Torsby I Trial: A Prospectively Randomized Study on Standard Duodenal Switch vs. Single Anastomosis Duodeno-ileostomy Duodenal Switch
Sponsor study identifier
interventional
56
0 countries
N/A
Study Start
August 2016
Actual (reported)Primary Completion
January 2024
Actual (reported)Study Completion
January 2029
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
The aim of the Torsby I Trial is to identify differences and similarities between a standard duodenal switch (DS) and a single-anastomosis duodeno-ileostomy (SADI) regarding effect on weight, comorbidities and malnutrition.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
January 2029
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
August 2016
Actual (reported)March 11, 2019
Actual (reported)May 6, 2019
Actual (reported)January 2024
Actual (reported)January 2029
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Change of weight (kg)
Change of weight in kg with calculation of the relative weight-loss under the follow-up
January 2024 (5 yr follow-up) and january 2029 (10 yr follow-up)
Early complications
Rate of minor and major complications
Up to 10 years after operation
Alterations in comorbidities (hypertension)
January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Alterations in comorbidities (diabetes)
January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Alterations in comorbidities (sleeping apnea)
January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Alterations in comorbidities (hyperlipideamia)
January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (protein)
January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Standard duodenal switch: 1. Sleeve gastrectomy over a 35 Fr bougie 2. Division of the duodenum 2-3 cm distally of the pylorus 3. Measurement of the small bowel. 100 cm common channel. 150 cm alimentary limb. 4. Duodenoileostomy completely handsewn with 250 cm distance to the ileocecal valve. 5. Entero-entero-anastomosis linear stapled and handsewn. 6. Division between the two anastomosis. 7. Closure of the mesenteric defects.
Duodenal switch with Single anastomosis duodeno-ileostomy: 1. Sleeve gastrectomy over a 35 Fr bougie 2. Division of the duodenum 2-3 cm distally of the pylorus 3. Measurement of the small bowel. 250 cm alimentary limb/common channel. 4. Duodenoileostomy completely handsewn with 250 cm distance to the ileocecal valve. 5. Closure of the mesenteric defects.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Axer S, Al-Tai S, Ihle C, Hoffmann L. Five-year Outcomes After Single-Anastomosis Duodeno-Ileal Bypass (SADI) vs. Biliopancreatic Diversion with Duodenal Switch (BPD/DS): A Randomized Clinical Trial. Obes Surg. 2026 Jul;36(7):3832-3839. doi: 10.1007/s11695-026-08797-w. Epub 2026 Jun 10.
Axer S, Al-Tai S, Ihle C, Alwan M, Hoffmann L. Perioperative Safety and 1-Year Outcomes of Single-Anastomosis Duodeno-Ileal Bypass (SADI) vs. Biliopancreatic Diversion with Duodenal Switch (BPD/DS): A Randomized Clinical Trial. Obes Surg. 2024 Sep;34(9):3382-3389. doi: 10.1007/s11695-024-07421-z. Epub 2024 Jul 23.
Bengt Hansske, M.D.
Consultant
56 participants (actual enrollment reported by the registry).
First Submitted
March 11, 2019
First Posted
May 6, 2019
Study Start
August 2016
Actual (reported)Genistein Stimulates Insulin Sensitivity Through Gut Microbiota
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Primary Completion
January 2024
Actual (reported)Study Completion
January 2029
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
February 18, 2026
Record last verified: 2026-02
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Source: ClinicalTrials.gov.
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