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Combination Chemotherapy With or Without Trastuzumab in Treating Patients With Stage II or Stage III Breast Cancer

Randomized Phase II Study of Docetaxel, Adriamycin, and Cytoxan (TAC) Versus Adriamycin/Cytoxan, Followed by Abraxane/Carboplatin (ACAC) +/- Trastuzumab as Neoadjuvant Therapy for Patients With Stage II-III Breast Cancer

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00295893
Enrollment
121
Registered
2006-02-24
Start date
2005-09-27
Completion date
2026-08-11
Last updated
2025-09-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Keywords

inflammatory breast cancer, stage II breast cancer, stage IIIA breast cancer, stage IIIB breast cancer, stage IIIC breast cancer, male breast cancer, Paget disease of the breast with invasive ductal carcinoma, invasive ductal breast carcinoma with predominant intraductal component, invasive ductal breast carcinoma, medullary ductal breast carcinoma with lymphocytic infiltrate, comedo ductal breast carcinoma, invasive lobular breast carcinoma with predominant in situ component, invasive lobular breast carcinoma, mucinous ductal breast carcinoma, papillary ductal breast carcinoma, tubular ductal breast carcinoma

Brief summary

RATIONALE: Drugs used in chemotherapy work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells. Monoclonal antibodies, such as trastuzumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Giving combination chemotherapy with or without trastuzumab before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. It is not yet known whether combination chemotherapy is more effective with or without trastuzumab in treating breast cancer. PURPOSE: This randomized phase II trial is comparing two different regimens of combination chemotherapy given together with or without trastuzumab to see how well they work in treating patients with stage II or stage III breast cancer.

Detailed description

OBJECTIVES: Primary * Compare 2 neoadjuvant chemotherapy regimens (docetaxel, doxorubicin hydrochloride, and cyclophosphamide \[TAC\] vs doxorubicin and cyclophosphamide followed by paclitaxel and carboplatin \[ACAC\]), in terms of toxicities and effectiveness as defined by the pathological complete remission rate, in patients with non HER2/neu overexpressing stage II or III breast cancer. * Evaluate the probability of achieving a pathological complete remission when adding trastuzumab (Herceptin®) to ACAC in the subset of patients with HER2/neu overexpressing stage II or III breast cancer. Secondary * Identify prognostic and predictive markers of outcome, recurrence, and targets of therapy. OUTLINE: This is a randomized study. Patients with non HER2/neu overexpressing tumors are randomized to 1 of 2 treatment arms. Patients with HER2/neu overexpressing tumors are assigned to arm III. * Arm I: Patients receive doxorubicin hydrochloride IV, cyclophosphamide IV, and docetaxel IV on day 1. Treatment repeats every 21 days for 6 courses. * Arm II: Patients receive doxorubicin hydrochloride IV and cyclophosphamide IV on day 1; treatment repeats every 2 weeks for 4 courses. Patients then receive carboplatin IV on day 1 and paclitaxel IV on days 1, 8, and 15; treatment with carboplatin and paclitaxel repeats every 4 weeks for 3 courses. * Arm III: Patients receive chemotherapy as in arm II. They also receive trastuzumab (Herceptin®) IV weekly, beginning with the first doses of paclitaxel and carboplatin. Within 4 weeks after completion of chemotherapy with or without trastuzumab (Herceptin®), all patients undergo surgery. PROJECTED ACCRUAL: A total of 105 patients will be accrued for this study.

Interventions

DRUGcyclophosphamide

Given IV

DRUGdocetaxel

Given IV

DRUGdoxorubicin hydrochloride

Given IV

BIOLOGICALTrastuzumab

Given IV

DRUGCarboplatin

Given IV

DRUGPaclitaxel

Given IV

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
City of Hope Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 120 Years
Healthy volunteers
No

Inclusion criteria

DISEASE CHARACTERISTICS: * Histologically proven infiltrating ductal or lobular breast carcinoma * Stage II or III disease * Inflammatory breast cancer allowed * Hormone-receptor status not specified PATIENT CHARACTERISTICS: * ECOG performance status \< 2 * Male or female * Menopausal status not specified (for female patients) * Absolute neutrophil count ≥ 1,500/mm\^3 * Platelet count ≥ 100,000/mm\^3 * Bilirubin normal (except for patient's with Gilbert's disease) * Creatinine ≤ 1.2 mg/dL * Creatinine clearance ≥ 70 mL/min * Ejection fraction ≥ 50% on MUGA * No neuropathy ≥ grade 1 * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use effective nonhormonal contraception * No prior malignant disease within the past 5 years, excluding: * Squamous cell or basal cell skin carcinoma * Stage I or in situ cervical carcinoma * No noninvasive (in situ) breast carcinoma within the past 5 years PRIOR CONCURRENT THERAPY: * At least 5 years since prior antiestrogen treatment for any indication other than breast cancer prevention (tamoxifen, raloxifene, or an aromatase inhibitor) * No prior radiotherapy to the chest wall

