A Study to Assess the Efficacy and Safety of Enzalutamide With Trastuzumab in Patients With Human Epidermal Growth Factor Receptor 2 Positive (HER2+), Androgen Receptor Positive (AR+) Metastatic or Locally Advanced Breast Cancer

NCT ID: NCT02091960

Last Updated: 2025-04-04

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

103 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-09-05

Study Completion Date

2024-01-30

Brief Summary

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The purpose of this study was to evaluate the efficacy of enzalutamide with trastuzumab in patients with HER2+ AR+ metastatic or locally advanced breast cancer.

Detailed Description

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Conditions

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HER2 Amplified Advanced Breast Cancer Human Epidermal Growth Factor Receptor 2 (HER2)

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Enzalutamide + Trastuzumab

Participants received 160 mg enzalutamide orally once daily and 6 mg/kg trastuzumab administered by intravenous infusion or subcutaneous injection every 21 days. Participants continued on treatment until disease progression, unacceptable toxicity or any other discontinuation criteria were met.

Group Type EXPERIMENTAL

Enzalutamide

Intervention Type DRUG

Capsules for oral administration

Trastuzumab

Intervention Type DRUG

Intravenous infusion (IV) or subcutaneous injection if it is standard of care within a country

Interventions

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Enzalutamide

Capsules for oral administration

Intervention Type DRUG

Trastuzumab

Intravenous infusion (IV) or subcutaneous injection if it is standard of care within a country

Intervention Type DRUG

Other Intervention Names

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MDV3100 Xtandi Herceptin

Eligibility Criteria

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Inclusion Criteria

* The subject has histologically or cytologically proven adenocarcinoma of the breast that is HER2+
* The subject has AR+ breast cancer
* The subject has metastatic disease or has locally advanced disease that is not amendable to curative treatment
* The subject has measurable disease or nonmeasurable, evaluable disease per RECIST 1.1. (NOTE: pleural effusions, ascites or other third fluid space are not evaluable diseases per RECIST 1.1).
* The subject has received at least 1 line of therapy in the metastatic or locally advanced disease setting. The subject has been documented to have progressed by determination of the investigator on a regimen containing an anti-HER2 agent as the most recent regimen or the most recent anti-HER2 regimen was discontinued for any toxicity, with the exception of a cardiotoxicity.
* The subject has adequately recovered from toxicities due to prior therapy.
* The subject has an Eastern Cooperative Oncology Group performance (ECOG) status ≤ 1 at Screening and Day 1
* The subject has available at the site a representative, formalin-fixed, paraffin-embedded, tumor specimen that enabled the definitive diagnosis of breast cancer with adequate viable tumor cells in a tissue block (preferred) or ≥ 10 (20 preferred) freshly cut, unstained, serial slides and the associated pathology report

Exclusion Criteria

* The subject has a severe concurrent disease, infection, or comorbidity that would make the subject inappropriate for enrollment.
* The subject has current or previously treated brain metastasis or active leptomeningeal disease. Brain imaging is required during screening in all subjects to exclude the presence of unequivocal central nervous system disease.
* The subject has a history of a non-breast cancer malignancy with the following exceptions:

* The subject with a previous history of a non-invasive carcinoma is eligible if he/she has had successful curative treatment any time prior to Screening.
* For all other malignancies, the subject is eligible if they have undergone potentially curative therapy and they have been considered disease free for at least 5 years prior to Screening.
* The subject has a history of seizure or any condition that may predispose to seizure (e.g., prior cortical stroke, significant brain trauma).
* The subject has a history of loss of consciousness, cerebrovascular accident, or transient ischemic attack within 12 months before the Day 1 visit.
* The subject has had a hypoglycemic episode requiring medical intervention while on insulin (or other anti-diabetic) treatment within 12 months before Day 1.
* The subject had a major surgical procedure, substantial open biopsy, or significant traumatic experience within 28 days before the Day 1 visit, or anticipation of need for major surgical procedure during the course of the study.
* The subject has had palliative radiation therapy to bone metastases within 14 days prior to the Day 1 visit (side effects from radiation must be resolved).
* The subject has received chemotherapy, immunotherapy, or any other systemic anticancer therapy, with the exception of anti-HER2 therapy (e.g., trastuzumab), within 14 days prior to the Day 1 visit.
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Medivation LLC, a wholly owned subsidiary of Pfizer Inc.

