Skip to content

Cabazitaxel With or Without Carboplatin in Treating Patients With Previously Treated Metastatic Castration-Resistant Prostate Cancer

An Open Label Phase I/II Study of Cabazitaxel With or Without Carboplatin in Patients With Metastatic Castration-Resistant Prostate Cancer

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01505868
Enrollment
170
Registered
2012-01-09
Start date
2012-07-11
Completion date
2019-12-09
Last updated
2021-07-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Castration Levels of Testosterone, Castration-Resistant Prostate Carcinoma, Lymphadenopathy, Metastatic Prostate Carcinoma, Prostate Adenocarcinoma, Prostate Carcinoma Metastatic in the Bone, Prostate Small Cell Carcinoma

Brief summary

This partially randomized phase I/II trial studies cabazitaxel with or without carboplatin in treating patients with previously treated prostate cancer that has spread to other areas of the body and does not respond to treatment with hormones. Drugs used in chemotherapy, such as cabazitaxel and carboplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. It is not yet known whether giving cabazitaxel alone or with carboplatin is more effective in treating prostate cancer.

Detailed description

PRIMARY OBJECTIVES: I. To determine the maximum tolerated dosage (MTD) of cabazitaxel-carboplatin in the phase I portion of the study. II. To evaluate progression free survival achieved with cabazitaxel-carboplatin versus cabazitaxel alone in men with metastatic castration resistant prostate cancer (mCRPC) in the phase II portion of the study. SECONDARY OBJECTIVES: I. To assess prostate-specific antigen (PSA) response rate (percentage of patients with \> 50 % decline). II. To correlate changes in bone specific alkaline phosphatase and urine n-telopeptides with response. III. To evaluate overall survival. IV. To evaluate safety and toxicity. V. To evaluate influence of the anaplastic phenotype on response to therapy. VI. To collect and archive serum, plasma, and urine samples in study patients for later hypothesis generating associations. OUTLINE: This is a phase I, dose-escalation study followed by a randomized phase II study. PHASE I: Patients receive cabazitaxel intravenously (IV) over 60-90 minutes and carboplatin IV over 60-90 minutes on day 1. Treatment repeats every 21 days for up to 10 courses in the absence of disease progression or unacceptable toxicity. PHASE II: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive cabazitaxel IV over 60-90 minutes on day 1. Treatment repeats every 21 days for up to 10 courses in the absence of disease progression or unacceptable toxicity. ARM II: Patients receive cabazitaxel IV over 60-90 minutes and carboplatin IV over 60-90 minutes on day 1. Treatment repeats every 21 days for up to 10 courses in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 6 months.

