle counseling: All subjects were counseled regarding adopting a healthy lifestyle and advised on the Heart Foundation, National Health and Medical Research Council, and American Diabetes Association nutrition and exercise recommendations.
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Intervention code [1]
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Treatment: Devices
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Intervention code [2]
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BEHAVIORAL
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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HbA1c Change
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Assessment method [1]
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Month 6 change in HbA1c (%)
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Timepoint [1]
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Baseline to Month 6
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Eligibility
Key inclusion criteria
1. 18 years of age or older,
2. Known diagnosis of type 2 diabetes for at least 3 months
3. HbA1c >6.5% and </= 8.5%
4. BMI </= 40 kg/m2
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Minimum age
18
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
1. Requires oxygen therapy
2. OSA is severe (AHI>70 or SaO2<70%)
3. Work in transport related industries
4. Previous diagnosis of OSA
5. Known MVA due to sleepiness in the previous 5 years
6. Insulin-requiring
7. Use of GLP-1 mimetic (e.g. Byetta) for < 6 months or > 6 months but weight not stable
8. Unstable angina
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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)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
NA
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/07/2007
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/02/2012
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Sample size
Target
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Accrual to date
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Final
416
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Recruitment in Australia
Recruitment state(s)
NSW,VIC
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Recruitment hospital [1]
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Royal North Shore Hospital - Sydney
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Recruitment hospital [2]
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Eastern Clinical Research Unit - Box Hill
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Recruitment hospital [3]
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Baker IDI Heart and Diabetes Institute - Melbourne
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Recruitment postcode(s) [1]
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2065 - Sydney
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Recruitment postcode(s) [2]
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3128 - Box Hill
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Recruitment postcode(s) [3]
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3004 - Melbourne
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Recruitment outside Australia
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United States of America
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California
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Florida
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New York
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Ohio
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Texas
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Canada
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Quebec
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
ResMed
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Other collaborator category [1]
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Other
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Name [1]
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Royal North Shore Hospital
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Address [1]
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Other collaborator category [2]
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Other
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Name [2]
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Baker Heart and Diabetes Institute
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Other
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Name [3]
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International Diabetes Center at Park Nicollet
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Ethics approval
Ethics application status
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Summary
Brief summary
Obstructive Sleep Apnea (OSA) and type 2 diabetes mellitus are two prevalent medical conditions with significant associated cardiovascular and cerebrovascular morbidity and mortality. Research indicates that the prevalence of OSA is increased in diabetic patients when compared with normoglycemic patients and that OSA is independently associated with type 2 diabetes. Further research suggests that effective treatment of the OSA with continuous positive airway pressure (CPAP) improves insulin responsiveness in both non-diabetic OSA patients and diabetic-OSA patients. We are proposing a clinical trial to evaluate the impact of 6 months of CPAP therapy on glycemic control in type 2 diabetic patients with OSA. The primary objective of this study is to assess the effectiveness of CPAP in improving glycemic control (HbA1c) in type 2 diabetic patients with newly diagnosed OSA. Secondary objectives of this study include: assessment of fasting and post prandial glucose, determination as to whether there are any biochemical markers for OSA in the type 2 diabetic population; assessment of any improvements in cardiovascular outcomes; evaluation of any improvement in quality of life. Patients with OSA will be randomized into one of two groups: either a CPAP treatment group or a non-treatment group. Patients will be followed at 3 months and 6 months with collection of various lab tests to assess glycemic control.
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Trial website
https://clinicaltrials.gov/study/NCT00509223
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Trial related presentations / publications
Shaw JE, Punjabi NM, Naughton MT, Willes L, Bergenstal RM, Cistulli PA, Fulcher GR, Richards GN, Zimmet PZ. The Effect of Treatment of Obstructive Sleep Apnea on Glycemic Control in Type 2 Diabetes. Am J Respir Crit Care Med. 2016 Aug 15;194(4):486-92. doi: 10.1164/rccm.201511-2260OC.
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Public notes
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Contacts
Principal investigator
Name
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Paul Zimmet, MBBS MD PhD
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Address
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International Diabetes Institute, Australia
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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 are available at
https://clinicaltrials.gov/study/NCT00509223
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