New drug combo aims to stop breast surgery pain before it starts
NCT ID NCT07421427
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether adding amantadine or duloxetine to the standard painkiller pregabalin can prevent chronic pain after mastectomy. About 150 women undergoing breast cancer surgery will be randomly assigned to one of three drug combinations. The goal is to see if these add-ons lower the chance of developing long-term nerve pain and improve quality of life.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 150 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Jan 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 65 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age from 18 to 65 years. * American society of anesthesiologists (ASA) Physical status II, III. * Body mass index (BMI): (20-40) kg/m2. * Type of surgery: patients undergoing modified radical mastectomy for breast cancer. Exclusion Criteria: * Patient refusal. * Patients with Known sensitivity or contraindication to drug used in the study. * History of psychological disorders and/or chronic pain and drug abuse patients. * Previous administration of antidepressants, anticonvulsants, or opioids before surgery. * Severe respiratory or cardiac disorders. * Advanced liver or kidney disease. * Previous breast surgery
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
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Contacts and locations
Locations
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Cairo University
RECRUITINGCairo, 12613, Egypt
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