Interventions

DRUGCabazitaxel

Given IV

DRUGCarboplatin

Given IV

OTHERLaboratory Biomarker Analysis

Correlative studies

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologic evidence of prostate adenocarcinoma * In addition to patients with adenocarcinoma, patients with anaplastic features are also eligible as defined by at least one of the following: a) histologic evidence of small cell prostate cancer (patients with small cell carcinoma on histology are not required to demonstrate castration-resistant progression); b) any of the following metastatic presentations: (i) exclusive visceral metastases; (ii) radiographically predominant lytic bone metastases identified by plain X-ray or computed tomography (CT) scan; (iii) bulky (\>= 5 cm in longest dimension) lymphadenopathy (iv) bulky (\>= 5 cm) tumor mass in the prostate/pelvis (v) low PSA (=\< 10 ng/ml) at initial presentation (prior to androgen ablation or at symptomatic progression in the castrate-setting) plus high volume (\>= 20) bone metastases; (vi) elevated serum lactate dehydrogenase (LDH) (\>= 2 x ULN) or elevated serum carcinoembryonic antigen (CEA) (\>= 2 x upper limit of normal \[ULN\]) in the absence of other etiologies; (vii) short interval (=\< 180 days) to castrate-resistant progression following initiation of hormonal therapy * Castration-resistant prostate cancer; patients must have surgical or ongoing chemical castration (with luteinizing-hormone-releasing hormone \[LHRH\] agonists or LHRH antagonists), with a baseline testosterone level \< 50 ng/dL * Metastatic disease; patients must have evidence for metastatic prostate cancer by bone scan and/or CT/magnetic resonance imaging (MRI) (i.e., soft tissue, visceral, lymph node); if lymph node, visceral and/or soft-tissue metastases are the only evidence of metastasis, at least one lesion must be \>= 1.5 cm in diameter * Patients may have received prior treatment with androgen ablative therapies (such as bicalutamide, ketoconazole, diethylstilbestrol \[DES\], abiraterone, Xtandi, ARN-509) and/or targeted therapies (such as tyrosine kinase inhibitors); androgen ablative therapies must be discontinued \>= 3 days prior to initiation of study treatment with the exception of abiraterone and/or enzalutamide, which may be continued during study treatment per the practice preference of the treating physician; patients who are predicted to benefit from an antiandrogen withdrawal response should be tested for this possibility before being considered for eligibility to this study; targeted therapies must be discontinued \>= 2 weeks before initiation of study treatment * Both chemotherapy-naive and patients previously treated with chemotherapy are eligible; chemotherapy pretreated patients may have received a maximum of two prior systemic cytotoxic chemotherapies completed at least 3 weeks prior to initiation of study treatment * Patients must have documented evidence of progressive disease as defined by any of the following: a) PSA progression: minimum of 2 rising values (3 measurements) obtained a minimum of 7 days apart with the last result being at least \>= 2.0 ng/mL; b) new or increasing non-bone disease (by Response Evaluation Criteria In Solid Tumors \[RECIST\]); c) positive bone scan with 2 or more new lesions (Prostate Cancer Working Group \[PCWG2\]) * For purposes of stratification, patients will be categorized as responders or non-responders based on their response to prior docetaxel-based therapy; a) responders will have demonstrated objective responses to first-line docetaxel as determined by any of the following: 1. decrease in PSA level \>= 50% from baseline, maintained for \>= 6 weeks; 2. partial or complete response in lymph nodes and soft tissue metastases by RECIST; responders must have received \>= 225 mg/m\^2 (\ 3 cycles) of docetaxel; b) patients not meeting response criteria above will be considered as non-responders; we anticipate 2 general categories of non-responders based on the following disease phenotypes: 1. progressive disease on therapy without any objective evidence of response (primary-resistant disease); progressive disease on therapy with prior objective evidence of response, but response duration is =\< 6 weeks (docetaxel refractory disease); non-responders are eligible even if they have received \< 225 mg/m\^2 of docetaxel * If present, peripheral neuropathy must be =\< grade 2 * Absolute neutrophil count (ANC) \>= 1,500/ml (unless due to bone marrow infiltration by tumor in which case ANC \>= 500/ml are allowed) (within 14 days before registration) * Platelets \>= 100,000/ml (unless due to bone marrow infiltration by tumor in which case \>= 50,000/ml are allowed) (within 14 days before registration) * Total bilirubin =\< upper limit of normal with the exception of isolated hyperbilirubinemia due to Gilbert's syndrome or if the patient has liver metastases and/or acute tumor-associated illness =\< 4 x ULN (within 14 days before registration) * Serum glutamic-pyruvic transaminase (SGPT), (alanine aminotransferase \[ALT\]) AND/OR serum glutamic oxaloacetic transaminase (SGOT) (aspartate aminotransferase \[AST\]) =\< 1.5 x the ULN or if patient has liver metastases and/or acute tumor-associated illness, =\< 4 x ULN (within 14 days before registration) * Patient has creatinine clearance \>= 30 ml/min using the Cockcroft-Gault equation (within 14 days before registration) * Men whose partner is a woman of childbearing potential must be willing to consent to using effective contraception while on treatment and for at least 3 months thereafter * Patient or his legally authorized representative must provide written informed consent * Eastern Cooperative Oncology Group (ECOG) performance status =\< 2

Exclusion criteria

* Radiation therapy (including palliative radiotherapy to a metastatic lesion) within 14 days or major surgery (e.g., open abdominal, pelvic, thoracic, orthopedic or neurosurgery) within 28 days of the date of the first dose * Samarium-153 within 28 days of registration, or strontium-89 within 12 weeks (84 days) of registration; patients who have received 2 or more doses of bone-seeking radioisotopes are not eligible * Current treatment on another therapeutic clinical trial * Prior treatment with cabazitaxel and/or carboplatin * Impending complication from bone metastases (fracture and/or cord compression); properly treated or stabilized fractures and/or cord compression is allowed * Presence of ongoing urinary obstruction (e.g., urinary retention, hydronephrosis) requiring medical intervention; properly treated urinary obstruction is allowed * Patient has an uncontrolled intercurrent illness (e.g., uncontrolled diabetes, uncontrolled hypertension) * Patient has another serious medical or psychiatric illness that could, in the investigator's opinion, potentially interfere with the patient's ability to provide informed consent or with the completion of treatment according to this protocol * Patients with a history of severe hypersensitivity reaction to JEVTANA® (cabazitaxel) or other drugs formulated with polysorbate 80 * Patients with an active second malignancy that could, in the investigator's opinion, potentially interfere with the patient's ability to participate and/or complete this trial

Design outcomes

Primary

MeasureTime frameDescription
Maximum Tolerated Dosage (MTD) of Cabazitaxel-carboplatin in the Phase I Portion of Study6 monthsThe MTD was defined as the highest dose cohort studied in which one of six or fewer patients experienced a dose-limiting toxicity.
Progression Free Survival (PFS) of Cabazitaxel-carboplatin Versus Cabazitaxel in the Phase II Portion of StudyFrom the first dose until progression of disease or death, whichever comes first, up to 5 yearsPFS is the time from the first dose until progression of disease or death, whichever comes first. PFS times will be estimated using the Kaplan-Meier method.

