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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05733351
Other study ID # STUDY00004688
Secondary ID NCI-2023-00171ST
Status Recruiting
Phase Phase 1
First received
Last updated
Start date August 3, 2023
Est. completion date December 16, 2027

Study information

Verified date August 2023
Source Emory University
Contact Bassel Nazha, MD, MPH
Phone 404-778-1900
Email bnazha@emory.edu
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This phase I trial tests the safety and effectiveness of vudalimab (XmAb20717) in combination with standard of care treatment abiraterone, enzalutamide, or abiraterone plus docetaxel in treating patients with castration sensitive prostate cancer that has spread to other places in the body (metastatic). Immunotherapy with monoclonal antibodies, such as vudalimab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Adding vudalimab to standard of care treatments may be effective in treating metastatic castration sensitive prostate cancer.


Description:

PRIMARY OBJECTIVE: I. To determine the safety and tolerability of vudalimab (XmAb20717) in combination with standard of care treatment in subjects with metastatic castration sensitive prostate cancer (mCSPC) as assessed by frequency and intensity of adverse events. SECONDARY OBJECTIVE: I. To assess the preliminary antitumor activity of vudalimab (XmAb20717) with standard of care treatment. TERTIARY/EXPLORATORY OBJECTIVE: I. To identify factors that may be indicative of response to vudalimab (XmAb20717) in combination with standard of care treatments. OUTLINE: Patients are assigned to 1 of 3 cohorts. COHORT A: Patients receive vudalimab intravenously (IV) on days 1 and 15 plus abiraterone orally (PO) once daily (QD) of 4-week cycles on study. Patients also undergo prostate-specific membrane antigen (PSMA) positron emission tomography (PET) and fludeoxyglucose (FDG) PET scans during screening. Patients also undergo computed tomography (CT) and/or magnetic resonance imaging (MRI) scans, bone scans, and blood sample collection throughout the study. COHORT B: Patients receive vudalimab IV on days 1 and 15 plus enzalutamide PO QD of 4-week cycles on study. Patients also undergo PSMA PET and FDG PET scans during screening. Patients also undergo CT and/or MRI scans, bone scans, and blood sample collection throughout the study. COHORT C: Patients receive vudalimab IV on days 1 and 15, docetaxel IV on days 1 and 22 plus abiraterone PO QD of 6-week cycles on study. Patients also undergo PSMA PET and FDG PET scans during screening. Patients also undergo CT and/or MRI scans, bone scans, and blood sample collection throughout the study.


