Drug-Drug Interaction Study of Entinostat and Exemestane in Postmenopausal Women With ER+ Breast Cancer

NCT ID: NCT02820961

Last Updated: 2021-12-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

61 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-06-29

Study Completion Date

2021-07-12

Brief Summary

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The purpose of this study is to determine the effect of exemestane on the pharmacokinetics (PK) of entinostat and to determine the effect of entinostat on the PK of exemestane in patients with locally recurrent or metastatic estrogen receptor positive (ER+) breast cancer. Additionally, this study will evaluate the safety and tolerability of entinostat in combination with exemestane, and assess the effectiveness of entinostat in combination with exemestane in terms of best overall response and overall survival.

Detailed Description

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SNDX-275-0130 is a Phase 1, two-cohort, open-label, drug-drug interaction study of entinostat and exemestane. All patients will be enrolled into one of two cohorts to receive either entinostat monotherapy followed by entinostat plus exemestane (Cohort 1), or exemestane monotherapy followed by exemestane plus entinostat (Cohort 2).

The cohorts will enroll sequentially, meaning that Cohort 1 will enroll prior to Cohort 2. Cohort 1 will evaluate exemestane's effect on the PK of entinostat. Cohort 2 will evaluate entinostat's effect on the PK of exemestane. In both Cohorts, each treatment cycle will be 28 days. Patients will participate in only one cohort.

All patients will be assessed at Screening and at specified times during the conduct of the study using standard clinical and laboratory assessment. Patients will also be assessed for tumor response per standard of care after the Screening Period. Response to treatment will be assessed by computerized tomography (CT), magnetic resonance imaging (MRI) and bone scans as appropriate. Patients will continue receiving their appropriate cycles of study treatment until tumor progression or adverse events (AEs) occur which necessitate discontinuing therapy as determined by the Investigator.

Conditions

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Breast Cancer Estrogen Receptor Positive Breast Cancer

Keywords

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Breast Neoplasms Breast Diseases Exemestane Protein Kinase Inhibitors Aromatase Inhibitors entinostat Cancer of the Breast Metastatic Breast Cancer Hormone Receptor Positive Breast Cancer Estrogen Receptor ER+ Breast Cancer Breast Tumor

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Cohort 1

Cohort 1 will evaluate exemestane's effect on the PK of entinostat. Each treatment cycle is 28 days.

Group Type ACTIVE_COMPARATOR

entinostat

Intervention Type DRUG

An orally available histone deacetylases inhibitor (HDAC)

exemestane

Intervention Type DRUG

Aromatase inhibitor

Cohort 2

Cohort 2 will enroll when Cohort 1 enrollment is complete. Cohort 2 will evaluate entinostat's effect on the PK of exemestane. Each treatment cycle is 28 days.

Group Type ACTIVE_COMPARATOR

entinostat

Intervention Type DRUG

An orally available histone deacetylases inhibitor (HDAC)

exemestane

Intervention Type DRUG

Aromatase inhibitor

Interventions

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entinostat

An orally available histone deacetylases inhibitor (HDAC)

Intervention Type DRUG

exemestane

Aromatase inhibitor

Intervention Type DRUG

Other Intervention Names

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SNDX-275 MS-275 Aromasin FCE-24304

Eligibility Criteria

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Inclusion Criteria

* Postmenopausal female patients
* Histologically or cytologically confirmed ER+ breast cancer at initial diagnosis and have locally recurrent or metastatic disease that has progressed to where the patient is a candidate to receive exemestane as determined by the Investigator
* Patients receiving palliative radiation at the non-target lesions must be clinically stable prior to receiving the first dose of study treatment
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
* Patient must have acceptable, applicable laboratory requirements
* Patients may have a history of brain metastasis provided certain protocol criteria are met
* Able to understand and give written informed consent and comply with study procedures

Exclusion Criteria

* Rapidly progressive or life-threatening metastases
* Inability to swallow oral medications or gastrointestinal (GI) malabsorption syndromes
* History of significant GI surgery as determined by Investigator
* A medical condition that precludes adequate study treatment or increases patient risk
* Currently enrolled in (or completed within 30 days prior to study drug administration) another investigational drug study
Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Syndax Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Michael Meyers, MD, PhD

Role: STUDY_DIRECTOR

Syndax Pharmaceuticals

Locations

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Sarah Cannon Research Institute HealthONE

Denver, Colorado, United States

Site Status

Florida Cancer Specialists

Sarasota, Florida, United States

Site Status

Sarah Cannon Research Institute

Nashville, Tennessee, United States

Site Status

Countries

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United States

Other Identifiers

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SNDX-275-0130

Identifier Type: -

Identifier Source: org_study_id