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Clinical Trial VICCBRE1640


PALLAS: Palbociclib Collaborative Adjuvant Study: A Randomized Phase III Trial of Palbociclib with Standard Adjuvant Endocrine Therapy versus Standard Adjuvant Endocrine Therapy Alone for Hormone Receptor Positive (HR+) / Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Early Breast Cancer

Principal Investigator(s)

Ingrid Mayer


  • Protocol No. VICCBRE1640
  • Open Date: 11/10/2016
  • Staging: Phase III
  • Age Group: Adults
  • Scope: International
  • Objective: To compare invasive disease-free survival (iDFS) for the combination of at least 5 years endocrine therapy and 2-year palbociclib treatment versus at least 5 years endocrine therapy alone in patients with histologically confirmed HR+/HER2- invasive early breast cancer (EBC).
  • Disease Sites: Breast
  • Therapies: Hormonal Therapy; Molecular Targeted Agents / Immunotherapy / Biologics
  • Drugs: Anastrozole; Exemestane; Letrozole (Femara); Palbociclib (PD 0332991); Tamoxifen
  • Participating Institutions: Vanderbilt University
  • National Clinical Trial ID: NCT02513394
  • Secondary Protocol No: AFT-05


None Provided.


Ages Eligible for Study:18 Years and older
Genders Eligible for Study:All
Accepts Healthy Volunteers:No


Inclusion Criteria:
• Signed informed consent prior to study specific procedures.
• Age ≥18 years (or per national guidelines).
• Pre- and postmenopausal women or men with Stage II (Stage IIA limited to max. 1000 patients) or Stage III early invasive breast cancer
• Patients with multicentric and/or multifocal and/or bilateral early invasive breast cancer are eligible if all histopathologically examined tumors meet pathologic criteria for ER+ and/or PR+ and HER2-.
• Patients must have histologically confirmed ER+ and/or PR+, HER2-, early invasive breast cancer.
• Patients must have undergone breast surgery for the current malignancy. FFPE tumor tissue block must be confirmed to be received at the central sample repository prior to randomization.
• ECOG performance status 0-1.
• Patients must be able and willing to swallow and retain oral medication.
• Serum or urine pregnancy test must be negative in premenopausal women within 14 days of randomization, or in women with amenorrhea of less than 12 months at time of randomization.
• Patients who received neo/adjuvant therapy must be after last dose of chemotherapy and/or biologic therapy and must have sufficient resolution of side effects.
• Patients who received breast/axilla/post-mastectomy chest wall radiotherapy must be after last dose of radiotherapy and must have sufficient resolution of side effects.
• Patients must have sufficient resolution of any surgical side effects (no active wound healing complications).
-Patients must either be initiating or have already started adjuvant hormonal treatment. -
• Patients who already received neo/adjuvant endocrine therapy are eligible as long as they are enrolled within 12 months of initial histological diagnosis and after completing no more than 6 months of adjuvant endocrine therapy.
• Absolute neutrophil count ≥ 1,500/µL
• Platelets ≥ 100,000/ mm3
• Hemoglobin ≥ 10g/dL
• Total serum bilirubin ≤ ULN; or total bilirubin ≤ 3.0 × ULN with direct bilirubin within normal range in patients with documented Gilbert's Syndrome.
• Aspartate amino transferase (AST or SGOT) and alanine amino transferase (ALT or SGPT) ≤ 1.5 × institutional ULN.
• Serum creatinine within normal institutional limits or creatinine clearance ≥ 60 mL/min/1.73 m2 for patients with serum creatinine levels above institutional ULN.
Exclusion Criteria:
• Concurrent therapy with other Investigational Products.
• Prior therapy with any CDK inhibitor.
• Patients with Stage I or IV breast cancer are not eligible.
• History of allergic reactions attributed to compounds of chemical or biologic composition similar to palbociclib.
• Patients receiving any medications or substances that are potent inhibitors or inducers of
• CYP3A isoenzymes within 7 days of randomization.
• Uncontrolled intercurrent illness that would limit compliance with study requirements.
• Pregnant women, or women of childbearing potential without a negative pregnancy test within 14 days prior to randomization.
-Patients with a history of any malignancy are ineligible (for exceptions see: Pallas -
• Protocol, v1.0, Exclusion criteria 8).
• Patients who previously received endocrine therapy within 5 years prior to diagnosis of the current malignancy.
• Patients on combination antiretroviral therapy.
• Patients with clinically significant history of any liver disease.
• Patients receiving concurrent exogenous hormone therapy (topical vaginal estrogen therapy is allowable).