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

This is an interventional treatment trial for Castrate Resistant Prostate Cancer Read More

Inclusion Criteria:

• 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
• patients who have other types of relapsed or refractory solid tumors 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 Absolute neutrophil count (ANC) ≥ 1,500/dL Platelet count ≥100,000/μL

• Adequate renal function:

Creatinine clearance (CLcr) estimated by Cockcroft-Gault Equation to be ≥ 60 mL/min. Estimated glomeruli filtration rate (eGRF) ≥ 60 mL/min may be used if provided by the testing laboratory

• Adequate liver function

  • Total bilirubin ≤ 1.5 x ULN except in patients diagnosed with Gilbert's disease for which direct bilirubin must be ≤ 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. Prostate cancer patients may continue androgen-deprivation therapy by luteinizing hormone-releasing hormone (LHRH) agonists.
• 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.

Exclusion Criteria:

• 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