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Not yet recruitingNCT07764341Updated Aug 13, 2026

Supervised Exercise During Neoadjuvant Chemotherapy for Breast Cancer

An interventional study of Supervised exercise in Breast Cancer Early Stage Breast Cancer (Stage 1-3) and Breast Neoplasm Malignant Female, sponsored by King Hamad University Hospital, Bahrain. Not yet recruiting at 1 site in Bahrain. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-13.

Sponsored by King Hamad University Hospital, Bahrain · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

The goal of this clinical trial is to learn whether supervised exercise is practical and safe for women receiving chemotherapy before surgery for breast cancer.

The main questions it aims to answer are:

  • Can participants attend and complete the supervised exercise program during chemotherapy?
  • Is the exercise program safe?
  • Does exercise help maintain muscle mass, strength, quality of life, and chemotherapy delivery?

Participants will be assigned to either:

  • supervised aerobic and strength exercise during chemotherapy, or
  • usual care without a study exercise program. Researchers will compare the two groups before and after chemotherapy.
02

Conditions studied

  • Breast Cancer Early Stage Breast Cancer (Stage 1-3)
  • Breast Neoplasm Malignant Female

Keywords

  • breast cancer
  • sarcopenia
  • neoadjuvant chemotherapy
  • exercise
  • resistance training
  • body composition
  • physical activity
  • quality of life
  • skeletal muscle
  • pathologic complete response
  • relative dose intensity
03

In context

Breast Neoplasms

14,825 studies on the registry are indexed under Breast Neoplasms; 3,319 are open to participants now.

This study's planned enrollment of 80 is above the median of 72 across 10,896 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

King Hamad University Hospital, Bahrain is the lead sponsor of 9 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. confirmed invasive breast carcinoma, clinical stage I-III.
  2. Female, age ≥18 years.
  3. Planned to undergo standard chemotherapy of ≥4 months duration with curative intent, followed by definitive surgery. This includes common regimens such as taxane- and anthracycline-based chemotherapy or TCHP (docetaxel, carboplatin, trastuzumab, pertuzumab) for -positive disease.
  4. Availability of a baseline CT or PET/CT scan (as part of routine diagnosis or staging) that includes axial images at the third lumbar vertebra (L3) level, performed prior to starting NACT.
  5. Anticipated post-NACT CT or PET/CT scan (e.g. for re-staging) that includes the L3 level, to be performed after completion of NACT and before surgery per standard care practice.
  6. (ECOG) performance status 0-2.
  7. Cleared by treating oncologist and physiotherapist as medically able to participate in a moderate-intensity exercise program (e.g. able to walk independently with or without an assistive device and perform basic resistance exercises).
  8. Able and willing to provide written .
  9. Able to understand study instructions and complete questionnaires.

Exclusion criteria

Exclusion Criteria:

  1. Evidence of distant disease (stage IV) or treatment plan not aiming for curative intent.
  2. Unstable or severe cardiac, pulmonary, or other systemic comorbidities that would make moderate exercise unsafe, such as unstable angina or recent myocardial infarction, decompensated heart failure, uncontrolled severe arrhythmia, uncontrolled severe hypertension, or severe symptomatic lung disease.
  3. Major musculoskeletal or neurological conditions that would preclude safe participation in supervised exercise (e.g. unstable orthopedic injuries, severe neuropathy or neurologic deficit, or recent major surgery not yet recovered).
  4. Current second active (excluding second localized early breast cancer).
  5. Regular participation in ≥150 minutes per week of moderate-vigorous aerobic activity and ≥2 resistance training sessions per week in the 3 months before cancer diagnosis.
  6. Baseline imaging not available or not including L3, or patient unlikely to have a post-NACT scan including L3 (e.g. if they refuse imaging).
  7. CT images of insufficient quality (e.g. severe artifacts or truncated field of view at L3) that would prevent accurate muscle measurement.
  8. Pregnant or breastfeeding at the time of enrollment.
  9. Significant cognitive impairment, psychiatric disorder, or language barrier that would prevent or compliance with the protocol.
  10. Any other condition or circumstance that, in the opinion of the investigator, would make participation not in the patient's best interest or would compromise the scientific integrity of the study.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

HER2

HER2 is a protein, made from the ERBB2 gene, that drives the growth of some cancers. A study may look for a level of the protein, extra copies of the gene, or a particular change in it.

In breast cancer, protein tests are read as HER2-positive, HER2-low or HER2-negative; other cancers use their own rules. Check which test result the study requires.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
80 participants (estimated)

Study arms

  • Experimental
    Supervised exercise

    Supervised combined aerobic and resistance exercise during neoadjuvant chemotherapy (NACT)

    Other: Supervised exercise

  • No intervention
    Control

    Usual oncologic care during neoadjuvant chemotherapy

Interventions

  • OtherSupervised exercise

    Supervised combined aerobic and resistance exercise during neoadjuvant chemotherapy, delivered as two supervised sessions per week throughout the course of NACT.

06

What researchers measure

Primary outcomes

  1. Feasibility of exercise intervention during neoadjuvant chemotherapy

    Exercise adherence will be assessed in the exercise arm using physiotherapist-maintained session logs. Adherence is defined as attendance at ≥65% of prescribed supervised sessions during NACT, calculated as (sessions attended / sessions prescribed) × 100%. Prescribed sessions are the supervised sessions scheduled for the participant from randomization until completion of NACT or withdrawal from the study, whichever occurs first. The intervention will be considered feasible if at least 50% of participants randomized to the exercise arm meet the adherence threshold.