Recruitment information / eligibility

Status Recruiting
Enrollment 30
Est. completion date December 16, 2027
Est. primary completion date December 16, 2026
Accepts healthy volunteers No
Gender Male
Age group 18 Years and older
Eligibility Inclusion Criteria: - Age >= 18 years - Histologically confirmed adenocarcinoma of the prostate with metastatic disease - Castration-sensitive status: either not have been treated with androgen deprivation therapy (ADT) (hormone therapy) or not on ADT at the time of progression - Participants can have received up to 3 months of ADT with luteinizing hormone-releasing hormone (LHRH) agonists or antagonists or orchiectomy with or without concurrent first-generation antiandrogens prior to enrollment, with no radiographic evidence of disease progression or rising prostate-specific antigen (PSA) prior to enrollment - Eastern Cooperative Oncology Group (ECOG) performance status =< 2 (Karnofsky >= 60%) - Life expectancy > 12 weeks as determined by the investigator - Hemoglobin >= 9.0 g/dl (within 28 days of cycle 1 day 1) (no transfusions allowed within 7 days of Cycle 1 Day 1 to meet entry criteria) - White blood cell (WBC) >= 2000/uL (within 28 days of cycle 1 day 1) (after at least 7 days without growth factor support or transfusion) - Absolute neutrophil count (ANC) >= 1,500/mcL (within 28 days of cycle 1 day 1) (after at least 7 days without growth factor support or transfusion) - Platelets >= 100,000/mcL (within 28 days of cycle 1 day 1) (no transfusions allowed within 7 days of cycle 1 day 1 to meet entry criteria) - Prothrombin time (PT)/ partial thromboplastin time (PTT) =< 1.5 x upper limit of normal (ULN) (within 28 days of cycle 1 day 1) - Total bilirubin =< 1.5 institutional upper limit of normal (ULN) (within 28 days of cycle 1 day 1) - Aspartate aminotransferase (AST) / alanine aminotransferase (ALT) =< 3 institutional upper limit of normal (ULN) (within 28 days of cycle 1 day 1) - Serum creatinine =< 2 mg/dL (or glomerular filtration rate >= 40 mL/min) (within 28 days of cycle 1 day 1) - Willingness to provide pre- and post-treatment fresh tumor biopsies, if safe and medically feasible - Male subjects must be surgically sterile or must agree to use adequate method of contraception from the time of consent until at least 120 days after the last dose of Xmab27017 - Willingness and ability of the subject to comply with scheduled visits, drug administration plan, protocol specified laboratory tests, other study procedures, and study restrictions - Completion of all previous surgery, radiotherapy, chemotherapy, immunotherapy, or investigational therapy for the treatment of cancer >= 2 weeks before the start of study therapy. (No radiotherapy to Xmab27017 injection site within 4 weeks) - Evidence of a personally signed informed consent indicating that the subject is aware of the neoplastic nature of the disease and has been informed of the procedures to be followed, the experimental nature of the therapy, alternatives, potential risks and discomforts, potential benefits, and other pertinent aspects of study participation Exclusion Criteria: - Patients who have had chemotherapy or radiotherapy within 4 weeks prior to entering the study or those who have not recovered from adverse events due to agents administered more than 4 weeks earlier (i.e., have residual toxicities > grade 1) - Patients who are receiving any other investigational agents or an investigational device within 21 days before administration of first dose of study drugs - Prior treatment with any CTLA4, PD1, or PDL1, or directed immunotherapy - History of allergic reactions attributed to compounds of similar chemical or biologic composition to (investigational new drug [IND] agent[s]) or other agents used in study - Have known active central nervous system metastases and/or carcinomatous meningitis. Subjects with previously treated brain metastases may participate provided they are radiologically stable, ie, are without evidence of progression for at least 4 weeks by repeat imaging (note that the repeat imaging should be performed during study screening), are clinically stable, and are without requirement of steroid treatment for at least 14 days prior to first dose of study treatment - Active known or suspected autoimmune disease (except that subjects are permitted to enroll if they have vitiligo; type 1 diabetes mellitus or residual hypothyroidism due to an autoimmune condition that is treatable with hormone replacement therapy only; psoriasis, atopic dermatitis, or another autoimmune skin condition that is managed without systemic therapy; or arthritis that is managed without systemic therapy beyond oral acetaminophen and nonsteroidal anti-inflammatory drugs) - Has any condition requiring systemic treatment with corticosteroids, prednisone equivalents, or other immunosuppressive medications within 14 days prior to first dose of study drug (except that inhaled or topical corticosteroids or brief courses of corticosteroids given for prophylaxis of contrast dye allergic response are permitted.) - Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements - Receipt of an organ allograft - Known history of left ventricular ejection fraction =< 40% - Receipt of a live-virus vaccine within 30 days prior to first dose of study drug (seasonal flu vaccines that do not contain live virus are permitted. COVID-19 vaccines are permitted) - Known human immunodeficiency virus (HIV) positive subject with CD4+ T-cell (CD4+) counts < 350 cells/uL, or an HIV viral load greater than 400 copies/mL, or a history of an AIDS (acquired immunodeficiency syndrome)-defining opportunistic infection within the past 12 months, or who has not been on established antiretroviral therapy (ART) for at least 4 weeks prior to initiation of study drug dosing. (Effective ART is defined as a drug, dosage, and schedule associated with reduction and control of the viral load.) - Known positive test for hepatitis C ribonucleic acid (RNA) (a subject who is hepatitis C virus [HCV] antibody positive but HCV RNA negative due to documented, curative prior antiviral treatment or natural resolution is eligible). - Known positive test for hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb; a subject whose HBsAg is negative and HBcAb is positive may be enrolled if a hepatitis B virus [HBV] deoxyribonucleic acid (DNA) test is negative, and the subject is retested for HBsAg and HBV DNA every 2 months)

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Abiraterone
Given PO
Procedure:
Biospecimen Collection
Undergo blood and stool sample collection
Bone Scan
Undergo bone scan
Computed Tomography
Undergo CT
Drug:
Docetaxel
Given IV
Enzalutamide
Given PO
Procedure:
FDG-Positron Emission Tomography
Undergo FDG PET
Magnetic Resonance Imaging
Undergo MRI
PSMA PET Scan
Undergo PSMA PET
Drug:
Vudalimab
Given IV

Locations

Country Name City State
United States Emory University Hospital Midtown Atlanta Georgia
United States Emory University Hospital/Winship Cancer Institute Atlanta Georgia

Sponsors (3)

