Trial Design and Objectives for Patients With Prostate Cancer: Recommendations From the Prostate Cancer Working Group 4

A Andrew J. Armstrong M Michael J. Morris (Department of Medicine, Memorial Sloan Kettering Cancer Center) W Wassim Abida (Department of Medicine, Memorial Sloan Kettering Cancer Center) R Rahul R. Aggarwal (San Francisco Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA) E Emmanuel S. Antonarakis (Masonic Cancer Center, University of Minnesota) G Gerhardt Attard H Himisha Beltran A Alan Bryce (City of Hope Cancer Center, Goodyear, AZ) M Michael A. Carducci (Johns Hopkins, Baltimore, MD) H Heather H. Cheng (University of Washington, Seattle, WA) D Delphine L. Chen (Fred Hutch Cancer Center, Seattle, WA) K Kim N. Chi D Daniel S. Childs W William Dahut (American Cancer Society, Atlanta, GA) L Louise Emmett K Karim Fizazi (Centre Oscar Lambret, University of Paris-Saclay, Lille, France) A Andrei Gafita (Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD) D Daniel J. George (Duke Cancer Institute, Duke University School of Medicine, Durham, NC) K Ken Hermann (2Department of Nuclear Medicine, University Hospital Essen, Essen, Germany, Essen, Germany) M Michael S. Hofman (Peter MacCallum Cancer Centre, Melbourne, VIC, Australia) T Thomas Hope (University of California, San Francisco, San Francisco, CA) M Maha Hussain W W. Kevin Kelly (Sidney Kimmel School of Medicine at Thomas Jefferson University, Philadelphia, PA) E Elizabeth Kessler (University of Colorado School of Medicine, Aurora, CO) P Phillip H. Kuo (Department of Radiology, City of Hope National Medical Center, Duarte, CA) J Joshua Lang (University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI) G Glenn Liu (University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI) C Catherine H. Marshall A Alicia K. Morgans (Dana-Farber Cancer Institute, Boston, MA) R Rana R. McKay (Department of Medicine, Urology, and Radiation Medicine and Applied Sciences University of California‐San Diego La Jolla California USA) D David Nanus (Weill Cornell Medicine, New York, NY) P Peter Nelson (Fred Hutch Cancer Center, Seattle, WA) C Channing Paller (Sidney Kimmel Cancer Center, Johns Hopkins University, Baltimore, MD) Z Zachery R. Reichert (Division of Hematology/Oncology, University of Michigan, Ann Arbor, MI) C Charles J. Ryan (Memorial Sloan Kettering Cancer Center, New York, NY) A A. Oliver Sartor (Transformational Prostate Cancer Research Center, LCMC Health, New Orleans, LA) H Heiko Schoder (1memorial Sloan Kettering, NYC, United States) L Lawrence H. Schwartz N Nima Sharifi W Walter M. Stadler (City of Hope Cancer Center, Chicago, IL) M Mark Stein (Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY) C Cora N. Sternberg (Andrew J. Armstrong, MD, ScM, FACP, Division of Medical Oncology, Department of Medicine, Duke Cancer Institute Center for Prostate and Urologic Cancer, Duke University, Durham, NC; Arun A. Azad, MBBS, PhD; Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Australia, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia; Fred Saad, MD, University of Montreal Hospital Center, Montreal, QC, Canada; Maha Hussain, MD, FACP, FASCO, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL; Taro Iguchi, MD, PhD, Department of Urology, Kanazawa Medical University, Ishikawa, Japan; Arnulf Stenzl, MD, Department of Urology, University of Tübingen, Tübingen, Germany; and Cora N. Sternberg, MD, FACP, Englander Institute for Precision Medicine, Meyer Cancer Center, Weill Cornell Medicine, New York, NY) R Russell Z. Szmulewitz (Department of Medicine, University of Chicago, Chicago, IL) S Scott T. Tagawa (Weill Cornell Medical Center, NewYork Presbyterian Hospital, New York, NY) A Alexandra O. Sokolova (Hematology Oncology, Oregon Health and Science University, Portland, OR) A Alex W. Wyatt K Kosj Yamoah (Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL) E Evan Y. Yu (Fred Hutchinson Cancer Center, University of Washington, Seattle, WA) S Susan Halabi (From the Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda (A.B.A., N.S., S.N., L.L., L.C.), the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (J.H.-C.), and the Investigational Drug Branch, Cancer Therapy Evaluation Program, National Cancer Institute, National Institutes of Health, Rockville (H.S., E.S.) — all in Maryland; the Alliance Statistics and Data Management Center, Mayo Clinic, Rochester, MN (K.V.B., M.O., C.M., G.P.B.); AdventHealth Cancer Institute and the University of Central Florida, Orlando (G.S.); Dana–Farber/Harvard Cancer Center, Boston (S.B., B.M.); UNC Lineberger Comprehensive Cancer Center, Chapel Hill (W.Y.K.), and Duke University Medical Center and Duke Cancer Institute, Durham (J.H., S.H.) — both in North Carolina; the University of Kansas Cancer Center, Westwood (R.P.); Memorial Sloan Kettering Cancer Center, New York (M.Y.T., M.J.M., J.E.R.), and Roswell Park Comprehensive Cancer Center, Buffalo (G.C.) — both in...) H Howard I. Scher (Memorial Sloan Kettering Cancer Center, New York, NY) J Joshi J. Alumkal (Rogel Cancer Center, University of Michigan, Ann Arbor, MI) A Ana Aparicio (Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX) P Pedro Barata C Charles Drake J Julie Graff A Anis A. Hamid E Elisabeth I. Heath (Department of Medical Oncology, Mayo Clinic Rochester, Rochester, MN) J Jones Nauseef D Daniel Lage N Nadine Mallak A Akash Patnaik K Kristofer Prepelica D Dana E. Rathkopf M Matthew Rettig (Department of Medical Oncology, University of Southern California, Los Angeles, Los Angeles, CA) S Steven P. Rowe S Susan F. Slovin (Memorial Sloan Kettering Cancer Center, New York, NY) M Mary-Ellen Taplin (Dana–Farber Cancer Institute, Boston) N Nicholas Zorko

