Esta página se tradujo automáticamente y no se garantiza la precisión de la traducción. por favor refiérase a versión inglesa para un texto fuente.

PD 0332991 y anastrozol para el cáncer de mama con receptor de estrógeno positivo en estadio 2 o 3 y negativo para HER2

31 de agosto de 2026 actualizado por: Washington University School of Medicine

Un ensayo de fase II del PD 0332991 neoadyuvante, un inhibidor de la quinasa dependiente de ciclina (Cdk) 4/6, en combinación con anastrozol en mujeres con cáncer de mama con receptor de estrógeno positivo en estadio clínico 2 o 3 y negativo para HER2

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.

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Actual)

84

Fase

  • Fase 2

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

    • Alabama
      • Birmingham, Alabama, Estados Unidos, 35233
        • University of Alabama
    • Arizona
      • Scottsdale, Arizona, Estados Unidos, 85259
        • Mayo Clinic - Scottsdale
    • Minnesota
      • Rochester, Minnesota, Estados Unidos, 55905
        • Mayo Clinic - Rochester
    • Missouri
      • St Louis, Missouri, Estados Unidos, 63122
        • Washington University School of Medicine

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Femenino

Descripción

Pre-registration PIK3CA Mutant Inclusion

  • Clinical T2-T4c, any N, M0 invasive ER+ (Allred Score of 6-8) and HER2 negative (0 or 1+ by IHC or FISH negative for amplification) breast cancer, by AJCC 7th edition clinical staging, with the goal being surgery to completely excise the tumor in the breast and the lymph node. Note: Patients with invasive ER+ (Allred Score of 6-8) HER2- breast cancer or DCIS in the contralateral breast the patient are eligible

  • Female ≥18 years of age

  • ECOG performance status of 0, 1 or 2

  • Life expectancy > 4 months

  • Premenopausal, patient must be willing to comply with pregnancy requirements

  • Adequate organ and marrow function

    • leukocytes ≥ 3,000/mcL
    • absolute neutrophil count ≥ 1,500/mcL
    • platelets ≥ 100,000/mcL
    • total bilirubin ≤ ULN
    • AST(SGOT)/ and ALT(SGPT) < 2.5 X ULN
    • Creatinine ≤ ULN
  • Able to understand and willing to sign an IRB-approved written informed consent document

Exclusion

  • Prior treatment of this cancer including: surgery, radiation, chemotherapy, biotherapy, hormonal therapy, investigational agent prior to study entry
  • Receiving any investigational agents
  • Prior therapy with any Cdk4 inhibitor
  • Any of the following in the previous 6 months: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident, transient ischemic attack, symptomatic pulmonary embolism
  • Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled symptomatic cardiac arrhythmia, psychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant/nursing
  • Unwilling to employ adequate contraception
  • Known HIV-positive on combination antiretroviral therapy
  • Evidence of inflammatory cancer
  • Known metastatic disease
  • Current use of anticoagulation therapy
  • Previous excisional biopsy of the breast cancer or sentinel lymph node biopsy
  • Any condition that impairs patient's ability to swallow PD 0332991 tablets (e.g., gastrointestinal tract disease resulting in an inability to take oral medication or a requirement for IV alimentation, prior surgical procedures affecting absorption)
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to PD 0332991 or other agents used in the study
  • Corrected QT interval >470 msec

Registration PIK3CA Mutant Inclusion The criteria below must be met in addition to the pre-registration criteria, except treatment with endocrine therapy for this cancer is allowed prior to registration

  • PIK3CA mutant cohort: tumor PIK3CA mutation present
  • Premenopausal women, serum estradiol level in postmenopausal range ≤ 7 days prior to registration

Exclusion Criteria below must be met in addition to the pre-registration criteria -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)

PIK3CA Wild Type Inclusion

  • Clinical T2-T4c, any N, M0 invasive ER+ (Allred Score of 6-8) and HER2 negative (0 or 1+ by IHC or FISH negative for amplification) breast cancer, by AJCC 7th edition clinical staging, with the goal being surgery to completely excise the tumor in the breast and the lymph node. Note: Patients with invasive ER+ (Allred Score of 6-8) HER2- breast cancer or DCIS in the contralateral breast the patient are eligible