Secondary

MeasureTime frameDescription
Urine N-Telopeptides Response5 yearsPercentage of participants with a greater than 50% decrease in measurable values of urine n-telopeptides during treatment from their baseline values.
Prostate Specific Antigen (PSA) Response Rate5 yearsPercentage of participants with a greater than 50% decrease in measurable values of PSA during treatment from their baseline PSA.
Phase II Most Common Grade 3-5 Adverse EventsTime from date of treatment start until date of death due to any cause or last follow up, up to 5 yearsGrade 3: Serious reaction which requires medical treatment Grade 4: Life threatening. Grade 5 Death.
Overall Survival (OS)Time from date of treatment start until date of death due to any cause or last follow up, up to 5 yearsTime from date of treatment start until date of death due to any cause or last follow up.
Bone-Specific Alkaline Phosphatase Response5 yearsPercentage of participants with a greater than 50% decrease in measurable values of bone-specific alkaline phosphatase during treatment from their baseline values

Countries

United States

Participant flow

Recruitment details

Participants were treated at MD Anderson Cancer Center in Houston, TX and Karmanos Cancer institute in Detroit, MI

Pre-assignment details

170 participants enrolled, 10 were phase I participants, 1 participant withdrew in phase I

Participants by arm

ArmCount
Phase I Cabazitaxel + Carboplatin Dose Zero
Intravenous cabazitaxel 20 mg/m2 and carboplatin AUC 3 every 21 days up to 10 doses
3
Phase I Cabazitaxel + Carboplatin Dose One
Intravenous cabazitaxel 20 mg/m2 and carboplatin AUC 4 every 21 days up to 10 doses
3
Phase I Cabazitaxel + Carboplatin Dose Two
Intravenous cabazitaxel 25 mg/m2 and carboplatin AUC 4 every 21 days up to 10 doses
3
Phase II Cabazitaxel
Intravenous cabazitaxel 25 mg/m2 every 21 days up to 10 doses
79
Phase II Cabazitaxel + Carboplatin
Intravenous cabazitaxel 25 mg/m2 and carboplatin AUC 4 every 21 days up to 10 doses
81
Total169

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Overall StudyWithdrawal by Subject10000

Baseline characteristics

CharacteristicPhase I Cabazitaxel + Carboplatin Dose OnePhase I Cabazitaxel + Carboplatin Dose TwoPhase II CabazitaxelPhase II Cabazitaxel + CarboplatinTotalPhase I Cabazitaxel + Carboplatin Dose Zero
Age, Continuous74 years69 years66 years68 years67 years66 years
Bone metastases
No
0 Participants0 Participants7 Participants6 Participants13 Participants0 Participants
Bone metastases
Yes
3 Participants3 Participants72 Participants75 Participants156 Participants3 Participants
Eastern Cooperative Oncology Group (ECOG) performance status
Grade 0
1 Participants1 Participants21 Participants22 Participants46 Participants1 Participants
Eastern Cooperative Oncology Group (ECOG) performance status
Grade 1 and 2
2 Participants2 Participants58 Participants59 Participants123 Participants2 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants4 Participants8 Participants13 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants0 Participants12 Participants18 Participants30 Participants0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants3 Participants63 Participants55 Participants126 Participants2 Participants
Prostate-specific antigen (PSA)89.5 µg/L217.6 µg/L23.7 µg/L33.8 µg/L28.75 µg/L380.4 µg/L
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants16 Participants8 Participants24 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants6 Participants9 Participants15 Participants0 Participants
Race (NIH/OMB)
White
3 Participants3 Participants57 Participants64 Participants130 Participants3 Participants
Region of Enrollment
United States
3 participants3 participants79 participants81 participants169 participants3 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
3 Participants3 Participants79 Participants81 Participants169 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
3 / 33 / 33 / 363 / 7969 / 81
other
Total, other adverse events
3 / 33 / 33 / 378 / 7981 / 81
serious
Total, serious adverse events
0 / 30 / 30 / 33 / 794 / 81

Outcome results

Primary

Maximum Tolerated Dosage (MTD) of Cabazitaxel-carboplatin in the Phase I Portion of Study

The MTD was defined as the highest dose cohort studied in which one of six or fewer patients experienced a dose-limiting toxicity.