Abstract

PURPOSE The continuous development of new imaging approaches, molecular phenotyping, genetic subtypes, prognosis assessments, and effective therapies across a range of disease states has created a need to redefine terminology and best practices for clinical trial conduct in patients with advanced prostate cancer. Methods We convened an international expert committee of diverse working groups, the Prostate Cancer Working Group 4 (PCWG4), between 2016 and 2025. Our objective was to formulate updated criteria based on emerging evidence and clinical trial data in a biomarker context to provide guidance for clinical trial design, eligibility, and end point assessments for patients with advanced prostate cancer. RESULTS PCWG4 redefines terminology around the disease state and previous therapies in a patient-centric context and terminology focused on androgen pathway modulation. We consider imaging, with a particular focus on positron emission tomography (PET)–defined disease. New recommendations are provided for disease state terminology, defining eligibility criteria, response and delay/prevent end points, intervals for reassessments including imaging, and patient-reported outcome determination. We provide recommendations in a biomarker-based context of use for the intended indication, reflective of patient benefit for specific interventions. We emphasize the need for development of validated PET imaging and molecular and phenotypic criteria as well as trial designs to appropriately risk stratify patients, predict and assess benefit, and measure post-treatment outcomes reliably in a trial framework. CONCLUSION PCWG4 updates recommendations on patient and tumor characterization, therapy development, and imaging criteria and extends guidance into earlier androgen pathway modulator–naïve/sensitive disease states to reflect an evolving, heterogeneous, and diverse patient population to optimize treatment benefits for all patients.

Article Details

Volume / Issue Vol. 44, Issue 13
Published May 01, 2026
Pages 1249-1265
ISSN 0732-183X
Publisher Lippincott Williams & Wilkins

Journal Info

Journal of Clinical Oncology

Lippincott Williams & Wilkins

ISSN: 0732-183X Health Sciences

Authors (68)

A

Andrew J. Armstrong

M

Michael J. Morris

Department of Medicine, Memorial Sloan Kettering Cancer Center

W

Wassim Abida

Department of Medicine, Memorial Sloan Kettering Cancer Center

R

Rahul R. Aggarwal

San Francisco Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA

E

Emmanuel S. Antonarakis

Masonic Cancer Center, University of Minnesota

G

Gerhardt Attard

H

Himisha Beltran

A

Alan Bryce

City of Hope Cancer Center, Goodyear, AZ

M

Michael A. Carducci

Johns Hopkins, Baltimore, MD

H

Heather H. Cheng

University of Washington, Seattle, WA

D

Delphine L. Chen

Fred Hutch Cancer Center, Seattle, WA

K

Kim N. Chi

D

Daniel S. Childs

W

William Dahut

American Cancer Society, Atlanta, GA

L

Louise Emmett

K

Karim Fizazi

Centre Oscar Lambret, University of Paris-Saclay, Lille, France

A

Andrei Gafita

Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD

D

Daniel J. George

Duke Cancer Institute, Duke University School of Medicine, Durham, NC

K

Ken Hermann

2Department of Nuclear Medicine, University Hospital Essen, Essen, Germany, Essen, Germany

M

Michael S. Hofman

Peter MacCallum Cancer Centre, Melbourne, VIC, Australia

T

Thomas Hope

University of California, San Francisco, San Francisco, CA

M

Maha Hussain

W

W. Kevin Kelly

Sidney Kimmel School of Medicine at Thomas Jefferson University, Philadelphia, PA

