Metastatic Prostate Carcinoma Clinical Trial
Official title:
A First-in-Human, Phase I PET Imaging Study of 11C-YJH08, a Selective Glucocorticoid Receptor-Targeting Agent, in Patients With Advanced Solid Tumor Malignancies
This phase I trial studies if positron emission tomography (PET) imaging using 11C-YJH08 can be useful for detecting certain cell receptor expression in tumor cells in patients with prostate cancer that has spread to other parts of the body (metastatic). 11C-YJH08 is a small-molecule radiotracer that binds to receptors on cells (glucocorticoid receptor) so that they show up better on the PET scan. Anti-hormone therapy (including enzalutamide) can cause more glucocorticoid receptors to be produced in tumor cells, which can make the tumor cells resist hormone therapies. If researchers can find a better way to detect whether glucocorticoid receptors are increasing during therapy, it may lead to more successful therapies using glucocorticoid receptor antagonists.
PRIMARY OBJECTIVES: I. To determine the feasibility of metastatic lesion detection in enzalutamide/apalutamide-resistant metastatic castration-resistant prostate cancer (mCRPC) using 11C-YJH08 PET. (Cohort A) II. To determine the mean percent change from baseline at the time of progression on enzalutamide or apalutamide in standardized uptake value (SUV)max-ave on paired 11C-YJH08 PET on a per-patient and per-lesion basis. (Cohort B) SECONDARY OBJECTIVES: I. To determine the safety and determine average organ uptake of 11C-YJH08. (Cohort A and B) II. To descriptively report the patterns of intra-tumoral uptake of 11C-YJH08 on whole body PET, including by site of disease, uptake by tumor type, inter-tumoral and inter-patient heterogeneity, and tumor-to-background signal. (Cohort A and B) III. To determine whether baseline uptake on 11C-YJH08 PET is associated with subsequent clinical outcomes including objective response rate, progression-free survival, and prostate specific antigen (PSA50) response. (Cohort B) EXPLORATORY OBJECTIVE: I. To determine the association between uptake on 11C-YJH08 PET with glucocorticoid receptor (GR) expression and transcriptional signature scores on paired metastatic tumor biopsies. OUTLINE: Patients are assigned to 1 of 2 arms. ARM I: Patients receive 11C-YJH08 intravenously (IV) over 1-2 minutes and 10-60 minutes later, undergo either PET/magnetic resonance imaging (MRI) or PET/computed tomography (CT) over 90 minutes at baseline. ARM II: Patients receive 11C-YJH08 IV over 1-2 minutes and 10-60 minutes later, undergo either PET/MRI or PET/CT over 90 minutes at baseline and at time of disease progression. After completion of study treatment, patients are followed up on day 1. ;
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