Lead Sponsor Collaborator
Emory University National Cancer Institute (NCI), Xencor, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Incidence of Adverse Events Will be assessed using the National Cancer Institute, Common Terminology Criteria for Adverse Events, Version 5.0 where, Grade 1: Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated.
Grade 2: Moderate; minimal, local or noninvasive intervention indicated; limiting age appropriate instrumental activities of daily living.
Grade 3: Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self-care activities of daily living Grade 4: Life-threatening consequences; urgent intervention indicated. Grade 5: Death related to adverse event. Descriptive statistics will be used to summarize the toxicity profile of the intervention. Toxicities will be tabulated by grade, association, and cycle number.
Up to 70 days post treatment
Primary Radiographic Progression-Free Survival Will be assessed per Prostate Cancer Working Group modified Response Evaluation Criteria in Solid Tumors (RECIST 1.1) as outlined in Prostate Cancer Working Group 31 (soft tissue to be assessed by RECIST 1.1, and bone disease to be assessed by Prostate Cancer Working Group 3) by radiologic evaluation.
PSA response rate: PSA decline greater than or equal to 50% from baseline up to 24 weeks from treatment initiation.
Up to 3 years
Secondary Objective Response Rate Will be summarized with the 2-sided 95% CI using the Clopper-Pearson method. Kaplan-Meier methods will be used to estimate median survival time or time-specific survival rate with a 95% confidence interval for rPFS or a time-to-event outcome. Up to 3 years
Secondary PSA Response Rate PSA decline >= 50% and will be calculated along with 95% exact confidence intervals.
The fold change of the numbers of CD8 T-cells or other tumor-specific T-cells before and after treatment will be described by summary statistics (mean, median, Q1, Q3, standard deviation).
Baseline up to 24 weeks from treatment initiation
Secondary PSA undetectable rate PSA undetectable rate will be assessed by PSA < 0.2 ng/mL up to 24 weeks from treatment initiation. Will be estimated with the Kaplan-Meier method with time-specific rate estimated with 95%CI. Baseline up to 24 weeks from treatment initiation
Secondary Duration of response Will be assessed per PCWG-modified RECIST 1.1 and calculated along with 95% exact confidence intervals. Up to 3 years
See also
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Active, not recruiting NCT04033432 - sEphB4-HSA in Treating Patients With Metastatic Castration-Resistant Prostate Cancer Phase 2
Active, not recruiting NCT05496959 - 177-Lutetium-PSMA Before Stereotactic Body Radiotherapy for the Treatment of Oligorecurrent Prostate Cancer, The LUNAR Study Phase 2
Terminated NCT04134208 - An Investigational Scan (18F-Fluciclovine PET-CT) for the Measurement of Therapeutic Response in Patients With Metastatic Prostate Cancer Phase 4
Not yet recruiting NCT06236139 - Cell Therapy (STEAP1 CART) With Enzalutamide for the Treatment of Patients With Metastatic Castration-Resistant Prostate Cancer Phase 1/Phase 2
Recruiting NCT04423211 - Treating Prostate Cancer That Has Come Back After Surgery With Apalutamide and Targeted Radiation Based on PET Imaging Phase 3
Completed NCT04976257 - Pharmacokinetics of IA and IV Ga68-PSMA-11 Infusion Early Phase 1
Withdrawn NCT04585932 - Androgen Deprivation Therapy and Apalutamide With or Without Radiation Therapy for the Treatment of Biochemically Recurrent Prostate Cancer, RESTART Study Phase 2
Active, not recruiting NCT05241860 - Testing Interruption of Hormonal Medications in Patients Responding Exceptionally to Therapy for Metastatic Prostate Cancer, (A-DREAM) Phase 2
Recruiting NCT04159896 - ESK981 and Nivolumab for the Treatment of Metastatic Castration Resistant Prostate Cancer Phase 2
Recruiting NCT04314401 - National Cancer Institute "Cancer Moonshot Biobank"
Completed NCT05547386 - 68Ga-PSMA-11 PET/CT Screening Prior to 177Lu-PSMA-617 Therapy for Patients With Metastatic Castrate Resistant Prostate Cancer Phase 3
Recruiting NCT04734730 - Talazoparib With Androgen Deprivation Therapy and Abiraterone for the Treatment of Castration Sensitive Prostate Cancer Phase 2
Recruiting NCT06200103 - Schedule De-Escalation of 177Lu-PSMA-617 for the Treatment of Metastatic Castrate Resistant Prostate Cancer Phase 2
Recruiting NCT06039371 - Supraphysiological Androgen to Enhance Chemotherapy Treatment Activity in Metastatic Castration-Resistant Prostate Cancer, SPECTRA Study Phase 2
Recruiting NCT03866382 - Testing the Effectiveness of Two Immunotherapy Drugs (Nivolumab and Ipilimumab) With One Anti-cancer Targeted Drug (Cabozantinib) for Rare Genitourinary Tumors Phase 2
Active, not recruiting NCT04267887 - Advanced ChemoHormonal Therapy for Treatment Naive Metastatic Prostate Cancer Phase 2