Adjuvant Trastuzumab Pertuzumab Plus Docetaxel in the Treatment of Early HER2-positive Breast Cancer

  • End date
    Jun 25, 2023
  • participants needed
  • sponsor
    Helsinki University Central Hospital
Updated on 26 January 2021
breast surgery
adjuvant therapy
invasive breast cancer
her2/neu-positive breast cancer
chromogenic in situ hybridization


This randomized clinical trial compares two systemic treatments for HER2-positive breast cancer. The treatments are given either prior to breast surgery (as neoadjuvant treatment) or after breast surgery (as adjuvant treatment). In the investigational group (Group A) the study participants will receive a combination of two drugs directed at HER2 (two anti-HER2 antibodies) plus a chemotherapy agent (docetaxel) for a brief duration, and the patients allocated to the comparator group (Group B) will be treated with chemotherapy plus one anti-HER2 treatment (trastuzumab) for one year.


In this study, patients who have been diagnosed with HER2-positive early breast cancer will be randomly allocated in a 1:1 ratio to receive either three 3-weekly cycles of trastuzumab, pertuzumab and docetaxel (TPD) for a total duration of 9 weeks, followed by three further cycles of chemotherapy (Group A) or three 3-weekly cycles of trastuzumab and docetaxel (TD) followed by three further cycles of chemotherapy and single-agent anti-HER2 antibody treatment to complete one year of anti-HER2 treatment (Group B). These systemic treatments may be administered either prior to breast surgery (as neoadjuvant treatment) or after breast surgery (as adjuvant treatment). The study participants are required to have histologically verified breast cancer with a moderate to high risk for breast cancer recurrence despite macroscopically complete surgery for the breast tumor. The moderate/high risk of breast cancer recurrence is defined by presence of cancer in the axillary lymph nodes, or if the axillary lymph nodes do not contain cancer, by presence of a tumor larger than one centimeter in the breast. The study patients are followed up during the study treatments and after their completion with physical examination, blood tests, cardiac tests and, whenever indicated, with imaging. Approximately 700 patients will be randomly allocated to each of the two groups. The study hypothesis is that the regimen containing TPD may be more effective than the Group B treatment despite its brief duration.

Condition Breast Cancer, Breast Cancer Diagnosis, breast carcinoma, cancer, breast
Treatment Trastuzumab, Pertuzumab
Clinical Study IdentifierNCT02625441
SponsorHelsinki University Central Hospital
Last Modified on26 January 2021


Yes No Not Sure

Inclusion Criteria

Is your age greater than or equal to 18 yrs?
Are you female?
Do you have Breast Cancer?
Do you have any of these conditions: cancer, breast or breast carcinoma or Breast Cancer or Breast Cancer Diagnosis?
Patient has provided a written informed consent prior to study-specific screening procedures, with the understanding that she has the right to withdraw from the study at any time, without prejudice
Woman > 18 years of age
Histologically confirmed invasive breast cancer
HER2-positive breast cancer (preferably assessed with in situ hybridization; CISH, FISH or SISH; if not available with immunohistochemistry 3+)
A high risk of breast cancer recurrence with one of the following: i) Pathological N0 with the longest invasive tumor diameter >10 mm; ii) Histologically confirmed regional node positive disease

Exclusion Criteria

Presence of distant metastases
Inflammatory breast cancer
Clinically significant (i.e. active) cardiac disease (e.g. congestive heart failure, symptomatic coronary artery disease and cardiac arrhythmia not well controlled with medication) or myocardial infarction within the last 12 months
Left ventricular ejection fraction less than 50% (or under the institutional normal reference range) assessed by echocardiography or isotope cardiography
ER and HER-2 status (via in situ hybridization or immunohistochemistry) not determined
The WHO performance status > 1\
Pregnant or lactating women
Women of childbearing potential unless using a reliable and appropriate contraceptive method. Women must have been amenorrheic for at least 12 months prior to study entry to be considered postmenopausal and to have no childbearing potential. Women of childbearing potential (menstruating within 12 months of study entry), or with no hysterectomy and age < 55, must have a negative pregnancy test at baseline
Randomization more than 12 weeks after the date of breast surgery
Organ allografts with immunosuppressive therapy required
Major surgery (except breast surgery) within 4 weeks prior to study treatment start, or lack of complete recovery from the effects of major surgery
Participation in any investigational drug study within 4 weeks preceding treatment start
Patients with a history of uncontrolled seizures, central nervous system disorders or psychiatric disability judged by the investigator to be clinically significant precluding study participation
Multifocal breast cancer when the largest cancer focus is not HER2-positive
History of another malignancy or contralateral invasive breast cancer within the last five years except cured basal cell carcinoma of skin or carcinoma in situ of the uterine cervix (exception: patients with bilateral HER2-positive breast cancer are eligible)
One or more of the following: Blood hemoglobin < 10.0 g/dL, neutrophils < 1.5 x 109/L; platelet count < 120 x 109/L; Serum/plasma creatinine > 1.5 x Upper Limit of Normal (ULN); Serum/plasma bilirubin > ULN; Serum/plasma ALT and/or AST > 1.5 x ULN; Serum/plasma alkaline phosphatase > 2.5 x ULN
Serious uncontrolled infection or other serious uncontrolled concomitant disease
Unwilling or unable to comply with the protocol for the duration of the study
History of hypersensitivity to the investigational products or to drugs with similar chemical structures
Pre-existing motor or sensory neurotoxicity of a severity grade 2 by CTCAE version 4, unless related to mechanical etiology
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