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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT01486680




Registration number
NCT01486680
Ethics application status
Date submitted
28/11/2011
Date registered
6/12/2011
Date last updated
28/09/2021

Titles & IDs
Public title
Silastic Ring Gastric Bypass Versus Sleeve Gastrectomy for Type 2 Diabetes Mellitus in Obese Patients
Scientific title
Prospective Randomised Controlled Trial Comparing the Efficacy of Laparoscopic Silastic Ring Roux-en-Y Gastric Bypass Versus Laparoscopic Sleeve Gastrectomy for the Management of Type 2 Diabetes Mellitus in Obese Patients
Secondary ID [1] 0 0
ACTRN12611000751976
Secondary ID [2] 0 0
NTY/11/07/082
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Type 2 Diabetes Mellitus 0 0
Obesity 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: Surgery - Laparoscopic Silastic Ring Roux-en-Y Gastric Bypass
Treatment: Surgery - Laparoscopic Sleeve gastrectomy

Active comparator: Laparoscopic Silastic Ring Roux-en-Y Gastric Bypass -

Active comparator: Laparoscopic Sleeve Gastrectomy -


Treatment: Surgery: Laparoscopic Silastic Ring Roux-en-Y Gastric Bypass
An isolated lesser curve-based gastric pouch will be created, with an antecolic antegastric Roux limb fashioned measuring 100 cm in length. The biliopancreatic limb will measure 50cm for all patients. A 6.5cm silastic ring will be placed above the gastrojejunostomy to prevent long term stomal dilatation.

Treatment: Surgery: Laparoscopic Sleeve gastrectomy
Resection of the greater curvature of the stomach from the distal antrum (2cm proximal to pylorus) to the angle of His, using a laparoscopic stapling device over a 36Fr bougie, will be performed to create a lesser curve gastric sleeve
Intervention code [1] 0 0
Treatment: Surgery
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Remission of type 2 diabetes mellitus/ glycaemic control
Timepoint [1] 0 0
5 years
Secondary outcome [1] 0 0
Comorbidity resolution
Timepoint [1] 0 0
5 years
Secondary outcome [2] 0 0
Peri/ post-operative morbidity and mortality
Timepoint [2] 0 0
30-day, In-hospital, 1 year and 5 years
Secondary outcome [3] 0 0
Changes in body composition, resting energy expenditure and bone density
Timepoint [3] 0 0
1 year and 5 years
Secondary outcome [4] 0 0
Quality of Life
Timepoint [4] 0 0
1 year and 5 years

Eligibility
Key inclusion criteria
* Aged 20 to 50 years old
* Body mass index 35-65
* Type 2 diabetes mellitus for at least 6 months
* Suitable for either of the two surgical procedures
Minimum age
20 Years
Maximum age
50 Years
Sex
Both males and females
Can healthy volunteers participate?
Yes
Key exclusion criteria
* Aged >50 years
* BMI >65
* Type 1 diabetes mellitus or secondary forms of diabetes
* Previous bariatric or oesophagogastric surgery
* Previous small bowel resection
* Severe cardiorespiratory or gastrointestinal disease
* Myocardial infarction or cerebrovascular event within last 6 months
* Malignancy in last 5 years
* Poorly controlled psychiatric disorder
* Contraindication to general anaesthesia
* Current smoker

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 assessing the outcomes
Intervention assignment
Parallel
Other design features
Phase
Not applicable
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
1/09/2011
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
1/10/2019
Sample size
Target
Accrual to date
Final
106
Recruitment in Australia
Recruitment state(s)
Recruitment outside Australia
Country [1] 0 0
New Zealand
State/province [1] 0 0
Auckland

Funding & Sponsors
Primary sponsor type
Other
Name
North Shore Hospital, New Zealand
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
Type 2 diabetes (T2DM) and obesity are becoming increasingly common in New Zealand (NZ) and worldwide. Both are associated with a risk of early mortality (death). Whilst weight loss surgery is known to be effective for weight loss, current research suggests that it may also be effective in resolving T2DM in around 60-80% of patients, with some no longer requiring their medication. The mechanism for this remains unclear.

Two main types of weight loss surgery are performed in NZ public hospitals, which include gastric bypass and sleeve gastrectomy. The gastric bypass is a more complex procedure compared to the sleeve gastrectomy. Whilst both appear to be effective for weight loss (with most patients losing more than 60% of their excess weight), it is still not known which one is better for treating T2DM.

This study will therefore compare which of these two surgical procedures is most effective at treating T2DM in obese patients, as well as comparing whether there are any differences in the amount of weight lost, side effects and quality of life.
Trial website
https://clinicaltrials.gov/study/NCT01486680
Trial related presentations / publications
Kaur R, Kim D, Cutfield R, Booth M, Plank L, Murphy R. Good Glycemic Outcomes Following Bariatric Surgery Among Patients With Type 2 Diabetes, Obesity, and Low-Titer GAD Antibodies. Diabetes Care. 2021 Feb;44(2):607-609. doi: 10.2337/dc20-0804. Epub 2020 Dec 11.
Murphy R, Clarke MG, Evennett NJ, John Robinson S, Lee Humphreys M, Hammodat H, Jones B, Kim DD, Cutfield R, Johnson MH, Plank LD, Booth MWC. Laparoscopic Sleeve Gastrectomy Versus Banded Roux-en-Y Gastric Bypass for Diabetes and Obesity: a Prospective Randomised Double-Blind Trial. Obes Surg. 2018 Feb;28(2):293-302. doi: 10.1007/s11695-017-2872-6.
Murphy R, Evennett NJ, Clarke MG, Robinson SJ, Humphreys L, Jones B, Kim DD, Cutfield R, Plank LD, Hammodat H, Booth MW. Sleeve gastrectomy versus Roux-en-Y gastric bypass for type 2 diabetes and morbid obesity: double-blind randomised clinical trial protocol. BMJ Open. 2016 Jul 4;6(7):e011416. doi: 10.1136/bmjopen-2016-011416.
Public notes

Contacts
Principal investigator
Name 0 0
Michael Booth, MBA FRACS
Address 0 0
North Shore Hospital, Auckland, NEW ZEALAND
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



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT01486680