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CompletedNCT04782648TB-LSGUpdated Mar 4, 2021

Transit Bipartition After Sleeve Gastrectomy

An observational study in Obesity, Morbid, Weight Gain and Bariatric Surgery Candidate, sponsored by Ruhr University of Bochum. Completed at 1 site in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-03-04.

Sponsored by Ruhr University of Bochum · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
100
Ages
18 Years and older
Sex
All
01

Study summary

Retrospective analysis of 100 morbidly obese patients who underwent a transit bipartition (TB) procedure ("Single Anastomosis Sleeve Ileal bypass") for inadequate weight loss or weight recidivism after a previous sleeve gastrectomy. Data were collected prospectively in strictly pseudonymous form. The primary endpoint of the study is weight loss at 1, 3, 6 and 12 months after TB. A subgroup analysis evaluates the effect of the length of the common channel. Secondary endpoints include impact on obesity related comorbidities (type 2 diabetes, hypertension, sleep apnea, gastroesophageal reflux) as well as safety.

Read the detailed description

Prospective data base of 100 consecutive morbidly obese patients who had undergone transit bipartition (TB, also termed "Single Anastomosis Sleeve Ileal bypass") after a previous sleeve gastrectomy (LSG). Inclusion criteria were TB for excess weight loss (EWL) \< 50% ≥ 12 months post LSG or weight recidivism of > 5 kg/qm with a body mass index (BMI) > 30 kg/qm. Patients with endocrine disorders other than type 2 diabetes mellitus (T2D), major psychiatric disorders, American Society of Anesthesiologists (ASA) III and higher or pregnant patients were excluded from the study. Data were prospectively collected in strictly pseudonymous form. Follow up time points were at 1, 3, 6 and 12 months following TB. The primary endpoint of the study is weight loss at 1, 3, 6 and 12 months after TB. A subgroup analysis evaluates the effect of the length of the common channel. Secondary endpoints include impact on obesity related comorbidities such as T2D, hypertension, sleep apnea, gastroesophageal reflux as well as safety.

02

Conditions studied

  • Obesity, Morbid
  • Weight Gain
  • Bariatric Surgery Candidate

Keywords

  • obesity
  • weight regain
  • sleeve gastrectomy
  • SASI bypass
03

In context

Obesity, Morbid

922 studies on the registry are indexed under Obesity, Morbid; 172 are open to participants now.

This study's enrollment of 100 is above the median of 78 across 306 observational studies indexed under Obesity, Morbid.

Browse Obesity, Morbid studies →

Lead sponsor

Ruhr University of Bochum is the lead sponsor of 124 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Morbidly obese patients (BMI > 30) who underwent transit bipartition (SASI bypass) for inadequate weight loss or weight regain after laparoscopic sleeve gastrectomy

Inclusion criteria

  • TB for excess weight loss (EWL) \< 50% ≥ 12 months post LSG or weight recidivism of > 5 kg/qm with a body mass index (BMI) > 30 kg/qm.

Exclusion criteria

Exclusion Criteria:

  • endocrine disorders other than T2DM, major psychiatric disorders, ASA ≥ III, pregnancy.
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
100 participants (actual)
Patient registry
No

Interventions

  • Proceduretransit bipartition

    transit bipartition as revisional bariatric surgery for weight regain after sleeve gastrectomy

    Also known as: SASI bypass

06

What researchers measure

Primary outcomes

  1. percent excess weight loss (EWL)

    preoperative weight-current weight / preoperative weight-ideal weight x 100 (ideal weight defined as BMI 25 kg/qm

    Time frame: 12 months

Secondary outcomes

  1. number of patients with improvement of type 2 diabetes

    number of patients with HbA1c \<6 %, fasting blood glucose \<100 mg/dL in the absence of antidiabetic medications

    Time frame: 12 months

  2. number of patients with improvement of gastro-esophageal reflux (GERD)

    number of patients with no GERD symptoms, reflux symptom score (RSI) \< 13 in the absence of medication

    Time frame: 12 months

  3. number of patients with improvement of hypertension

    number of patients with normotensive blood pressure (\<120/80 mmHg) in the absence of antihypertensive medication

    Time frame: 12 months

  4. number of patients with improvement of sleep apnoea

    number of patients with discontinued use of sleep apnea treatment (continuous positive airway pressure - CPAP) based on improved symptoms and Obstructive Sleep Apnoea (OSA) screening.

    Time frame: 12 months

07

Study locations

1 site
  • Klinikum Vest GmbH
    Recklinghausen, NRW 45657, Germany
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 4, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04782648
Lead sponsor
Ruhr University of Bochum
Responsible party
Markus Reiser, M.D. (Chief Dept. Gastroenterology, Ruhr University of Bochum) — Principal investigator
First posted
Mar 4, 2021
Start date
Nov 1, 2017
Primary completion
Nov 30, 2019
Completion
Dec 20, 2020
Last update
Mar 4, 2021

Study contacts

Markus Reiser, M.D.
principal investigator · Dept. Gastroenterology, Klinikum-Vest GmbH

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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