ESK981 and Nivolumab for the Treatment of Metastatic Castration Resistant Prostate Cancer

Phase II Multi-Center Trial of ESK981 in Combination With Nivolumab in Patients With Metastatic Castrate Resistant Prostate Cancer

Status

Terminated

Phases

Phase 2

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04159896

Enrollment

Registered

2019-11-12

Start date

2019-11-13

Completion date

2022-03-01

Last updated

2024-07-16

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, Metastatic Prostate Carcinoma, Prostate Carcinoma Metastatic in the Bone, Stage IVB Prostate Cancer AJCC v8

Brief summary

This phase II trial studies the side effects of ESK981 and nivolumab and to see how well they work for the treatment of castration resistant prostate cancer that has spread to other places in the body (metastatic). ESK981 is an investigational drug that targets several important pathways that are believed to play a role in the spread of cancer. Immunotherapy with monoclonal antibodies, such as nivolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. This study is being done to see if giving ESK981 and nivolumab together works better in treating metastatic castration resistant prostate cancer compared to usual treatments.

Detailed description

PRIMARY OBJECTIVES: I. To determine the prostate specific antigen (PSA) \>= 50% response rate (PSA50) from baseline using the Prostate Cancer Clinical Trials Working Group 3 (PCWG3) criteria to pan-VEGFR/TIE2 tyrosine kinase inhibitor CEP-11981 (ESK981) plus nivolumab in men with metastatic castration resistant prostate cancer (mCRPC) who have progressed on enzalutamide (an oral androgen-receptor inhibitor) and/or abiraterone acetate (an androgen synthesis inhibitor) and chemotherapy (docetaxel and/or cabazitaxel). II. To assess the safety and tolerability of ESK981 plus nivolumab. SECONDARY OBJECTIVES: I. To determine the time to PSA response (TTPR) in patients with mCRPC. II. To determine the duration of PSA response (PRD) in patients with mCRPC. III. To determine PSA progression rates as defined by the PCWG3 criteria. IV. To determine PSA progression free survival (PPFS) as defined by the PCWG3 criteria. CORRELATIVE/EXPLORATORY/TERTIARY OBJECTIVE: I. To assess exploratory biomarkers from blood and tumor biopsies. OUTLINE: Patients receive ESK981 orally (PO) once daily (QD) for 5 consecutive days per week, followed by a 2-day break. Patients also receive nivolumab intravenously (IV) on day 1 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3 months for 5 years.

Interventions

DRUGPan-VEGFR/TIE2 Tyrosine Kinase Inhibitor CEP-11981

Given PO

BIOLOGICALNivolumab

Given IV

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

MALE

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Eastern Cooperative Group (ECOG) performance status =\< 1 * Recovery to baseline or =\< grade 1 Common Terminology Criteria for Adverse Events (CTCAE) version (v.)5 from toxicities related to any prior treatments, unless adverse event (AE)(s) are clinically non-significant and/or stable on supportive therapy * Absolute neutrophil count (ANC) \>= 1.5 K/mm\^3 * Hemoglobin (Hgb) \>= 9 g/dL * Platelets (Plt) \>= 100,000/mm\^3 * Serum creatinine =\< 1.5 times the upper limit of normal OR creatinine clearance \> 30 mL/min by Cockcroft-Gault formula * Total bilirubin =\< 1.5 x upper limit of normal (ULN) * Aspartate aminotransferase (AST) =\< 2.5 x ULN (=\< 5 x ULN with known hepatic metastases) * Alanine aminotransferase (ALT) =\< 2.5 x ULN (=\< 5 x ULN with known hepatic metastases) * Prothrombin time (PT) and activated partial thromboplastin time (aPTT) levels =\< 1.5 x ULN (If patient is receiving anticoagulation that is expected to alter these levels, should be in targeted therapeutic range for that agent) * Patient must have progressive disease while receiving androgen deprivation therapy (ADT) defined by any one of the following as per the PCWG3 criteria for PSA, measurable or non-measurable (bone) disease and must have a castrate serum testosterone level (i.e. =\< 50 ng/dL) at screening: * PSA: At least two consecutive rises in serum PSA, obtained at a minimum of 1-week intervals, with the final value \>= 2.0 ng/mL * Measurable disease (by Response Evaluation Criteria in Solid Tumors \[RECIST\] 1.1): \>= 20% increase (with an absolute increase of at least 5 mm) in the sum of diameters of all measurable lesions or the development of one or more new lesions. The short axis of a target lymph node must be more than 15 mm to be assessed for change in size * Non-measurable (bone) disease: The appearance of two or more new areas of uptake on bone scan consistent with metastatic disease compared to previous imaging during castration therapy. The increased uptake of pre-existing lesions on bone scan will not be taken to constitute progression, and ambiguous results must be confirmed by other imaging modalities (e.g. X-ray, computed tomography \[CT\] or magnetic resonance imaging \[MRI\]) * Metastatic prostate cancer (M1) as documented by appropriate medical imaging (i.e. CT-Scan, positron emission tomography \[PET\] scan or bone scan) * Progression on a hormonal agent (abiraterone/enzalutamide) and on a chemotherapy agent (docetaxel and/or cabazitaxel) in the metastatic castration resistant setting as per PCWG3 criteria * Progression on chemotherapy (e.g. docetaxel, cabazitaxel) in the metastatic castration resistant setting. Progression of disease within 6 months of completing docetaxel in the metastatic castrate-sensitive setting is acceptable * Have signed an informed consent document indicating that the subject understands the purpose of and procedures required for the study and are willing to participate in the study * Be willing and able to adhere to the prohibitions and restrictions specified in this protocol * Willingness to use contraception by a method that is deemed effective by the investigator throughout the treatment period and for at least 30 days following the last dose of therapy * Willingness and ability to comply with study procedures and follow-up examination * Able to swallow and retain oral medication * Willingness and ability to undergo mandatory tumor biopsy at baseline and at the cycle 3 visit * Willingness and ability to undergo mandatory whole blood sample collections at baseline, weeks 2-4 in the first cycle, and then monthly

