Azacitidine and Entinostat in Treating Patients With Advanced Breast Cancer

• Sponsor: National Cancer Institute (NCI) (NIH)
• Overall Status: Active, not recruiting
• CT.gov ID: NCT01349959
• Collaborator: (none)
• Enrollment: 58
• Locations: 7
• Arm: 1
• Patients Per Site: 8.3

Study Details

Study Description

Brief Summary

This phase II trial studies how well giving azacitidine and entinostat work in treating patients with advanced breast cancer. Drugs used in chemotherapy, such as azacitidine, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Entinostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving azacitidine together with entinostat may kill more tumor cells.

Condition or Disease	Intervention/Treatment	Phase
Male Breast Carcinoma; Recurrent Breast Carcinoma; Stage IIIC Breast Cancer AJCC v7; Stage IV Breast Cancer AJCC v6 and v7; Triple-Negative Breast Carcinoma	Drug: Azacitidine; Drug: Entinostat; Other: Laboratory Biomarker Analysis; Other: Pharmacological Study	Phase 2

Detailed Description

PRIMARY OBJECTIVES:

1. To evaluate objective response rate by Response Evaluation Criteria In Solid Tumors (RECIST) criteria of the combination of azacitidine (5-AZA) and entinostat in women with advanced breast cancer; triple-negative and hormone-refractory.

SECONDARY OBJECTIVES:

1. To determine the safety and tolerability of the combination of 5-AZA and entinostat in women with advanced breast cancer.

2. To determine progression-free survival, overall survival, and clinical benefit rate of the combination of 5-AZA and entinostat.

TERTIARY OBJECTIVES:

1. To collect safety and toxicity data as well as the feasibility and response rate where hormonal therapy is added to the combination under investigation at the time of progressive disease. (Exploratory) II. To determine the pharmacokinetic profile of 5-AZA (full profile) and entinostat (trough concentrations) in patients with advanced breast cancer. (Exploratory)
2. To assess serum cytidine deaminase pharmacogenetics and phenotypic activity as a potential biomarker of response to 5-AZA. (Exploratory) IV. To evaluate baseline and change in candidate gene re-expression (e.g., estrogen receptor [ER] alpha, retinoic acid receptor [RAR] beta) in malignant tissue obtained from selected patients through fine-needle aspiration (FNA) and core biopsy, prior to and following combination therapy. (Exploratory)
3. To evaluate baseline and change in gene methylation silencing in circulating deoxyribonucleic acid (DNA) obtained prior to and following combination therapy. (Exploratory) VI. To evaluate baseline and change in gene methylation in malignant tissue obtained through FNA and core biopsy. (Exploratory)

OUTLINE: This is a multicenter study.

Patients receive azacitidine subcutaneously (SC) on days 1-5 and 8-10, and entinostat orally (PO) on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring.

After completion of study therapy, patients are followed up every 3-6 months for up to 3 years.

Study Design

• Study Type: Interventional
• Actual Enrollment: 58 participants
• Allocation: N/A
• Intervention Model: Single Group Assignment
• Masking: None (Open Label)
• Primary Purpose: Treatment
• Official Title: Phase II Study of Azacitidine and Entinostat (SNDX-275) in Patients With Advanced Breast Cancer
• Actual Study Start Date: Apr 21, 2011
• Actual Primary Completion Date: Mar 27, 2014

Arms and Interventions

Arm

Intervention/Treatment

Experimental: Treatment (entinostat and azacitidine) Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring.

