Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Stage IIA Breast Cancer: early-phase trial registry
1 of 18 indexed Stage IIA Breast Cancer trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #953 of 28,707 conditions by registered trial count.
18 US clinical trials · 1 currently recruiting · #953 of 28,707 conditions by registered trial count
Stage IIA Breast Cancer: 18 US clinical trials tracked, 1 recruiting.
Stage IIA Breast Cancer is the subject of 18 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 3 are in Phase 3-4 (later-stage) and 8 in Phase 1-2 (earlier-stage). The most active sponsor is City of Hope Medical Center, running 3 of these trials.
Enrollment posture brief
Registry condition stage-iia-breast-cancer
OPEN 1 | RECR 6% | LATE 3 | EARLY 8 | RANK #953 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Dry Eye Syndromes (5% recruiting · 19 trials)
Stage IIA Breast Cancer lists 1 open slots (6% of 18 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Stage IIA Breast Cancer on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Stage IIA Breast Cancer is recruiting below its size-band peers.
1 of 18 indexed trials (5.6%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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One sponsor concentrates Stage IIA Breast Cancer research.
City of Hope Medical Center accounts for 3 of 18 trials (16.7%). 14 distinct sponsors appear on at least one study for this condition label.
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Most Stage IIA Breast Cancer trials plan to enrol fewer than 100 people.
Median target enrolment is 88 among the 18 trials that report a genuine target (sentinel values excluded). 11 of those (61.1%) plan for fewer than 100 participants.
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Stage IIA Breast Cancer research is mostly interventional.
16 interventional and 2 observational studies make up this index (88.9% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
18 total, page 1 of 1
Trastuzumab Deruxtecan Alone or in Combination With Anastrozole for the Treatment of Early Stage HER2 Low, Hormone Receptor Positive Breast Cancer
Jonsson Comprehensive Cancer Center
NCT04553770
Intraoperative Radiation Therapy in Treating Patients With Breast Cancer Undergoing Breast-Conserving Surgery
University of California, San Francisco
NCT01570998
Hypofractionated Radiation Therapy After Mastectomy in Preventing Recurrence in Patients With Stage IIa-IIIa Breast Cancer
Alliance for Clinical Trials in Oncology
NCT03414970
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel With or Without Carboplatin in Treating Patients With Triple-Negative Breast Cancer
NRG Oncology
NCT02488967
Platinum in Treating Patients With Residual Triple-Negative Breast Cancer Following Neoadjuvant Chemotherapy
ECOG-ACRIN Cancer Research Group
NCT02445391
Intraoperative Electron Beam Radiotherapy Boost in Treating Patients With Stage I-II Breast Cancer Undergoing Surgery With Reconstruction
Ohio State University Comprehensive Cancer Center
NCT02927912
Paclitaxel & Cyclophosphamide With or Without Trastuzumab Before Surgery in Treating Previously Untreated Breast Cancer
University of Nebraska
NCT01750073
Carboplatin and Paclitaxel Albumin-Stabilized Nanoparticle Formulation Before Surgery in Treating Patients With Locally Advanced or Inflammatory Triple Negative Breast Cancer
City of Hope Medical Center
NCT01525966
Pertuzumab, Trastuzumab, and Paclitaxel Albumin-Stabilized Nanoparticle Formulation in Treating Patients With HER2-Positive Advanced Breast Cancer
City of Hope Medical Center
NCT01730833
Pegylated Liposomal Doxorubicin Hydrochloride and Carboplatin Followed by Surgery and Paclitaxel in Treating Patients With Triple Negative Stage II-III Breast Cancer
Rutgers, The State University of New Jersey
NCT02315196
Neoadjuvant Pembrolizumab + Decitabine Followed by Std Neoadj Chemo for Locally Advanced HER2- Breast Ca
Virginia Commonwealth University
NCT02957968
Accelerated Partial Breast Radiation Therapy Using High-Dose Rate Brachytherapy in Treating Patients With Early Stage Breast Cancer After Surgery
Rutgers, The State University of New Jersey
NCT02526498
Functional Magnetic Resonance Imaging in Assessing Affect Reactivity and Regulation in Patients With Stage 0-III Breast Cancer
Stanford University
NCT03050463
Exercise Intervention in Preventing Breast Cancer Recurrence in Postmenopausal Breast Cancer Survivors
City of Hope Medical Center
NCT02235051
MRI and Cardio-Pulmonary Exercise Testing in Evaluating Exercise Intolerance in Patients With Stage I-III Breast Cancer After Chemotherapy Treatment
Wake Forest University Health Sciences
NCT02702830
FLT PET in Measuring Treatment Response in Patients With Newly Diagnosed Estrogen Receptor-Positive, HER2-Negative Stage I-III Breast Cancer
University of Washington
NCT01928186
Computerized Cognitive Retraining in Improving Cognitive Function in Breast Cancer Survivors
Fred Hutchinson Cancer Center
NCT02662335
Aerobic and Strength Training Exercise in Improving Fitness and Arm Health During and After Radiation Therapy in Patients With Stage II-III Breast Cancer
Ohio State University Comprehensive Cancer Center
NCT03102866
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 8 |
| Phase 3 | 3 |
Top Sponsors
Named interventions
Most-linked intervention names on Stage IIA Breast Cancer records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Stage IIA Breast Cancer trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Stage IIA Breast Cancer page
18 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 Stage IIA Breast Cancer trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- City of Hope Medical Center sponsors the most Stage IIA Breast Cancer trials on record, review their full trial history before evaluating a specific study. See City of Hope Medical Center's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Stage IIA Breast Cancer condition card totals 18 registered trials; most-linked intervention Questionnaire Administration; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.