Exclusion criteria

* Systemic therapy (other than a gonadotrophin releasing hormone \[GnRH\] agonist/antagonist) for CRPC within the past two weeks from cycle 1/day 1 including: * CYP-17 inhibitors (e.g. ketoconazole, abiraterone) * Antiandrogens (e.g. bicalutamide, nilutamide) * Second generation antiandrogens (e.g. enzalutamide, ARN-509, galeterone) * Immunotherapy (e.g. sipuleucel-T, ipilimumab) * Chemotherapy (e.g. docetaxel, cabazitaxel) * Prior radiopharmaceutical therapy (e.g. radium-223, strontium-89, samarium-153, etc.) within the past year * Have any condition that, in the opinion of the investigator, would compromise the well-being of the subject or the study or prevent the subject from meeting or performing study requirements * The patient is currently on warfarin or heparin therapy * The patient has any pre-existing coagulopathy, recent hemoptysis, gross hematuria or gastrointestinal bleeding * The patient has a history of a clinically significant cardiovascular or cerebrovascular event within 3 months prior to study entry * The patient has uncontrolled hypertension defined as a blood pressure measurement greater than 150 mm Hg systolic or 90 mm Hg diastolic with medication * The patient has previously been enrolled in the study or received ESK981 * The patient has known hypersensitivity to gelatin or lactose monohydrate * The patient has taken a medication known to be a potent inducer of CYP1A2, CYP2C8, or CYP3A4 within 4 weeks prior to the first dose of study drug * Prior treatment with anti-PD/PD-L1/CTLA4/IDO antibody * Untreated brain metastases or spinal cord compression * Major surgical procedure or significant traumatic injury within 6 weeks prior to study registration. (\> 6 weeks prior to registration is permitted as long as they have fully recovered from any such procedure) * History of another primary malignancy except for: malignancy treated with curative intent and no known active disease for \>= 5 years, adequately treated non-melanoma skin cancer without evidence of disease, adequately treated carcinoma in situ without evidence of disease * Angina, myocardial infarction symptomatic congestive heart failure, cerebrovascular accident, transient ischemic attack, arterial embolism, pulmonary embolism, percutaneous angioplasty or Coronary arterial bypass surgery within the past 3 months * The patient has received any investigational drug within 28 days prior to registration or 5 half-lives of the investigational drug, whichever is sooner

Design outcomes

Primary

Measure	Time frame	Description
Prostate Specific Antigen (PSA) >= 50% Response Rate (PSA50)	From treatment administration up to a maximum duration of 27 months	Will assess PSA decline of \>= 50% from baseline (PSA50), using the Prostate Cancer Working Group 3 (PCWG3) criteria. Two-sided Wilson type 95% confidence interval (CI) estimates will be calculated.

