Breast CancerPhase 2NCT00810797
Exemestane in Treating Postmenopausal Women With Stage IV Breast Cancer
A Phase 2 study testing exemestane, laboratory biomarker analysis and quality-of-life assessment in people with Breast Cancer, run by City of Hope Medical Center at 2 sites in United States.
Trial summary
RATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using exemestane may fight breast cancer by lowering the amount of estrogen the body makes. PURPOSE: This phase II trial is studying how well exemestane works in treating postmenopausal women with stage IV breast cancer. Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Breast Cancer
- What is being tested?
- exemestane, laboratory biomarker analysis and quality-of-life assessment
- Type of treatment
- Pill or oral medicine, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 36 participants
- Where
- 2 sitesUnited States
- Study dates
- 17 Dec 2008to 26 Jun 2019
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Histologically or cytologically confirmed metastatic carcinoma of the breast
- Hormone receptor (estrogen receptor [ER] and/or progesterone receptor [PR]) positive disease (defined as: ER and/or PR positivity as >= 5% staining), as confirmed by immunohistochemistry (IHC) based on primary breast tissue or metastatic tissue
- Postmenopausal, as defined by any of the following:
- Natural menopause, with at least 1 year since last menses
- Chemotherapy-induced menopause with at least 1 year from last menses and serum luteinizing hormone (LH)/follicle-stimulating hormone (FSH) and estradiol levels within the postmenopausal range
- History of surgical or radiation-induced ovarian ablation
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- For women =< 56 years old and with a history of hysterectomy but at least one ovary intact, serum LH/FSH and estradiol levels must be within the postmenopausal range
- Postmenopausal women with disease recurrence while receiving either tamoxifen or a non-steroidal aromatase inhibitor (AI) as adjuvant therapy (as long as adjuvant hormonal therapy was taken for 6 months before disease progression) or with disease recurrence following the discontinuation/completion of adjuvant hormonal therapy
- Postmenopausal women with disease progression following either 0, 1 or 2 prior hormonal therapies for metastatic breast cancer, as long as the subject has had no prior exposure to exemestane (EXE)
- Measurable or non-measurable (but evaluable) disease, as defined by RECIST criteria
- Eastern Cooperative Oncology Group (ECOG) performance status of 0-1
- Neutrophil count >= 1.5 X 10^9 cells/L
- Platelet count >= 100 X 10^9 cells/L
- Serum creatinine =< 1.5 times upper limit of normal (ULN)
- Total serum bilirubin =< 1.5 times ULN
- Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) levels =< 2.5 x ULN in patients without liver metastases or =< 5 times ULN in patients with liver metastases
- Alkaline phosphatase =< 2.5 times the ULN for patients without bone or liver metastases
- Subjects must have an estimated life expectancy of greater than 6 months
Who cannot join
- Prior exposure to EXE, whether in the adjuvant or metastatic setting
- Prior history of any other cancer with the exception of non-melanoma skin cancer and treated in situ carcinoma of the cervix
- Active or symptomatic central nervous system (CNS) metastasis (stable or treated brain metastasis allowed but patients must be off decadron, if given for CNS disease)
- Hormone-receptor negative or unknown breast cancer
- More than two prior chemotherapy regimen for treatment of metastatic disease (any prior chemotherapy given in the adjuvant setting is permitted)
- Administration of any other anti-cancer therapy within 2 weeks of initiating study treatment; use of bisphosphonates, however, are permitted for patients with known bone metastases
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- Treatment with any other concurrent investigational agent or anti-tumor drug (chemotherapy, antibody therapy or other biologic agents), will not be permitted
- Subjects who have had no prior exposure to endocrine therapy
- Any uncontrolled medical co-morbidity or psychiatric disorder which interferes with the ability to provide informed consent or comply with study procedures
Trial locations and contacts
2 sites in 1 country.