Drug: Azacitidine; Given SC; Other Names: 5 AZC 5-AC 5-Azacytidine 5-AZC Azacytidine Azacytidine, 5- Ladakamycin Mylosar Onureg U-18496 Vidaza ; Drug: Entinostat; Given PO; Other Names: HDAC inhibitor SNDX-275 MS 27-275 MS-275 SNDX-275 ; Other: Laboratory Biomarker Analysis; Correlative studies; Other: Pharmacological Study; Correlative studies

Outcome Measures

Primary Outcome Measures

1. Confirmed Response Rate (Percentage of Participants With Complete or Partial Response Noted as the Objective Status on Two Consecutive Evaluations at Least 4 Weeks Apart) Assessed by RECIST [Up to 3 years]

   Percentage of participants with complete or partial response will be estimated independently for each cohort by the number of successes divided by the total number of evaluable patients. Confidence intervals for the true success proportion will be calculated according to the approach of Duffy and Santner.

Secondary Outcome Measures

1. Clinical Benefit Rate [Up to 3 years]

   Clinical benefit rate estimated by the number of patients who achieve a confirmed response plus the number of patients who have stable disease for a duration of at least 6 months divided by the total number of evaluable patients. All evaluable patients will be used for this analysis.

2. Overall Survival [Up to 3 years]

   Median number of months alive, estimated by Kaplan-Meier method.

3. Progression-free Survival (PFS) [6 months]

   Median number of months without progression. Estimated using the method of Kaplan-Meier.

Other Outcome Measures

1. Number of Participants With Change in Expression of Relevant Genes (e.g., ER Alpha and RAR Beta) Evaluated by Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) [Baseline to up to 8 weeks]

   Number of participants with a change in candidate gene re-expression of ER-alpha and RAR beta evaluated by reverse transcriptase polymerase chain reaction (RT-PCR).

2. Circulating DNA Evaluated Using QM-MSP [Up to 8 weeks]

   Data will also be graphically displayed showing trend in median values across time. Nonparametric Wilcoxon signed rank tests will be used to determine whether or not the data shows evidence of changes from baseline.

3. Confirmed Response Rate to Azacitidine and Entinostat Plus the Addition of Hormone Therapy [Up to 3 years]

   Will be estimated in each cohort. All evaluable patients who receive hormonal therapy will be used for this analysis.

4. Feasibility of the Addition of Hormone Therapy, Evaluated by Calculating the Number of Patients With Disease Progression That go on to Receive Hormonal Therapy [Up to 3 years]

5. Number of Participants With Change in Gene Methylation Evaluated Using Quantitative Multiple Methylation-specific Polymerase Chain Reaction (QM-MSP) [Up to 8 weeks]

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years and Older
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

Inclusion Criteria:

• Patient must have histologically or cytologically confirmed adenocarcinoma of the breast triple-negative (ER-, progesterone receptor [PR]-, human epidermal growth factor receptor 2 [HER2]-) or hormone positive/ HER2-, with evidence of locally advanced and inoperable or metastatic disease (American Joint Committee on Cancer [AJCC] Stage IV)

• NOTE: Triple-negative patients will be defined per American Society of Clinical Oncology-College of American Pathologists (ASCO-CAP) Guidelines; these guidelines state that ER and PR assays be considered positive if there are at least 1% positive tumor nuclei in the sample on testing in the presence of expected reactivity of internal (normal epithelial elements) and external controls

• A patient who has a change in receptor status (e.g., PR negative to positive) may be stratified as triple negative or hormone positive, contrary to the most recent receptor testing, for the purposes of the study based upon the clinical course at the discretion of the Study Chair; for HER2 assessment, a negative result is an immuno-histochemistry staining of 0 or 1+, a fluorescence in situ hybridization (FISH) result of less than 4.0 HER2 gene copies per nucleus, or a FISH ratio of less than 1.8

• Patients with triple negative disease must have progressed through at least 1 prior chemotherapy regimen (administered in the adjuvant or metastatic setting); hormone receptor-positive patients must have progressed through two lines of hormonal therapy (administered in the adjuvant or metastatic setting), unless otherwise eligible as per below, and at least 1 prior chemotherapy regimen (administered in the adjuvant or metastatic setting) with no known curative options available

