News
Media
Conferences
Publications
Events
CME/CE
Resources
Career Center
Subscribe

Your AI-Trained Oncology Knowledge Connection!

Opinion|Videos|July 22, 2024

Is Clearance of ctDNA an Acceptable Surrogate End Point?

Author(s)Stacey A. Cohen, MD, Daniel H. Ahn, DO

Medical oncologists discuss whether ctDNA clearance can serve as an acceptable surrogate end point in the treatment of patients with colorectal cancer.

Episodes in this series

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 1 The Role of ctDNA as a Biomarker in Colorectal Cancer

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 2 Key Findings from the INTERCEPT Study

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 3 Frequency of ctDNA Testing and Future Directions in Detecting MRD

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 4 Comprehensive Insights on GALAXY Study in CIRCULATE-Japan

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 5 Is Clearance of ctDNA an Acceptable Surrogate End Point?

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 6 Recent Data from BESPOKE-CRC

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 7 DYNAMIC Clinical Trial: ctDNA Guiding Adjuvant Therapy in Stage II Colorectal Cancer

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 8 COBRA: Rates of ctDNA Clearance in Assay-Directed Therapy

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 9 Optimizing Clinical Research and Patient Perceptions of ctDNA Testing

Stacey A. Cohen, MD, and Daniel H. Ahn, DO, presenting slides

EP. 10 Key Takeaways on the Clinical Utility of ctDNA in Colorectal Cancer

Newsletter

Stay up to date on recent advances in the multidisciplinary approach to cancer.

Related Content

According to investigators of the phase 3 SCOT trial, most patients with colon and rectal cancer should be receiving only 3 months of adjuvant treatment.

Adjuvant Chemo Noninferor at 3 Months Vs 6 Months in Stage II/III CRC

February 1st 2026

People who consumed 14 or more drinks per week experienced a higher risk of colorectal cancer compared with those who consumed one or fewer drinks.

Heavy, Consistent Alcohol Intake Increases Risk of Colorectal Cancer

January 28th 2026

Data from the phase 3 BREAKWATER trial demonstrated that encorafenib plus cetuximab and chemotherapy yields clinical benefit for this patient population.

FDA Approves Liquid Biopsy CDx for Encorafenib Regimen in BRAF V600E+ CRC

January 22nd 2026

Taiwan FDA Approves Nivolumab/Ipilimumab for MSI-H/dMMR Metastatic CRC

ByCancer Network Staff

January 15th 2026

Next steps in surgery for gastroesophageal cancer include offerings for patients with advanced disease, such as those with oligometastases.

Outlining the Evolution of Surgical Practice in Gastroesophageal Cancer

ByDaniela Molena, MD

January 15th 2026

Latest CME

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | South Carolina

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | South Carolina

Misty D. Shields, MD, PhD; Rujul Parikh, MD

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Kansas

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Kansas

Charu Aggarwal, MD, MPH, FASCO; Yifan Tu, MD, PhD

Community Oncology Connections™: Beyond Primary End Points—Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Washington State Medical Oncology Society

Community Oncology Connections™: Beyond Primary End Points—Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Washington State Medical Oncology Society

Marla D. Lipsyc-Sharf, MD; Ashley Frith, MD

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Wyoming and Montana

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Wyoming and Montana

Charu Aggarwal, MD, MPH, FASCO; Mo Ziari, MD

Medical Crossfire®: Expert Perspectives on Targeting c-Met Overexpression and 𝘔𝘌𝘛 Genomic Alterations in NSCLC – Unveiling the Complexities of 𝘔𝘌𝘛 Dysregulation

Medical Crossfire®: Expert Perspectives on Targeting c-Met Overexpression and 𝘔𝘌𝘛 Genomic Alterations in NSCLC – Unveiling the Complexities of 𝘔𝘌𝘛 Dysregulation

Rebecca Heist, MD, MPH; Alex A. Adjei, MD, PhD, FACP; Sandip Patel, MD, FASCO; Jeremy Segal, MD, PhD

Tumor Board: Expert Insights on Managing Classical 𝘌𝘎𝘍𝘙 Mutations, 𝘌𝘎𝘍𝘙 Exon 20 Insertions, and Atypical 𝘌𝘎𝘍𝘙 Mutations in Metastatic NSCLC

Tumor Board: Expert Insights on Managing Classical 𝘌𝘎𝘍𝘙 Mutations, 𝘌𝘎𝘍𝘙 Exon 20 Insertions, and Atypical 𝘌𝘎𝘍𝘙 Mutations in Metastatic NSCLC

Balazs Halmos, MD, MS; Enriqueta Felip, MD, PhD; Julia Rotow, MD

Medical Crossfire®: Improving Patient Outcomes in Myeloproliferative Neoplasms With Novel Therapeutic Approaches

