Abiraterone-Rechallenge Study for CRPC Patients (ABI-RE)

March 22, 2017 updated by: Aurelius Omlin

An Open Label Biomarker Driven Phase II Clinical Trial of Abiraterone Acetate (AA) Re-Challenge in Patients With Metastatic Castration-Resistant Prostate Cancer and Prior Response to AA

To assess activity of abiraterone-re-challenge in patients with advanced prostate cancer and prior response to abiraterone.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

To assess activity of abiraterone-re-challenge in patients with advanced prostate cancer and prior response to abiraterone. CRPC patients with prior response to abiraterone (confirmed PSA Response) and progression can be re-challenged with abiraterone. Patients may have received treatment with docetaxel, enzalutamide and radium-223.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
4

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
      • Basel, Switzerland, 4000
        • University Hospital Basel
      • St.Gallen, Switzerland, 9007
        • Cantonal Hospital St.Gallen
    • Graubuenden
      • Chur, Graubuenden, Switzerland, 7000
        • Cantonal Hospital Chur

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 100 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  1. Written prostate cancer.
  2. Adult patients with histological or cytological diagnosis of adenocarcinoma of the prostate.
  3. Men with castration-resistant metastatic decline maintained for at least 3 weeks as per PCWG2 criteria).
  4. Confirmed biochemical response to prior abiraterone acetate (≥50% PSA Informed Consent (including consent for biomarker studies including the fresh tumour biopsies)
  5. Progressive disease according to PCWG2 criteria during prior therapy with standard dose of abiraterone acetate (confirmed increase of PSA ≥25% over nadir) or soft-tissue or bone progression. Patients that have stopped abiraterone acetate for reasons other than progression are not eligible.

  6. Documented progression of disease by any of the criteria listed here:

    • PSA
    • Soft tissue
    • Bone scan all as per PCWG2 criteria
  7. Patients may have received treatment with docetaxel, enzalutamide or radium-223
  8. PSA of ≥10ug/l
  9. ECOG performance status 0 - 2
  10. At least 3 months (90 days) since stop of prior abiraterone acetate.

Exclusion Criteria:

  1. Major surgery within 28 days weeks prior to start of treatment
  2. Prior treatment with cabazitaxel or the CYP-17 inhibitor TAK-700/orteronel
  3. Any concurrent treatment or prior treatment with an investigational drug within 28 days prior to start of treatment.
  4. Known brain or leptomeningeal disease
  5. Concurrent use of steroids other than prednisone >10mg/d

  6. Inadequate bone marrow and organ function as evidenced by:

    Platelet count <75 x 10 G/L ASAT and/or ALAT ≥ 2.5 x ULN Total bilirubin ≥ 1.5 x ULN (≥ 2.0 x ULN for patients with Gilbert's disease) Hypokalaemia despite adequate supplementation Creatinine Clearance <30ml/min

  7. Uncontrolled hypertension or cardiac failure or LVEF <50%

creatinine clearance is to be calculated by using the formula of Cockcroft-Gault in appendix 4 of the protocol

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Abiraterone
Abiraterone acetate 1000 mg once daily and Prednisone 2x5 mg daily (continuously as per prescription label).
Drug: abiraterone acetate
Abiraterone acetate 1000 mg once daily and Prednisone 2x5 mg daily (continuously as per prescription label).
Other Names:
  • Zytiga

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Response rate
Time Frame: at week 12
Soft-tissue and PSA Response per PCWG2
at week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Rate of CTC conversion
Time Frame: Measured at baseline and at 12 weeks
Rate of CTC conversion from a baseline count of ≥5/7.5ml to <5/7.5ml
Measured at baseline and at 12 weeks
Rate of PSA decline 30%
Time Frame: at week 12
Rate of PSA declines of ≥30% at 12 weeks and at any time on study thereafter
at week 12
rPFS
Time Frame: From date of start of treatment up to 6 months
From date of start of treatment until the date of first documented progression or date of death from any cause, whichever came first
From date of start of treatment up to 6 months
Disease control rate
Time Frame: at 12 and 24 weeks
Disease control rate at 12 and 24 weeks (defined as SD, PR, CR, see response criteria)
at 12 and 24 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Aurelius Omlin

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
University Hospital, Basel, Switzerland
Cantonal Hospital of St. Gallen

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Aurelius G Omlin, MD, Cantonal Hospital St. Gallen

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 1, 2017

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 1, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 4, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 13, 2016

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 15, 2016

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 24, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 22, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CTU 14/020

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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