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New study aims to predict and prevent pain after mastectomy

NCT ID NCT04989179

Knowledge-focused Sponsor: Singapore General Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 follows 220 women who had breast cancer surgery to understand why some develop persistent pain afterward. Researchers will track pain, mood, and daily function for 4 months to identify risk factors. The goal is to help doctors counsel patients and take steps to reduce the chance of chronic pain.

What this could mean

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

What this could lead to
If successful, this could help doctors identify women at high risk for chronic pain after mastectomy and take steps to prevent it.
What could go wrong
This is an observational study, not a treatment trial. It will not test any new drug or therapy, so it cannot directly improve outcomes.

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.

Participants

About 220 people

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

Started

Oct 2021

Expected to finish

Dec 2027

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.

Who is studied

Surgeons at the breast clinic listing patients for surgery will inform patients of the study. The clinical research coordinators will approach the potential study participants referred by the study team members and other attending pain clinicians.

Ages

21 to 80 years

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: * Age 21-80 years old * Provided consent for the study * Types of breast surgery included: single or bilateral site mastectomies, with or without axillary clearance, wide excision with axillary clearance, radical mastectomies with or without flap surgery. Exclusion Criteria: 1. Age below 21 or above 80 years old 2. Male patients 3. Cognitive impairment/ uncommunicative patients.

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm

As listed by the trial registrant

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

Breast cancer Post-mastectomy pain syndrome

Contacts and locations

Locations

  • Changi General Hospital

    Singapore, Singapore

  • KK Women's and Children's Hospital

    Singapore, Singapore

  • Singapore General hospital

    Singapore, Singapore, 169608, Singapore

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