Prostate Cancer Intensive, Non-Cross Reactive Therapy (PRINT) for Castration Resistant Prostate Cancer (CRPC)

Clinical Trial of a Rapidly Cycling, Non-Cross Reactive Regimen of Approved Therapeutic Agents to Treat Prostate Cancer

The purpose of this study is to determine the clinical benefits of using a rapidly cycling, non-cross reactive regimen of FDA-approved prostate cancer therapeutic agents in the management of castration resistant prostate cancer. The hypothesis is that the identification of optimal combinations and sequencing of therapies can help prevent or delay the development of therapeutic drug resistance, and can be safely tolerated.

Study Overview

• Status: Completed
• Conditions: Prostate Cancer
• Intervention / Treatment: Drug: Abiraterone acetate; Drug: Prednisone; Drug: Radium-223 dichloride; Drug: cabazitaxel; Drug: Carboplatin; Drug: Enzalutamide

Detailed Description

This phase II clinical trial will explore the efficacy of rapidly cycling non-cross reactive treatment therapies in the treatment of patients with newly diagnosed mCRPC. The primary hypothesis is that the best chance of eliminating or controlling disease is when the cancer is treatment naïve, and has not yet developed therapeutic resistance. By finding an optimal drug deployment strategy of already approved and available treatments for mCRPC, the researchers believe providers can more effectively treat an intrinsically heterogeneous disease, delay/prevent drug resistance, as well as minimize treatment toxicity.

All of the treatment agents selected have well-defined individual toxicity profiles from large phase III trials, but there is limited clinical data about the toxicity profiles of these drugs in combinations. While each agent is generally well tolerated, toxicities remain a significant concern given the older age of the typical mCRPC patient, the comorbid conditions common to this patient population, as well as those borne from previous chronic androgen deprivation therapy.

Each drug in the proposed treatment regimen will be used at their FDA-approved dosing and indication, with the exception of cabazitaxel, which will be used prior to disease demonstration of docetaxel failure, and in combination with carboplatin. The proposed sequencing is rationally designed, and based on each drug's distinct mechanisms of action as well as their toxicity profiles.

The rapidly-cycling treatment regimen contains three, separate, consecutive treatment modules, each lasting 3 months: 1. Abiraterone; 2. Cabazitaxel + Carboplatin; 3. Enzalutamide + Radium-223. Therapeutic agents are delivered as non-cross reactive combinations, in order to achieve optimal therapeutic dosing at each cycle and decrease possibility of significant adverse effects.

To the researcher knowledge, no study has evaluated the use of rapidly cycling, non-cross reactive therapies for the treatment of mCRPC. The hypothesis is that the identification of optimal combinations and sequencing of rapidly cycling non-cross reactive therapies can help prevent or delay the development of therapeutic drug resistance, and can be safely tolerated.

Primary objective is to evaluate the time to disease progression after completion of all modules of the rapidly-cycling, non-cross reactive regimen in patients with mCRPC. Secondary objectives are to evaluate overall survival, prostate-specific antigen (PSA) response rate with each treatment module, changes to alkaline phosphatase level, and assess safety of the rapidly-cycling, non-cross reactive regimen. Additional exploratory objective are to evaluate the correlation of a peripheral whole-blood RNA signature with clinical outcome measures during and after treatment, and to evaluate changes to AR-V7 expression in CTCs with different treatment modalities and clinical outcomes.

• Study Type: Interventional
• Enrollment (Actual): 40
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • New York
    • New York, New York, United States, 10028
      • Icahn School of Medicine at Mount Sinai
    • New York, New York, United States, 10011
      • Mount Sinai Beth Israel

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Histologically or cytologically confirmed adenocarcinoma of the prostate
• Metastatic castrate resistant prostate cancer, defined by progressive disease based on either rising PSA, new bone metastases, or progression of measurable disease on standard imaging, according to PCWG2 guidelines, despite androgen deprivation therapy
• Ongoing androgen deprivation therapy with a GnRH analogue, GnRH antagonist, or bilateral orchiectomy
• ECOG performance status 0-1
• Serum testosterone level < 50 ng/dL
• Absolute neutrophil count > 1,500/μL, platelet count > 100,000/μL, and hemoglobin > 9 g/dL
• Creatinine < 2 mg/dL
• Total bilirubin < 1 times the upper limit of normal, alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≤ 1.5 times the upper limit of normal

Exclusion Criteria:

• History of uncontrolled seizure disorder

• Clinically significant cardiovascular disease including:

  1. Myocardial infarction or uncontrolled angina within 6 months
  2. Congestive heart failure New York Heart Association (NYHA) class 3 or 4, or patients with history of congestive heart failure NYHA class 3 or 4 in the past
  3. Uncontrolled hypertension as indicated by a resting systolic blood pressure > 170 mmHg or diastolic blood pressure > 105 mmHg at the screening visit
• Have used or plan to use from 30 days prior to enrollment through the end of the study medication known to lower the seizure threshold or prolong the QT interval
• Major surgery within 4 weeks of enrollment
• Radiation therapy within 4 weeks of enrollment
• Prior use of abiraterone acetate, enzalutamide, docetaxel, cabazitaxel, carboplatin, or radium-223 for the treatment of castration-resistant disease
• Prior docetaxel use in the hormone-sensitive disease setting is allowed, but must be completed ≥ 4 weeks prior to enrollment
• Prior sipuleucel-T use is allowed, but must be completed ≥ 4 weeks prior to enrollment
• Concurrent use of zoledronic acid or denosumab is allowed on study

