A Phase 3 interventional study of Docetaxel and Doxorubicin in Breast Cancer, sponsored by US Oncology Research. Completed at 95 sites in United States. Open to female participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2023-03-02.
Sponsored by US Oncology Research · Phase 3, Interventional, and Treatment
The purpose of this research study is to find out what effects (good and bad) TC or TAC has on early stage HER2- breast cancer.
Both TAC (docetaxel, doxorubicin, and cyclophosphamide) and TC (docetaxel and cyclophosphamide) are established adjuvant chemotherapy regimens for early stage breast cancer. TAC, however, due to the inclusion of the anthracycline doxorubicin, carries a high risk of hematologic and cardiotoxic adverse effects. Substantial evidence supports the concept that early stage HER2-negative breast cancers will benefit similarly from anthracycline-based adjuvant and non-anthracycline-based chemotherapy.
Further, approximately 0 to 9% of HER2-negative breast cancers have alterations in the TOP2A gene, which may predict for benefit from anthracycline-based chemotherapy.
We hypothesize that 6 cycles of TC versus 6 cycles of TAC will have similar efficacy in the treatment of early stage HER2-negative breast cancer and that TC will have less toxicity. If this hypothesis were upheld and the anthracycline doxorubicin could be eliminated from the regimen while obtaining similar efficacy in this population of patients, it would not only be an important advance in the understanding of the biology of cancer, but it would also be of significant clinical benefit to women with breast cancer.
12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.
This study's enrollment of 1,961 is above the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.
Browse Breast Neoplasms studies →US Oncology Research is the lead sponsor of 29 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
A woman will be eligible for inclusion in this study if she meets all of the following criteria:
Meets 1 of the 3 following criteria:
Exclusion Criteria:
A woman will be excluded from this study if she meets any of the following criteria:
docetaxel 75 mg/m2 and cyclophosphamide 600 mg/m2
Drug: Docetaxel · Drug: Cyclophosphamide
doxorubicin 50 mg/m2, cyclophosphamide 500 mg/m2 and docetaxel 75 mg/m2
Drug: Docetaxel · Drug: Doxorubicin · Drug: Cyclophosphamide
Docetaxel 75 mg/m2 IV over 1 hour on Day 1 followed by cyclophosphamide
Also known as: Taxotere
• Doxorubicin 50 mg/m2 IV push over 5-15 minutes via sidearm through a running IV line on Day 1, followed by cyclophosphamide 500 mg/m2 IV over 15-30 minutes on Day 1, followed by docetaxel 75 mg/m2 IV over 1 hour on Day 1. Administer pegfilgrastim 6 mg SC on Day 2 (or filgrastim 5 mcg/kg SC per standard of care).
Also known as: Adriamycin
600 mg/m2 IV over 15-30 minutes on Day 1.
Also known as: Cytoxan
3-year Invasive Disease-free Survival (IDFS) Among Analyzed ITT Patients
The primary objective of the study is to compare the 3-year invasive disease-free survival (IDFS) of adjuvant TC versus TAC as treatment for early stage HER2-negative breast cancer among analyzed ITT patients. ITT patients are all patients who were randomized, whether or not they followed protocol. IDFS, defined as the time from the date of randomization to local recurrence following mastectomy, invasive local recurrence in the ipsilateral breast following lumpectomy, regional recurrence, distant recurrence, invasive contralateral breast cancer, second primary cancer (other than squamous or basal cell carcinoma of the skin, melanoma in situ, carcinoma in situ of the cervix, colorectal carcinoma in situ, or lobular carcinoma in situ of the breast), or death from any cause prior to recurrence or second primary cancer. Patients who have not had any such event at the time of data analysis will be censored at the last date they were known to be event-free.
Time frame: 3 years from randomization into study
3-year Invasive Disease-free Survival (IDFS) Among Per-protocol Patients
The primary objective of the study is to compare the 3-year invasive disease-free survival (IDFS) of adjuvant TC versus TAC as treatment for early stage HER2-negative breast cancer among per-protocol patients. Per-protocol only includes those patients who were randomized and received treatment as outlined in the protocol.
Time frame: 3 years from randomization into study
3-year DFS-DCIS, OS and RFI Among Analyzed ITT Patients
To compare disease-free survival-ductal carcinoma in situ (DFS-DCIS),overall survival (OS) and recurrence free interval (RFI) of TC with TAC. DFS-DCIS, defined as the time from the date of randomization to local recurrence following mastectomy, local recurrence in the ipsilateral breast following lumpectomy (invasive or non-invasive), regional recurrence, distant recurrence, contralateral breast cancer (invasive or non-invasive), second primary cancer (other than squamous or basal cell carcinoma of the skin, melanoma in situ, carcinoma in situ of the cervix, colorectal carcinoma in situ, or lobular carcinoma in situ of the breast), or death from any cause prior to recurrence or second primary cancer. Patients who have not had any such event at the time of data analysis will be censored at the last date they were known to be event-free.
Time frame: 3 years from randomization into study
3-year DFS-DCIS, OS and RFI Among Per-protocol Patients.
To compare disease-free survival-ductal carcinoma in situ (DFS-DCIS),overall survival (OS) and recurrence free interval (RFI) of TC with TAC among per protocol patients.
Time frame: 3 years from randomization into study
Number and Frequency of Participants by TOP2A Status by Study Treatment
To evaluate the effectiveness of TC and TAC in TOP2A altered (amplified, deleted, or overexpressed at the protein level) early stage HER2-negative breast cancer
Time frame: 10 years (from baseline to end of study participation)
3-year DFS Stratified by TOP2A Among TC Arm
To evaluate DFS among TC in TOP2A altered (amplified, deleted, or overexpressed at the protein level) early stage HER2-negative breast cancer.
Time frame: 3 years from randomization into study
3-year DFS Stratified by TOP2A Among TAC Arm
To evaluate DFS among TAC in TOP2A altered (amplified, deleted, or overexpressed at the protein level) early stage HER2-negative breast cancer.
Time frame: 3 years from randomization into study
| Milestone | TC Arm | TAC Arm |
|---|---|---|
| Started | 981 | 980 |
| Completed | 969 | 965 |
| Not completed | 12 | 15 |
| Withdrew: Lost to follow-up | 12 | 15 |
The primary objective of the study is to compare the 3-year invasive disease-free survival (IDFS) of adjuvant TC versus TAC as treatment for early stage HER2-negative breast cancer among analyzed ITT patients. ITT patients are all patients who were randomized, whether or not they followed protocol. IDFS, defined as the time from the date of randomization to local recurrence following mastectomy, invasive local recurrence in the ipsilateral breast following lumpectomy, regional recurrence, distant recurrence, invasive contralateral breast cancer, second primary cancer (other than squamous or basal cell carcinoma of the skin, melanoma in situ, carcinoma in situ of the cervix, colorectal carcinoma in situ, or lobular carcinoma in situ of the breast), or death from any cause prior to recurrence or second primary cancer. Patients who have not had any such event at the time of data analysis will be censored at the last date they were known to be event-free.
| percentage of participants | TC Arm | TAC Arm |
|---|---|---|
| 3-year Invasive Disease-free Survival (IDFS) Among Analyzed ITT Patients | 91.1 (89.1 to 92.8) | 93.2 (91.3 to 94.6) |
The primary objective of the study is to compare the 3-year invasive disease-free survival (IDFS) of adjuvant TC versus TAC as treatment for early stage HER2-negative breast cancer among per-protocol patients. Per-protocol only includes those patients who were randomized and received treatment as outlined in the protocol.
| percentage of participants | TC Arm | TAC Arm |
|---|---|---|
| 3-year Invasive Disease-free Survival (IDFS) Among Per-protocol Patients | 91.3 (89.3 to 93.0) | 93.2 (91.3 to 94.7) |
To compare disease-free survival-ductal carcinoma in situ (DFS-DCIS),overall survival (OS) and recurrence free interval (RFI) of TC with TAC. DFS-DCIS, defined as the time from the date of randomization to local recurrence following mastectomy, local recurrence in the ipsilateral breast following lumpectomy (invasive or non-invasive), regional recurrence, distant recurrence, contralateral breast cancer (invasive or non-invasive), second primary cancer (other than squamous or basal cell carcinoma of the skin, melanoma in situ, carcinoma in situ of the cervix, colorectal carcinoma in situ, or lobular carcinoma in situ of the breast), or death from any cause prior to recurrence or second primary cancer. Patients who have not had any such event at the time of data analysis will be censored at the last date they were known to be event-free.
| percentage of participants | TC Arm | TAC Arm |
|---|---|---|
| 3-year DFS-DCIS | 90.9 (88.8 to 92.6) | 93.0 (91.1 to 94.5) |
| 3-year OS | 96.8 (95.4 to 97.7) | 96.8 (95.5 to 97.8) |
| 3-year RFI | 91.9 (90.0 to 93.5) | 94.5 (92.8 to 95.9) |
To compare disease-free survival-ductal carcinoma in situ (DFS-DCIS),overall survival (OS) and recurrence free interval (RFI) of TC with TAC among per protocol patients.
| percentage of participants | TC Arm | TAC Arm |
|---|---|---|
| 3-year DFS-DCIS | 91.1 (89.0 to 92.8) | 93.0 (91.1 to 94.5) |
| 3-year OS | 96.8 (95.5 to 97.8) | 96.8 (95.4 to 97.8) |
| 3-year RFI | 92.1 (90.2 to 93.7) | 94.5 (92.8 to 95.8) |
To evaluate the effectiveness of TC and TAC in TOP2A altered (amplified, deleted, or overexpressed at the protein level) early stage HER2-negative breast cancer
| Participants | TC Arm | TAC Arm |
|---|---|---|
| Amplification | 14 | 14 |
| Deletion | 131 | 128 |
| Normal | 479 | 489 |
To evaluate DFS among TC in TOP2A altered (amplified, deleted, or overexpressed at the protein level) early stage HER2-negative breast cancer.
