Back to resultsPresurgical Treatment With Letrozole in Patients With Early-stage Breast Cancer.
Primary Purpose
Breast Cancer
Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
Letrozole
Sponsored by
About this trial
This is an interventional basic science trial for Breast Cancer focused on measuring breast cancer, postmenopausal, letrozole, RAD001, Everolimus
Eligibility Criteria
Inclusion Criteria:
- Histologic Documentation of invasive breast cancer by core needle or incisional biopsy. Excess baseline biopsy tumor tissue sufficient to make three 5-micron sections must be available for molecular analyses as part of this study.
- The invasive cancer must be estrogen receptor alpha (ER)-positive, with ER staining present in greater than 50% staining of invasive cancer cells by IHC.
- The invasive cancer must be human epidermal growth factor receptor 2 (HER2) negative (IHC 0-1+, or with a fluorescence in situ hybridization (FISH) ratio of <1.8 if IHC is 2+ or if IHC has not been done).
- Clinical stage I-III invasive breast cancer with the intent to treat with surgical resection of the primary tumor. Tumor must be ≥ 2cm to provide adequate tissue.
- Patients with multi-centric or bilateral disease are eligible if the target lesions meet the other eligibility criteria. Samples from all available tumors are requested for research purposes.
- Women ≥ age 18, for whom adjuvant treatment with an aromatase inhibitor would be clinically indicated. Women must be either post-menopausal, or pre-menopausal having undergone oophorectomy.
- Patients must meet the following clinical laboratory criteria:
Absolute neutrophil count (ANC)≥ 1000/mm3 and platelet count ≥ 75,000/mm3. Total bilirubin ≤ 1.5 X the upper limit of normal range (ULN). Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 3 x ULN.
- Ability to give informed consent.
Exclusion Criteria:
- Prior endocrine therapy for any histologically confirmed cancer is not allowed. Prior endocrine therapy that was administered ≥ 5 years ago for the prevention of breast cancer in patients with no history of breast cancer is allowed.
- Systemic drug treatment to induce ovarian suppression if woman is pre-menopausal.
- Any other neoadjuvant therapy for breast cancer (i.e., treatment with any other anti-cancer agent besides Letrozole (10-21)days before surgical resection of the primary tumor).
Sites / Locations
- Dartmouth Hitchcock Medical Center
Arms of the Study
Arm 1
Arm 2
Arm Type
No Intervention
Active Comparator
Arm Label
No drug treatment
Letrozole-presurgical
Arm Description
Post-menopausal women with stage I-III breast cancer will have surgical resection of tumor and tumor tissue will be used to study cell growth signaling pathways ex-vivo.
Patients will receive Letrozole for 10-21 days prior to surgical resection of tumor tissue. This tissue will be used ex-vivo to study cell growth signaling pathway. The results will be compared to arm of the study with no intervention.
Outcomes
Primary Outcome Measures
Change in Insulin Receptor Substrate 1 (IRS-1) / Phosphoinositide 3-kinase (PI3K) / Serine-threonine Protein Kinase (AKT) Pathway Activation
The Primary Endpoint is to determine the effect of ex vivo mTORC1 inhibition with everolimus (RAD001) on IRS-1/PI3K/AKT pathway activation (as measured by phospho-AKT-T308 and phospho-AKT-S473) in ER+/human epidermal growth factor receptor 2 (HER2)- breast tumors treated with presurgical letrozole compared to ER+/HER2- breast tumors not treated with presurgical therapy.
Secondary Outcome Measures
Percentage of Ki67 Score
The Secondary Endpoint is to compare tumor cell proliferation as measured with the Ki-67 assay in breast cancer specimens taken before and at the time of surgery, comparing specimens of patients treated with presurgical letrozole and specimens of patients who did not receive presurgical letrozole. The secondary endpoint is Ki67 score, as determined by the percentage of Ki67+ tumor cells identified by immunohistochemistry.
Whole slides were scanned at 40x (Aperio AT2, Leica Biosystems), and automated Ki67 analysis (percent positive nuclei) was determined using the Aperio ImageScope (v12.3.1.60002, Leica Biosystems) nuclear v9 algorithm. As recommended by the International Ki67 in Breast Cancer Working Group, 3 high-power microscopic fields were selected for analysis to represent the spectrum of staining present on the whole tissue section, and a minimum of 500 malignant invasive cells were score
Full Information
NCT ID
NCT02010021
First Posted
November 22, 2013
Last Updated
January 9, 2019
Sponsor
Dartmouth-Hitchcock Medical Center
1. Study Identification
Unique Protocol Identification Number
NCT02010021
Brief Title
Presurgical Treatment With Letrozole in Patients With Early-stage Breast Cancer.
Official Title
Presurgical Treatment With Letrozole in Patients With Early-stage Breast Cancer.
Study Type
Interventional
2. Study Status
Record Verification Date
January 2019
Overall Recruitment Status
Completed
Study Start Date
January 2014 (undefined)
Primary Completion Date
December 8, 2017 (Actual)
Study Completion Date
December 8, 2017 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Dartmouth-Hitchcock Medical Center
4. Oversight
Data Monitoring Committee
Yes
5. Study Description
Brief Summary
Some tumors use estrogen in the body to assist with growth. Letrozole is a drug that is prevents cells from producing estrogens. This should assist with the slowing of growth of tumor cells. Letrozole also promotes cell destruction by inhibiting a cellular destruction pathway.
The objectives of this study will look at the differences between the cellular destruction pathway before and after letrozole use, and the differences in the cellular destruction pathway in participants that have received letrozole versus those who did not. The study will also look at a gene in all participants called Ki67. This gene is associated with the rate of tumor cell growth. The study will measure the levels of Ki67 and compare them to the amount of activation of the cellular destruction pathway.
Participants in this study will have undergone a diagnostic biopsy of their breast tissue.
In order to meet these objectives, one group of participants (Arm A) will not receive letrozole. Tissue leftover from their diagnostic biopsy will be treated with everolimus (RAD001) in the laboratory and the effects of this drug on the cellular destruction pathway will be studied.
The other group of participants (Arm B) will take letrozole for a minimum of 10 and maximum of 21 days. They will have a second tumor sample taken as part of their surgical procedure completed to remove the tumor tissue. Any differences in the cellular destruction pathway before and after exposure to letrozole will be measured.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Breast Cancer
Keywords
breast cancer, postmenopausal, letrozole, RAD001, Everolimus
7. Study Design
Primary Purpose
Basic Science
Study Phase
Not Applicable
Interventional Study Model
Sequential Assignment
Model Description
10 subjects received no presurgical therapy, and then 7 subjects received presurgical letrozole.
This is a sequential model because the results from Arm A determined the sample size for Arm B. Tumors from each of the 10 untreated patients in Arm A showed induction of AKT activation with RAD001 treatment. Based on these results, we determined that a sample size of seven patients from Arm B would be adequate to detect a significant effect (p≤0.05) of presurgical Letrozole on RAD001-induced changes in phospho-AKT levels with 80% power (calculated using uncorrected chi-squared statistic).
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
17 (Actual)
8. Arms, Groups, and Interventions
Arm Title
No drug treatment
Arm Type
No Intervention
Arm Description
Post-menopausal women with stage I-III breast cancer will have surgical resection of tumor and tumor tissue will be used to study cell growth signaling pathways ex-vivo.
Arm Title
Letrozole-presurgical
Arm Type
Active Comparator
Arm Description
Patients will receive Letrozole for 10-21 days prior to surgical resection of tumor tissue. This tissue will be used ex-vivo to study cell growth signaling pathway. The results will be compared to arm of the study with no intervention.
Intervention Type
Drug
Intervention Name(s)
Letrozole
Other Intervention Name(s)
Femara
Intervention Description
Patients will receive Letrozole for 10-21 days prior to surgical resection of tumor tissue. This tissue will be used ex-vivo to study cell growth signaling pathway. The results will be compared to arm of the study with no intervention.
Primary Outcome Measure Information:
Title
Change in Insulin Receptor Substrate 1 (IRS-1) / Phosphoinositide 3-kinase (PI3K) / Serine-threonine Protein Kinase (AKT) Pathway Activation
Description
The Primary Endpoint is to determine the effect of ex vivo mTORC1 inhibition with everolimus (RAD001) on IRS-1/PI3K/AKT pathway activation (as measured by phospho-AKT-T308 and phospho-AKT-S473) in ER+/human epidermal growth factor receptor 2 (HER2)- breast tumors treated with presurgical letrozole compared to ER+/HER2- breast tumors not treated with presurgical therapy.
Time Frame
baseline and surgery, approximately 30 days
Secondary Outcome Measure Information:
Title
Percentage of Ki67 Score
Description
The Secondary Endpoint is to compare tumor cell proliferation as measured with the Ki-67 assay in breast cancer specimens taken before and at the time of surgery, comparing specimens of patients treated with presurgical letrozole and specimens of patients who did not receive presurgical letrozole. The secondary endpoint is Ki67 score, as determined by the percentage of Ki67+ tumor cells identified by immunohistochemistry.
Whole slides were scanned at 40x (Aperio AT2, Leica Biosystems), and automated Ki67 analysis (percent positive nuclei) was determined using the Aperio ImageScope (v12.3.1.60002, Leica Biosystems) nuclear v9 algorithm. As recommended by the International Ki67 in Breast Cancer Working Group, 3 high-power microscopic fields were selected for analysis to represent the spectrum of staining present on the whole tissue section, and a minimum of 500 malignant invasive cells were score
Time Frame
baseline and surgery, approximately 30 days
10. Eligibility
Sex
Female
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Histologic Documentation of invasive breast cancer by core needle or incisional biopsy. Excess baseline biopsy tumor tissue sufficient to make three 5-micron sections must be available for molecular analyses as part of this study.
The invasive cancer must be estrogen receptor alpha (ER)-positive, with ER staining present in greater than 50% staining of invasive cancer cells by IHC.
The invasive cancer must be human epidermal growth factor receptor 2 (HER2) negative (IHC 0-1+, or with a fluorescence in situ hybridization (FISH) ratio of <1.8 if IHC is 2+ or if IHC has not been done).
Clinical stage I-III invasive breast cancer with the intent to treat with surgical resection of the primary tumor. Tumor must be ≥ 2cm to provide adequate tissue.
Patients with multi-centric or bilateral disease are eligible if the target lesions meet the other eligibility criteria. Samples from all available tumors are requested for research purposes.
Women ≥ age 18, for whom adjuvant treatment with an aromatase inhibitor would be clinically indicated. Women must be either post-menopausal, or pre-menopausal having undergone oophorectomy.
Patients must meet the following clinical laboratory criteria:
Absolute neutrophil count (ANC)≥ 1000/mm3 and platelet count ≥ 75,000/mm3. Total bilirubin ≤ 1.5 X the upper limit of normal range (ULN). Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 3 x ULN.
- Ability to give informed consent.
Exclusion Criteria:
Prior endocrine therapy for any histologically confirmed cancer is not allowed. Prior endocrine therapy that was administered ≥ 5 years ago for the prevention of breast cancer in patients with no history of breast cancer is allowed.
Systemic drug treatment to induce ovarian suppression if woman is pre-menopausal.
Any other neoadjuvant therapy for breast cancer (i.e., treatment with any other anti-cancer agent besides Letrozole (10-21)days before surgical resection of the primary tumor).
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Gary Schwartz, MD
Organizational Affiliation
Dartmouth-Hitchcock Medical Center
Official's Role
Principal Investigator
Facility Information:
Facility Name
Dartmouth Hitchcock Medical Center
City
Lebanon
State/Province
New Hampshire
ZIP/Postal Code
03756
Country
United States
12. IPD Sharing Statement
Citations:
PubMed Identifier
29507656
Citation
Yang W, Schwartz GN, Marotti JD, Chen V, Traphagen NA, Gui J, Miller TW. Estrogen receptor alpha drives mTORC1 inhibitor-induced feedback activation of PI3K/AKT in ER+ breast cancer. Oncotarget. 2018 Jan 15;9(10):8810-8822. doi: 10.18632/oncotarget.24256. eCollection 2018 Feb 6.
Results Reference
result
Learn more about this trial
Presurgical Treatment With Letrozole in Patients With Early-stage Breast Cancer.
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