A First-in-Human Study of MEN2312 in Adults With Advanced Breast Cancer

NCT ID: NCT06638307

Last Updated: 2026-02-13

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

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

240 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-25

Study Completion Date

2026-10-31

Brief Summary

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This is a first-in-human study of MEN2312, a lysine acetyltransferase 6 (KAT6) inhibitor, in adult participants with advanced breast cancer.

Detailed Description

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Conditions

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Advanced Breast Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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MEN2312: Monotherapy

Participants will receive MEN2312.

Group Type EXPERIMENTAL

MEN2312

Intervention Type DRUG

MEN2312 administered as oral tablets.

MEN2312: Combination Therapy (Elacestrant)

Participants will receive MEN2312 in combination with elacestrant.

Group Type EXPERIMENTAL

MEN2312

Intervention Type DRUG

MEN2312 administered as oral tablets.

Elacestrant

Intervention Type DRUG

Elacestrant administered as oral tablets.

Interventions

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MEN2312

MEN2312 administered as oral tablets.

Intervention Type DRUG

Elacestrant

Elacestrant administered as oral tablets.

Intervention Type DRUG

Other Intervention Names

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Orserdu

Eligibility Criteria

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Inclusion Criteria

* Participant has advanced (locoregionally recurrent or metastatic) breast cancer not amenable to curative therapy.
* Participant must have received at least one prior line of endocrine therapy for advanced/metastatic disease or participant who has radiological evidence of breast cancer recurrence or progression during or within 12 months from the end of or during adjuvant treatment with endocrine therapy, as these participants are considered as first-line relapsed participants. Progression on previous cyclin-dependent kinase 4/6 inhibitor treatment in combination with fulvestrant or aromatase inhibitor is required. No other therapeutic options are considered appropriate by the investigator.
* Up to 6 prior lines of systemic therapy (including up to 2 prior lines consisting of chemotherapy, cytotoxic antibody drug conjugate, or a combination of both regimens) are allowed in the advanced/metastatic setting.
* Presence of genetic alterations in PIK3CA/AKT1/PTEN in participants' tumor tissue.

Exclusion Criteria

* Active or newly diagnosed central nervous system metastases.
* Participants with advanced, symptomatic visceral spread, who are at risk of life-threatening complications in the short term, including massive uncontrolled effusions (peritoneal, pleural, pericardial), pulmonary lymphangitis, or liver involvement \>50%.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Stemline Therapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Highlands Oncology Group

Springdale, Arkansas, United States

Site Status RECRUITING

UC San Diego Moores Cancer Center

La Jolla, California, United States

Site Status RECRUITING

UCSF Helen Diller Family Comprehensive Cancer Center

San Francisco, California, United States

Site Status RECRUITING

UCLA Hematology Oncology - Parkside

Santa Monica, California, United States

Site Status RECRUITING

Yale Comprehensive Cancer Center

New Haven, Connecticut, United States

Site Status RECRUITING

Advent Health Orlando

Altamonte Springs, Florida, United States

Site Status RECRUITING

Sarah Cannon Research Institute at Florida Cancer Specialists

Orlando, Florida, United States

Site Status RECRUITING

Florida Cancer Specialists & Research Institute (FCS) - Sarasota

Sarasota, Florida, United States

Site Status RECRUITING

Sidney Kimmel Comprehensive Cancer Center

Baltimore, Maryland, United States

Site Status RECRUITING

Massachusetts General Hospital Cancer Center

Boston, Massachusetts, United States

Site Status RECRUITING

Dana-Farber Cancer Institute

Boston, Massachusetts, United States

Site Status RECRUITING

START Midwest - Oncology

Grand Rapids, Michigan, United States

Site Status RECRUITING

Mayo Clinic

Rochester, Minnesota, United States

Site Status RECRUITING

Astera Cancer Care

East Brunswick, New Jersey, United States

Site Status RECRUITING

SCRI Oncology Partners Group

Nashville, Tennessee, United States

Site Status RECRUITING

The University of Texas M.D. Anderson Cancer Center

Houston, Texas, United States

Site Status RECRUITING

START San Antonio, LLC

San Antonio, Texas, United States

Site Status RECRUITING

University of Texas Health Science Center San Antonio

San Antonio, Texas, United States

Site Status RECRUITING

START Mountain

West Valley City, Utah, United States

Site Status RECRUITING

NEXT Virginia

Fairfax, Virginia, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Stemline Trials

Role: CONTACT

1-877-332-7961

Other Identifiers

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2024-514661-19-00

Identifier Type: CTIS

Identifier Source: secondary_id

U1111-1308-5349

Identifier Type: OTHER

Identifier Source: secondary_id

MEN2312-01

Identifier Type: -

Identifier Source: org_study_id

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