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Double dose of numbing drug may slash opioid need after sarcoma surgery

NCT ID NCT04189783

Symptom relief Sponsor: M.D. Anderson Cancer Center 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether giving a second numbing injection (quadratus lumborum block) after surgery for retroperitoneal sarcoma can reduce the need for opioid painkillers. About 113 patients will receive either one or two injections of liposomal bupivacaine. The goal is to see if the extra shot helps more patients leave the hospital without an opioid prescription, lowering the risk of long-term use or addiction.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

113 people

The number who actually took part.

Started

Jun 2020

Expected to finish

Dec 2026

An estimate. End dates often move.

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: * Patients undergoing elective open sarcoma resection for potentially curative intent who would otherwise be treated with quadratus lumborum (QL) block + intravenous-patient controlled analgesia (IV-PCA) converted to oral pain medications (meds) (non-narcotic bundle + opioid pain pill) Exclusion Criteria: * Patients with current or past substance (drug or alcohol) abuse disorder * Laparoscopic or minimally invasive surgery * Cases in which anticipated discharge is on or before postoperative day 4

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Conditions

The condition(s) this trial relates to.

retroperitoneal sarcoma

As listed by the trial registrant

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

Retroperitoneal sarcoma

Contacts and locations

Locations

  • M D Anderson Cancer Center

    Houston, Texas, 77030, United States

More trials for these conditions

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