Description:
This is a randomized two arm phase II study to further evaluate the efficacy of fulvestrant
plus enza compared to single agent fulvestrant in postmenopausal women with locally advanced
AR+/ER+/Her2- BC who will have local surgery after ~4 months on treatment.
Title
- Brief Title: Preoperative Fulvestrant With or Without Enzalutamide in ER+/Her2- Breast Cancer
- Official Title: Randomized Phase II Trial of Preoperative Fulvestrant With or Without Enzalutamide in ER+/Her2- Breast Cancer
Clinical Trial IDs
- ORG STUDY ID:
16-1042.cc
- NCT ID:
NCT02955394
Conditions
Interventions
Drug | Synonyms | Arms |
---|
Enzalutamide | MDV3100 | Fulvestrant With Enzalutamide |
Fulvestrant | FASLODEX | Fulvestrant With Enzalutamide |
Purpose
This is a randomized two arm phase II study to further evaluate the efficacy of fulvestrant
plus enza compared to single agent fulvestrant in postmenopausal women with locally advanced
AR+/ER+/Her2- BC who will have local surgery after ~4 months on treatment.
Detailed Description
This is a randomized two arm phase II study to further evaluate the efficacy of fulvestrant
plus enza compared to single agent fulvestrant in postmenopausal women with locally advanced
AR+/ER+/Her2- BC who will have local surgery after ~4 months on treatment. After consent, all
patients will get a tissue biopsy, and than half the patients will get fulvestrant alone
(standard dosing) and the other half of the patients will get fulvestrant plus enzalutamide.
At ~4 weeks, a biopsy will be done and therapy will be continued. Hormone therapy will
continue for ~4 months at which point the patients will undergo surgical resection.
Trial Arms
Name | Type | Description | Interventions |
---|
Fulvestrant Without Enzalutamide | Placebo Comparator | 500 mg of Fulvestrant will be given IM on days 1, 15, 28, then every 4 weeks as per standard of care (SOC) | |
Fulvestrant With Enzalutamide | Experimental | 500 mg of Fulvestrant will be given IM on days 1, 15, 28, then every 4 weeks as per standard of care (SOC), plus160mg of Enzalutamide will be given daily. | |
Eligibility Criteria
Inclusion Criteria:
- ER+ Her2- breast cancer
- Stage at least T2 or greater
- Planned to get local surgery
- Postmenopausal, or if pre- or peri- menopausal, then will need to have concurrent
ovarian suppression.
- At least 18 years of age
- Not on anticoagulants
- PS 0-2
- Able to swallow study drug and comply with study requirements
- ANC >1000/uL, platelets >75,000/uL at screening visit
- Total bilirubin < 1.5 times upper limit of normal (ULN) at the screening visit unless
an alternate nonmalignant etiology exists (eg, Gilbert's disease)
- Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) < 3 times ULN or <
5 times ULN if patient has documented liver metastases
- Creatinine < 1.5 times ULN
- INR < 1.5 times ULN, or if on warfarin, can safely transition off for biopsy
- Willing to donate blood for research at 4 time points
- Willing to undergo core biopsies for research at study entry and at ~4 weeks.
- Willing to donate tissue to research from the surgical specimen
- Written informed consent obtained prior to biopsies and blood samples
Exclusion Criteria:
- Current or previously treated brain or leptomeningeal metastases
- History of seizures
- Prior treatment with an anti-androgen (abiraterone, ARN-509, bicalutamide,
enzalutamide, ODM-201, TAK-448, TAK-683, TAK-700, VT-464).
- Systemic estrogens or androgens within 14 days before initiating therapy. Vaginal
estrogens are allowed if necessary for patient comfort.
Maximum Eligible Age: | 101 Years |
Minimum Eligible Age: | 18 Years |
Eligible Gender: | Female |
Healthy Volunteers: | No |
Primary Outcome Measures
Measure: | Document the number of patients in both treatment arms separately who have a PEPI score equal to 0 at post treatment |
Time Frame: | 16 Weeks |
Safety Issue: | |
Description: | The preoperative endocrine prognostic index (PEPI) is a validated measure of pathologic response to endocrine therapy. |
Secondary Outcome Measures
Measure: | Progression-free survival (PFS) |
Time Frame: | 16 Weeks |
Safety Issue: | |
Description: | To determine the percentage of progression-free survival (PFS) (complete and partial response plus stable disease) for the single drug arm and combination of enzalutamide/fulvestrant arm separately. |
Measure: | Correlate PEPI score and Progression-free survival, Clinical Benefit Rate, and Overall Response Rate |
Time Frame: | 16 Weeks |
Safety Issue: | |
Description: | To assess the association between PEPI score and the clinical, outcomes such as PFS, ORR, clinical benefit for all subjects. |
Measure: | Androgen Receptor (AR) expression |
Time Frame: | 16 Weeks |
Safety Issue: | |
Description: | Nuclear AR expression and AR pathway expression correlation with clinical outcomes. AR expression is associated with resistance to anti-estrogen therapy. Its blockade may enhance response. |
Measure: | Clinical Benefit Rate |
Time Frame: | 16 weeks |
Safety Issue: | |
Description: | To determine the percentage of clinical benefit rate (complete and partial response plus stable disease) for the single drug arm and combination of enzalutamide/fulvestrant arm separately. |
Details
Phase: | Phase 2 |
Primary Purpose: | Interventional |
Overall Status: | Recruiting |
Lead Sponsor: | University of Colorado, Denver |
Trial Keywords
- ER+/Her2 - breast cancer
- Preoperative Fulvestrant
- Enzalutamide
Last Updated
April 23, 2021