Medical Crossfire®: Improving Patient Outcomes in Myeloproliferative Neoplasms With Novel Therapeutic Approaches

Rami Komrokji, MD; Gabriela Hobbs, MD; John Mascarenhas, MD; Naveen Pemmaraju, MD

Medical Crossfire®: Harnessing the Power of Modern Therapies in Newly Diagnosed Multiple Myeloma

Medical Crossfire®: Harnessing the Power of Modern Therapies in Newly Diagnosed Multiple Myeloma

C. Ola Landgren, MD, PhD; Mohamad Mohty, MD, PhD; Surbhi Sidana, MD

Breast Cancer Tumor Board: Targeting TROP2 – Innovations in Triple-Negative Breast Cancer Treatment

Breast Cancer Tumor Board: Targeting TROP2 – Innovations in Triple-Negative Breast Cancer Treatment

Joyce O’Shaughnessy, MD; Matthew P. Goetz, MD; Hope S. Rugo, MD, FASCO

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | New Mexico

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | New Mexico

Zofia Piotrowska, MD, MHS; Shan Guo, MD

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | North Carolina

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | North Carolina

Misty D. Shields, MD, PhD; Michelle Ojemuyiwa, MD

Live Tumor Board: Squamous Cell Carcinoma of the Head & Neck – Post-CRT Decisions in the Locally Advanced Setting

In-Person + Virtual Event

Live Tumor Board: Squamous Cell Carcinoma of the Head & Neck – Post-CRT Decisions in the Locally Advanced Setting

February 19, 2026

A Breath of Strength: Managing Cancer Associated LEMS and Lung Cancer as One

A Breath of Strength: Managing Cancer Associated LEMS and Lung Cancer as One

Estelamari Rodriguez, MD, MPH; Millie Das, MD; Ruham Nasany, MD

Striking the Right Nerve: Managing Cancer Associated LEMS in Lung Cancer Patients

Striking the Right Nerve: Managing Cancer Associated LEMS in Lung Cancer Patients

Anne Chiang, MD, PhD; J. Douglas Miles, MD, PhD, FAAN; Suma Satti, MD

Show Me the Data™: Bridging Clinical Gaps Along the Continuum From Resectable, Early Stage to Advanced Gastric/Gastroesophageal Junction Cancers

Show Me the Data™: Bridging Clinical Gaps Along the Continuum From Resectable, Early Stage to Advanced Gastric/Gastroesophageal Junction Cancers

Zev A. Wainberg, MD; Manish A. Shah, MD, FASCO; Syma Iqbal, MD

19th Annual New York GU Cancers Congress™

In-Person Event

19th Annual New York GU Cancers Congress™

March 13-14, 2026

Medical Crossfire®: Expert Interpretations of the Latest Data in CLL Management – Understanding the Impact of Optimal Treatment Selection on Patient Outcomes

Medical Crossfire®: Expert Interpretations of the Latest Data in CLL Management – Understanding the Impact of Optimal Treatment Selection on Patient Outcomes

Jennifer R. Brown, MD, PhD; Alexey V. Danilov, MD, PhD; Matthew S. Davids, MD, MMSc

Virtual Testing Board: Digging Deeper on Your Testing Reports to Elevate Patient Outcomes in Advanced Non–Small Cell Lung Cancer

Virtual Testing Board: Digging Deeper on Your Testing Reports to Elevate Patient Outcomes in Advanced Non–Small Cell Lung Cancer

Stephen V. Liu, MD; Michelle Afkhami, MD; Ignacio I. Wistuba, MD; Helena Yu, MD

Medical Crossfire® – From Diagnostic Dilemmas to Potential Treatment Breakthroughs: Exploring Novel Targets for Extrapulmonary Neuroendocrine Carcinomas

In-Person + Virtual Event

Medical Crossfire® – From Diagnostic Dilemmas to Potential Treatment Breakthroughs: Exploring Novel Targets for Extrapulmonary Neuroendocrine Carcinomas

March 24, 2026

Addressing Unmet Needs in HER2+ Metastatic BTC

Addressing Unmet Needs in HER2+ Metastatic BTC

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Ghassan Abou-Alfa, MD, MBA

Community Practice Connections™: Tailored Treatment Approaches for Older Patients With Advanced HR+/HER2– Breast Cancer

Community Practice Connections™: Tailored Treatment Approaches for Older Patients With Advanced HR+/HER2– Breast Cancer

Hope S. Rugo, MD, FASCO; Neil M. Iyengar, MD; Komal Jhaveri, MD, FACP

Community Practice Connections™: Optimizing Treatment Outcomes and Preserving Fertility in Premenopausal HR+ Breast Cancer