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Intensive, Non-Cross Reactive Therapy; Prostate Cancer Rapidly cycling, Intensive, Non-Cross Reactive Therapy (PRINT) Rapidly cycling, consecutive treatment modules: 1. Abiraterone acetate; 2. Cabazitaxel + Carboplatin; 3. Enzalutamide + Radium-223	Drug: Abiraterone acetate; Abiraterone acetate 1000 mg PO daily; Drug: Prednisone; 5 mg PO twice a day; Drug: Radium-223 dichloride; 50 kBq/kg IV monthly; Drug: cabazitaxel; 25 mg/m2 IV every 3 weeks; Drug: Carboplatin; Carboplatin AUC 4 IV every 3 weeks; Drug: Enzalutamide; 160 mg PO daily

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time to Disease Progression	Time to disease progression, as determined by either PSA or radiographic progression, after completion of all modules of the rapidly-cycling, non-cross reactive regimen in patients with mCRPC. Time to progression (TTP) is defined as beginning with the time the first dose of PCD regimen is administered until disease progression.	47.8 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall Survival (OS)	Overall survival defined as the time of study entry to death from any cause.	47.8 months
Overall Rate of Survival	Overall rate of survival at 40 months. Overall rate of Survival as defined by likelihood that a participant on the study is still alive at 40 months follow up	40 months
Number of Participants With PSA Response Rate >90%	PSA response rate - >90% decrease in PSA compared to baseline	up to 36 weeks
Number of Participants With PSA Response Rate >=50%	Number of participants with PSA response rate >=50% decrease in PSA compared to baseline	up to 36 weeks
Number of Participants With PSA Progression Compared to Baseline.	PSA changes was reported globally using a waterfall plot for each module. In participants who have a decline in PSA value from baseline, progression is defined by: An increase in PSA by 25% above the nadir, AND; An increase in PSA by a minimum of 2 ng/ml, or an increase in PSA to the pre-treatment PSA value, AND; Confirmation by a second PSA at least 3 weeks apart, AND; Occur following at least 12 weeks of therapy, AND; There is no objective evidence of disease response. In participants whose PSA value from baseline has not declined from baseline, progression is defined by: An increase in PSA by 25% above either the pre-treatment level, or the nadir PSA level (whichever is lowest), AND; An increase in PSA by a minimum of 2 ng/ml, AND; Confirmation by a second PSA at least 3 weeks apart, AND; Occur following at least 12 weeks of therapy, AND; There is no objective evidence of disease response.	up to 36 weeks
Number of Participants With Stable PSA as Compared to Baseline	Participants with a 50% PSA decline from their baseline PSA level will be considered responders, provided objective tumor measurements are stable or also demonstrate response. Participants with a 25% PSA increase from their baseline PSA will be considered nonresponders. Participants that do not meet criteria for responder or nonresponder, will be considered to have stable disease.	up to 36 weeks
Number of Participants With Normal Alkaline Phosphatase Levels	Number of participants who converted from elevated to normal range of alkaline phosphatase levels at 9 months from baseline	baseline and 36 weeks

Collaborators and Investigators

• Sponsor: Icahn School of Medicine at Mount Sinai
• Collaborators: Sanofi; Bayer
• Investigators: Principal Investigator: Bobby Liaw, MD, Icahn School of Medicine at Mount Sinai

Study record dates

Study Major Dates

• Study Start (Actual): January 13, 2017
• Primary Completion (Actual): November 15, 2021
• Study Completion (Actual): November 15, 2021

Study Registration Dates

• First Submitted: September 7, 2016
• First Submitted That Met QC Criteria: September 12, 2016
• First Posted (Estimated): September 16, 2016

Study Record Updates

• Last Update Posted (Actual): February 7, 2024
• Last Update Submitted That Met QC Criteria: January 16, 2024
• Last Verified: January 1, 2024

More Information

Terms related to this study

• Keywords: Prostate cancer; Metastatic; Treatment naive; First-line; Castration resistant; Rapidly cycling; Non-cross resistant
• Additional Relevant MeSH Terms: Neoplasms; Urogenital Neoplasms; Neoplasms by Site; Genital Neoplasms, Male; Prostatic Diseases; Urogenital Diseases; Male Urogenital Diseases; Genital Diseases, Male; Genital Diseases; Prostatic Neoplasms; Physiological Effects of Drugs; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; Anti-Inflammatory Agents; Antineoplastic Agents; Glucocorticoids; Hormones; Hormones, Hormone Substitutes, and Hormone Antagonists; Antineoplastic Agents, Hormonal; Cytochrome P-450 Enzyme Inhibitors; Hormone Antagonists; Steroid Synthesis Inhibitors; Carboplatin; Prednisone; Abiraterone Acetate; Radium Ra 223 dichloride
• Other Study ID Numbers: GCO 16-1593; CABAZL07459 (Other Identifier: Sanofi); ONC-2014-168 (Other Identifier: Bayer)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO