A Phase 1 Study of ES414 in Patients Wtih Metastatic Castration-Resistant Prostate Cancer
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 35
- 试验地点
- 14
- 主要终点
- Maximum Tolerated Dose of ES414
研究概览
简要总结
The study will be conducted in 2 Stages. The primary objective of Stage 1 of the study is to identify the maximum tolerated dose (MTD) of ES414 administered intravenously to patients with mCRPC. Secondary objectives are to evaluate the tolerability, pharmacokinetics (PK), pharmacodynamics (PD), immunogenicity, cytokine response, and clinical activity of ES414.
The primary objective of Stage 2 of the study is to evaluate the clinical activity of ES414 in patients that have or have not received prior chemotherapy. Secondary objectives are to further characterize the safety profile, PK, PD, and immunogenicity of ES414.
详细描述
Stage 1 - Dose Escalation: The dose escalation stage of the study will test weekly doses of 0.2 mcg/kg to 300 mcg/kg over 9 dose levels (cohorts). Cohorts 1 to 3 consist of single patients and Cohorts 4 - 9 will consist of a minimum of 3 patients; an additional 3 patients may be added to the cohort if adverse events possibly related to ES414 or dose-limiting toxicities (DLT) occur. The next dose cohort will only enroll after the patient(s) in the current dose cohort have completed the first cycle of dosing (4 weeks) with no significant adverse events or DLTs. Six patients will be enrolled at the maximum tolerated dose (MTD) and this dose will be used for Stage 2.
Stage 2 - Expansion: The continuous intravenous infusion MTD dose regimen will be further examined in 2 expansion cohorts; the first cohort are patients that have received prior chemotherapy, such as docetaxel for mCRPC, and the second cohort are those that have not received prior chemotherapy for mCRPC. Serum samples will be collected for serial PK assessment for ES414 drug levels and antibody formation. Response will be assessed every 2 months during the first 6 months of treatment and then every 3 months until progression of mCRPC, intolerable side effects, or withdrawal of consent.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 性别
- Male
- 接受健康志愿者
- 否
入选标准
- •Histologically or cytologically confirmed adenocarcinoma of the prostate. No evidence of neuroendocrine differentiation or small cell features.
- •Surgically or medically castrated, with testosterone ≤ 50 ng/dL (≤ 1.7 nmol/L).
- •Progressive prostate cancer by either serum PSA levels, soft tissue or bone disease as defined by the PCWG2 criteria.
- •In Stage 1, patients may or may not have received prior chemotherapy for mCRPC. In Stage 2, patients will be enrolled into two cohorts based on whether or not they have received prior chemotherapy for mCRPC. Any prior chemotherapy must have been completed ≥ 4 weeks prior to administration of ES
- •Additionally, in countries where abiraterone or enzalutamide are commercially available, patients in Stage 1 and 2 must have progressed on abiraterone and/or enzalutamide prior to study entry.
- •Life expectancy > 6 months per investigator
- •Adequate hematologic, renal, and hepatic parameters
排除标准
- •Any chemotherapy, sipuleucel-T, or investigational drug in prior 4 weeks, or abiraterone or enzalutamide in prior 2 week
- •Any radiation therapy in prior 2 weeks
- •Any prior therapy targeted against PSMA
- •History of seizures
- •History of central nervous system metastasis
- •History of nephrotic syndrome
- •Spot urine total protein:creatinine ratio >1,000 mg/gm
- •Planned palliative procedures for alleviation of bone pain
- •Active infection requiring treatment with systemic anti-infectives or major surgery in prior 4 weeks.
- •Any prednisone (or equivalent corticosteroids) use within 2 weeks of study entry
- •Chronic immunosuppressive therapy
- •Known history of HIV, hepatitis B, or hepatitis C infection
- •Evidence of severe or uncontrolled systemic diseases
- •History of bleeding disorders or thromboembolic events in prior 3 months
研究组 & 干预措施
ES414
Cohorts 1-3 of the dose escalation stage of the study (Stage 1) will test weekly doses of 0.2 mcg/kg to 2 mcg/kg. Cohorts 4-9 of the dose escalation stage of the study (Stage 1) will test continuous infusion at flat doses of 25 mcg to 300 mcg per day delivered continuously over 24 hours. The maximum tolerated dose from Stage 1 of the study will be further examined in Stage 2. Patients in cohorts 1-3 will receive ES414 weekly via intravenous (IV) infusion during the first three 28-day cycles and then on Day 1 and 15 of each subsequent cycle until disease progression, intolerable toxicity occurs, or the patient withdraws consent. Patients in cohorts 4-9 will receive ES414 as a continuous IV infusion for 6 months until disease progression, intolerable toxicity occurs, or the patient withdraws consent.
干预措施: ES414 (Biological)
结局指标
主要结局
Maximum Tolerated Dose of ES414
时间窗: during first 28 days of treatment
Identify the maximum tolerated dose in dose-escalation stage (Stage 1) by assessment of dose-limiting toxicities
次要结局
- Response Evaluation Criteria in Solid Tumors (RECIST 1.1)(Baseline and 6 months)
- Circulating Tumor Cells(Patients will be followed for the duration of treatment, an expected average of 6 months, and for 28 days following last treatment)
- Safety Profile of ES414(Patients will be followed for the duration of treatment, an expected average of 6 months, and for 28 days following last treatment)
- Maximum Serum Drug Concentration (Cmax)(Pre- and post-infusion at least weekly during first 28-day cycle, and on Days 1 and 15 of subsequent cycles for an expected duration of 6 months, and for up to 8 weeks following last treatment)
- Elimination half-life (T1/2)(Pre- and post-infusion at least weekly during first 28-day cycle, and on Days 1 and 15 of subsequent cycles for an expected duration of 6 months, and for up to 8 weeks following last treatment)
- Pharmacodynamics of ES414(Patients will be followed for the duration of treatment, an expected average of 6 months, and for 28 days following last treatment)
- PSA Response(Baseline and 6 months)
- Area under the concentration versus time curve (AUC)(Pre- and post-infusion at least weekly during first 28-day cycle, and on Days 1 and 15 of subsequent cycles for an expected duration of 6 months, and for up to 8 weeks following last treatment)
- Immune-Related Response Criteria (irRC)(Baseline and 6 months)
- Immunogenicity of ES414(Patients will be followed for the duration of treatment, an expected average of 6 months, and for 8 weeks following last treatment)