INDUSTRY

Sponsor Role collaborator

Astellas Pharma Global Development, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Executive Medical Director

Role: STUDY_DIRECTOR

Astellas Pharma Global Development, Inc.

Locations

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Site US10051

Anaheim, California, United States

Site Status

Site US10028

Los Angeles, California, United States

Site Status

Site US10035

San Francisco, California, United States

Site Status

Site US10079

Fort Myers, Florida, United States

Site Status

Site US10074

Gainesville, Florida, United States

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Site US10081

Chicago, Illinois, United States

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Site US10004

Indianapolis, Indiana, United States

Site Status

Site US10070

Boston, Massachusetts, United States

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Site US10078

St Louis, Missouri, United States

Site Status

Site US10072

Cincinnati, Ohio, United States

Site Status

Site US10048

Pittsburgh, Pennsylvania, United States

Site Status

Site US10029

Knoxville, Tennessee, United States

Site Status

Site US10042

Nashville, Tennessee, United States

Site Status

Site US10077

Nashville, Tennessee, United States

Site Status

Site US10076

Fort Worth, Texas, United States

Site Status

Site US10082

Houston, Texas, United States

Site Status

Site BE32003

Edegem, Antwerp, Belgium

Site Status

Site BE32013

Brasschaat, , Belgium

Site Status

Site BE32016

Brussels, , Belgium

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Site BE32001

Charleroi, , Belgium

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Site BE32009

Leuven, , Belgium

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Site BE32007

Liège, , Belgium

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Site CA15022

Ottawa, Ontario, Canada

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Site CA15023

Toronto, Ontario, Canada

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Site CA15028

Regina, Saskatchewan, Canada

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Site CA15026

Saskatoon, Saskatchewan, Canada

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Site CA15001

Québec, , Canada

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Site IT39005

Meldola, Forli, Italy

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Site IT39008

Lecce, , Italy

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Site IT39003

Milan, , Italy

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Site IT39002

Milan, , Italy

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Site IT39001

Sondrio, , Italy

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Site IT39021

Udine, , Italy

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Site ES34014

Pozuelo de Alarcón, Madrid, Spain

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Site ES34010

Barcelona, , Spain

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Site ES34013

Madrid, , Spain

Site Status

Site GB44003

Edinburgh, , United Kingdom

Site Status

Site GB44013

Manchester, , United Kingdom

Site Status

Site GB44001

Nottingham, , United Kingdom

Site Status

Countries

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United States Belgium Canada Italy Spain United Kingdom

References

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Wardley A, Cortes J, Provencher L, Miller K, Chien AJ, Rugo HS, Steinberg J, Sugg J, Tudor IC, Huizing M, Young R, Abramson V, Bose R, Hart L, Chan S, Cameron D, Wright GS, Graas MP, Neven P, Rocca A, Russo S, Krop IE. The efficacy and safety of enzalutamide with trastuzumab in patients with HER2+ and androgen receptor-positive metastatic or locally advanced breast cancer. Breast Cancer Res Treat. 2021 May;187(1):155-165. doi: 10.1007/s10549-021-06109-7. Epub 2021 Feb 16.

Reference Type DERIVED
PMID: 33591468 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

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https://www.trialsummaries.com/Study/StudyDetails?id=14609&tenant=MT_AST_9011

Link to plain language summary of the study on the Trial Results Summaries website

Other Identifiers

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2013-000093-29

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

9785-CL-1121

Identifier Type: -

Identifier Source: org_study_id

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