ObesityNCT02792166
Single Anastomosis Duodeno-ileal Bypass With Sleeve Gastrectomy (SADI-S): A Prospective Cohort Study
A study testing BPD-DS and SADI-S in people with Obesity and Morbid Obesity, run by McGill University Health Centre/Research Institute of the McGill University Health Centre at 1 site in Canada.
Trial summary
The prevalence of morbid obesity in Canada has risen almost 5 fold in the past three decades. Surgery remains the cornerstone of treatment of obesity and related comorbidities such as type-2 diabetes. Read more about this study
- Who is it for?
- Ages 18 to 60 years
- Conditions the study is for
- Obesity, Morbid Obesity
- What is being tested?
- BPD-DS and SADI-S
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 62 participants
- Where
- 1 siteCanada
- Study dates
- Jun 2016to 31 Dec 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 60 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- Participants must meet ALL of the following inclusion criteria:
- Age ≥18 years and ≤60 years
- Fulfill criteria for bariatric surgery as coined by National Institutes of Health
- Give written informed consent
Who cannot join
- Participants who meet any of the following criteria at the time of the baseline visit are excluded from the study:
- Presence of the following baseline comorbidities:
- Congestive heart failure (CHF),
- Chronic kidney disease (CKD) stage 3-5 (or GFR <60 ml/min per 1.73 m2),
- Inflammatory bowel disease (IBD),
- Pulmonary hypertension (PHTN),
Show all 9Show fewer
- Cirrhosis.
- Severe gastroesophageal reflux disorder (GERD) +/- presence of any Barrett's disease
- Individuals who were found by any member of the multidisciplinary team (nutritionist, nurse, psychologist, and surgeon) to be at risk for lack of support and poor compliance (e.g. ≥2 missed appointments without a valid justification)
Trial locations and contacts
1 site in 1 country.
About this study
The prevalence of morbid obesity in Canada has risen almost 5 fold in the past three decades. Surgery remains the cornerstone of treatment of obesity and related comorbidities such as type-2 diabetes. Bariatric/metabolic procedures can be classified into 2 main categories: a) those that cause restriction, and b) those that add a malabsorptive component to restriction. Currently sleeve gastrectomy (SG), which is a purely restrictive operation, is the most frequently performed procedure in North America.
Interestingly, combined restrictive/malabsorptive procedures such as Roux-en-Y gastric bypass (RYGB) or biliopancreatic diversion with duodenal switch (BPD-DS) are more effective procedures when compared to purely restrictive ones. Moreover, the conventional BPD-DS procedure has been shown to be significantly more effective than RYGB in achieving durable weight loss and resolving comorbidities such as type-2 diabetes. Despite superior outcomes, the performance of BPD-DS is highly institution dependant and comprises less than 5% of the annual bariatric procedures performed worldwide.
Read more
Common reservations against BPD-DS are related to the side effects of the procedure, and include frequent bowel movements, flatulence, fat, micronutrient and protein malnutrition. Furthermore, longer operative times and surgical technical challenges are also reasons for lower prevalence of the BPD-DS procedure.
Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is a modification of the conventional BPD-DS that potentially addresses many of these concerns. In addition, it is a suitable second-stage or salvage procedure for severely obese patients with inadequate weight loss or resolution of obesity-related comorbidities after SG. Despite showing excellent results of up to 5 years with acceptable postoperative morbidity, all the literature on SADI-S originates from a single center and has not been compared directly with BPD-DS. Hence, the investigators aim to evaluate the feasibility, safety, and postoperative outcomes of SADI-S as it compares to conventional BPD-DS in morbidly obese patients.
This project has three specific aims:
- To evaluate feasibility and short-term safety of SADI-S.
- To evaluate short and long-term beneficial outcomes.
- To evaluate and compare long-term morbidity.
Read the detailed description
The prevalence of morbid obesity in Canada has risen almost 5 fold in the past three decades. Surgery remains the cornerstone of treatment of obesity and related comorbidities such as type-2 diabetes. Bariatric/metabolic procedures can be classified into 2 main categories: a) those that cause restriction, and b) those that add a malabsorptive component to restriction. Currently sleeve gastrectomy (SG), which is a purely restrictive operation, is the most frequently performed procedure in North America.
