ASCO 2021: VISION Study Results Discussion: Lutetium-177-PSMA-617 in Patients With Metastatic Castration-Resistant Prostate Cancer

(UroToday.com)  Dr. Taplin began her discussion of the VISION trial by first reviewing the current therapeutic landscape of prostate cancer. While there are many life-prolonging options, unfortunately, the duration of response to these therapies in sequence is often short. The VISION trial was set up to evaluate the use of lutetium-PSMA in late-stage advanced prostate […]

ASCO 2021: Differential Responses to Taxanes and PARP Inhibitors in ATM- Versus BRCA2-Mutated mCRPC Patients

(UroToday.com) PARP inhibitors have shown promise in mCRPC patients with mutations in DNA repair, but ATM- and BRCA2-altered patients may respond differently to PARP inhibitors. Both rucaparib and olaparib were approved in May 2020 for BRCA2 and homologous recombination repair (HRR) gene-mutated mCRPC, respectively. However, the sequencing and efficacy of therapies in HRR-mutated mCRPC is not well-established. At the […]

ASCO 2021: Biomarker Analysis of Phase IB Trial of Radium-223 and Niraparib in Patients with mCRPC (NiraRad)

(UroToday.com) Radium-223 is an alpha particle emitter that causes DNA double strand breaks and has been FDA-approved for use in mCRPC patients with bone metastases. PARP-1 activity critically supports androgen receptor activity in mCRPC and potentiates androgen receptor-dependent DNA damage response pathways that promote prostate cancer cell survival. Niraparib is a potent and selective PARP-1/2 inhibitor […]

ASCO 2021: Association of ATM Mutations in Metastatic Prostate Cancer with Differential Genomic Alteration Profiles from Homologous Recombination Deficient and Proficient Tumors

(UroToday.com) PARP inhibitors are approved for patients with metastatic prostate cancer and mutations in certain DNA-repair associated genes, such as ATM and BRCA2. ATM mutations have been included in a list of actionable mutations for PARP inhibitor therapeutic trials, however, despite preclinical evidence, PARP inhibitors have shown minimal clinical activity in ATM mutant prostate cancer. At […]

ASCO 2021: Pembrolizumab in Combination With Gemcitabine and Concurrent Hypofractionated Radiation Therapy As Bladder Sparing Treatment for Muscle-Invasive Bladder Cancer: A Multicenter Phase 2 Trial

(UroToday.com) Curative intent therapy in muscle-invasive bladder cancer includes neoadjuvant cisplatin-based chemotherapy followed by radical cystectomy, whereas trimodality bladder preservation therapy (maximal TURBT followed by concurrent chemoradiation) is a standard treatment option for clinically localized muscle-invasive bladder cancer, also with curative intent. While no randomized trials exist, propensity risk-matched cohort analyses suggest similar DSS and OS […]

ASCO 2021: Analysis of Two Poor Prognosis Subgroups in ACIS Evaluating Apalutamide + Abiraterone Acetate + Prednisone Versus Placebo + Abiraterone Acetate + Prednisone in mCRPC

(UroToday.com) In the double-blind placebo-controlled ACIS study, investigator-assessed radiographic progression-free survival (rPFS) was significantly improved with apalutamide + abiraterone acetate + prednisone versus placebo + abiraterone acetate + prednisone in chemotherapy-naive mCRPC, with no significant new safety signals. Among prespecified subgroups, efficacy and safety were explored in two difficult to treat subgroups: patients with visceral disease […]

ASCO 2021: Copy Number Profiles of Primary Tumors for Risk Stratification of Advanced Prostate Cancer: A Biomarker Study Embedded in the Multicenter STAMPEDE Trial

(UroToday.com) Men with advanced hormone-sensitive prostate cancer (HSPC) starting long-term androgen deprivation therapy (ADT) follow a highly variable clinical course. Treatment intensification with docetaxel or androgen receptor-targeted therapies improves outcomes but there is a risk of overtreatment, especially in non-metastatic (M0) or metastatic (M1) low volume disease. As such, Dr. Emily Grist and colleagues established a […]

ASCO 2021: Oligometastases in Prostate Cancer: How to Rationally Incorporate Metastasis-Directed Therapy Into Your Practice: International Perspective

(UroToday.com) Case 1: 65M with first PSA of 18 ng/mL. MRI of the prostate shows T3a lesion in the right peripheral zone, and biopsy reveals Gleason 4+4 adenocarcinoma. Conventional imaging is negative for metastatic disease, but a PSMA-PET shows oligometastatic disease. Specifically, he is found to have three small osseous metastatic lesions

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