| percentage of participants | Amplification | Deletion | Normal |
|---|---|---|---|
| 3-year DFS Stratified by TOP2A Among TC Arm | 85.1 (52.3 to 96.1) | 82.8 (75.1 to 88.3) | 93.8 (91.2 to 95.6) |
To evaluate DFS among TAC in TOP2A altered (amplified, deleted, or overexpressed at the protein level) early stage HER2-negative breast cancer.
| percentage of participants | Amplification | Deletion | Normal |
|---|---|---|---|
| 3-year DFS Stratified by TOP2A Among TAC Arm | 100 (100 to 100) | 90.9 (84.2 to 94.9) | 93.2 (90.6 to 95.2) |
Collected over From Baseline to 30 days after last dose of study treatment, approximately 22 weeks. All-Cause Mortality was from baseline to end of study participation, approximately 10 years.. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| TC Arm | 110/969 (11.4%) | 264/969 (27.2%) | 680/969 (70.2%) |
| TAC Arm | 88/965 (9.1%) | 330/965 (34.2%) | 746/965 (77.3%) |
| Event | TC Arm | TAC Arm |
|---|---|---|
| FEBRILE NEUTROPENIAInfections and infestations | 42/969 | 44/965 |
| FEVERInfections and infestations | 21/969 | 13/965 |
| NEUTROPHIL COUNTBlood and lymphatic system disorders | 10/969 | 18/965 |
| DEHYDRATIONGastrointestinal disorders | 11/969 | 18/965 |
| VOMITINGGastrointestinal disorders | 8/969 | 14/965 |
| DIARRHEAGastrointestinal disorders | 11/969 | 12/965 |
| NAUSEAGastrointestinal disorders | 7/969 | 10/965 |
| INFECTION - OTHER (SPECIFY)Infections and infestations | 9/969 | 10/965 |
| ABDOMINAL PAINInvestigations | 7/969 | 10/965 |
| THROMBOSISVascular disorders | 1/969 | 9/965 |
| Event | TC Arm | TAC Arm |
|---|---|---|
| ALOPECIASkin and subcutaneous tissue disorders | 543/969 | 538/965 |
| FATIGUEGeneral disorders | 470/969 | 498/965 |
| NAUSEAGastrointestinal disorders | 326/969 | 413/965 |
| DIARRHEAGastrointestinal disorders | 251/969 | 331/965 |
| NEUTROPENIABlood and lymphatic system disorders | 294/969 | 243/965 |
| NEUROPATHYNervous system disorders | 203/969 | 171/965 |
| EDEMABlood and lymphatic system disorders | 188/969 | 142/965 |
| PAINInvestigations | 185/969 | 139/965 |
| ANEMIABlood and lymphatic system disorders | 164/969 | 183/965 |
| CONSTIPATIONGastrointestinal disorders | 153/969 | 175/965 |
| Age, Continuous(years) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| Mean | 53.4 ± 9.2 | 53.1 ± 8.9 | 53.3 ± 9.1 |
| Sex: Female, Male(Participants) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| Female | 969 | 965 | 1934 |
| Male | 0 | 0 | 0 |
| Race/Ethnicity, Customized(Participants) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| Caucasian | 718 | 741 | 1459 |
| Hispanic | 141 | 97 | 238 |
| Black | 94 | 95 | 189 |
| Asian | 11 | 22 | 33 |
| Indian | 1 | 2 | 3 |
| Hawaiian | 0 | 2 | 2 |
| Other | 2 | 5 | 7 |
| Unknown | 2 | 1 | 3 |
| Baseline Performance Status (ECOG)(Participants) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| ECOG 0 | 860 | 857 | 1717 |
| ECOG 1 | 109 | 108 | 217 |
| Stage(Participants) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| I | 136 | 124 | 260 |
| II | 705 | 716 | 1421 |
| III | 128 | 125 | 253 |
| Hormone Receptor Status(Participants) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| Positive | 679 | 678 | 1357 |
| Negative | 290 | 287 | 577 |
| Histology(Participants) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| Ductal | 811 | 789 | 1600 |
| Lobular | 87 | 100 | 187 |
| Mixed | 24 | 26 | 50 |
| Other | 47 | 48 | 95 |
| Unknown | 0 | 2 | 2 |
| Tumor size(cm) | TC Arm | TAC Arm | Total |
|---|---|---|---|
| Mean | 2.7 ± 1.5 | 2.6 ± 1.5 | 2.6 ± 1.5 |
3 further baseline measures are reported on the registry.
This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.
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