Interestingly, combined restrictive/malabsorptive procedures such as Roux-en-Y gastric bypass (RYGB) or biliopancreatic diversion with duodenal switch (BPD-DS) are more effective procedures when compared to purely restrictive ones. Moreover, the conventional BPD-DS procedure has been shown to be significantly more effective than RYGB in achieving durable weight loss and resolving comorbidities such as type-2 diabetes. Despite superior outcomes, the performance of BPD-DS is highly institution dependant and comprises less than 5% of the annual bariatric procedures performed worldwide.
Common reservations against BPD-DS are related to the side effects of the procedure, and include frequent bowel movements, flatulence, fat, micronutrient and protein malnutrition. Furthermore, longer operative times and surgical technical challenges are also reasons for lower prevalence of the BPD-DS procedure.
Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is a modification of the conventional BPD-DS that potentially addresses many of these concerns. In addition, it is a suitable second-stage or salvage procedure for severely obese patients with inadequate weight loss or resolution of obesity-related comorbidities after SG. Despite showing excellent results of up to 5 years with acceptable postoperative morbidity, all the literature on SADI-S originates from a single center and has not been compared directly with BPD-DS. Hence, the investigators aim to evaluate the feasibility, safety, and postoperative outcomes of SADI-S as it compares to conventional BPD-DS in morbidly obese patients. Our project has three specific aims:
- To evaluate feasibility and short-term safety of SADI-S. The investigators will assess operative parameters (e.g. procedure time, inadvertent injuries, need for conversion to laparotomy, and transfusion of blood products) and 30-day postoperative adverse events (e.g. length of stay, superficial/deep surgical site infection, leak, venous thromboembolism (VTE), need for reintervention and readmission).
- To evaluate short and long-term beneficial outcomes. The investigators will evaluate and compare excess weight loss, resolution of type-2 diabetes and other comorbidities, and changes in quality of life at 1, 6, 12 months and yearly thereafter for both groups.
- To evaluate and compare long-term morbidity. The investigators will evaluate and compare both groups at 6, 12 months and yearly thereafter following surgery for long-term morbidities (e.g. frequency of bowel movements, fat malabsorption, micronutrient and protein-calorie malnutrition, need for supplemental nutrition, internal/incisional hernia, and gastro-esophageal reflux).
- Conditions
- Obesity, Morbid Obesity
- Being tested
- BPD-DS, SADI-S
- Keywords
- Morbid obesity, Metabolic syndrome, Metabolic surgery, Bariatric surgery, SADI, BPD-DS
- Medical subject headings
- Obesity, Obesity, Morbid, Metabolic Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BPD-DSProcedure or surgery
Also called Bariatric/metabolic surgery
Biliopancreatic Diversion with Duodenal Switch
SADI-SProcedure or surgery
Also called Bariatric/metabolic surgery
Single Anastomosis Duodeno-ileal Bypass with Sleeve Gastrectomy
| Study group | Role | What they receive |
|---|---|---|
| BPD-DS | Active comparator | BPD-DS involves creating a sleeve gastrectomy and creation of a Roux-en-Y bypass involving a Roux limb (150cm) which is anastomosed to the transected first-stage of the duodenum and a short common channel (100cm). Receives: Procedure: BPD-DS |
| SADI-S | Experimental | SADI-S involves creating a sleeve gastrectomy but simplifies the bypass part of the BPD-DS by a single anastomosis of a loop of jejunum at 250cm from the ileocecal valve (longer common channel) to the transected first-stage of the duodenum instead of the Roux-en-Y construct. Receives: Procedure: SADI-S |
What is being measured
The primary outcome is the main question the study is designed to answer.
Short-term Safety Assessment
To evaluate feasibility and short-term safety of SADI-S, we will assess operative parameters (procedure time, inadvertent injuries, need for conversion to laparotomy, and transfusion of blood products) and 30-day postoperative adverse events (length of stay, superficial/deep surgical site infection, leak, venous thromboembolism (VTE), need for reintervention and readmission).
