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Spots Global Cancer Trial Database for Efficacy of Ra-223 in PSMA PET Optimally Selected Patients

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Trial Identification

Brief Title: Efficacy of Ra-223 in PSMA PET Optimally Selected Patients

Official Title: Efficacy of Ra-223 in PSMA PET Optimally Selected Patients

Study ID: NCT05924672

Study Description

Brief Summary: This phase II trial studies how well prostate-specific membrane antigen (PSMA) positron emission tomography (PET) scans (in combination with bone scans) work in selecting patients for Ra-223 radiation therapy that have castration-resistant prostate cancer that has spread from where it first started (primary site) to the bones (bone metastasis). Ra-223 is a type of therapy that emits radiation. Radiation gives off energy which can kill tumor cells and other cells that may support the tumor cells. Ra-223 is given by infusion into the veins, where it is absorbed by the bones. PSMA PET is a type of scan used to detect prostate cancer tumors. PSMA is a radioactive tracer that binds to a specific protein that is found on prostate tumor cells. The PSMA tracer shows the areas on the PET scan where tumor cells are active. A PET scan uses a special camera to detect the energy given off from radioactive tracers (such as PSMA) to make detailed pictures of areas where the tracer accumulates in the body. The PET scan is often combined with a magnetic resonance imaging (MRI) or computed tomography (CT) scan, which helps to map the locations where PSMA has accumulated. PSMA PET scans may be able to select patients that will benefit the most from Ra-223 treatment.

Detailed Description: PRIMARY OBJECTIVE: I. To determine the PSA50 response rate of participants treated with radium Ra 223 dichloride (Ra-223). SECONDARY OBJECTIVES: I. To determine the median overall survival (mOS) of participants treated with Ra-223. II. To determine the PSA30 response rate of partoicipants treated with Ra-223. III. To determine the time to the first skeletal symptomatic event. IV. To characterize the safety profile of Ra-223 treatment. V. To compare the lesion based PSMA PET response based on sodium fluoride (NaF) PET/technetium Tc-99m medronate (MDP) single photon emission computed tomography (SPECT) uptake. EXPLORATORY OBJECTIVES; I. To compare the PSA response stratified by PSMA PET tumor volume. II. To determine the location of progression by location. III. Safety on subsequent treatment with PSMA radioligand therapy (RLT). OUTLINE: Participants undergo NaF PET/CT or MDP scan within 45 days prior to standard of care (SOC) Ra-223 intravenously (IV). Treatment repeats every 28 days for 6 cycles in the absence of disease progression or unacceptable toxicity. Participants then undergo a PSMA PET/CT between 30-60 days after the last dose of Ra-223. Participants also undergo collection of blood samples during screening, on the first day of every Ra-223 cycle, and at 30 days after the last dose. Participants may also undergo a NaF PET/CT or MDP scan during treatment as clinically indicated, and/or CT scans during screening and treatment as clinically indicated. After completion of Ra-223 treatment, participants are followed up at 30 days, and then every 3-6 months.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: MALE

Healthy Volunteers: No

Locations

University of California, San Francisco, San Francisco, California, United States

Contact Details

Name: Thomas A Hope, MD

Affiliation: University of California, San Francisco

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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