Secondary

Measure	Time frame	Description
Time to PSA Response (TTPR)	From treatment administration up to a maximum duration of 27 months	Descriptive statistics of TTPR will be used to summarize the time to PSA response. These descriptives will include N, median, mean, standard deviation (SD), interquartile range (IQR), minimum, and maximum.
Duration of PSA Response (PRD)	From treatment administration up to a maximum duration of 27 months	The censored distributions will be summarized with the Kaplan-Meier (K-M) survivorship estimate. A graph of the K-M curve will be generated along with the Hall-Wellner 90% confidence band, and a display of the number of patients at risk at several time points, below the X-axis. Summary statistics (6-month rate, 12-month rate, median, etc.) will be calculated from the K-M life table, each one with its respective 80% CI.
Overall Survival (OS)	From treatment administration up to a maximum duration of 27 months	Time from start of treatment to death due to any cause.

Other

Measure	Time frame	Description
Circulating and Disseminated Tumor Cells as Pharmacodynamic Biomarkers of ESK981 Response	From treatment administration up to a maximum duration of 27 months	Will assess the correlation of circulating and disseminated tumor cells as a predictor for exceptional response to ESK981 .
Somatic and Germline Mutations	From treatment administration up to a maximum duration of 27 months	Will assess the proportion of patients with TP53 mutations, AR amplifications, and ETS-fusions, mutations in the PTENPI3K-AKT pathway as well as germline and somatic events in the DNA repair pathway with exceptional response/resistance to pan-VEGFR/TIE2 tyrosine kinase inhibitor CEP-11981 (ESK981).
Pathological Assessment of Phenotypic Tumor and Host Responses to ESK981 Treatment	From treatment administration up to a maximum duration of 27 months	Will assess the correlation of IHC % staining as a predictor for exceptional response to ESK981 .
ETS/Kinase Gene Fusions	From treatment administration up to a maximum duration of 27 months	Will assess the proportion of patients with ETS/kinase gene fusions with exceptional response/resistance to ESK981.
Androgen Receptor (AR) Signaling	From treatment administration up to a maximum duration of 27 months	Will assess the correlation of AR signaling as a predictor of exceptional response to ESK981.
Metastatic Kinome Activity Profiles as Predictive Biomarkers for Response to ESK981	From treatment administration up to a maximum duration of 27 months	Will assess the correlation of Metastatic kinome activity profiles as a predictor for exceptional response to ESK981

Countries

United States

Participant flow

Pre-assignment details

This is a single arm study with run-in phase. All participants, including the run-in phase, received same dose level, so the safety or efficacy will be analyzed in the total n=10 participants as a single group.

Participants by arm

Arm	Count
Treatment (ESK981, Nivolumab) Patients receive ESK981 PO QD for 5 consecutive days per week, followed by a 2-day break. Patients also receive nivolumab IV on day 1 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Pan-VEGFR/TIE2 Tyrosine Kinase Inhibitor CEP-11981: Given PO Nivolumab: Given IV	10
Total	10

Withdrawals & dropouts

Period	Reason	FG000
Overall Study	Adverse Event	1
Overall Study	A transient ischaemic attack	1
Overall Study	Lack of Efficacy	7
Overall Study	Withdrawal by Subject	1

Baseline characteristics

Characteristic	Treatment (ESK981, Nivolumab)
Age, Categorical <=18 years	0 Participants
Age, Categorical >=65 years	8 Participants
Age, Categorical Between 18 and 65 years	2 Participants
Age, Continuous	72.5 years
Baseline PSA	153.3 ng/mL
Race (NIH/OMB) American Indian or Alaska Native	0 Participants
Race (NIH/OMB) Asian	0 Participants
Race (NIH/OMB) Black or African American	5 Participants
Race (NIH/OMB) More than one race	0 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	0 Participants
Race (NIH/OMB) Unknown or Not Reported	0 Participants
Race (NIH/OMB) White	5 Participants
Region of Enrollment United States	10 participants
Sex: Female, Male Female	0 Participants
Sex: Female, Male Male	10 Participants

Adverse events

Event type	EG000 affected / at risk
deaths Total, all-cause mortality	9 / 10
other Total, other adverse events	10 / 10
serious Total, serious adverse events	3 / 10

Outcome results

Primary

Prostate Specific Antigen (PSA) >= 50% Response Rate (PSA50)

Will assess PSA decline of \>= 50% from baseline (PSA50), using the Prostate Cancer Working Group 3 (PCWG3) criteria. Two-sided Wilson type 95% confidence interval (CI) estimates will be calculated.