Measured: 30 days
Weight loss
%EWL and change in BMI as compared to preoperative reference values
Measured: 5 years
Secondary outcomes (4)
Long-term Morbidity Assessment
Postoperatively at 1, 6, 12 months and yearly thereafter for 5 years both groups will be compared for incidence of long-term morbidities including frequency of bowel movements, fat malabsorption, micronutrient and protein-calorie malnutrition, need for supplemental nutrition, internal/incisional herniation, and worsening versus de novo GERD.
At each visit protein (albumin, total protein) and vitamin/micronutrient levels (calcium, magnesium, iron, zinc, copper, selenium, vitamins A/E/D/K/B1/B6/B12) will be monitored using respective blood tests.
Measured: 5 years
Remission of T2DM
The presence of T2DM will be diagnosed according to the American Diabetes Association's current criteria:
- HbA1C ≥6.5 percent, OR
- FPG ≥126 mg/dL (7.0 mmol/L), OR
- 2-hour plasma glucose ≥200 mg/dL (11.1 mmol/L) during an OGTT, OR
- In a patient with classic symptoms of hyperglycemia or hyperglycemic crisis, a random plasma glucose ≥200 mg/dL (11.1 mmol/L)
Measured: 5 years
Resolution/Improvement in other obesity related comorbidities
Hypertension, Dyslipidemia, Obstructive sleep apnea, NAFLD/NASH
Measured: 5 years
Quality of Life Assessment
Quality of life status will be assessed using the SF-36 questionnaire at each follow-up visit.
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Jun 2016 (estimated)
- Study startJun 2016
- Primary completion31 Dec 2019
- Study completion31 Dec 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (7)Papers the sponsor has linked to this study.
- Other trials for ObesityStudies of the same condition, open and under way.
- More trials run by McGill University Health Centre/Research Institute of the McGill University Health CentreThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 62 participants (actual)
Sponsor and investigators
- Lead sponsor
- McGill University Health Centre/Research Institute of the McGill University Health Centre
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Amin Andalib, McGill University
- Investigators
- Amin Andalib, MD MSc FRCSC, Principal investigator, McGill University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02792166
- Sponsor's protocol ID
- 15-588 MUHC
- Status last verified
- Sep 2025
- First submitted
- 2 Jun 2016
- Last updated
- 1 Oct 2025
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Sanchez-Pernaute A, Herrera MA, Perez-Aguirre ME, Talavera P, Cabrerizo L, Matia P, Diez-Valladares L, Barabash A, Martin-Antona E, Garcia-Botella A, Garcia-Almenta EM, Torres A. Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S). One to three-year follow-up. Obes Surg. 2010 Dec;20(12):1720-6. doi: 10.1007/s11695-010-0247-3.
PubMed 20798995Sanchez-Pernaute A, Rubio MA, Cabrerizo L, Ramos-Levi A, Perez-Aguirre E, Torres A. Single-anastomosis duodenoileal bypass with sleeve gastrectomy (SADI-S) for obese diabetic patients. Surg Obes Relat Dis. 2015 Sep-Oct;11(5):1092-8. doi: 10.1016/j.soard.2015.01.024. Epub 2015 Feb 7.
PubMed 26048517Sanchez-Pernaute A, Rubio MA, Perez Aguirre E, Barabash A, Cabrerizo L, Torres A. Single-anastomosis duodenoileal bypass with sleeve gastrectomy: metabolic improvement and weight loss in first 100 patients. Surg Obes Relat Dis. 2013 Sep-Oct;9(5):731-5. doi: 10.1016/j.soard.2012.07.018. Epub 2012 Aug 7.
PubMed 22963820Sanchez-Pernaute A, Rubio MA, Conde M, Arrue E, Perez-Aguirre E, Torres A. Single-anastomosis duodenoileal bypass as a second step after sleeve gastrectomy. Surg Obes Relat Dis. 2015 Mar-Apr;11(2):351-5. doi: 10.1016/j.soard.2014.06.016. Epub 2014 Jul 10.