• NOTE: Patients with hormone receptor-positive disease may be considered eligible if deemed clinically hormone-resistant taking into consideration the rate of progression of disease or a short interval of time on first line hormonal therapy before progression, or if intolerant of hormonal therapy such that further hormonal therapy will not be considered as part of the treatment strategy

• In patients with metastatic disease in the liver, liver disease burden is limited to no more than 30% of total liver volume as assessed by local review

• Patients must have measurable disease

• Life expectancy of >= 12 weeks

• Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1

• Hemoglobin (HgB) >= 9.0 g/dL

• Absolute neutrophil count (ANC) >= 1,500/mcL

• Platelet count >= 100,000/mcL

• Total bilirubin =< 1.5 x institutional upper limit of normal (ULN); an exception to this may be allowed for participants with Gilbert's syndrome with documented approval by the Protocol Chair

• Serum glutamic oxaloacetic transaminase (SGOT) (aspartate aminotransferase [AST]) =< 3 x ULN

• Creatinine =< institutional ULN or creatinine clearance >= 60 mL/min using the Modified Cockcroft-Gault formula

• Negative (serum or urine) pregnancy test done =< 7 days prior to registration, for women of childbearing potential only

• Patient must have an accessible tumor lesion from which a biopsy specimen can be obtained; NOTE: if baseline biopsy is attempted and is unsuccessful (eg, patient intolerance, inadequate tissue), the patient will still be considered eligible for the study

• Ability to understand and the willingness to sign a written informed consent document

• Willingness to provide tissue and blood samples for mandatory translational research

• Willingness to return to the enrolling institution for follow-up

Exclusion Criteria:

• Any of the following:

• Pregnant women

• Nursing women

• Men or women of childbearing potential who are unwilling to employ adequate contraception

• NOTE: should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately

• Any of the following:

• Chemotherapy < 3 weeks prior to registration

• Hormone therapy < 3 weeks prior to registration

• Radiotherapy < 3 weeks prior to registration

• Surgery < 3 weeks prior to registration

• Nitrosoureas/mitomycin C < 6 weeks prior to registration

• Trastuzumab < 6 weeks prior to registration

• Bevacizumab < 6 weeks prior to registration

• Those who have not recovered from acute adverse events to grade < 2 or baseline due to agents administered, with exception of alopecia, unless approved by the Protocol Chair

• NOTE: concurrent bisphosphonate therapy is allowed; concurrent ovarian suppression therapy (i.e., Lupron or Zoladex) is also allowed at the discretion of the Protocol Chair/designee

• Any other ongoing investigational agents

• Known sensitivity to 5-AZA, entinostat or mannitol

• Uncontrolled intercurrent illness that in the judgment of the investigator, would make the patient inappropriate for entry into this study or interfere significantly with the proper assessment of safety and toxicity of the prescribed regimens including, but not limited to:

• Ongoing or active infection

• Symptomatic congestive heart failure (New York Heart Association [NYHA] class II or above)

• Unstable angina pectoris

• Cardiac arrhythmia

• Psychiatric illness/social situations that would limit compliance with study requirements

• Other co-morbid systemic illness or other severe concurrent disease

• Active malignancy other than breast cancer =< 3 years prior to registration; EXCEPTIONS: non-melanotic skin cancer or carcinoma-in-situ of the cervix; NOTE: if there is a history of prior malignancy, they must not be receiving other specific treatment for their cancer

• Immunocompromised patients (other than that related to the use of corticosteroids) including patients known to be human immunodeficiency virus (HIV) positive

• Received prior treatment with HDAC (histone deacetylase) inhibitors or demethylating agents =< 2 weeks prior to registration

• Unstable brain metastases; NOTE: patients with brain metastases must have stable neurologic status and magnetic resonance imaging (MRI) imaging following local therapy (surgery or radiation) for at least 4 weeks, with no dexamethasone requirement (stable low dose dexamethasone allowed at discretion of Study Chair); patients with leptomeningeal disease are not eligible

