University of California, San Francisco
This is a single center single arm prospective pilot study investigating the safety of high dose rate (HDR) brachytherapy as monotherapy delivered in 2 fractions 3 hours apart. HDR monotherapy has been established as safe and effective in this context, however previous studies have delivered 2 fractions on separate days, or at least 6 hours apart. Clinically, this regimen, if shown to be safe and effective in future studies, has the potential to reduce operative resources and logistical stresses on brachytherapy departments.
PRIMARY OBJECTIVES: I. To determine the safety of HDR monotherapy 13.5 Gy x 2 fractions delivered 3 hours apart in patients with low and intermediate risk prostate cancer. SECONDARY OBJECTIVES: I. To describe the prostate specific antigen (PSA) kinetics associated with HDR brachytherapy monotherapy 13.5 Gy x 2 fractions delivered 3 hours apart for low and intermediate risk prostate cancer. OUTLINE: Treatment will be administered on an outpatient basis. All treatment will be delivered over a single day. Participants will be followed for 6 months after last treatment or removal from study,…
Inclusion Criteria: 1. Participants must have histologically or cytologically confirmed diagnosis of prostate adenocarcinoma. 2. National Comprehensive Cancer Network favorable intermediate risk stratification, defined as one or more intermediate risk factors such as cT2b - cT2c category, grade group 1 or 2, or PSA 10-20 ng/mL, and less than 50% of biopsy cores positive for carcinoma (i.e. for this trial, we will only include systematic biopsy cores, not targeted biopsy cores). 3. Age \>=18 years. 4. Eastern Cooperative Oncology Group (ECOG) performance status \<2 (Karnofsky \>60%). 5. Eligib…
High dose rate brachytherapy delivered in 13.5 Gy x 2 fractions over a single implant procedure 3 hours apart
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