Predicting Cognitive Decline From Androgen Deprivation Therapy

Inclusion Criteria: Patient Participants- * Age 18 years or greater. * Fluent in reading, listening to, and writing English. * Current or prior diagnosis of prostate adenocarcinoma based on a pathology report or as documented in a medical oncology, urology, or radiation oncology note. * Access and ability to use a computer or mobile device with Internet connectivity to complete study procedures. * Telephone Montreal Cognitive Assessment (T-MoCA) of 16 or greater. * Eastern Cooperative Oncology Group (ECOG) performance status 0-2 (documented within past 3 months, otherwise patient-reported). Study partner participants- * Age 18 years or greater * Fluent in reading, listening to, and writing English * Identified by patient participant as a person who knows patient participant well, like a friend, family member or spouse. * Access and ability to use a computer or mobile device with internet connectivity to complete study procedures. Only the ADT cohort- * Anticipated to start ADT, which includes one of the following two treatments * Gonadotropin-releasing hormone (GnRH) agonist (e.g., leuprolide, goserelin, and others). * GnRH antagonist (i.e., degarelix or relugolix). * Anticipated to remain on ADT for at least 12 months. * Concurrent first-generation anti-androgens (e.g., bicalutamide, flutamide, nilutamide) and novel androgen-signaling inhibitors (e.g., abiraterone, enzalutamide, and apalutamide) are allowed. * Concurrent radiation is allowed. Only the PC cohort- …