Petros Grivas MD, PhD

Professor, Clinical Research Division, Fred Hutch, Clinical Director, Genitourinary Cancers Program, Fred Hutch

Professor, Clinical Research Division, Fred Hutch, Clinical Director, Genitourinary Cancers Program, Fred Hutch

Articles by Petros Grivas MD, PhD

Dr. Teplinsky addresses where ctDNA and MRD testing fit within the patient care continuum, noting that value isn't uniform across disease stages or tumor types. The strongest signal currently exists in the post-treatment surveillance setting, where tumor-informed assays can identify patients at higher recurrence risk before disease becomes visible on imaging.

Dr. John Strickler introduces the program on circulating tumor DNA (ctDNA) and minimal residual disease (MRD) testing across solid tumors, joined by Dr. Eleonora Teplinsky (breast and gynecologic oncology, Valley Health System), Dr. Ben Weinberg (gastrointestinal oncology, Georgetown University), Dr. Petros Grivas (genitourinary oncology, Fred Hutchinson Cancer Center), and Dr. Luis Raez (thoracic oncology, Memorial Healthcare System).

4 experts in this video

Panelists discuss how successful metastatic castration-sensitive prostate cancer (mCSPC) management requires balancing cancer control with quality-of-life preservation, emphasizing the need for better tools to measure patient-reported outcomes, comprehensive survivorship care addressing cardiovascular and bone health, and personalized approaches that help patients understand their prognosis while maintaining their ability to thrive during treatment.

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Panelists discuss how quality-of-life considerations are paramount in treatment selection for patients with metastatic castration-sensitive prostate cancer (mCSPC), with data showing that achieving ultralow prostate-specific antigen (PSA) levels correlates with better quality-of-life outcomes and that tolerability profiles, particularly regarding fatigue and drug-drug interactions, significantly impact daily patient experience.

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Panelists discuss how managing patients with suboptimal prostate-specific antigen (PSA) response or rising PSA requires careful consideration of PSA kinetics, doubling time, duration of prior response, and imaging findings to determine whether to continue monitoring, add therapy, or transition to castration-resistant treatment approaches.

4 experts in this video

Panelists discuss how data from the International Registry for Men with Advanced Prostate Cancer (IRONMAN) demonstrates that achieving a prostate-specific antigen (PSA) threshold below 0.2 ng/mL at 6 to 12 months is associated with improved progression-free survival and overall survival regardless of treatment regimen.

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Panelists discuss how prostate-specific antigen (PSA) nadir serves as a crucial prognostic marker in metastatic castration-sensitive prostate cancer (mCSPC), with faster drops to lower levels (particularly below 0.2) correlating with better outcomes, whereas imaging frequency should be customized based on clinical status and PSA kinetics.

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Panelists discuss how androgen deprivation therapy (ADT) monotherapy is no longer acceptable for metastatic castration-sensitive prostate cancer (mCSPC), emphasizing that combination therapy with androgen receptor (AR) pathway inhibitors or chemotherapy plus universal germline testing should be the new standard of care.

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Panelists discuss how the ARANOTE trial’s progression-free survival benefits with darolutamide inform treatment selection between doublet and triplet approaches, emphasizing personalized decision-making based on tumor burden, patient performance status, and the “first shot, best shot” treatment philosophy.

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Panelists discuss how clinical factors, including disease characteristics (Gleason score, volume, metastatic sites), patient factors (performance status, comorbidities, symptoms), and emerging genomic biomarkers, guide treatment intensification decisions in metastatic castration-sensitive prostate cancer.