Active clinical trials for "Prostatic Neoplasms"

This is an observational study in which patient data from the past on men with non-metastatic castration-resistant prostate cancer are studied. In observational studies, only observations are made without specified advice or interventions. Non-metastatic castration-resistant prostate cancer (nmCRPC) is a type of cancer of the prostate that has not yet spread to other parts of the body, but that no longer responds adequately to initial hormone therapy/androgen deprivation therapy (ADT). Androgens are male sex hormones such as testosterone. As they stimulate the growth of prostate cancer cells, low androgen levels are needed to reduce or slow the growth of these tumors. To reduce androgen levels in prostate cancer patients, the testes are removed through surgery or radiotherapy and subsequently androgen deprivation therapy (ADT) is started. In men with nmCRPC, the cancer worsens despite low testosterone levels (also called castration resistant). This worsening is called "biochemical progression" as there is an increase in the blood level of cancer biomarkers, such as prostate specific antigen [PSA] without detectable disease. PSA is a protein that is made by both normal cells and by cancerous cells in the body. Thus, PSA levels can be taken as a marker for prostate cancer development. Men with nmCRPC usually have higher levels of PSA than normal. They are considered "high risk" if they show signs of quickly increasing PSA levels as this could mean that the tumor is growing and might spread to other parts of the body. Second generation androgen receptor inhibitors (SGARIs) including Darolutamide, Apalutamide, and Enzalutamide are available for the treatment of nmCRPC in addition to ADT. SGARIs work by blocking androgens from attaching to proteins in cancer cells in the prostate. It is already known that men with nmCRPC benefit from these treatments, but as men with nmCRPC commonly have no symptoms, an important therapeutic goal is to minimize side effects which can impact the patients' quality of life and potentially lead to the patient stop the treatment. Comparative studies using data from the same database to show how treatment with Darolutamide, Apalutamide, and Enzalutamide differ from each other, are missing. In addition, there are only limited information regarding using Darolutamide, Apalutamide, and Enzalutamide in real-world settings. In this study data are collected from the same database to learn how Darolutamide, Enzalutamide and Apalutamide are used and how safe they are under real world conditions in men with nmCRPC, who had not been treated before with SGARI or another drug called abiraterone. The main purpose is to learn to what extent SGARI treatments are taken as prescribed. To find this out, the researchers will count the number of participants who have stopped their treatment with Darolutamide, Enzalutamide or Apalutamide at or before: 6 months 12 months 18 months of treatment in usual practice. In addition, characteristics of each participant group and the reason for discontinuation (stopping the treatment) will be collected and described. The researchers will also collect any medical problems during treatment and up to 30 days after stopping the treatment and that may or may not be related to the study treatment. These medical problems are also known as "adverse events" (AE). The data for this study will come from the US urology EMR ( Electronic Medical Record) database. This study will include all US patients identified in the Precision Point Specialty (PPS) urology electronic medical record (EMR) database between August 1, 2019 and September 30, 2021. The researchers will collect data from each patient for a minimum of 6 months after initiation of the SGARI treatment and up to the end of the study (March 31, 2022) or latest data cut available at the start of data extraction. There are no required visits in this study and treatment will not be influenced.

To investigate the effects of positive end-expiratory pressure (PEEP) on the intracerebral pressure (ICP) and intraocular pressure (IOP) in patients undergoing robot assisted laparoscopic radical prostatectomy (RALRP)

Men with high risk prostate cancer who underwent radiotherapy of the prostate/seminal vesicles or underwent postoperative radiotherapy including pelvic lymph nodes between 2010 and 2016 are analyzed retrospectively. The aims are to estimate progression-free survival as well as toxicity according to CTCAE v4.03.

This study is a multi-centre, prospective observational study. The study plans to enrol 500 patients with localized or locally advanced prostate cancer who are eligible and intended to be prescribed Zoladex® (goserelin acetate implant) 10.8 mg or Zoladex® (goserelin acetate implant) 3.6 mg as monotherapy or in combination with androgen blockade (CAB) at 50 clinical sites in China. The effectiveness and safety data will be collected at baseline and each visit within 26 weeks after treatment of Zoladex®.

Radium-223 is the 5th treatment for metastasized castration resistant prostate cancer with a proven overall survival benefit. The improved survival of Radium-223 over placebo was demonstrated in the ALSYMPCA trial, which included a miscellaneous patient population both docetaxel pretreated and non-pretreated. This registry aims to describe non-study patients treated with Radium-223 and prospectively evaluate treatment outcomes of patients with and without docetaxel pretreatment. Analgesic use and patient reported pain scores, efficacy of the subsequent therapy and overall survival will be evaluated. Moreover, clinical and explorative serum and blood biomarkers of Radium-223 efficacy will be explored.

Men with indolent forms of prostate cancer are managed expectantly using active surveillance, with a goal of delaying treatment and its deleterious side effects. However, almost 50% of men experience progression with this approach and require treatment. Elevated body mass index (BMI) is associated with a dramatically increased risk of progression to higher grade prostate cancer. The goal of the proposed research is to gather preliminary data evaluating the effects of a promising dietary strategy to delay cancer progression in overweight and obese prostate cancer patients undergoing active surveillance. The investigators hypothesize that a ketogenic diet intervention may reduce BMI and favorably alter the prostate microenvironment.

Through this study, the investigators seek to identify the benefits (improved survival) and harms (more procedures, more treatment, side effects, and quality-of-life impact) from different surveillance frequencies-every three vs. six vs. 12 months. Using the National Cancer Database and quality-of-life data from a large group of prostate cancer survivors, the investigators aim to compare survival, procedures/tests, treatments, and side effects in prostate cancer survivors who are followed with alternative surveillance frequencies and compare quality-of-life outcomes. The overall goal of the study is to provide high-quality data that will allow development of a personalized, risk-based tailored approach to post-treatment surveillance for prostate cancer.

This is a biopsy feasibility study in which patients with castration resistant prostate cancer (CRPC) will be asked to donate primary and metastatic tumour tissue (both archival and de novo), blood samples, a urine specimen and clinical data for research.

The purpose of this study is to describe patterns of care in CRPC patients, as well as health-related quality of life (HRQoL) outcomes associated with CRPC and its management. This study will also describe factors influencing treatment decisions including reason(s) for treatment choices and triggers for treatment changes for CRPC as well as describe clinical outcomes based on patient characteristics.

The purpose of this study is to assess the treatment patterns in participants with metastatic castration-resistant prostate cancer (mCRPC). Additionally, participant's demographic and clinical characteristics, skeletal-related events, criteria used to define CRPC, prostate specific antigen (PSA) levels and pain related to disease and overall survival will be observed.