• Patient taking valproic acid

• Patient who cannot swallow tablets

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	City of Hope Comprehensive Cancer Center	Duarte	California	United States	91010
2	USC / Norris Comprehensive Cancer Center	Los Angeles	California	United States	90033
3	University of California Davis Comprehensive Cancer Center	Sacramento	California	United States	95817
4	Johns Hopkins University/Sidney Kimmel Cancer Center	Baltimore	Maryland	United States	21287
5	Unity Hospital	Fridley	Minnesota	United States	55432
6	Metro Minnesota Community Oncology Research Consortium	Saint Louis Park	Minnesota	United States	55416
7	University of Pittsburgh Cancer Institute (UPCI)	Pittsburgh	Pennsylvania	United States	15232

Sponsors and Collaborators

• National Cancer Institute (NCI)

Investigators

• Principal Investigator: Vered Stearns, Johns Hopkins University/Sidney Kimmel Cancer Center

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: National Cancer Institute (NCI)
• ClinicalTrials.gov Identifier: NCT01349959
• Other Study ID Numbers: NCI-2011-02585; NCI-2011-02585; CDR0000698726; SKCCC J1107; 8822; N01CM00099; N01CM00038; N01CM62205; P30CA006973; U01CA099168; U01CA070095; UM1CA186691
• First Posted: May 9, 2011
• Last Update Posted: Jun 29, 2022
• Last Verified: Jun 1, 2022

• Additional relevant MeSH terms: Carcinoma; Breast Neoplasms; Breast Neoplasms, Male; Azacitidine; Entinostat; Histone Deacetylase Inhibitors

Study Results

Participant Flow

Pre-assignment Detail	58 consented, 18 screen failed and did not receive study treatment

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Period Title: Overall Study
STARTED	40
COMPLETED	33
NOT COMPLETED	7

Baseline Characteristics

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Overall Participants	40
Age (Count of Participants)
<=18 years	0 0%
Between 18 and 65 years	35 87.5%
>=65 years	5 12.5%
Sex: Female, Male (Count of Participants)
Female	40 100%
Male	0 0%
Ethnicity (NIH/OMB) (Count of Participants)
Hispanic or Latino	4 10%
Not Hispanic or Latino	35 87.5%
Unknown or Not Reported	1 2.5%
Race (NIH/OMB) (Count of Participants)
American Indian or Alaska Native	0 0%
Asian	0 0%
Native Hawaiian or Other Pacific Islander	0 0%
Black or African American	6 15%
White	31 77.5%
More than one race	3 7.5%
Unknown or Not Reported	0 0%
Region of Enrollment (Count of Participants)
United States	40 100%

Outcome Measures

1. Primary Outcome

Title	Confirmed Response Rate (Percentage of Participants With Complete or Partial Response Noted as the Objective Status on Two Consecutive Evaluations at Least 4 Weeks Apart) Assessed by RECIST
Description	Percentage of participants with complete or partial response will be estimated independently for each cohort by the number of successes divided by the total number of evaluable patients. Confidence intervals for the true success proportion will be calculated according to the approach of Duffy and Santner.
Time Frame	Up to 3 years

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
Triple-negative Breast Cancer (TNBC)	0 0%
Hormone-resistant Breast Cancer (HRBC)	4 10%

2. Secondary Outcome

Title	Clinical Benefit Rate
Description	Clinical benefit rate estimated by the number of patients who achieve a confirmed response plus the number of patients who have stable disease for a duration of at least 6 months divided by the total number of evaluable patients. All evaluable patients will be used for this analysis.
Time Frame	Up to 3 years

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
TNBC	0 0%
HRBC	1 2.5%

3. Secondary Outcome

Title	Overall Survival
Description	Median number of months alive, estimated by Kaplan-Meier method.
Time Frame	Up to 3 years

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
TNBC	6.6
HRBC	12.6

4. Secondary Outcome

Title	Progression-free Survival (PFS)
Description	Median number of months without progression. Estimated using the method of Kaplan-Meier.
Time Frame	6 months

