Study of Cabozantinib in Combination With Abiraterone in Chemotherapy-Naïve Subjects With Bone-Metastatic Castration-Resistant Prostate Cancer
Primary Purpose
Prostate Cancer, Castration Resistant Prostate Cancer, Prostatic Neoplasms
Status
Terminated
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
cabozantinib
abiraterone
prednisone
Sponsored by

About this trial
This is an interventional treatment trial for Prostate Cancer focused on measuring CRPC, castration resistant prostate cancer, prostate cancer
Eligibility Criteria
Inclusion Criteria:
- Histologically or cytologically confirmed adenocarcinoma of the prostate.
- Must be surgically or medically castrated (serum testosterone levels less than or equal to 50 ng/dL)
- Must have castration-resistant prostate cancer (CRPC) with disease progression during LHRH therapy or after a surgical bilateral orchiectomy.
- Bone metastasis related to prostate cancer
- Adequate organ and marrow function
- Capable of understanding and complying with the protocol requirements and signed the informed consent document
- Sexually active subjects and their partners must agree to use medically accepted methods of barrier contraception (eg, male condom or female condom) as well as one other medically accepted method of contraception during the course of the study treatment and for 4 months after the last dose of study treatment.
Exclusion Criteria:
- Any prior treatment with abiraterone, enzalutamide, or any investigational agents blocking androgen receptor (AR) or androgen synthesis.
- Any prior treatment with cabozantinib or participation in a prior clinical trial of cabozantinib.
- Any prior cytotoxic therapy (including estramustine) or biologic therapy for the treatment of prostate cancer (a few exceptions will be allowed)
- Any prior radionuclide therapy (eg, samarium 153, strontium 89, alpharadin)
- Use of investigational agent within 28 days
- Any pathological finding consistent with small cell carcinoma of the prostate
- Known brain metastases or cranial epidural disease
- Diagnosis of another malignancy within 2 years, except for superficial non-melanoma skin cancers, or localized, low grade tumors deemed cured and not treated with systemic therapy
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm Type
Experimental
Experimental
Experimental
Active Comparator
Arm Label
Cabozantinib arm 1
Cabozantinib arm 2
Cabozantinib arm 3
Abiraterone only arm (4)
Arm Description
Subjects randomized to this arm will receive cabozantinb 40 mg daily with abiratarone and prednisone
Subjects randomized to this arm will receive cabozantinib 20 mg daily with abiraterone and prednisone
Subjects randomized to this arm will receive cabozantinb 20 mg every other day with abiraterone and prednisone
Subjects randomized to this arm will receive abiraterone with prednisone only
Outcomes
Primary Outcome Measures
Radiographic progression free survival (PFS)
PFS is defined as the time from randomization to the earlier of the following events: disease progression or death due to any cause
Secondary Outcome Measures
Full Information
1. Study Identification
Unique Protocol Identification Number
NCT01995058
Brief Title
Study of Cabozantinib in Combination With Abiraterone in Chemotherapy-Naïve Subjects With Bone-Metastatic Castration-Resistant Prostate Cancer
Official Title
A Randomized Phase 2 Study of Cabozantinib (XL184) in Combination With Abiraterone in Chemotherapy Naïve Subjects With Bone-Metastatic Castration-Resistant Prostate Cancer
Study Type
Interventional
2. Study Status
Record Verification Date
February 2015
Overall Recruitment Status
Terminated
Why Stopped
Study stopped after results of cabozantinib Phase 3 CRPC study XL184-307.
Study Start Date
December 2013 (undefined)
Primary Completion Date
November 2014 (Actual)
Study Completion Date
November 2014 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Exelixis
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
This study is designed to evaluate the safety and efficacy of combining abiraterone (with prednisone) with cabozantinib in chemotherapy-naïve subjects with bone-metastatic castration-resistant prostate cancer (CRPC).
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Prostate Cancer, Castration Resistant Prostate Cancer, Prostatic Neoplasms
Keywords
CRPC, castration resistant prostate cancer, prostate cancer
7. Study Design
Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
54 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Cabozantinib arm 1
Arm Type
Experimental
Arm Description
Subjects randomized to this arm will receive cabozantinb 40 mg daily with abiratarone and prednisone
Arm Title
Cabozantinib arm 2
Arm Type
Experimental
Arm Description
Subjects randomized to this arm will receive cabozantinib 20 mg daily with abiraterone and prednisone
Arm Title
Cabozantinib arm 3
Arm Type
Experimental
Arm Description
Subjects randomized to this arm will receive cabozantinb 20 mg every other day with abiraterone and prednisone
Arm Title
Abiraterone only arm (4)
Arm Type
Active Comparator
Arm Description
Subjects randomized to this arm will receive abiraterone with prednisone only
Intervention Type
Drug
Intervention Name(s)
cabozantinib
Other Intervention Name(s)
XL184
Intervention Description
Tablets taken orally
Intervention Type
Drug
Intervention Name(s)
abiraterone
Other Intervention Name(s)
Zytiga(R), abiraterone acetate
Intervention Description
Tablets taken orally daily
Intervention Type
Drug
Intervention Name(s)
prednisone
Intervention Description
Tablets taken orally twice daily
Primary Outcome Measure Information:
Title
Radiographic progression free survival (PFS)
Description
PFS is defined as the time from randomization to the earlier of the following events: disease progression or death due to any cause
Time Frame
Up to 18 months
Other Pre-specified Outcome Measures:
Title
Safety and tolerability as assessed by adverse events
Description
Subjects are followed for safety as assessed by adverse events at least through 30 days after the date of a decision to permanently discontinue study treatment.