  • For the PIK3CA wild type cohort: tumor PIK3CA mutation absent. Note that if a patient did not have sufficient research tissue for PIK3CA sequencing at pre-registration or if PIK3CA sequencing result is delayed, she could be registered and enrolled on the PD991 trial without assigning to a particular cohort at the time of enrollment. PIK3CA sequencing will be performed in the future on tumors collected at subsequent time points to assign the treatment cohort or when the PIK3CA sequencing data is available

  • For the endocrine resistant cohort: Ki67 > 10% by central testing at Washington University AMP laboratory from a tumor biopsy performed after at least 2 weeks on neoadjuvant endocrine therapy. Note that prior neoadjuvant endocrine therapy could include any endocrine therapy (including aromatase inhibitor, tamoxifen, fulvestrant) alone or in combination, or endocrine therapy in combination with any investigational agent that is not a Cdk 4/6 inhibitor

    *Patients who had a Day 17 Ki67 > 10% from the NCI9170 trial are eligible for the endocrine resistant cohort

  • Female >18 years of age

  • ECOG performance status of 0, 1 or 2

  • Life expectancy > 4 months

  • If premenopausal, patient must be willing to comply with pregnancy requirements

  • Adequate organ and marrow function:

    • leukocytes ≥ 3,000/mcL
    • absolute neutrophil count ≥ 1,500/mcL
    • platelets ≥ 100,000/mcL
    • total bilirubin ≤ ULN
    • AST(SGOT)/ and ALT(SGPT) < 2.5 X ULN
    • Creatinine ≤ ULN
  • In premenopausal women, serum estradiol level in postmenopausal range ≤ 7 days prior to registration.

  • Able to understand and willing to sign an IRB-approved written informed consent document

Exclusion

  • Prior treatment of this cancer including: Surgery, Radiation therapy, Chemotherapy, Biotherapy, Hormonal therapy, Investigational agent prior to study entry
  • Receiving any other investigational agents
  • Prior therapy with any Cdk4 inhibitor
  • Any of the following in the previous 6 months: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident, transient ischemic attack, symptomatic pulmonary embolism
  • Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled symptomatic cardiac arrhythmia, psychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant/nursing
  • Unwilling to employ adequate contraception
  • Known HIV-positive on combination antiretroviral therapy
  • Evidence of inflammatory cancer
  • Known metastatic disease
  • Current use of anticoagulation therapy
  • Previous excisional biopsy of the breast cancer or sentinel lymph node biopsy
  • Any condition that impairs patient's ability to swallow PD 0332991 tablets (e.g., gastrointestinal tract disease resulting in an inability to take oral medication or a requirement for IV alimentation, prior surgical procedures affecting absorption)
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to PD 0332991 or other agents used in the study
  • Corrected QT interval >470 msec
  • 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)

Endocrine Resistant Inclusion

  • Clinical T2-T4c at diagnosis or screening, any N, M0 invasive ER+ (Allred Score at least 3 or > 1% ER positivity) and HER2 negative (0 or 1+ by IHC or FISH negative or equivocal) breast cancer, by AJCC 7th edition clinical staging, with the goal being surgery to completely excise the tumor in the breast and the lymph node. Note: Patients with invasive breast cancer that is ER pos, HER2 neg or equivocal or DCIS in the contralateral breast are eligible; multi-focal diseases are not excluded. The dominant lesion will be followed per protocol

  • Ki67 > 10% by central testing at Washington University AMP laboratory from a tumor biopsy performed after at least 2 weeks on neoadjuvant endocrine therapy. If Ki67 is > 10% by local testing, the Ki67 slide and H&E slide need to be reviewed by the study pathologist to confirm eligibility (discuss with Study Chair). For patients external to Washington University, please contact the Washington University coordinator by email so that a screening ID# can be assigned prior to shipment of the slides