PubMed 25543309Sanchez-Pernaute A, Rubio Herrera MA, Perez-Aguirre E, Garcia Perez JC, Cabrerizo L, Diez Valladares L, Fernandez C, Talavera P, Torres A. Proximal duodenal-ileal end-to-side bypass with sleeve gastrectomy: proposed technique. Obes Surg. 2007 Dec;17(12):1614-8. doi: 10.1007/s11695-007-9287-8. Epub 2007 Nov 27.
PubMed 18040751Andalib A, Safar A, Bouchard P, Demyttenaere S, Court O. Single Anastomosis Duodenal Switch versus Classic Duodenal Switch: Long-term Outcomes from a Prospective Comparative Cohort Study. Obes Surg. 2023 Dec;33(12):3951-3961. doi: 10.1007/s11695-023-06900-z. Epub 2023 Oct 21.
PubMed 37864735Andalib A, Bouchard P, Alamri H, Bougie A, Demyttenaere S, Court O. Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S): short-term outcomes from a prospective cohort study. Surg Obes Relat Dis. 2021 Feb;17(2):414-424. doi: 10.1016/j.soard.2020.09.015. Epub 2020 Sep 14.
PubMed 33158766
Study at a glance
From the registry record, last updated by the sponsor on 1 Oct 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Single Anastomosis Duodeno-ileal Bypass With Sleeve Gastrectomy (SADI-S): A Prospective Cohort Study
- ClinicalTrials.gov ID
- NCT02792166
- Acronym / sponsor ID
- 15-588 MUHC
- Conditions
- Obesity, Morbid Obesity
- Keywords
- Morbid obesity, Metabolic syndrome, Metabolic surgery, Bariatric surgery, SADI, BPD-DS
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 62 participants (actual)
- Lead sponsor
- McGill University Health Centre/Research Institute of the McGill University Health CentreUniversity, hospital or other
- Study start
- Jun 2016
- Primary completion
- 31 Dec 2019 (actual)
- Study completion
- 31 Dec 2024 (actual)
- First posted
- 7 Jun 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The prevalence of morbid obesity in Canada has risen almost 5 fold in the past three decades. Surgery remains the cornerstone of treatment of obesity and related comorbidities such as type-2 diabetes. Bariatric/metabolic procedures can be classified into 2 main categories: a) those that cause restriction, and b) those that add a malabsorptive component to restriction. Currently sleeve gastrectomy (SG), which is a purely restrictive operation, is the most frequently performed procedure in North America.
Interestingly, combined restrictive/malabsorptive procedures such as Roux-en-Y gastric bypass (RYGB) or biliopancreatic diversion with duodenal switch (BPD-DS) are more effective procedures when compared to purely restrictive ones. Moreover, the conventional BPD-DS procedure has been shown to be significantly more effective than RYGB in achieving durable weight loss and resolving comorbidities such as type-2 diabetes. Despite superior outcomes, the performance of BPD-DS is highly institution dependant and comprises less than 5% of the annual bariatric procedures performed worldwide.
Common reservations against BPD-DS are related to the side effects of the procedure, and include frequent bowel movements, flatulence, fat, micronutrient and protein malnutrition. Furthermore, longer operative times and surgical technical challenges are also reasons for lower prevalence of the BPD-DS procedure.
Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is a modification of the conventional BPD-DS that potentially addresses many of these concerns. In addition, it is a suitable second-stage or salvage procedure for severely obese patients with inadequate weight loss or resolution of obesity-related comorbidities after SG. Despite showing excellent results of up to 5 years with acceptable postoperative morbidity, all the literature on SADI-S originates from a single center and has not been compared directly with BPD-DS. Hence, the investigators aim to evaluate the feasibility, safety, and postoperative outcomes of SADI-S as it compares to conventional BPD-DS in morbidly obese patients.
This project has three specific aims:
- To evaluate feasibility and short-term safety of SADI-S.
- To evaluate short and long-term beneficial outcomes.
- To evaluate and compare long-term morbidity.