Community Practice Connections™: Optimizing Treatment Outcomes and Preserving Fertility in Premenopausal HR+ Breast Cancer

Rebecca Shatsky, MD; Kelly McCann, MD, PhD; Michelle L. Taylor, ANP-BC

From Bench to Bedside: Paradigm Shifts in HER2+ Metastatic BTC Treatment

From Bench to Bedside: Paradigm Shifts in HER2+ Metastatic BTC Treatment

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Shubham Pant, MD, MBBS

Proactive Adverse Event Management for HER2+ BTC Treatments

Proactive Adverse Event Management for HER2+ BTC Treatments

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Rachna T. Shroff, MD, MS, FASCO

Community Practice Connections™: Empowering Interventional Radiologists in the Emerging Era of Oncolytic Immunotherapies for Melanoma

Community Practice Connections™: Empowering Interventional Radiologists in the Emerging Era of Oncolytic Immunotherapies for Melanoma

Yana G. Najjar, MD; Douglas B. Johnson, MD, MSCI; Rahul A. Sheth, MD, FSIR

A Case-Guided Discussion on Managing Immune Thrombocytopenic Purpura (ITP)

A Case-Guided Discussion on Managing Immune Thrombocytopenic Purpura (ITP)

Cindy Neunert, MD, MSCS; Hanny Al-Samkari, MD; Joseph Shatzel, MD, MCR

Cases & Conversations™: Transforming AML Care—Precision Strategies, Evolving Therapies, and Clinical Insights

Cases & Conversations™: Transforming AML Care—Precision Strategies, Evolving Therapies, and Clinical Insights

Gail J. Roboz, MD; Hagop Kantarjian, MD; Catherine Lai, MD, MPH; Amer Zeidan, MBBS, MHS

Evolving Treatment Strategies in Pancreatic Cancer: Current Standards, Emerging Targets, and the Role of Molecular Testing

Evolving Treatment Strategies in Pancreatic Cancer: Current Standards, Emerging Targets, and the Role of Molecular Testing

Eileen M. O’Reilly, MD; E. Gabriela Chiorean, MD, FASCO; Michael J. Pishvaian, MD, PhD; Brian Wolpin, MD, MPH

PER Tumor Board®: Applying Recent Advances to Transform the Treatment Paradigm in SCLC—Expert Perspectives on New Approvals and Emerging Strategies

PER Tumor Board®: Applying Recent Advances to Transform the Treatment Paradigm in SCLC—Expert Perspectives on New Approvals and Emerging Strategies

Jonathan W. Goldman, MD; Percy Lee, MD, FASTRO; Erminia Massarelli, MD, PhD, MS; Misty D. Shields, MD, PhD

GI Tumor Board—Applying Recent Advances in Biomarker Testing and Treatment in Metastatic Colorectal Cancer

GI Tumor Board—Applying Recent Advances in Biomarker Testing and Treatment in Metastatic Colorectal Cancer

John H. Strickler, MD; Stacey A. Cohen, MD; Aparna Parikh, MD; Kanwal P.S. Raghav, MBBS, MD

Medical Crossfire®: Precision Medicine in Glioma Treatment — Integration of Molecular Profiling to Inform Targeted Therapies

Medical Crossfire®: Precision Medicine in Glioma Treatment — Integration of Molecular Profiling to Inform Targeted Therapies

Vinay K. Puduvalli, MD; Manmeet Ahluwalia, MD, MBA; Stephen J. Bagley, MD, MSCE; Angela Waanders, MD, MPH, MS

Medical Crossfire®: Integrating Next-Generation Endocrine Targeting Therapies to Improve Outcomes for Patients With HR+/HER2- Breast Cancer

Medical Crossfire®: Integrating Next-Generation Endocrine Targeting Therapies to Improve Outcomes for Patients With HR+/HER2- Breast Cancer

William J. Gradishar, MD, FASCO, FACP; Laura Huppert, MD; Yuan Yuan, MD, PhD

$Cases and Conversations™: Sorting Through the Expanding Treatment Options for Patients with Relapsed/Refractory Multiple Myeloma$

Cases and Conversations™: Sorting Through the Expanding Treatment Options for Patients with Relapsed/Refractory Multiple Myeloma

C. Ola Landgren, MD, PhD; Mohamad Mohty, MD, PhD; Surbhi Sidana, MD

Trending on CancerNetwork

Exploring The Application of Artificial Intelligence in Radiology Scans

Navigating the Surgical Nuances of Inflammatory Breast Cancer and Phyllodes Tumors

The Weight of Finances on Cancer Care: An Oncologist’s Perspective

Indirect Comparison Supports Zanubrutinib Monotherapy in CLL/SLL Care

New ASCO Guideline Offers Recommendations for Smoldering Multiple Myeloma