Palbociclib combined with aromatase inhibitors for the treatment of breast cancer
| ISRCTN | ISRCTN18026884 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN18026884 |
| ClinicalTrials.gov (NCT) | Nil known |
| Clinical Trials Information System (CTIS) | Nil known |
| Protocol serial number | Nil known |
| Sponsor | First Hospital of China Medical University |
| Funder | First Hospital of China Medical University |
- Submission date
- 29/01/2023
- Registration date
- 11/02/2023
- Last edited
- 10/02/2023
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Cancer
Plain English summary of protocol
Background and study aims
Neoadjuvant chemotherapy is chemotherapy that a person with cancer receives before their primary course of treatment. It is an important treatment for locally advanced breast cancer and findings from the pathological efficacy evaluation can also provide an accurate reference for guiding postoperative adjuvant treatment (used after primary treatment to lessen the chance of the cancer coming back). With the continuous development and maturity of new adjuvant treatment, neoadjuvant chemotherapy has become the main preoperative systemic treatment applied to locally advanced breast cancer.
For patients with hormone receptor positive (HR+) breast cancer who are insensitive to neoadjuvant chemotherapy, sequential neoadjuvant endocrine therapy is also an option, but clinicians still have concerns about the treatment onset time and duration of neoadjuvant endocrine therapy. Furthermore, clinical difficulties in the treatment of patients with locally advanced HR+/HER2- breast cancer who are insensitive to neoadjuvant chemotherapy require guidance on how to choose an appropriate follow-up treatment to achieve the goal of phase reduction or breast conservation. This study aims to evaluate the application of neoadjuvant endocrine therapy combined with the CDK4/6 inhibitor palbociclib to enhance neoadjuvant endocrine therapy, provide survival benefits, and improve quality of life.
Who can participate?
Female patients aged over 18 years with invasive breast cancer who are postmenopausal or premenopausal and reach the menopausal standard after suppression of ovarian function
What does the study involve?
General information and clinical diagnosis data of patients, including basic information, tumor-related imaging information, and pathological information will be collected. Patients will be followed up once every 2 months and treatment-related information will be recorded. Treatment-related adverse reactions will be recorded once per treatment cycle. Patients will receive palbociclib treatment combined with endocrine therapy for four to six cycles (28 days being one cycle). The timing of any surgical intervention will be determined according to the results of the imaging evaluation.
What are the possible benefits and risks of participating?
If a patient participates in this study, the researchers will regularly assess their condition and fully inform them. During the clinical trial, the patient will be provided with a routine examination and will be followed up using WeChat, and the patient’s examination process will be simplified.
The common adverse reactions (incidence of 10% or more) of palbociclib treatment include leukopenia, fatigue, anemia, upper respiratory tract infection, nausea, stomatitis, alopecia, diarrhea, thrombocytopenia, loss of appetite, vomiting, peripheral neuropathy, and epistaxis.
Mild adverse reactions will not receive specific treatment, especially if they are tolerated by patients and only symptomatic support will be provided. Symptomatic treatment will be administered to all patients for clinical symptoms (such as nausea, vomiting, and joint pain) and adverse reactions (such as infection, leukopenia, and thrombocytopenia).
When is the study starting and how long is it expected to run for?
September 2022 to December 2023
Who is funding the study?
There are no funders for the study.
Who is the main contact?
Fan Yao, yaofancmu@sina.com
Contact information
Principal investigator
No.155, Nanjing North Street
Heping District
Shenyang
110001
China
 ORCID ID |
0000-0001-8689-0291 |
|---|---|
| Phone | +86 (0)13998373748 |
| yaofancmu@sina.com |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Prospective open single-arm Phase II clinical trial |
| Secondary study design | Non randomised study |
| Study type | Participant information sheet |
| Scientific title | Palbociclib combined with aromatase inhibitors for the treatment of locally advanced HR+HER2- breast cancer insensitive to neoadjuvant chemotherapy: a prospective, single-arm, Phase II clinical trial |
| Study objectives | This study assumes that four to six cycles of palbociclib treatment combined with endocrine therapy can completely or partially improve disease conditions in patients with locally advanced HR+HER2- breast cancer who have received two cycles of neoadjuvant chemotherapy and have stable or progressive disease status. |
| Ethics approval(s) | Approved 30/09/2022, Medical Scientific Research Ethics Committee of The First Hospital of China Medical University (No. 155, Nanjing Street, Heping District, Shenyang 110000, Liaoning Province, China; +86 (0)24 83282837; email: not provided), ref: 2022]2022-360-2 |
| Health condition(s) or problem(s) studied | Breast cancer |
