Trial purpose
Cancer treatment
Tumor type
Genitourinary
Age
18+
Trial acronym
MK-5684-01A Substudy
Clinical summary
Summary
Substudy 01A is part of a larger research study that is testing experimental treatments for metastatic castration-resistant prostate cancer (mCRPC). The larger study is the Umbrella Study (U01).
The goal of Substudy 01A is to evaluate the safety and efficacy of opevesostat-based treatment combinations, or as a single agent, in participants with mCRPC.
This substudy will have two phases: a safety lead-in phase and an efficacy phase. The safety lead-in phase will be used to evaluate the safety and tolerability, and to establish a recommended Phase 2 dose (RP2D) for the opevesostat-based treatment combinations.
Eligible participants will be randomly allocated to one of four experimental treatment arms.
- Arm A1 will receive Opevesostat targeted therapy twice daily via oral tablet.
- Arm A2 will receive Opevesostat targeted therapy twice daily via oral tablet plus Olaparib targeted therapy twice daily via oral tablet.
- Arm A3 will receive Opevesostat targeted therapy twice daily via oral tablet plus Docetaxel chemotherapy once every 3 weeks via IV infusion.
- Arm A4 will receive Opevesostat targeted therapy twice daily via oral tablet plus Cabazitaxel chemotherapy once every 3 weeks via IV infusion.
Conditions
This trial is treating people with metastatic castration-resistant prostate cancer (mCRPC)
Eligibility
Inclusion
The main inclusion criteria include but are not limited to the following:
- Histologically or cytologically confirmed diagnosis of adenocarcinoma of the prostate without small cell histology.
- Prostate cancer progression and received androgen deprivation therapy (ADT) or post bilateral orchiectomy within 6 months before screening.
- Evidence of disease progression from either, >4 weeks from last flutamide treatment, or >6 weeks from last bicalutamide or nilutamide treatment, if receiving first generation anti-androgen therapy as last treatment therapy.
- Current evidence of metastatic disease.
- Prior treatment with 1 to 2 novel hormonal agent(s) (NHA) for non-metastatic, or metastatic, hormone-sensitive prostate cancer or castration-resistant prostate cancer and have disease progression during or after treatment.
- Treatment with bone resorptive therapy (including, but not limited to, bisphosphonate or denosumab) must have been on stable doses for >4 weeks before randomization.
- Participants who experienced adverse events (AEs) due to previous anticancer therapies must have recovered to <Grade 1 or baseline.
- Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on antiretroviral therapy.
- Participants who are Hepatitis B surface antigen (HBsAg) positive are eligible if they have received Hepatitis B Virus (HBV) antiviral therapy for at least 4 weeks, and have undetectable HBV viral load.
- Participants with a history of Hepatitis C virus (HCV) infection are eligible if HCV viral load is undetectable.
Exclusion
The main exclusion criteria include but are not limited to the following:
- History of pituitary dysfunction.
- Poorly controlled diabetes mellitus.
- Active or unstable cardio/cerebro-vascular disease, including thromboembolic events.
- History or family history of long corrected QT interval (QTc) syndrome.
- Myelodysplastic syndrome (MDS)/acute myeloid leukemia (AML) or features suggestive of MDS/AML.
- History or current condition of adrenal insufficiency.
- History of (noninfectious) pneumonitis requiring steroids, or current pneumonitis.
- HIV-infected participants with a history of Kaposi's sarcoma and/or Multicentric Castleman's Disease.
- Undergone major surgery, including local prostate intervention (except prostate biopsy) within 28 days before randomization, and has not recovered from the toxicities and/or complications.
- Is on an unstable dose of thyroid hormone therapy within 6 months prior to first dose of study intervention.
- Received a whole blood transfusion in the last 120 days before randomization (packed red blood cells and platelet transfusions are acceptable if not given within 28 days before randomization).
- Received prior systemic anticancer therapy including investigational agents within 4 weeks before randomization.
- Received prior radiotherapy within 2 weeks of start of study intervention or radiation-related toxicities, requiring corticosteroids.
- Received a live or live-attenuated vaccine within 30 days before the first does of study intervention. Administration of killed vaccines is allowed.
- Diagnosis of immunodeficiency, or is receiving chronic systemic steroid therapy, or any other form of immunosuppressive therapy, within 7 days prior to the first dose of study intervention.
- Known additional malignancy that is progressing or has required active treatment within the past 3 years.
- Known active central nervous system (CNS) metastases and/or carcinomatous meningitis.
- Active autoimmune disease that has required systemic treatment in the past 2 years.
- Active infection requiring systemic therapy.
- Concurrent active HBV and HCV infections.
Inclusion
- Your cancer has spread to other parts of the body (metastatic) or has grown into nearby parts of the body (locally advanced).
- You have had treatment but your cancer has gotten worse or has not responded to the treatment you have been given.
- You have had a certain type of treatment or surgical procedure.
Exclusion
- You have been diagnosed with a prior or secondary type of cancer.
- You have certain types of non-cancer medical conditions.
- You have had certain treatments, surgical procedures or drugs.
Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.
More information
Trial Identifiers
Information on this page is partially produced from ClinicalTrials.gov *. View further details about this trial on the registry via the links below:
Trial sponsor
Merck Sharp & Dohme LLC
Scientific Title
A Phase 1/2 Umbrella Substudy of MK-5684-U01 Master Protocol to Evaluate the Safety and Efficacy of MK-5684-based Treatment Combinations or MK-5684 Alone in Participants With Metastatic Castration-resistant Prostate Cancer (mCRPC)
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