E

Elizabeth Kessler

University of Colorado School of Medicine, Aurora, CO

P

Phillip H. Kuo

Department of Radiology, City of Hope National Medical Center, Duarte, CA

J

Joshua Lang

University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI

G

Glenn Liu

University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI

C

Catherine H. Marshall

A

Alicia K. Morgans

Dana-Farber Cancer Institute, Boston, MA

R

Rana R. McKay

Department of Medicine, Urology, and Radiation Medicine and Applied Sciences University of California‐San Diego La Jolla California USA

D

David Nanus

Weill Cornell Medicine, New York, NY

P

Peter Nelson

Fred Hutch Cancer Center, Seattle, WA

C

Channing Paller

Sidney Kimmel Cancer Center, Johns Hopkins University, Baltimore, MD

Z

Zachery R. Reichert

Division of Hematology/Oncology, University of Michigan, Ann Arbor, MI

C

Charles J. Ryan

Memorial Sloan Kettering Cancer Center, New York, NY

A

A. Oliver Sartor

Transformational Prostate Cancer Research Center, LCMC Health, New Orleans, LA

H

Heiko Schoder

1memorial Sloan Kettering, NYC, United States

L

Lawrence H. Schwartz

N

Nima Sharifi

W

Walter M. Stadler

City of Hope Cancer Center, Chicago, IL

M

Mark Stein

Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY

C

Cora N. Sternberg

Andrew J. Armstrong, MD, ScM, FACP, Division of Medical Oncology, Department of Medicine, Duke Cancer Institute Center for Prostate and Urologic Cancer, Duke University, Durham, NC; Arun A. Azad, MBBS, PhD; Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Australia, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia; Fred Saad, MD, University of Montreal Hospital Center, Montreal, QC, Canada; Maha Hussain, MD, FACP, FASCO, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL; Taro Iguchi, MD, PhD, Department of Urology, Kanazawa Medical University, Ishikawa, Japan; Arnulf Stenzl, MD, Department of Urology, University of Tübingen, Tübingen, Germany; and Cora N. Sternberg, MD, FACP, Englander Institute for Precision Medicine, Meyer Cancer Center, Weill Cornell Medicine, New York, NY

R

Russell Z. Szmulewitz

Department of Medicine, University of Chicago, Chicago, IL

S

Scott T. Tagawa

Weill Cornell Medical Center, NewYork Presbyterian Hospital, New York, NY

A

Alexandra O. Sokolova

Hematology Oncology, Oregon Health and Science University, Portland, OR

A

Alex W. Wyatt

K

Kosj Yamoah

Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL

E

Evan Y. Yu

Fred Hutchinson Cancer Center, University of Washington, Seattle, WA

S

Susan Halabi

From the Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda (A.B.A., N.S., S.N., L.L., L.C.), the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (J.H.-C.), and the Investigational Drug Branch, Cancer Therapy Evaluation Program, National Cancer Institute, National Institutes of Health, Rockville (H.S., E.S.) — all in Maryland; the Alliance Statistics and Data Management Center, Mayo Clinic, Rochester, MN (K.V.B., M.O., C.M., G.P.B.); AdventHealth Cancer Institute and the University of Central Florida, Orlando (G.S.); Dana–Farber/Harvard Cancer Center, Boston (S.B., B.M.); UNC Lineberger Comprehensive Cancer Center, Chapel Hill (W.Y.K.), and Duke University Medical Center and Duke Cancer Institute, Durham (J.H., S.H.) — both in North Carolina; the University of Kansas Cancer Center, Westwood (R.P.); Memorial Sloan Kettering Cancer Center, New York (M.Y.T., M.J.M., J.E.R.), and Roswell Park Comprehensive Cancer Center, Buffalo (G.C.) — both in...

H

Howard I. Scher

Memorial Sloan Kettering Cancer Center, New York, NY

J

Joshi J. Alumkal

Rogel Cancer Center, University of Michigan, Ann Arbor, MI

A

Ana Aparicio

Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX

P

Pedro Barata

C

Charles Drake

J

Julie Graff

A

Anis A. Hamid

E

Elisabeth I. Heath

Department of Medical Oncology, Mayo Clinic Rochester, Rochester, MN

J

Jones Nauseef

D

Daniel Lage

N

Nadine Mallak

A

Akash Patnaik

K

Kristofer Prepelica

D

Dana E. Rathkopf

M

Matthew Rettig

Department of Medical Oncology, University of Southern California, Los Angeles, Los Angeles, CA

S

Steven P. Rowe

S

Susan F. Slovin

Memorial Sloan Kettering Cancer Center, New York, NY

M

Mary-Ellen Taplin

Dana–Farber Cancer Institute, Boston

N

Nicholas Zorko