  • Female ≥ 18 years of age

  • ECOG performance status of 0, 1 or 2

  • Pre- or post-menopausal women are eligible. If premenopausal, patient must be willing to comply with pregnancy requirements and agrees with GnRH agonist therapy for ovarian suppression during the study

  • Adequate organ and marrow function:

    • Leukocytes ≥ 3,000/mcL
    • Absolute neutrophil count ≥ 1,500/mcL
    • Platelets ≥ 100,000/mcL
    • Total bilirubin ≤ ULN
    • AST(SGOT)/ and ALT(SGPT) < 2.5 X ULN
    • Creatinine ≤ ULN
  • Able to understand and willing to sign an IRB-approved written informed consent document

Exclusion

  • Prior treatment of this cancer including: Surgery, Radiation, Chemotherapy
  • Receiving any other investigational agents
  • Prior therapy with Cdk4 inhibitor
  • Any of the following in the previous 6 months: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident, transient ischemic attack, symptomatic pulmonary embolism
  • Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled symptomatic cardiac arrhythmia, psychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant/nursing
  • Unwilling to employ adequate contraception
  • Known HIV-positive on combination antiretroviral therapy
  • Known metastatic disease
  • Current use of anticoagulation therapy
  • Previous excisional biopsy of the breast cancer or sentinel lymph node biopsy
  • Any condition that impairs patient's ability to swallow PD 0332991 tablets (e.g., gastrointestinal tract disease resulting in an inability to take oral medication or a requirement for IV alimentation, prior surgical procedures affecting absorption)
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to PD 0332991 or other agents used in the study
  • Corrected QT interval >470 msec
  • 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)

Adjuvant Inclusion

  • Derived benefit from PD 0332991 in the neoadjuvant setting in this trial. This includes the 26 patients who achieved complete cell cycle arrest only after the addition of PD 0332991 (C1D1 Ki67 >2.7% and C1D15 Ki67 ≤ 2.7%) from the main study (PIK3CA WT, mutant, or unknown cohorts) as well as any patients who have a Ki67 ≤ 10% on C1D15 biopsy in the endocrine resistant cohort

  • ECOG performance status of 0, 1 or 2

  • Premenopausal, patient must be willing to comply with pregnancy requirements laid out

  • Adequate organ and marrow function

    • leukocytes ≥ 3,000/mcL
    • absolute neutrophil count ≥ 1,500/mcL
    • platelets ≥ 100,000/mcL
    • total bilirubin ≤ ULN
    • AST(SGOT)/ and ALT(SGPT) ≤ 2.5 X ULN
    • Creatinine ≤ ULN
  • Underwent surgery of the breast and axilla for curative intent

  • At least 4 weeks post completion of adjuvant chemotherapy and radiation therapy if indicated

  • Patients who already started on adjuvant hormonal therapy are eligible under the following conditions:

    • For the 26 patients who enrolled in the initial cohorts and derived benefit from neoadjuvant PD 0332991 (C1D1 Ki67 >2.7% and C1D15 Ki67 ≤ 2.7%), adjuvant PD 0332991 should be initiated as soon as possible if adjuvant hormonal therapy has been initiated and the patient has completed radiation if indicated
    • For patients who enrolled in the endocrine resistant cohort and derived benefit from neoadjuvant PD 0332991 (C1D15 Ki67 ≤ 10%), adjuvant PD 0332991 should be initiated within 6 months or sooner after initation of adjuvant hormonal therapy
  • Able to understand and willing to sign an IRB-approved written informed consent document

Exclusion

  • Any of the following in the previous 6 months: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident, transient ischemic attack, symptomatic pulmonary embolism
  • Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled symptomatic cardiac arrhythmia, ssychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant/nursing
  • Unwilling to employ adequate contraception
  • Known HIV-positive on combination antiretroviral therapy. -Known metastatic disease
  • Any condition that impairs patient's ability to swallow PD 0332991 tablets (e.g., gastrointestinal tract disease resulting in an inability to take oral medication or a requirement for IV alimentation, prior surgical procedures affecting absorption)
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to PD 0332991 or other agents used in the study
  • Corrected QT interval >470 msec
  • 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)

