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A PHASE I DOSE ESCALATION AND EXPANDED COHORT STUDY OF PF 06821497 (MEVROMETOSTAT) IN THE TREATMENT OF ADULT PATIENTS WITH RELAPSED/REFRACTORY SMALL CELL LUNG CANCER (SCLC), CASTRATION RESISTANT PROSTATE CANCER (CRPC) AND FOLLICULAR LYMPHOMA (FL)


Description

A Phase 1 Dose Escalation and Expanded Cohort Study Of PF-06821497 (Mevrometostat) in Adult Patients With Relapsed/Refractory Small Cell Lung Cancer (SCLC), Castration Resistant Prostate Cancer (CRPC) And Follicular Lymphoma (FL).This is an open label, multi center, Phase 1 dose escalation and dose expansion study of mevrometostat (PF-06821497) administered orally BID as a single agent or in combination with SOC to patients with CRPC, SCLC, and FL. The study consists of Part 1, Part 2 and the Japan and China monotherapy cohorts Part 1A will evaluate safety and target modulation of mevrometostat monotherapy in patients with SCLC, FL and CRPC. Mevrometostat will be administered as monotherapy in escalating doses to patients with FL (Part 1B) and mCRPC (Part 1C) to determine the monotherapy MTD. In Part 2A (dose escalation, RP2D finding for dose escalation), mevrometostat will be administered in combination with SOC to patients with mCRPC and SCLC. Japan and China monotherapy cohorts will

Trial Eligibility

Key Inclusion Criteria: Histological or cytological diagnosis of advanced / metastatic solid tumor with the following tumor types in individual study parts: Part 1A (closed to enrollment): Part 1B (closed to enrollment): Part 1C: * Metastatic Castration resistant prostate cancer. Patients should have received either abiraterone and/or enzalutamide treatment and have evidence of prostate cancer progression (per PCWG3) Japan cohort * Castration resistant prostate cancer that is resistant to SOC or for which no local regulatory approved SOC is available that would confer significant clinical benefit in the medical judgement of the investigator. Patients should have received either abiraterone and/or enzalutamide treatment and have evidence of prostate cancer progression (per PCWG3) China cohort * Castration resistant prostate cancer that is intolerant/resistant to SOC or for which no local regulatory approved SOC is available that would confer significant clinical benefit in the medical judgement of the investigator. Patients who refused SOC may be eligible. Patients should have received either abiraterone and/or enzalutamide treatment and have evidence of prostate cancer progression (per PCWG3) Part 2A: • Metastatic Castration resistant prostate cancer. Patients should have received either abiraterone and/or enzalutamide treatment, may have received up to 1 line of chemotherapy and have evidence of prostate cancer progression (per PCWG3) Part 2B/2C: * Metastatic Castration resistant prostate cancer. Patients should have received abiraterone treatment, may have received up to 1 prior line of chemotherapy, have not received prior enzalutamide, apalutamide or darolutamide and have evidence of prostate cancer progression (per PCWG3) * Patients must have radiographic evidence of disease Other inclusion criteria: -Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1. Key Exclusion Criteria: - Prior Chemotherapy: Part 1C , Japan cohort and China cohort (CRPC): no more than 2 previous regimens of chemotherapy Part 2A: mCRPC: no more than 1 previous regimen of systemic chemotherapy Part 2B (mCRPC): no more than 1 previous regimen of chemotherapy * Prior irradiation to \>25% of the bone marrow. * QTcF interval \>480 msec at screening. * Hypertension that cannot be controlled by medications (\>150/90 mmHg despite optimal medical therapy). * Known or suspected hypersensitivity to PF 06821497 or any components or enzalutamide (CRPC) * Active inflammatory gastrointestinal disease, chronic diarrhea, known diverticular disease or previous gastric resection or lap band surgery. Gastroesophageal reflux disease under treatment with proton pump inhibitors is allowed. * Current use or anticipated need for food or drugs that are known strong CYP3A4/5 inducers or inhibitors, including their administration within 10 days or 5 half lives of the CYP3A4/5 inhibitor, whichever is longer prior to first dose of investigational product.

Study Info

Organization

Pfizer


Primary Outcome

Percentage of patients with dose limiting toxicities (DLTs) to determine the maximum tolerated dose (MTD)


Outcome Timeframe Baseline up to 90 days

NCTID NCT03460977

Phases PHASE1

Primary Purpose TREATMENT

Start Date 2018-04-17

Completion Date 2025-12-09

Enrollment Target 343

Interventions

DRUG Mervometostat (PF-06821497)

DRUG Enzalutamide

Locations Recruiting

Urological Associates of Southern Arizona, P.C .

United States, Arizona, Tucson


Banner-University Medical Center Tucson

United States, Arizona, Tucson


The University of Arizona Cancer Center-North Campus

United States, Arizona, Tucson


The University of Arizona Cancer Center

United States, Arizona, Tucson


Urological Associates of Southern Arizona, PC

United States, Arizona, Tucson


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