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Can tailoring bypass length to the individual improve Weight-Loss surgery?

NCT ID NCT07796503

Disease control Sponsor: National Scientific Center of Surgery named after A.N.Syzganov Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 01, 2026 · Last updated Sep 02, 2026 · Updated 1 time

Summary

This trial compares two surgical techniques used during one-anastomosis gastric bypass for severe obesity. One method sets the length of the bypassed intestine based on the patient's measured total small bowel length, while the other uses standard lengths based on body mass index. Researchers will track weight loss, improvement in obesity-related health problems, and complication rates over 12 months. The goal is to see if a personalized approach leads to better outcomes and fewer side effects.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Two surgical techniques for setting the length of the bypassed small intestine during one-anastomosis gastric bypass: one based on the patient's measured total small bowel length, the other based on standard BMI categories.
What this could lead to
If the TSBL-based method works better, it could lead to more effective and safer gastric bypass surgery, with better weight loss and fewer nutritional problems for people with severe obesity.
What could go wrong
This is a single-center trial with a modest number of patients, and the results are interim. The TSBL-based method may not prove superior, and surgery carries risks like infection, bleeding, or nutritional deficiencies.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 100 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2023

Expected to finish

Nov 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age between 18 and 65 years * BMI ≥35 kg/m² in non-Asian populations or ≥32.5 kg/m² in Asian populations * Presence or absence of metabolic comorbidities (including type 2 diabetes, hypertension, and dyslipidaemia) * Eligibility for primary one-anastomosis gastric bypass (OAGB) * Provision of written informed consent Exclusion Criteria: * BMI below the defined thresholds * Severe decompensated cardiac, pulmonary, hepatic, or renal disease * Acute inflammatory conditions * Active gastric or duodenal ulcer * Psychiatric disorders or substance abuse * Pregnancy or breastfeeding * Active malignancy * Severe intra-abdominal adhesions due to prior surgery * Secondary obesity related to hypothalamic-pituitary-adrenal axis disorders

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Conditions

The condition(s) this trial relates to.

morbid obesity Obesity obesity disorder Weight Loss

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Morbid obesity Obesity

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • JSC "National Scientific Center of Surgery named after A.N. Syzganov"

    RECRUITING

    Almaty, Kazakhstan

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