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: No aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Arm 1: PIK3CA Wild Type Cohort
  • Tumor biopsy for testing/research at baseline and Cycle 1 Day 15
  • Cycle 0 is 28 days of anastrozole PO daily and, if premenopausal, goserelin SC every 28 days.
  • Cycles 1-5: PD 0332991 combined with anastrozole (and goserelin if premenopausal) is to be (4) 28-day cycles followed by a 5th cycle of 10-12 days duration consisting of daily PD 0332991 and anastrozole (last dose day before surgery)
  • Standard surgery will be performed per institutional standards 2-4 weeks following the completion of Cycle 4 in those who did not receive Cycle 5. In patients who receive Cycle 5, surgery occurs on Day 11, 12, or 13 of Cycle 5.
  • Patients who derived benefit from the therapy have the option of taking PD 0332991 in combination with endocrine therapy for 23 cycles after surgery and adjuvant chemotherapy and radiation if indicated. It should be re-started at least 4 weeks after the completion of chemotherapy and radiation therapy if these treatments were planned.
Otros nombres:
  • Arimidex®
Otros nombres:
  • Zoladex®
  • Decapéptido I

-Breast and axillary lymph node surgery

Experimental: Arm 2: PIK3CA Mutant Type Cohort
  • Tumor biopsy for testing/research at baseline and Cycle 1 Day 15
  • Cycle 0 is 28 days of anastrozole PO daily and, if premenopausal, goserelin SC every 28 days.
  • Cycles 1-5: PD 0332991 combined with anastrozole (and goserelin if premenopausal) is to be (4) 28-day cycles followed by a 5th cycle of 10-12 days duration consisting of daily PD 0332991 and anastrozole (last dose day before surgery)
  • Standard surgery will be performed per institutional standards 2-4 weeks following the completion of Cycle 4 in those who did not receive Cycle 5. In patients who receive Cycle 5, surgery occurs on Day 11, 12, or 13 of Cycle 5.
  • Patients who derived benefit from the therapy have the option of taking PD 0332991 in combination with endocrine therapy for 23 cycles after surgery and adjuvant chemotherapy and radiation if indicated. It should be re-started at least 4 weeks after the completion of chemotherapy and radiation therapy if these treatments were planned.
Otros nombres:
  • Arimidex®
Otros nombres:
  • Zoladex®
  • Decapéptido I

-Breast and axillary lymph node surgery

Experimental: Arm 3: Endocrine Resistant Cohort
  • Tumor biopsy for testing/research at baseline and Cycle 1 Day 15
  • Cycles 1-5: PD 0332991 combined with anastrozole (and goserelin if premenopausal) is to be (4) 28-day cycles followed by a 5th cycle of 10-12 days duration consisting of daily PD 0332991 and anastrozole (last dose day before surgery)
  • Standard surgery will be performed per institutional standards 2-4 weeks following the completion of Cycle 4 in those who did not receive Cycle 5. In patients who receive Cycle 5, surgery occurs on Day 11, 12, or 13 of Cycle 5.
  • Patients who derived benefit from the therapy have the option of taking PD 0332991 in combination with endocrine therapy for 23 cycles after surgery and adjuvant chemotherapy and radiation if indicated. It should be re-started at least 4 weeks after the completion of chemotherapy and radiation therapy if these treatments were planned.
Otros nombres:
  • Arimidex®
Otros nombres:
  • Zoladex®
  • Decapéptido I

-Breast and axillary lymph node surgery

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Number of Participants With Complete Cell Cycle Arrest at Cycle 1 Day 15 (PIK3CA Wild Type Cohort Only)
Periodo de tiempo: At cycle 1 day 15 (2 weeks)

Complete cell cycle arrest is defined as Ki67 ≤ 2.7% following 2 weeks of neoadjuvant PD 0332991