    Time frame: From initiation of the supervised exercise program through completion of neoadjuvant chemotherapy. The exercise program will continue throughout the full course of neoadjuvant chemotherapy, approximately 4-6 months depending on the treatment regimen.

Secondary outcomes

  1. CT-derived body composition

    Skeletal muscle index (SMI) and subcutaneous fat index (SFI) will be measured on routine baseline and post-NACT computerized tomography (CT) images. SMI is defined as the cross-sectional area of skeletal muscle at the third lumbar vertebra (L3) on CT (in square centimeters) normalized for height (meters squared), yielding units of cm²/m². SFI is defined as the cross-sectional area of subcutaneous fat at the third lumbar vertebra (L3) on CT (in square centimeters) normalized for height (meters squared), yielding units of cm²/m².

    Time frame: SMI and SFI will be assessed at two time points: at baseline (pre-NACT) and at completion of NACT, which is expected to occur approximately 4-6 months after initiation of NACT and prior to surgery (post-NACT).

  2. Pathologic Complete Response (pCR)

    pCR is defined as the absence of residual invasive cancer in the resected breast specimen and lymph nodes following NACT (allowing for residual in situ carcinoma), commonly denoted ypT0/Tis, ypN0. pCR will be determined based on the post-surgical pathology report.

    Time frame: Within one month after surgery.

  3. Chemotherapy Delivery and Dose Intensity

    Relative Dose Intensity (RDI): RDI is defined as the delivered dose intensity (mg/m²/week for each cytotoxic drug) expressed as a percentage of the planned dose intensity. Dose reductions: Any reduction in chemotherapy dose below the initially planned dose (for reasons other than weight change) will be recorded. Cycle delays: Any delay of a chemotherapy cycle by ≥7 days from the intended date (for toxicity or other patient factors) will be recorded. Early discontinuation: If a patient permanently discontinues NACT before completing the planned number of cycles (due to toxicity, patient choice, etc.), that will be noted.

    Time frame: From initiation through completion of NACT, approximately 4-6 months.

  4. European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 Scores:

    Quality of life will be measured using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30, version 3 (EORTC QLQ-C30). Scores for each scale range from 0 to 100. Higher scores on the global health status and functioning scales indicate better health or functioning, while higher scores on the symptom scales indicate greater symptom severity.

    Time frame: At baseline (pre-NACT) and at completion of NACT, which is expected to occur approximately 4-6 months after initiation of NACT and prior to surgery (post-NACT).

  5. European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Breast Cancer Module 23 Scores:

    Breast cancer-specific quality of life will be measured using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Breast Cancer Module 23 (EORTC QLQ-BR23). Scores for each scale range from 0 to 100. Higher scores on the functioning scales indicate better functioning, while higher scores on the symptom scales indicate greater symptom severity.

    Time frame: At baseline (pre-NACT) and at completion of NACT, which is expected to occur approximately 4-6 months after initiation of NACT and prior to surgery (post-NACT).

  6. Muscle strength

    Grip (in kg) strength will be assessed using handgrip dynamometry.

    Time frame: Grip strength will be measured at baseline (pre-NACT) and at completion of NACT, which is expected to occur approximately 4-6 months after initiation of NACT and prior to surgery (post-NACT).

  7. Safety and adverse events

    Safety will be evaluated by tracking adverse events (AEs) and serious adverse events (SAEs) throughout the study, particularly any events related to the exercise intervention. All participants will be assessed at each clinical visit for adverse events, and exercise session logs will also capture any symptoms or events during or after exercise.

    Time frame: From initiation of NACT through completion of NACT, approximately 4-6 months.

  8. Radiologic response

    Tumor response on imaging will be assessed by RECIST 1.1 criteria on post-NACT scans.

    Time frame: After completion of NACT and prior to surgery, approximately 4-6 months after initiation of NACT.

07

Study locations

1 site
  • Bahrain Oncology Center
    Al Muharraq, Bahrain
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Sep 2027, 12 months later.

Of 2,661 non-industry interventional studies with no phase under Breast Neoplasms, half reached primary completion within 33 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 66. This study's planned 12 months is below that.

Counting every sponsor, half of 2,771 studies reached it within 33 months; a quarter within 15 and three quarters within 66.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 11, 2026
First posted
Aug 13, 2026
StartEst.
Sep 2026
Primary completionEst.
Sep 2027
CompletionEst.
Sep 2027
Last update
Aug 13, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 13, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07764341
Lead sponsor
King Hamad University Hospital, Bahrain
Collaborators
Bahrain Oncology Center
Responsible party
Dr. Zeki Surmeli (Consultant Medical Oncologist, King Hamad University Hospital, Bahrain) — Principal investigator
First posted
Aug 13, 2026
Start date
Sep 2026 (estimated)
Primary completion
Sep 2027 (estimated)
Completion
Sep 2027 (estimated)
Last update
Aug 13, 2026

Study contacts

Zeki G Surmeli
Contact
zeki.surmeli@gmail.com
+97339362234

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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