| Intervention | At the start date of the trial, patients who meet the eligibility criteria will begin to be enrolled in this study. General information and clinical diagnosis data of patients, including basic information, tumor-related imaging information, pathological information (ER and/or PR status, and Ki67 expression) will be collected. Patients will be followed up once every 2 months, and treatment-related information will be recorded. Written informed consent will be obtained from each patient. Treatment-related adverse reactions will be recorded once every cycle. Patients will receive palbociclib treatment combined with endocrine therapy for four to six cycles (28 days being one cycle). Operation timing will be determined based on the results of the imaging evaluation. Piperacillin (28 days as a treatment cycle, oral piperacillin at 125 mg/d for 3 consecutive weeks, followed by piperacillin withdrawal for 1 week) Aromatase inhibitors (endocrine therapy) Exemestane (25 mg/tablet, one tablet per day, once daily, oral use) Letrozole (2.5 mg/tablet, one tablet per day, once daily, oral use) Anatriazole (1 mg/tablet, one tablet per day, once daily, oral use) |
| Intervention type | Drug |
| Phase | Phase II |
| Drug / device / biological / vaccine name(s) | Piperacillin, exemestane, letrozole, anatriazole |
| Primary outcome measure(s) |
Objective response rate (ORR) is defined as the proportion of patients with a complete response (CR) or a partial response (PR) to treatment among the total number of patients enrolled, i.e., ORR = CR + PR / total number of patients ×100%. ORR will be evaluated at 4 to 6 months after initiating palbociclib treatment combined with endocrine therapy. |
| Key secondary outcome measure(s) |
1. Pathologic complete response (pCR): pCR is defined as no residual in situ or invasive tumor in the breast or axillary nodes. pCR will be evaluated on the day of operation. |
| Completion date | 01/12/2023 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Adult |
| Lower age limit | 18 Years |
| Sex | Female |
| Target sample size at registration | 36 |
| Key inclusion criteria | 1. Age >18 years (note: there is no upper age limit for the onset of breast cancer, and older patients are more intolerant of chemotherapy) 2. Postmenopausal female patients; or premenopausal female patients who meet the menopausal standard after ovarian function suppression (OFS)* 3. Before neoadjuvant chemotherapy, a needle biopsy of the breast will be performed to confirm the diagnosis of invasive breast cancer. In addition, immunohistochemistry will indicate ER-positive (ER expression ≥ 50%), progesterone receptor (PR)-positive or negative, and HER2-negative luminal type breast cancer 4. Patients who have not received any breast cancer-related treatment prior to admission 5. Patients with newly confirmed breast cancer who have received two cycles of neoadjuvant chemotherapy (the neoadjuvant chemotherapy protocol will be determined according to patient condition) and are insensitive to neoadjuvant chemotherapy 6. Availability of complete clinical pathological data * Menopausal women will be considered if one or more of the following conditions are met: 1. Women who have undergone bilateral oophorectomy 2. Age ≥60 years 3. Age <60 years: For patients who have natural menopause ≥12 months, levels of follicle-stimulating hormone and estradiol within the postmenopausal range without receiving chemotherapy, tamoxifen, toremifene, or ovarian castration; for patients who are taking tamoxifen or toremifene, levels of follicle-stimulating hormone and estradiol levels should reach those of postmenopausal levels. Chemotherapy insensitivity: according to the efficacy evaluation criteria for solid tumors, chemotherapy insensitivity is considered when progressive disease (PD) or stable disease (SD) is established after two cycles of neoadjuvant chemotherapy. |
| Key exclusion criteria | 1. Patients who have received surgery, radiotherapy and endocrine therapy related to breast cancer in the past 2. Bilateral breast cancer: bilateral primary breast cancer and bilateral metastatic breast cancer. Generally, bilateral breast cancer refers to bilateral primary breast cancer; or inflammatory breast cancer: The first symptoms of primary inflammatory breast cancer are breast enlargement, skin redness and firmness, and pain. The typical clinical manifestations of primary inflammatory breast cancer are diffuse breast enlargement, skin congestion, and edema (orange peel skin) in 1/3 or more areas of the breast, and obvious palpable boundaries in the areas of congestion and edema. The boundaries of tumors are often unclear by palpation. The clinical manifestations are also accompanied by erysipelas such as edge or stripe pigmentation, an increase in skin temperature and tenderness. Some patients have skin ulcers caused by local tumor collapse, which is often secondary to locally advanced breast cancer. 3. Patients complicated by other malignant tumors or having a history of other malignant tumors 4. Patients with distant metastasis at initial diagnosis 5. Patients with breast cancer, which will not be histopathologically confirmed 6. Patients who have immune system disease, blood system disease, or mental disease before chemotherapy 7. Before chemotherapy, patients have severe dysfunction of important organs such as the heart, liver, or kidney |
| Date of first enrolment | 30/01/2023 |
| Date of final enrolment | 01/03/2023 |
Locations
Countries of recruitment
- China
Study participating centre
Heping District
Shenyang
110001
China
Results and Publications
| Individual participant data (IPD) Intention to share | Yes |
|---|---|
| IPD sharing plan summary | Published as a supplement to the results publication |
| IPD sharing plan | The datasets generated and/or analysed during the current study will be published as a supplement to the results publication |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
Editorial Notes
10/02/2023: Trial's existence confirmed by the Medical Scientific Research Ethics Committee of The First Hospital of China Medical University.