Time Frame
Up to 18 months
Title
Pharmacokinetic Pre-dose Plasma Concentrations of both cabozantinib and abiraterone when administered in combination
Description
When administered in combination, both cabozantinib and abiraterone plasma concentrations will be measured prior to dosing on selected visits
Time Frame
Days 1-4, Week 3, Week 5, Week 7, Week 9, Week 17, and Week 41
Title
Overall survival
Description
Overall survival is defined as the time from randomization to death from any cause.
Time Frame
Up to 36 months
Title
Bone scan response by computer-aided detection (CAD)
Description
Bone scans will be evaluated by an independent radiology facility for response
Time Frame
Up to 18 months
Title
Pharmacokinetic Plasma Area Under the Curve (AUC)
Description
For selected subjects, the plasma AUC of cabozantinib and abiraterone will be measured at Week 5
Time Frame
Week 5
10. Eligibility
Sex
Male
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Histologically or cytologically confirmed adenocarcinoma of the prostate.
Must be surgically or medically castrated (serum testosterone levels less than or equal to 50 ng/dL)
Must have castration-resistant prostate cancer (CRPC) with disease progression during LHRH therapy or after a surgical bilateral orchiectomy.
Bone metastasis related to prostate cancer
Adequate organ and marrow function
Capable of understanding and complying with the protocol requirements and signed the informed consent document
Sexually active subjects and their partners must agree to use medically accepted methods of barrier contraception (eg, male condom or female condom) as well as one other medically accepted method of contraception during the course of the study treatment and for 4 months after the last dose of study treatment.
Exclusion Criteria:
Any prior treatment with abiraterone, enzalutamide, or any investigational agents blocking androgen receptor (AR) or androgen synthesis.
Any prior treatment with cabozantinib or participation in a prior clinical trial of cabozantinib.
Any prior cytotoxic therapy (including estramustine) or biologic therapy for the treatment of prostate cancer (a few exceptions will be allowed)
Any prior radionuclide therapy (eg, samarium 153, strontium 89, alpharadin)
Use of investigational agent within 28 days
Any pathological finding consistent with small cell carcinoma of the prostate
Known brain metastases or cranial epidural disease
Diagnosis of another malignancy within 2 years, except for superficial non-melanoma skin cancers, or localized, low grade tumors deemed cured and not treated with systemic therapy
Facility Information:
City
Scottsdale
State/Province
Arizona
ZIP/Postal Code
85258
Country
United States
City
Sedona
State/Province
Arizona
ZIP/Postal Code
86336
Country
United States
City
Tucson
State/Province
Arizona
ZIP/Postal Code
85710
Country
United States
City
Oxnard
State/Province
California
ZIP/Postal Code
93030
Country
United States
City
San Diego
State/Province
California
ZIP/Postal Code
92108
Country
United States
City
Aurora
State/Province
Colorado
ZIP/Postal Code
80012
Country
United States
City
Aurora
State/Province
Colorado
ZIP/Postal Code
80045
Country
United States
City
Athens
State/Province
Georgia
ZIP/Postal Code
30607
Country
United States
City
Atlanta
State/Province
Georgia
ZIP/Postal Code
30318
Country
United States
City
Peoria
State/Province
Illinois
ZIP/Postal Code
61615
Country
United States
City
Wichita
State/Province
Kansas
ZIP/Postal Code
67214
Country
United States
City
Las Vegas
State/Province
Nevada
ZIP/Postal Code
89148
Country
United States
City
Raleigh
State/Province
North Carolina
ZIP/Postal Code
27607
Country
United States
City
Tualatin
State/Province
Oregon
ZIP/Postal Code
97062
Country
United States
City
Charleston
State/Province
South Carolina
ZIP/Postal Code
29414
Country
United States
City
Greenville
State/Province
South Carolina
ZIP/Postal Code
29605
Country
United States
City
Myrtle Beach
State/Province
South Carolina
ZIP/Postal Code
29572
Country
United States
City
Dallas
State/Province
Texas
ZIP/Postal Code
75246
Country
United States
City
Houston
State/Province
Texas
ZIP/Postal Code
77024
Country
United States
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84112
Country
United States
12. IPD Sharing Statement
Learn more about this trial
Study of Cabozantinib in Combination With Abiraterone in Chemotherapy-Naïve Subjects With Bone-Metastatic Castration-Resistant Prostate Cancer
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