A Phase II Neoadjuvant Study of Palbociclib in Combination With Letrozole and Trastuzumab as Neoadjuvant Treatment of Stage II-III ER+ HER2+ Breast Cancer (PALTAN)
Overview
- Phase
- Phase 2
- Intervention
- Palbociclib
- Conditions
- Breast Cancer
- Sponsor
- Washington University School of Medicine
- Enrollment
- 26
- Locations
- 3
- Primary Endpoint
- Number of Participants With Pathologic Complete Response (pCR)
- Status
- Terminated
- Last Updated
- 4 years ago
Overview
Brief Summary
The investigators propose to influence estrogen receptor (ER) signaling by combining endocrine therapy with CDK4/6 inhibition along with trastuzumab in ER+/ human epidermal growth factor receptor 2 (HER2)+ early stage breast cancer.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Newly diagnosed clinical stage II or III ER+/HER2+ breast cancer with complete surgical excision of the breast cancer after neoadjuvant therapy as the treatment goal, staging criteria is to be based on AJCC
- •Tumor size at least 2 cm in one dimension by clinical or radiographic exam (World Health Organization (WHO) criteria). Patients with histologically confirmed palpable lymph nodes may be enrolled regardless of breast tumor size. A palpable mass is not required as long as the mass is at least 2 cm in one dimension by radiographic exam.
- •At least 18 years of age.
- •Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1
- •Normal bone marrow and organ function as defined below:
- •Leukocytes ≥ 3,000/mcL
- •Absolute neutrophil count ≥ 1,500/mcl
- •Platelets ≥ 100,000/mcl
- •Total bilirubin ≤ institutional upper limit of normal (IULN)
- •AST(SGOT)/ALT(SGPT) ≤ 2.5 x IULN
Exclusion Criteria
- •Prior systemic therapy for indexed breast cancer.
- •Indeterminate or negative HER2 status.
- •Inflammatory breast cancer.
- •A history of other malignancy ≤ 5 years from diagnosis of indexed BC with the exception of basal cell or squamous cell carcinoma of the skin treated with local resection only or carcinoma in situ of the cervix.
- •Currently receiving any other investigational agents or received any within the past 28 days.
- •Know to be HIV positive.
- •Known hepatitis B or C infection.
- •A history of allergic reactions attributed to compounds of similar chemical or biologic composition to palbociclib, letrozole, trastuzumab, any other aromatase inhibitor, any other monoclonal antibody, or other agents used in the study.
- •Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, or cardiac arrhythmia.
- •Current use or anticipated need for food or drugs that are known strong CYP3A4 inhibitors (i.e., grapefruit juice, verapamil, ketoconazole, miconazole, itraconazole, posaconazole, erythromycin, clarithromycin, telithromycin, indinavir, saquinavir, ritonavir, nelfinavir, lopinavir, atazanavir, amprenavir, fosamprenavir, nefazodone, diltiazem, and delavirdine) or inducers (i.e. dexamethasone, glucocorticoids, progesterone, rifampin, phenobarbital, St. John's wort).
Arms & Interventions
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Palbociclib
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Letrozole
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Trastuzumab
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Goserelin
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Breast surgery
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Research tumor biopsy
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Research bone marrow (OPTIONAL)
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Research blood sample
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Research blood for germline DNA
Palbociclib + letrozole + trastuzumab +/- goserelin
* Neoadjuvant palbociclib + letrozole (plus goserelin if premenopausal) + trastuzumab for a total of 16 weeks, consisting of (4) 28-day cycles * Definitive surgery will be performed preferably within 6 weeks after the end of Cycle 4. Letrozole and trastuzumab will continue until the day of surgery. Letrozole will continue to be taken daily and trastuzumab will be given every 3 weeks per standard of care guidelines. Adjuvant therapy following definitive surgery will be at the discretion of the treating physician
Intervention: Blood for detection of circulating tumor cells
Outcomes
Primary Outcomes
Number of Participants With Pathologic Complete Response (pCR)
Time Frame: Completion of 4 cycles of treatment (approximately 16 weeks)
A pathologic complete response (pCR) is defined as no histology evidence of invasive tumor cells in the surgical breast specimen and sentinel or axillary lymph nodes.
Secondary Outcomes
- Safety and Tolerability of Palbociclib in Combination With Neoadjuvant Letrozole and Trastuzumab (or FDA Approved Biosimilar) as Measured by Number of Participants With Grade 3 & 4 Adverse Events(30 days after completion of neoadjuvant therapy (approximately 21 weeks))
- Change in Patient Reported Outcomes as Measured by NCI PRO-CTCAE(Baseline, cycle 2 day 1 (approximately 29 days), and end of cycle 4 (approximately 16 weeks))