United States2 sites
City of Hope Medical Center
Duarte, California, 91010-3000
South Pasadena Cancer Center
South Pasadena, California, 91030
About this study
Official title: Intermittent Exemestane Therapy for Metastatic Breast Cancer
RATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using exemestane may fight breast cancer by lowering the amount of estrogen the body makes.
PURPOSE: This phase II trial is studying how well exemestane works in treating postmenopausal women with stage IV breast cancer.
Read the detailed description
PRIMARY OBJECTIVES:
- Progression-free survival at 4 months, as measured by Response Evaluation Criteria in Solid Tumors (RECIST).
SECONDARY OBJECTIVES:
- Objective response rate (complete response [CR] and partial response [PR]).
II. Clinical benefit (CR, PR, and stable disease >= 6 months).
III. Assessment of toxicity.
IV. Assessment of compliance with medication adherence.
- Assessment of quality of life.
VI. Assessment of bone health.
TERTIARY OBJECTIVES:
- Serial measurements of serum estradiol, estrone, and estrone sulfate.
II. To investigate treatment resistance (e.g., expression of amphiregulin, epidermal growth factor receptor [EGFR]), using molecular and immunohistochemical analyses of blood and tumor samples of pre- and post- (when available) treatment tissues. Microarray analyses to quantitate the expression of specific estrogen-responsive genes (e.g. thyroid transcription factor 1 [TTF1] and PDZK1) will also be performed.
OUTLINE: Patients receive exemestane orally (PO) once daily (QD) on days 1-14. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity.
After completion of study therapy, patients are followed periodically for 1 year.
- Conditions
- Breast Cancer
- Being tested
- exemestane, laboratory biomarker analysis, quality-of-life assessment, immunohistochemistry staining method
- Keywords
- recurrent breast cancer, stage IV breast cancer
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
exemestaneDrug
Given orally
laboratory biomarker analysisOther
One year after completion of study treatment
quality-of-life assessmentProcedure or surgery
One year after completion of study treatment
immunohistochemistry staining methodOther
Also called immunohistochemistry
Correlative studies
| Study group | Role | What they receive |
|---|---|---|
| Treatment (exemestane) | Experimental | Patients receive oral exemestane once daily on days 1-14. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity. Receives: Drug: exemestane; Other: laboratory biomarker analysis; Procedure: quality-of-life assessment; Other: immunohistochemistry staining method |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression-free Survival
Estimated using the product-limit method of Kaplan and Meier. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
Measured: Until disease progression of death from any cause, up to 3 years
Secondary outcomes (1)
Overall Response Rate
Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), >=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR
Measured: Until disease progression or off treatment, assessed up to 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Dec 2008 (estimated)
- Study start17 Dec 2008
- Primary completion26 Jun 2019
- Study completion26 Jun 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Breast CancerStudies of the same condition, open and under way.
- More trials run by City of Hope Medical CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 36 participants (actual)
Sponsor and investigators
- Lead sponsor
- City of Hope Medical Center
- Sponsor type
- University, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Responsible party
- Sponsor
- Investigators
- George Somlo, MD, Principal investigator, City of Hope Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00810797
- Sponsor's protocol ID
- 08063
- Other IDs
- P30CA033572, CHNMC-08063, CDR0000629864, NCI-2010-00761
- Status last verified
- Oct 2026
- First submitted
- 17 Dec 2008
- Last updated
- 29 Oct 2026
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 29 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Intermittent Exemestane Therapy for Metastatic Breast Cancer
- ClinicalTrials.gov ID
- NCT00810797
- Acronym / sponsor ID
- 08063
- Conditions
- Breast Cancer
- Keywords
- recurrent breast cancer, stage IV breast cancer
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 36 participants (actual)
- Lead sponsor
- City of Hope Medical CenterUniversity, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Study start
- 17 Dec 2008 (actual)
- Primary completion
- 26 Jun 2019 (actual)
- Study completion
- 26 Jun 2019 (actual)
- First posted
- 18 Dec 2008 (estimated)
- Results
- Posted 23 Sep 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
RATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using exemestane may fight breast cancer by lowering the amount of estrogen the body makes.
