A Phase 2 interventional study of antihypertensive medications and Blood pressure measurement in Breast Cancer and Cardiotoxicity, sponsored by Memorial Sloan Kettering Cancer Center. Recruiting at 7 sites in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-14.
Sponsored by Memorial Sloan Kettering Cancer Center · Phase 2, Interventional, and Prevention
The purpose of this study to find out whether an intensive approach to treating high blood pressure during breast cancer treatment is safe and more effective than standard blood pressure treatment at lowering blood pressure levels and the risk of cardiotoxicity in patients with cancer. Other studies have shown lowering blood pressure improves the health of patients. However, these studies have not included people with cancer.
The PROTECT trial is testing a treatment strategy regarding intensive versus standard SBP goals, and is not testing specific medications.
14,825 studies on the registry are indexed under Breast Neoplasms; 3,319 are open to participants now.
This study's planned enrollment of 130 is above the median of 72 across 10,896 interventional studies indexed under Breast Neoplasms.
Browse Breast Neoplasms studies →Memorial Sloan Kettering Cancer Center is the lead sponsor of 1,964 studies on the registry; 327 are open to participants now.
Of its 135 completed or terminated interventional studies of FDA-regulated products, 71 (53%) have results posted.
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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.
(For participants in the CPET cohort): Able to complete an acceptable baseline CPET, in the absence of high-risk findings or other inappropriate response to exercise as determined by the PI, as defined by any of the following criteria:
Exclusion Criteria:
Cardiac comorbidity, including any of the following:
(For participants in the CPET cohort): Subjects must not have any of the following absolute to cardiopulmonary exercise testing:
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.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
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.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
NYHA class (heart failure)
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
SBP control will consist of treatment with antihypertensive medications titrated every 4 weeks for the first 3 months, and then every 3 months in months 4-12. SBP control will be achieved by titration of antihypertensive medications based upon a standardized algorithm and will be implemented during a 12-month study period. At the time of randomization, no antihypertensive treatments may be initiated or modified if SBP is ≥160 mm Hg. The clinical context may be considered at each visit to inform decision-making regarding treatment initiation or modification, at the discretion of the treating provider.
Other: antihypertensive medications · Diagnostic Test: Blood pressure measurement · Diagnostic Test: Echocardiogram · Other: Symptom-limited cardiopulmonary exercise test · Other: Quality of Life Measures · Diagnostic Test: Biomarkers
Patients randomized to intensive SBP control will be treated to achieve an SBP goal \<120 mm Hg, and patients randomized to standard SBP control will be treated to achieve an SBP goal \<140 mm Hg. Antihypertensive medications will be titrated on the basis of seated blood pressure measurements obtained after a 5-min rest period. All participants will be provided with dietary (e.g., 1500mg/d sodium restriction) and lifestyle recommendations as background therapy for optimizing HTN control.The clinical context may be considered at each visit to inform decision-making regarding treatment initiation or modification, at the discretion of the treating provider.
Other: antihypertensive medications · Diagnostic Test: Blood pressure measurement · Diagnostic Test: Echocardiogram · Other: Symptom-limited cardiopulmonary exercise test · Other: Quality of Life Measures · Diagnostic Test: Biomarkers
One or more of the following medications may be used in both randomization groups to achieve SBP goals: * Angiotensin converting enzyme inhibitors (ACEI) * Angiotensin receptor blockers (ARBs) * Beta-blockers (BB) * Thiazide-type diuretics * Calcium channel blockers * Aldosterone antagonists * Alpha1-receptor blockers. * Direct vasodilators * Loop diuretics
Home BP Monitoring (HBPM)-Throughout the study period, patients will perform HBPM at baseline, month 6, and month 12 (end of treatment). At each of these timepoints, HBPM will be performed for 7 days with 2 morning and 2 evening readings for each day (measured 1-min part).
At baseline, month 6, and month 12
Consecutive patients in each treatment group who meet the eligibility criteria for exercise testing will be offered to participate in CPET at the time of consent. Patients who agree will undergo CPET (baseline, 6 months, and 12 months) until the target accrual of 33 patients per group is met.
FACT-B, Fatigue Symptom Inventory (FSI), Patient Reported Outcomes Measurement Information System (PROMIS) Global Health Scale, Godin Leisure Time Exercise Questionnaire (GLTEQ),PROMIS Medication Adherence Scale. Given baseline, 3 months and 12 months.
Research blood samples will be collected at baseline, 3 months, and 6 months
mean change in systolic blood pressure (SBP) from baseline to 12 months
based upon in-office measurement
Time frame: 12 months
Plan to share: Yes — Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on clinicaltrials.gov when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made beginning 12 months after publication and for up to 36 months post publication. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to: crdatashare@mskcc.org.
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