Dual BET and CBP/p300 Inhibitor in Patients With Targeted Advanced Solid Tumors and Hematological Malignancies

Recruiting now · Phase 1

Conditions studied: Castrate Resistant Prostate Cancer, NUT Carcinoma, Chronic Myelomonocytic Leukemia, Myelofibrosis

In brief

A Phase 1, first-in-human study of EP31670, a dual BET and CBP/p300 inhibitor in patients with targeted advanced solid tumors and Hematological Malignancies

Key facts

Study ID

NCT05488548

Run by

Epigenetix, Inc.

People needed

75

Starts

2022-12-21

Expected to finish

2025-05-01

Last updated by the study team

2025-01-14

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Part 1
• Relapse or refractory castration-resistant prostate cancer (CRPC) following at least one anti-androgen regimen and a docetaxel-containing regimen OR
• metastatic or unresectable NUT midline carcinoma for which standard curative or palliative measures do not exist; OR
• Part 2
• relapsed or refractory CMML following at least 4 cycles of hypomethylating agent-containing regimen or hydroxyurea unless demonstration of progression or intolerance;
• advanced MF (intermediate or high-risk) following at least one JAK inhibitor-containing regimen or unsuitable candidates for JAK inhibitor treatments.
• Part 3: advanced MF (intermediate or high-risk) with ≤10% blasts in peripheral blood who have not achieved an adequate response or have lost the response to a JAK inhibitor-containing regimen after being on treatment for at least 3 months.
• Patients who have other types of relapsed or refractory solid tumors (Part 1) or hematological malignancies (Part 2) with pathological and/or biological features suggesting a potential benefit from dual BET and CBP/p300 inhibition may be enrolled after discussion with and approval from medical monitor and sponsor.
• Eastern Cooperative Oncology Group (ECOG) performance status 0-1 Life expectancy ≥ 3 months Evaluable disease
• Adequate bone marrow function:
• Hemoglobin ≥ 9.0 g/dL (Part 1)
• Absolute neutrophil count (ANC) ≥ 1,500/dL (Part 1)
• Platelet count ≥100,000/μL (Part 1) or ≥75,000/μL (Part 3)
• Adequate renal function: Creatinine clearance (CLcr) ≥ 60 mL/min
• Adequate liver function: total bilirubin ≤ 1.5 x ULN; alanine aminotransferase (ALT) or aspartate Aminotransferase (AST) ≤ 2.5 x ULN or ≤ 5 x ULN in patients with liver metastases
• Internal normalized ratio for prothrombin time (INR) ≤ 1.2 in patients not receiving chronic anticoagulation
• Four weeks from prior anti-cancer therapy including chemotherapy, immunotherapy, investigational anti-cancer therapy or 5 half-lives from targeted agents, radiation and have recovered from prior treatment toxicities to grade 1 or less.
• Four weeks from major surgery.
• For fertile men and women, agreement to use effective contraceptive methods duration of study participation and 4 weeks after the last dose of study drug.
• Ability to understand and willingness to sign the informed consent form.

You may not qualify if…

• New and progressive central nervous system (CNS) metastasis; patients with treated brain metastases are eligible if follow-up brain imaging at least 4 weeks after CNS-directed therapy shows no evidence of progression and the patient is neurologically stable
• Corrected QT interval ≥470 msec
• Uncontrolled concurrent illnesses including, but not limited to, ongoing active infection requiring intravenous antibiotics or antifungal agents, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia or psychiatric illness/social situations that would affect compliance with study requirements; patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of EP31670 are eligible for this trial
• Pregnant or lactating women
• Known history of hepatitis B, hepatitis C requiring antiviral treatment
• Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial

Where it is running

• Mayo Clinic Arizona — Phoenix, Arizona, United States (enrolling)
• Mayo Clinic Florida — Jacksonville, Florida, United States (enrolling)
• Dana Farber Cancer Institute — Boston, Massachusetts, United States (enrolling)
• Mayo Clinic Rochester — Rochester, Minnesota, United States (enrolling)
• The University of Texas MD Anderson Cancer Center — Houston, Texas, United States (enrolling)
• University of Washington/Fred Hutchinson Cancer Center — Seattle, Washington, United States (enrolling)

Full record on ClinicalTrials.gov

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