Detailed description
The prevalence of morbid obesity in Canada has risen almost 5 fold in the past three decades. Surgery remains the cornerstone of treatment of obesity and related comorbidities such as type-2 diabetes. Bariatric/metabolic procedures can be classified into 2 main categories: a) those that cause restriction, and b) those that add a malabsorptive component to restriction. Currently sleeve gastrectomy (SG), which is a purely restrictive operation, is the most frequently performed procedure in North America.
Interestingly, combined restrictive/malabsorptive procedures such as Roux-en-Y gastric bypass (RYGB) or biliopancreatic diversion with duodenal switch (BPD-DS) are more effective procedures when compared to purely restrictive ones. Moreover, the conventional BPD-DS procedure has been shown to be significantly more effective than RYGB in achieving durable weight loss and resolving comorbidities such as type-2 diabetes. Despite superior outcomes, the performance of BPD-DS is highly institution dependant and comprises less than 5% of the annual bariatric procedures performed worldwide.
Common reservations against BPD-DS are related to the side effects of the procedure, and include frequent bowel movements, flatulence, fat, micronutrient and protein malnutrition. Furthermore, longer operative times and surgical technical challenges are also reasons for lower prevalence of the BPD-DS procedure.
Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is a modification of the conventional BPD-DS that potentially addresses many of these concerns. In addition, it is a suitable second-stage or salvage procedure for severely obese patients with inadequate weight loss or resolution of obesity-related comorbidities after SG. Despite showing excellent results of up to 5 years with acceptable postoperative morbidity, all the literature on SADI-S originates from a single center and has not been compared directly with BPD-DS. Hence, the investigators aim to evaluate the feasibility, safety, and postoperative outcomes of SADI-S as it compares to conventional BPD-DS in morbidly obese patients. Our project has three specific aims:
- To evaluate feasibility and short-term safety of SADI-S. The investigators will assess operative parameters (e.g. procedure time, inadvertent injuries, need for conversion to laparotomy, and transfusion of blood products) and 30-day postoperative adverse events (e.g. length of stay, superficial/deep surgical site infection, leak, venous thromboembolism (VTE), need for reintervention and readmission).
- To evaluate short and long-term beneficial outcomes. The investigators will evaluate and compare excess weight loss, resolution of type-2 diabetes and other comorbidities, and changes in quality of life at 1, 6, 12 months and yearly thereafter for both groups.
- To evaluate and compare long-term morbidity. The investigators will evaluate and compare both groups at 6, 12 months and yearly thereafter following surgery for long-term morbidities (e.g. frequency of bowel movements, fat malabsorption, micronutrient and protein-calorie malnutrition, need for supplemental nutrition, internal/incisional hernia, and gastro-esophageal reflux).
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| BPD-DS | Active comparator | Procedure: BPD-DSBPD-DS involves creating a sleeve gastrectomy and creation of a Roux-en-Y bypass involving a Roux limb (150cm) which is anastomosed to the transected first-stage of the duodenum and a short common channel (100cm). |
| SADI-S | Experimental | Procedure: SADI-SSADI-S involves creating a sleeve gastrectomy but simplifies the bypass part of the BPD-DS by a single anastomosis of a loop of jejunum at 250cm from the ileocecal valve (longer common channel) to the transected first-stage of the duodenum instead of the Roux-en-Y construct. |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Age ≥18 years and ≤60 years
- Fulfill criteria for bariatric surgery as coined by National Institutes of Health
- Give written informed consent
Key exclusion criteria (9 listed)
- Participants who meet any of the following criteria at the time of the baseline visit are excluded from the study:
- Presence of the following baseline comorbidities:
- Congestive heart failure (CHF),
- Chronic kidney disease (CKD) stage 3-5 (or GFR <60 ml/min per 1.73 m2),
- Inflammatory bowel disease (IBD),
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| BPD-DSAlso: Bariatric/metabolic surgeryBiliopancreatic Diversion with Duodenal Switch | Procedure or surgery | BPD-DS |
| SADI-SAlso: Bariatric/metabolic surgerySingle Anastomosis Duodeno-ileal Bypass with Sleeve Gastrectomy | Procedure or surgery | SADI-S |
Primary outcome
Short-term Safety Assessment
Time frame: 30 days
To evaluate feasibility and short-term safety of SADI-S, we will assess operative parameters (procedure time, inadvertent injuries, need for conversion to laparotomy, and transfusion of blood products) and 30-day postoperative adverse events (length of stay, superficial/deep surgical site infection, leak, venous thromboembolism (VTE), need for reintervention and readmission).
