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Which painkiller works best after gynecologic cancer surgery? new trial aims to find out

NCT ID NCT06525740

Symptom relief Sponsor: Mayo Clinic 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares two opioid pain medicines—methadone given through an IV and hydromorphone injected into the spine—for pain relief after gynecologic cancer surgery. About 140 women will take part, and researchers will measure their pain scores and side effects like itching and breathing problems. The goal is to see if methadone works as well as the spinal injection for controlling pain after a major abdominal surgery.

What this could mean

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

Active substance
Methadone and hydromorphone
What this could lead to
If successful, this could show that methadone is as good as or better than intrathecal hydromorphone for pain control after gynecologic cancer surgery, potentially simplifying pain management.
What could go wrong
This is a small, early-phase trial (140 participants) comparing two existing drugs, so it won't produce a new treatment. Results may not apply to all patients or surgeries.

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.

Participants

About 140 people

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

Started

Sep 2024

Expected to finish

Sep 2029

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Female participants only

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: * Undergoing surgery with a laparotomy for gynecologic malignancy * Planned inpatient admission greater than 24 hours Exclusion Criteria: * Chronic pain requiring greater than 20 morphine milligram equivalents of opioid medications as an outpatient * Prolonged corrected QT interval (QTc) \> 500ms * Chronic kidney disease with estimated glomerular filtration rate (eGFR) \< 30 milliliters per minute (mL/min) * Documented cirrhosis * Preoperative platelets (PLT) \< 100 * Preoperative international normalized ratio (INR) \> 1.1 * Inappropriate cessation of anticoagulation medications prior to surgery * Intolerance to hydromorphone or methadone * Contraindication to administration of liposomal bupivacaine * Subsequent surgeries after index surgery

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Conditions

The condition(s) this trial relates to.

female reproductive organ cancer

As listed by the trial registrant

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

Malignant female reproductive system neoplasm

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

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

  3. 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 ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Mayo Clinic in Rochester

    RECRUITING

    Rochester, Minnesota, 55905, United States

    Contact Email: •••••@•••••

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