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Gastric bypass drug study pulled before starting

NCT ID NCT04423588

Knowledge-focused Sponsor: Spital Limmattal Schlieren Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study was designed to see how well the stomach-acid drug dexlansoprazole is absorbed before and after gastric bypass surgery, and how often ulcers occur afterward. It planned to enroll smokers with obesity who were scheduled for surgery. However, the study was withdrawn before any participants were enrolled, so no results are available.

What this could mean

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

Active substance
dexlansoprazole (Dexilant)

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Started

Jan 2022

Finished

Sep 2022

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

18 years and older

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: * Informed consent for study and surgery as documented by signature * Male and Female Patients over 18 years old eligible for bariatric surgery at the Department of General Surgery, Limmattal Hospital, according to criteria of the Swiss Study Group for Morbid Obesity (SMOB) and international Guidelines * BMI ≥ 35 * Failure of conservative Treatment for 2 years * Type of surgery: LPRYGB * Helicobacter pylori negative * Smoker (≥ 1 cigarette daily) * Women in reproductive Age: negative pregnancy test Exclusion Criteria: * Contraindication for a bariatric surgery according to SMOB-criteria * Contraindication for PPIs * Pregnant or breastfeeding women * Pre- or intraoperative decision for other type of surgery than LPRYGB * Active malignancy * Chronic liver disease Child-Pugh B or C * Abuse of drugs or alcohol * Suspect of non-compliance

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Conditions

The condition(s) this trial relates to.

obesity disorder gastrojejunal ulcer prevention target

As listed by the trial registrant

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

Bariatric surgery

More trials for these conditions

Other studies related to the condition(s) this trial covers.