A Phase II study to investigate the potential utility of PD 0332991 in the treatment of early stage ER+ Human epidermal growth factor receptor 2 (HER2)- breast cancer, to investigate whether the combination of PD 0332991 and anastrozole is able to: 1) improve the pathologic complete response rate when compared to the historical control of single agent aromatase inhibitors, 2) result in fewer patients with on therapy Ki67\>10% compared to historical control.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
84
-Breast and axillary lymph node surgery
University of Alabama
Birmingham, Alabama, United States
Mayo Clinic - Scottsdale
Scottsdale, Arizona, United States
Mayo Clinic - Rochester
Rochester, Minnesota, United States
Washington University School of Medicine
St Louis, Missouri, United States
Number of Participants With Complete Cell Cycle Arrest at Cycle 1 Day 15 (PIK3CA Wild Type Cohort Only)
Complete cell cycle arrest is defined as Ki67 ≤ 2.7% following 2 weeks of neoadjuvant PD 0332991
Time frame: At cycle 1 day 15 (2 weeks)
Number of Participants With Complete Cell Cycle Arrest at Cycle 1 Day 15 (Endocrine Resistant Cohort Only)
Complete cell cycle arrest is defined as Ki67 ≤ 2.7% following 2 weeks of neoadjuvant PD 0332991
Time frame: At cycle 1 day 15 (2 weeks)
Number of Participants With Complete Cell Cycle Arrest at Cycle 1 Day 15 ( PIK3CA Mutant Type Cohort Only)
Complete cell cycle arrest is defined as Ki67 ≤ 2.7% following 2 weeks of neoadjuvant PD 0332991
Time frame: At cycle 1 day 15 (2 weeks)
Number of Participants With Complete Cell Cycle Arrest
Compare rate of complete cell cycle arrest (defined as Ki67 ≤ 2.7%) arrest between C1D1 and C1D15
Time frame: Cycle 1 day 1 and cycle 1 day 15 (2 weeks)
Clinical Response Rate
* The clinical response rate is the number of patients whose disease meets the WHO criteria of complete or partial response prior to surgery divided by the total number of eligible patients who began combination neoadjuvant treatment. * Complete Response (CR) is defined as the disappearance of all known disease based on a comparison between the pre-treatment measurements and the measurements taken at the completion of neo-adjuvant therapy (that is, at the end of cycle 4 neo-adjuvant combination therapy). In addition there is no appearance of new lesions. * Partial Response (PR) is defined as a 50% or greater decrease in the product of the bidimensional measurements of the lesion (total tumor size) between the pre-treatment measurements and the measurements taken at the completion of neo-adjuvant therapy (that is, at the end of cycle 4 neo-adjuvant combination therapy). In addition there can be no appearance of new lesions or progression of any lesion.
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Time frame: 16 weeks
Radiologic Response Rate
* The radiological response rate is the number of patients whose disease meets with WHO criteria for complete or partial response at the evaluation prior to surgery divided by the total number of eligible patients who began combination neo-adjuvant therapy. * Complete Response (CR) is defined as the disappearance of all known disease based on a comparison between the pre-treatment measurements and the measurements taken at the completion of neo-adjuvant therapy (that is, at the end of cycle 4 neo-adjuvant combination therapy). In addition there is no appearance of new lesions. * Partial Response (PR) is defined as a 50% or greater decrease in the product of the bidimensional measurements of the lesion (total tumor size) between the pre-treatment measurements and the measurements taken at the completion of neo-adjuvant therapy (that is, at the end of cycle 4 neo-adjuvant combination therapy). In addition there can be no appearance of new lesions or progression of any lesion.
Time frame: At the end of cycle 4 prior to surgery (estimated to be 16 weeks)
Safety of PD 0332991 in Combination in Anastrozole as Measured by Frequency and Grade of Related Adverse Events
The maximum grade for each type of adverse event will be recorded for each patient using the NCI-CTCAE v4.0 coding scheme, and frequency tables will be reviewed to determine patterns. Additionally, the relationship (possibly related, probably related, and definitely related) of the adverse event(s) to the study treatment will be taken into consideration.
Time frame: From start of treatment through 30 days after completion of an estimated 4 months of neoadjuvant therapy
Number of Participants With a PEPI-0 Score
* Preoperative endocrine prognostic index (PEPI) score is derived from four factors assigned a numerical score following neoadjuvant endocrine therapy, including Ki67 expression in the surgical specimen, pathologic tumor size (indicated as "T" below), lymph node status (indicated as "N" below), and estrogen receptor (ER) level (indicated as ER Allred below). * PEPI-0 score indicates T1 or T2, N0, Ki67 \< 2.7%, ER Allred \> 2. * It predicts a low risk of recurrence.
Time frame: At the time of surgery (estimated to be 5 months)
Change in Ki67 Level of Tumor Specimens
To assess Ki67 level on serially collected tumor specimens
Time frame: Pre-treatment and cycle 1 day 15
Change in Ki67 Level of Tumor Specimens
To assess Ki67 level on serially collected tumor specimens
Time frame: Cycle 1 day 15 and at time of surgery (approximately 2-4 weeks post completion of cycle 4 - each cycle is 28 days)
Number of Participants With Pathologic Complete Response (pCR)
-A pathologic complete response is defined as no histology evidence of invasive tumor cells in the surgical breast specimen and sentinel or axillary lymph nodes.
Time frame: At the time of surgery (estimated to be 5 months)
Safety Profile of Study Therapy During Adjuvant Therapy as Measured by Frequency and Grade of Adverse Event
The maximum grade for each type of adverse event will be recorded for each patient using the NCI-CTCAE v4.0 coding scheme, and frequency tables will be reviewed to determine patterns. Additionally, the relationship (possibly related, probably related, and definitely related) of the adverse event(s) to the study treatment will be taken into consideration.
Time frame: From start of adjuvant therapy through 30 days after completion of adjuvant therapy (estimated to be 2 years)
Overall Survival
Time frame: 5 years
Relapse-free Survival
Time frame: 5 years
Local Recurrence Rate
Local recurrence is defined as histologic evidence of ductal carcinoma in situ or invasive breast cancer in the ipsilateral breast or chest wall.
Time frame: 5 years
Regional Recurrence Rate
Regional recurrence is defined as the cytologic or histologic evidence of disease in the ipsilateral internal mammary, ipsilateral supraclavicular, ipsilateral infraclavicular and/or ipsilateral axillary nodes or soft tissue of the ipsilateral axilla.
Time frame: 5 years
Distant Recurrence Rate
Distant recurrence is defined as the cytologic, histologic, and/or radiographic evidence of disease in the skin, subcutaneous tissue, lymph nodes (other than local or regional metastasis), lung, bone narrow, central nervous system or histologic and/or radiographic evidence of skeletal or liver metastasis.
Time frame: 5 years
Rate of Second Primary Breast Cancer
Second primary breast cancer is defined histologic evidence of ductal carcinoma in situ or invasive breast cancer in the contralateral breast or chest wall.
Time frame: 5 years
Rate of Second Primary Cancer (Non-breast)
Second primary cancer (non-breast) is defined as any non-breast second primary cancer other than squamous or basal cell carcinoma of the skin, melanoma in situ, or carcinoma in situ of the cervix is to be reported and should be confirmed histologically whenever possible.
Time frame: 5 years