About this trial
This is a randomized, Phase 3, double-blind, placebo-controlled study of pazopanib plus abexinostat versus pazopanib plus placebo in patients with locally advanced unresectable or metastatic renal cell carcinoma (RCC).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients aged ≥ 18 years at time of study entry.
Patients have histologically confirmed RCC with clear cell component.
Patients have locally advanced and unresectable or metastatic disease.
Measurable disease as assessed only by the investigator (not verified by IRC) according to RECIST version 1.1.
Disqualifiers
Has persistent clinically significant toxicities (Grade ≥ 2; per NCI CTCAE version 5 from previous anticancer therapy (excluding alopecia which is permitted and excluding Grades 2 and 3 laboratory abnormalities if they are not associated with symptoms, are not considered clinically significant by the investigator, and can be managed with available medical therapies).
Has untreated central nervous system (CNS) metastases. Patients with treated CNS metastases are eligible provided imaging demonstrates no new or progressive metastases obtained at least 4 weeks following completion of treatment. CNS imaging during Screening is not required unless clinically indicated.
Has an additional malignancy requiring treatment within the past 3 years. Patients with the following concomitant neoplastic diagnoses are eligible: non-melanoma skin cancer, carcinoma in situ, and non-muscle invasive urothelial carcinoma.
Poorly controlled hypertension, defined as systolic blood pressure ≥ 160 or diastolic blood pressure ≥ 100 mmHg. Use of anti-hypertensives and rescreening is permitted.
Trial design
Crossover
Treatments tested in this trial
Pazopanib
DrugAll patients will receive pazopanib at a starting dose of 800 mg by mouth (p.o.) daily on Days 1 to 28 of each treatment cycle. Patients should be instructed to take their once- daily oral dose of pazopanib at the same time each morning. Each dose of pazopanib should be taken with an 8 oz/240 mL glass of water either 1 hour before or 2 hours after a meal. Patients should be instructed to swallow the tablets whole and not chew them.
Abexinostat
DrugThe starting dose and schedule of abexinostat will be 80 mg p.o. BID on Days 1 to 4, 8 to 11, and 15 to 18 of every 28-day cycle, 2 doses 4 hours apart. Each dose of abexinostat should be taken with an 8 oz/240 mL glass of water at least half an hour before meals or more than 2 hours after a meal and must be 4 hours apart. Patients should be instructed to swallow the tablets whole and not chew them.
Placebo
Other interventionThe starting dose and schedule of abexinostat matching placebo will be 80 mg p.o. BID on Days 1 to 4, 8 to 11, and 15 to 18 of every 28-day cycle, 2 doses 4 hours apart. Each dose of placebo should be taken with an 8 oz/240 mL glass of water at least half an hour before meals or more than 2 hours after a meal and must be 4 hours apart. Patients should be instructed to swallow the tablets whole and not chew them.
Treatment groups
Trial outcomes
Primary outcomes
Progression-free survival (PFS)
To compare the PFS between treatment arms. PFS is defined as the time (month) interval between date of randomization and date of radiographic disease progression or death for those without prior evidence of progression, as assessed by blinded Independent Review Committee (IRC) according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.
Secondary outcomes
PFS by investigator assessment according to RECIST version 1.1.
To compare the PFS between treatment arms by investigator assessment. PFS is defined as the time (month) interval between date of randomization and date of radiographic disease progression or death for those without prior evidence of progression, as assessed by IRC according to RECIST version 1.1.
Overall survival (OS)
OS is defined as the interval between date of randomization and date of death. The main objective was to compare the OS between treatment arms by investigator assessment.
Adverse events by National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5
To characterize the safety profile of pazopanib in combination with abexinostat.
Objective response rate (ORR)
ORR is defined as the proportion of patients with objective evidence of CR or PR by RECIST version 1.1. The main objective was to compare the ORR between treatment arms by investigator assessment.
Sponsors and contacts
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