Design outcomes

Primary

MeasureTime frameDescription
Count of Patients With Pathologic Complete Response (pCR)At the time of surgery within 4 weeks of the end of chemotherapy, up to 10 monthspCR was defined as no evidence of residual invasive cancer (or very few scattered tumor cells) in primary tumor and lymph nodes.
Count of Patients With Residual Cancer Burden (RCB) Scores of 0 or 1.At the time of surgery within 4 weeks of the end of chemotherapy, up to 10 months.RCB score is determined using information on the size of the tumor and the extent of tumor cells in the breast and axillary lymph nodes after neoadjuvant therapy. The higher the RCB score, the more residual breast cancer there is in the breast and lymph nodes: RCB-0 = No residual breast cancer RCB-I = Small amount of residual breast cancer RCB-II = Moderate amount of residual breast cancer RCB-III = Extensive (a lot of) residual breast cancer

Countries

United States

Participant flow

Participants by arm

ArmCount
Docetaxel, Doxorubicin Hydrochloride, and Cyclophosphamide
Patients receive 50 mg/m2 doxorubicin hydrochloride IV, 500 mg/m2 cyclophosphamide IV, and 75 mg/m2 docetaxel IV on day 1. Treatment repeats every 21 days for 6 courses.
37
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel and Carboplatin
Patients receive 60 mg/m2 doxorubicin hydrochloride IV and 600 mg/m2 cyclophosphamide IV on day 1; treatment repeats every 2 weeks for 4 courses. Patients then receive AUC 2 carboplatin IV on day 1 and paclitaxel IV on days 1, 8, and 15; treatment with carboplatin and 100 mg/m2 paclitaxel repeats every 4 weeks for 3 courses.
40
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel, Carboplatin and Trastuzumab
Patients receive chemotherapy as in arm II. They also receive 2 mg/kg trastuzumab (Herceptin®) IV weekly, beginning with the first doses of paclitaxel and carboplatin.
44
Total121

Baseline characteristics

CharacteristicDocetaxel, Doxorubicin Hydrochloride, and CyclophosphamideDoxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel and CarboplatinDoxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel, Carboplatin and TrastuzumabTotal
Age, Continuous50 years49 years52 years50 years
Race/Ethnicity, Customized
African American
1 Participants3 Participants3 Participants7 Participants
Race/Ethnicity, Customized
American Native
1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Asian
2 Participants1 Participants10 Participants13 Participants
Race/Ethnicity, Customized
Hispanic
14 Participants19 Participants12 Participants45 Participants
Race/Ethnicity, Customized
White
19 Participants17 Participants19 Participants55 Participants
Region of Enrollment
United States
37 participants40 participants44 participants121 participants
Sex: Female, Male
Female
37 Participants40 Participants44 Participants121 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
2 / 374 / 404 / 44
other
Total, other adverse events
37 / 3740 / 4044 / 44
serious
Total, serious adverse events
8 / 375 / 408 / 44

Outcome results

Primary

Count of Patients With Pathologic Complete Response (pCR)

pCR was defined as no evidence of residual invasive cancer (or very few scattered tumor cells) in primary tumor and lymph nodes.

Time frame: At the time of surgery within 4 weeks of the end of chemotherapy, up to 10 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Docetaxel, Doxorubicin Hydrochloride, and CyclophosphamideCount of Patients With Pathologic Complete Response (pCR)6 Participants
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel and CarboplatinCount of Patients With Pathologic Complete Response (pCR)4 Participants
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel, Carboplatin and TrastuzumabCount of Patients With Pathologic Complete Response (pCR)22 Participants
Primary

Count of Patients With Residual Cancer Burden (RCB) Scores of 0 or 1.

RCB score is determined using information on the size of the tumor and the extent of tumor cells in the breast and axillary lymph nodes after neoadjuvant therapy. The higher the RCB score, the more residual breast cancer there is in the breast and lymph nodes: RCB-0 = No residual breast cancer RCB-I = Small amount of residual breast cancer RCB-II = Moderate amount of residual breast cancer RCB-III = Extensive (a lot of) residual breast cancer

Time frame: At the time of surgery within 4 weeks of the end of chemotherapy, up to 10 months.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Docetaxel, Doxorubicin Hydrochloride, and CyclophosphamideCount of Patients With Residual Cancer Burden (RCB) Scores of 0 or 1.11 Participants
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel and CarboplatinCount of Patients With Residual Cancer Burden (RCB) Scores of 0 or 1.10 Participants
Doxorubicin Hydrochloride and Cyclophosphamide Followed by Paclitaxel, Carboplatin and TrastuzumabCount of Patients With Residual Cancer Burden (RCB) Scores of 0 or 1.28 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026