PURPOSE: This phase II trial is studying how well exemestane works in treating postmenopausal women with stage IV breast cancer.
Detailed description
PRIMARY OBJECTIVES:
- Progression-free survival at 4 months, as measured by Response Evaluation Criteria in Solid Tumors (RECIST).
SECONDARY OBJECTIVES:
- Objective response rate (complete response [CR] and partial response [PR]).
II. Clinical benefit (CR, PR, and stable disease >= 6 months).
III. Assessment of toxicity.
IV. Assessment of compliance with medication adherence.
- Assessment of quality of life.
VI. Assessment of bone health.
TERTIARY OBJECTIVES:
- Serial measurements of serum estradiol, estrone, and estrone sulfate.
II. To investigate treatment resistance (e.g., expression of amphiregulin, epidermal growth factor receptor [EGFR]), using molecular and immunohistochemical analyses of blood and tumor samples of pre- and post- (when available) treatment tissues. Microarray analyses to quantitate the expression of specific estrogen-responsive genes (e.g. thyroid transcription factor 1 [TTF1] and PDZK1) will also be performed.
OUTLINE: Patients receive exemestane orally (PO) once daily (QD) on days 1-14. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity.
After completion of study therapy, patients are followed periodically for 1 year.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Treatment (exemestane) | Experimental | Drug: exemestane, Other: laboratory biomarker analysis, Procedure: quality-of-life assessment, Other: immunohistochemistry staining methodPatients receive oral exemestane once daily on days 1-14. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity. |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (18 listed)
- Histologically or cytologically confirmed metastatic carcinoma of the breast
- Hormone receptor (estrogen receptor [ER] and/or progesterone receptor [PR]) positive disease (defined as: ER and/or PR positivity as >= 5% staining), as confirmed by immunohistochemistry (IHC) based on primary breast tissue or metastatic tissue
- Postmenopausal, as defined by any of the following:
- Natural menopause, with at least 1 year since last menses
- Chemotherapy-induced menopause with at least 1 year from last menses and serum luteinizing hormone (LH)/follicle-stimulating hormone (FSH) and estradiol levels within the postmenopausal range
Key exclusion criteria (9 listed)
- Prior exposure to EXE, whether in the adjuvant or metastatic setting
- Prior history of any other cancer with the exception of non-melanoma skin cancer and treated in situ carcinoma of the cervix
- Active or symptomatic central nervous system (CNS) metastasis (stable or treated brain metastasis allowed but patients must be off decadron, if given for CNS disease)
- Hormone-receptor negative or unknown breast cancer
- More than two prior chemotherapy regimen for treatment of metastatic disease (any prior chemotherapy given in the adjuvant setting is permitted)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| exemestaneGiven orally | Drug | Treatment (exemestane) |
| laboratory biomarker analysisOne year after completion of study treatment | Other | Treatment (exemestane) |
| quality-of-life assessmentOne year after completion of study treatment | Procedure or surgery | Treatment (exemestane) |
| immunohistochemistry staining methodAlso: immunohistochemistryCorrelative studies | Other | Treatment (exemestane) |
Primary outcome
Progression-free Survival
Time frame: Until disease progression of death from any cause, up to 3 years
Estimated using the product-limit method of Kaplan and Meier. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
1 secondary outcome
Overall Response Rate
Time frame: Until disease progression or off treatment, assessed up to 1 year
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Oct 2026.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
George Somlo, MD principal investigator
City of Hope Medical Center
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing exemestane, laboratory biomarker analysis and quality-of-life assessment in people with Breast Cancer, run by City of Hope Medical Center at 2 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 18 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 23 Sep 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Progression-free Survival (time frame: Until disease progression of death from any cause, up to 3 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Oct 2026.