Weight loss
Time frame: 5 years
%EWL and change in BMI as compared to preoperative reference values
4 secondary outcomes
Long-term Morbidity Assessment
Time frame: 5 years
Remission of T2DM
Time frame: 5 years
Resolution/Improvement in other obesity related comorbidities
Time frame: 5 years
Quality of Life Assessment
Time frame: 5 years
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Oct 2025.
- Results publication: PubMed 20798995Sanchez-Pernaute A, Herrera MA, Perez-Aguirre ME, Talavera P, Cabrerizo L, Matia P, Diez-Valladares L, Barabash A, Martin-Antona E, Garcia-Botella A, Garcia-Almenta EM, Torres A. Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S). One to three-year follow-up. Obes Surg. 2010 Dec;20(12):1720-6. doi: 10.1007/s11695-010-0247-3.
- Results publication: PubMed 26048517Sanchez-Pernaute A, Rubio MA, Cabrerizo L, Ramos-Levi A, Perez-Aguirre E, Torres A. Single-anastomosis duodenoileal bypass with sleeve gastrectomy (SADI-S) for obese diabetic patients. Surg Obes Relat Dis. 2015 Sep-Oct;11(5):1092-8. doi: 10.1016/j.soard.2015.01.024. Epub 2015 Feb 7.
- Results publication: PubMed 22963820Sanchez-Pernaute A, Rubio MA, Perez Aguirre E, Barabash A, Cabrerizo L, Torres A. Single-anastomosis duodenoileal bypass with sleeve gastrectomy: metabolic improvement and weight loss in first 100 patients. Surg Obes Relat Dis. 2013 Sep-Oct;9(5):731-5. doi: 10.1016/j.soard.2012.07.018. Epub 2012 Aug 7.
- Results publication: PubMed 25543309Sanchez-Pernaute A, Rubio MA, Conde M, Arrue E, Perez-Aguirre E, Torres A. Single-anastomosis duodenoileal bypass as a second step after sleeve gastrectomy. Surg Obes Relat Dis. 2015 Mar-Apr;11(2):351-5. doi: 10.1016/j.soard.2014.06.016. Epub 2014 Jul 10.
- Results publication: PubMed 18040751Sanchez-Pernaute A, Rubio Herrera MA, Perez-Aguirre E, Garcia Perez JC, Cabrerizo L, Diez Valladares L, Fernandez C, Talavera P, Torres A. Proximal duodenal-ileal end-to-side bypass with sleeve gastrectomy: proposed technique. Obes Surg. 2007 Dec;17(12):1614-8. doi: 10.1007/s11695-007-9287-8. Epub 2007 Nov 27.
- Derived from this study: PubMed 37864735Andalib A, Safar A, Bouchard P, Demyttenaere S, Court O. Single Anastomosis Duodenal Switch versus Classic Duodenal Switch: Long-term Outcomes from a Prospective Comparative Cohort Study. Obes Surg. 2023 Dec;33(12):3951-3961. doi: 10.1007/s11695-023-06900-z. Epub 2023 Oct 21.
- Derived from this study: PubMed 33158766Andalib A, Bouchard P, Alamri H, Bougie A, Demyttenaere S, Court O. Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S): short-term outcomes from a prospective cohort study. Surg Obes Relat Dis. 2021 Feb;17(2):414-424. doi: 10.1016/j.soard.2020.09.015. Epub 2020 Sep 14.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Amin Andalib, MD MSc FRCSC principal investigator
McGill University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing BPD-DS and SADI-S in people with Obesity and Morbid Obesity, run by McGill University Health Centre/Research Institute of the McGill University Health Centre at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 1 Oct 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Short-term Safety Assessment (time frame: 30 days). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02792166, which also lists 7 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Oct 2025.