Time frame: 6 months

ArmMeasureValue (NUMBER)
Phase I Cabazitaxel + CarboplatinMaximum Tolerated Dosage (MTD) of Cabazitaxel-carboplatin in the Phase I Portion of Study25 mg/m^2
Primary

Progression Free Survival (PFS) of Cabazitaxel-carboplatin Versus Cabazitaxel in the Phase II Portion of Study

PFS is the time from the first dose until progression of disease or death, whichever comes first. PFS times will be estimated using the Kaplan-Meier method.

Time frame: From the first dose until progression of disease or death, whichever comes first, up to 5 years

ArmMeasureValue (MEDIAN)
Phase I Cabazitaxel + CarboplatinProgression Free Survival (PFS) of Cabazitaxel-carboplatin Versus Cabazitaxel in the Phase II Portion of Study4.5 months
Phase II Cabazitaxel + CarboplatinProgression Free Survival (PFS) of Cabazitaxel-carboplatin Versus Cabazitaxel in the Phase II Portion of Study7.3 months
Secondary

Bone-Specific Alkaline Phosphatase Response

Percentage of participants with a greater than 50% decrease in measurable values of bone-specific alkaline phosphatase during treatment from their baseline values

Time frame: 5 years

ArmMeasureValue (NUMBER)
Phase I Cabazitaxel + CarboplatinBone-Specific Alkaline Phosphatase Response29.4 percentage of participants
Phase II Cabazitaxel + CarboplatinBone-Specific Alkaline Phosphatase Response62 percentage of participants
Secondary

Overall Survival (OS)

Time from date of treatment start until date of death due to any cause or last follow up.

Time frame: Time from date of treatment start until date of death due to any cause or last follow up, up to 5 years

ArmMeasureValue (MEDIAN)
Phase I Cabazitaxel + CarboplatinOverall Survival (OS)17.3 months
Phase II Cabazitaxel + CarboplatinOverall Survival (OS)18.5 months
Secondary

Phase II Most Common Grade 3-5 Adverse Events

Grade 3: Serious reaction which requires medical treatment Grade 4: Life threatening. Grade 5 Death.

Time frame: Time from date of treatment start until date of death due to any cause or last follow up, up to 5 years

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Phase I Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsFatique9 Participants
Phase I Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsAnemia4 Participants
Phase I Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsNeutropenia4 Participants
Phase I Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsThrombocytopenia1 Participants
Phase II Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsThrombocytopenia14 Participants
Phase II Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsFatique20 Participants
Phase II Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsNeutropenia16 Participants
Phase II Cabazitaxel + CarboplatinPhase II Most Common Grade 3-5 Adverse EventsAnemia23 Participants
Secondary

Prostate Specific Antigen (PSA) Response Rate

Percentage of participants with a greater than 50% decrease in measurable values of PSA during treatment from their baseline PSA.

Time frame: 5 years

ArmMeasureValue (NUMBER)
Phase I Cabazitaxel + CarboplatinProstate Specific Antigen (PSA) Response Rate40.9 percentage of participants
Phase II Cabazitaxel + CarboplatinProstate Specific Antigen (PSA) Response Rate61.7 percentage of participants
Secondary

Urine N-Telopeptides Response

Percentage of participants with a greater than 50% decrease in measurable values of urine n-telopeptides during treatment from their baseline values.

Time frame: 5 years

ArmMeasureValue (NUMBER)
Phase I Cabazitaxel + CarboplatinUrine N-Telopeptides Response55 percentage of participants
Phase II Cabazitaxel + CarboplatinUrine N-Telopeptides Response62.5 percentage of participants
Post Hoc

Aggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to Response

PFS and OS were reported for participants with and without AVPC-MS in the cabazitaxel vs cabazitaxel + carboplatin treatment groups

Time frame: 5 years

ArmMeasureGroupValue (MEDIAN)
Phase I Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel PFS1.7 months
Phase I Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel + carboplatin PFS7.5 months
Phase I Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel OS8.5 months
Phase I Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel + carboplatin OS20.2 months
Phase II Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel + carboplatin OS21.5 months
Phase II Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel PFS6.3 months
Phase II Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel OS21.7 months
Phase II Cabazitaxel + CarboplatinAggressive Variant Prostate Carcinoma-Metastatic (ACPC-MS) Phenotypes Correlated to ResponseCabazitaxel + carboplatin PFS6.5 months

Source: ClinicalTrials.gov · Data processed: Mar 8, 2026