At cycle 1 day 15 (2 weeks)
Number of Participants With Complete Cell Cycle Arrest at Cycle 1 Day 15 (Endocrine Resistant Cohort Only)
Periodo de tiempo: At cycle 1 day 15 (2 weeks)

Complete cell cycle arrest is defined as Ki67 ≤ 2.7% following 2 weeks of neoadjuvant PD 0332991

At cycle 1 day 15 (2 weeks)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Sobrevivencia promedio
Periodo de tiempo: 5 años
5 años
Supervivencia sin recaídas
Periodo de tiempo: 5 años
5 años
Number of Participants With Complete Cell Cycle Arrest at Cycle 1 Day 15 ( PIK3CA Mutant Type Cohort Only)
Periodo de tiempo: At cycle 1 day 15 (2 weeks)

Complete cell cycle arrest is defined as Ki67 ≤ 2.7% following 2 weeks of neoadjuvant PD 0332991

At cycle 1 day 15 (2 weeks)
Number of Participants With Complete Cell Cycle Arrest
Periodo de tiempo: Cycle 1 day 1 and cycle 1 day 15 (2 weeks)

Compare rate of complete cell cycle arrest (defined as Ki67 ≤ 2.7%) arrest between C1D1 and C1D15

Cycle 1 day 1 and cycle 1 day 15 (2 weeks)
Clinical Response Rate
Periodo de tiempo: 16 weeks
  • 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.
16 weeks
Radiologic Response Rate
Periodo de tiempo: At the end of cycle 4 prior to surgery (estimated to be 16 weeks)
  • 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.
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
Periodo de tiempo: From start of treatment through 30 days after completion of an estimated 4 months of neoadjuvant therapy

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.

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
Periodo de tiempo: At the time of surgery (estimated to be 5 months)
  • 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.
At the time of surgery (estimated to be 5 months)
Change in Ki67 Level of Tumor Specimens
Periodo de tiempo: Pre-treatment and cycle 1 day 15

To assess Ki67 level on serially collected tumor specimens

Pre-treatment and cycle 1 day 15
Change in Ki67 Level of Tumor Specimens
Periodo de tiempo: Cycle 1 day 15 and at time of surgery (approximately 2-4 weeks post completion of cycle 4 - each cycle is 28 days)

To assess Ki67 level on serially collected tumor specimens

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)
Periodo de tiempo: At the time of surgery (estimated to be 5 months)

-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.

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
Periodo de tiempo: From start of adjuvant therapy through 30 days after completion of adjuvant therapy (estimated to be 2 years)

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.

From start of adjuvant therapy through 30 days after completion of adjuvant therapy (estimated to be 2 years)
Local Recurrence Rate
Periodo de tiempo: 5 years

Local recurrence is defined as histologic evidence of ductal carcinoma in situ or invasive breast cancer in the ipsilateral breast or chest wall.

5 years
Regional Recurrence Rate
Periodo de tiempo: 5 years

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.

5 years
Distant Recurrence Rate
Periodo de tiempo: 5 years

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.

5 years
Rate of Second Primary Breast Cancer
Periodo de tiempo: 5 years

Second primary breast cancer is defined histologic evidence of ductal carcinoma in situ or invasive breast cancer in the contralateral breast or chest wall.

5 years
Rate of Second Primary Cancer (Non-breast)
Periodo de tiempo: 5 years

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.

5 years

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Colaboradores

Investigadores

  • Investigador principal: Cynthia X Ma, M.D., Ph.D., Washington University School of Medicine

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

10 de abril de 2013

Finalización primaria (Actual)

13 de abril de 2021

Finalización del estudio (Estimado)

7 de noviembre de 2027

Fechas de registro del estudio

Enviado por primera vez

6 de noviembre de 2012

Primero enviado que cumplió con los criterios de control de calidad

6 de noviembre de 2012

Publicado por primera vez (Estimado)

8 de noviembre de 2012

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

25 de septiembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

31 de agosto de 2026

Última verificación

1 de agosto de 2026

Más información

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

Suscribir