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The goal of this clinical study is to determine the safety, tolerability, pharmacokinetics and activity of once-daily (QD) oral dosing of VT-464, a lyase-selective inhibitor of CYP17, in patients with castration-resistant prostate cancer (CRPC).
This is a Phase 1/2 study of VT-464 in chemotherapy-naïve CRPC patients who are treatment-naive or who have failed prior therapy with abiraterone and/or enzalutamide. The study will examine several parallel QD dosing regimens of VT-464 using a traditional modified "3+3" Fibonacci study design. Approximately 3 dose-levels of VT-464 will be examined in each dosing regimen that is fully enrolled.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Regimen 1: 7dayPM+DT | Experimental | VT-464: given orally once daily in 28 day cycles. Dosing in the evening before bed 7-days a week with a 2-week dose titration. |
|
| Regimen 2: 7dayPM-DT | Experimental | VT-464: given orally once daily in 28 day cycles. Dosing in the evening before bed 7-days a week without dose titration. |
|
| Regimen 3: 7dayAM+DT | Experimental | VT-464: given orally once daily in 28 day cycles. Dosing in the morning 7-days a week with a 2-week dose titration. |
|
| Regimen 4: 7dayAM-DT | Experimental | VT-464: given orally once daily in 28 day cycles.Dosing in the morning 7-days a week without dose titration. |
|
| Regimen 5: 5dayPM-DT | Experimental | VT-464: given orally once daily in 28 day cycles.Dosing in the evening before bed 5-days a week without dose titration. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| VT-464: given orally once daily in 28 day cycles | Drug | VT-464: given orally once daily in 28 day cycles either 5 days or 7 days a week. |
|
| Measure | Description | Time Frame |
|---|---|---|
| The safety and tolerability of VT-464 by evaluating adverse events, vital signs, physical examination findings, concomitant medications and laboratory tests. | The first 28-day continuous dosing cycle at target dose. |
| Measure | Description | Time Frame |
|---|---|---|
| Peak Plasma Concentration (Cmax) of VT-464 | After the first dose of VT-464 | |
| Area under the plasma concentration versus time curve (AUC) of VT-464 | After the first dose of VT-464 | |
| Measure | Description | Time Frame |
|---|---|---|
| The change in PSA from baseline using waterfall plots in response to VT-464 | At least monthly over the first 8 28-day dosing cycles | |
| Objective tumor response to VT-464 at the end of even-numbered cycles using RECIST 1.1 criteria | At least every other month over the first 8 28-day dosing cycles |
Key Inclusion Criteria:
Key Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Joel Eisner | Innocrin Pharmaceutical | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| H. Lee Moffitt Cancer Center and Research Institute | Tampa | Florida | 33612 | United States | ||
| Urology Cancer Center |
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| Regimen 6: 5dayAM-DT | Experimental | VT-464: given orally once daily in 28 day cycles.Dosing in the morning 5-days a week without dose titration. |
|
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| Time to maximum plasma concentration (Tmax) of VT-464 |
| After the first dose of VT-464 |
| The absolute and percent change from baseline in adrenal, pituitary, and testicular hormone concentrations in response to VT-464 | At least monthly over the first 8 28-day dosing cycles |
| Omaha |
| Nebraska |
| 68130 |
| United States |
| Duke University Medical Center | Durham | North Carolina | 27710 | United States |
| Carolina Urologic Research Center | Myrtle Beach | South Carolina | 29572 | United States |
| Virginia Oncology Associates | Norfolk | Virginia | 23502 | United States |
| ID | Term |
|---|---|
| C000601472 | VT-464 |
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