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
TNBC	1.4
HRBC	1.8

5. Other Pre-specified Outcome

Title	Number of Participants With Change in Expression of Relevant Genes (e.g., ER Alpha and RAR Beta) Evaluated by Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)
Description	Number of participants with a change in candidate gene re-expression of ER-alpha and RAR beta evaluated by reverse transcriptase polymerase chain reaction (RT-PCR).
Time Frame	Baseline to up to 8 weeks

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC). However, data was only evaluable in 19/40 participants (5/13 TNBC, and 14/40 HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	19
TNBC	0 0%
HRBC	14 35%

6. Other Pre-specified Outcome

Title	Circulating DNA Evaluated Using QM-MSP
Description	Data will also be graphically displayed showing trend in median values across time. Nonparametric Wilcoxon signed rank tests will be used to determine whether or not the data shows evidence of changes from baseline.
Time Frame	Up to 8 weeks

Outcome Measure Data

Analysis Population Description

[Not Specified]

Arm/Group Title

Arm/Group Description

7. Other Pre-specified Outcome

Title	Confirmed Response Rate to Azacitidine and Entinostat Plus the Addition of Hormone Therapy
Description	Will be estimated in each cohort. All evaluable patients who receive hormonal therapy will be used for this analysis.
Time Frame	Up to 3 years

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
TNBC	0 0%
HRBC	1 2.5%

8. Other Pre-specified Outcome

Title	Feasibility of the Addition of Hormone Therapy, Evaluated by Calculating the Number of Patients With Disease Progression That go on to Receive Hormonal Therapy
Time Frame	Up to 3 years

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
TNBC	4 10%
HRBC	12 30%

9. Other Pre-specified Outcome

Title	Number of Participants With Change in Gene Methylation Evaluated Using Quantitative Multiple Methylation-specific Polymerase Chain Reaction (QM-MSP)
Time Frame	Up to 8 weeks

Outcome Measure Data

Analysis Population Description

There were 13/40 participants with triple-negative breast cancer (TNBC) and 27/40 participants with hormone-resistant breast cancer (HRBC).

Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
Measure Participants	40
TNBC	0 0%
HRBC	14 35%

Adverse Events

Time Frame	1 year
Adverse Event Reporting Description	CTCAE criteria
Arm/Group Title	Treatment (Entinostat and Azacitidine)
Arm/Group Description	Patients receive azacitidine SC on days 1-5 and 8-10, and entinostat PO on days 3 and 10. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue azacitidine and entinostat in combination with hormonal therapy, at treating physician discretion, or undergo event monitoring. Azacitidine: Given SC Entinostat: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
All Cause Mortality
	Treatment (Entinostat and Azacitidine)
	Affected / at Risk (%)	# Events
Total	33/40 (82.5%)
Serious Adverse Events
	Treatment (Entinostat and Azacitidine)
	Affected / at Risk (%)	# Events
Total	2/40 (5%)
Gastrointestinal disorders
Nausea	2/40 (5%)	2
Vomiting	2/40 (5%)	2
General disorders
Death	1/40 (2.5%)	1
Infections and infestations
Skin Infection	1/40 (2.5%)	1
Investigations
White blood cell decreased	1/40 (2.5%)	1
Neutrophil count decreased	1/40 (2.5%)	1
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Disease Progression	2/40 (5%)	2
Respiratory, thoracic and mediastinal disorders
Dyspnea	2/40 (5%)	2
Pleural Effusion	1/40 (2.5%)	1
Vascular disorders
Thromboembolic event	2/40 (5%)	2
Other (Not Including Serious) Adverse Events
	Treatment (Entinostat and Azacitidine)
	Affected / at Risk (%)	# Events
Total	6/40 (15%)
Blood and lymphatic system disorders
Neutropenia	6/40 (15%)

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is less than or equal to 60 days. The sponsor cannot require changes to the communication and cannot extend the embargo.