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

Your AI-Trained Oncology Knowledge Connection!

Opinion|Videos|January 23, 2025

HER2 Key Differences and Current Approaches to Biomarker Testing

Author(s)Misako Nagasaka, MD, PhD

Panelist discusses how HER2 testing evaluates protein overexpression, gene amplification, and mutations. Although breast and gastric cancers typically show overexpression/amplification, other tumors more commonly harbor mutations.

Episodes in this series

EP. 1 Introduction to HER2-Directed Tumor-Agnostic Approaches

EP. 1 Introduction to HER2-Directed Tumor-Agnostic Approaches

EP. 2 HER2 Key Differences and Current Approaches to Biomarker Testing

EP. 2 HER2 Key Differences and Current Approaches to Biomarker Testing

EP. 3 Updates and Clinical Implications of DESTINY-Lung02 and DESTINY-Lung03 Trials

EP. 3 Updates and Clinical Implications of DESTINY-Lung02 and DESTINY-Lung03 Trials

EP. 4 Review of Current Landscape of HER2-Directed Tumor-Agnostic Therapies

EP. 4 Review of Current Landscape of HER2-Directed Tumor-Agnostic Therapies

EP. 5 Influence of DESTINY-PanTumor02 Trials on Trastuzumab Deruxtecan Usage

EP. 5 Influence of DESTINY-PanTumor02 Trials on Trastuzumab Deruxtecan Usage

EP. 6 Future of HER2-Directed Tumor-Agnostic Therapies

EP. 6 Future of HER2-Directed Tumor-Agnostic Therapies

Video content above is prompted by the following:

What are the key differences between HER2 overexpression, amplification, and mutations across tumor types? How do these differences affect treatment selection?
What is your current approach to biomarker testing for HER2 alterations across different tumor types?

Newsletter

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

Latest CME

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 | Texas Society of Clinical Oncology

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 | Texas Society of Clinical Oncology

Marla D. Lipsyc-Sharf, MD; Parth Khade, MD

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 | Rocky Mountain 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 | Rocky Mountain Oncology Society

Seth A. Wander, MD, PhD; Kara M. Schenk, MD

22nd Annual International Symposium on Melanoma and Other Cutaneous Malignancies®

22nd Annual International Symposium on Melanoma and Other Cutaneous Malignancies®

Omid Hamid, MD; Sapna Patel, MD

Oncology Town Hall - Translating the Latest Updates Into the Care of Patients With AML in Community Practices

Oncology Town Hall - Translating the Latest Updates Into the Care of Patients With AML in Community Practices

April 9, 2026

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 | North Carolina Oncology Association

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 | North Carolina Oncology Association

Marla D. Lipsyc-Sharf, MD; Yan Ji, MD

11th Annual School of Gastrointestinal Oncology® (SOGO®)

In-Person + Virtual Event

11th Annual School of Gastrointestinal Oncology® (SOGO®)

April 11, 2026

Tumor Board: Clinical Integration of Molecular Profiling in Glioma - Transforming the Use of Targeted Therapy

In-Person + Virtual Event

Tumor Board: Clinical Integration of Molecular Profiling in Glioma - Transforming the Use of Targeted Therapy

April 20, 2026

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 | New Mexico Society of Clinical Oncology

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 | New Mexico Society of Clinical Oncology

Marla D. Lipsyc-Sharf, MD; Kimberly Ku, MD

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

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

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

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®: 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

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

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

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®: 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

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

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

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

Evaluating the Latest Data and Ongoing Trials for Novel ADC Approaches in TNBC

Evaluating the Latest Data and Ongoing Trials for Novel ADC Approaches in TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD

Breaking Down the Rationale for Targeting TROP2 in TNBC

Breaking Down the Rationale for Targeting TROP2 in TNBC

Filipa Lynce, MD; Rita Nanda, MD

Establishing the Rationale for ADC and ICI Combinations in TNBC

Establishing the Rationale for ADC and ICI Combinations in TNBC

Virginia Kaklamani, MD, DSc; Tiffany A. Traina, MD, FASCO

Expert Guidance on Frequently Asked Questions Regarding the Use of ADCs in TNBC

Expert Guidance on Frequently Asked Questions Regarding the Use of ADCs in TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Virginia Kaklamani, MD, DSc

Dissecting Clinical Trial and Real-World Data for ADCs in TNBC

Dissecting Clinical Trial and Real-World Data for ADCs in TNBC

Filipa Lynce, MD; Rita Nanda, MD

Breaking Down the Latest Clinical Data for First-line Maintenance and R/R SCLC

Breaking Down the Latest Clinical Data for First-line Maintenance and R/R SCLC

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Hossein Borghaei, DO, MS

Cross-Disease Integration of Immunotherapy Innovations

Cross-Disease Integration of Immunotherapy Innovations

Ghassan Abou-Alfa, MD, MBA; Laura Williams Goff, MD, MSCI, MMHC, FASCO; Arndt Vogel, MD, PhD

Optimizing Treatment for Biliary Tract Cancers

Optimizing Treatment for Biliary Tract Cancers

Ghassan Abou-Alfa, MD, MBA; Laura Williams Goff, MD, MSCI, MMHC, FASCO; Arndt Vogel, MD, PhD

Broadening the Frontline—Studies Informing the Use of Immunotherapy in Hepatocellular Carcinoma

Broadening the Frontline—Studies Informing the Use of Immunotherapy in Hepatocellular Carcinoma

Ghassan Abou-Alfa, MD, MBA; Laura Williams Goff, MD, MSCI, MMHC, FASCO; Arndt Vogel, MD, PhD

PER Resource Center: Integrating Novel Approaches in TNBC – New Avenues for TROP2-Targeting ADCs and Beyond – Nursing

PER Resource Center: Integrating Novel Approaches in TNBC – New Avenues for TROP2-Targeting ADCs and Beyond – Nursing

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Virginia Kaklamani, MD, DSc; Filipa Lynce, MD; Rita Nanda, MD; Tiffany A. Traina, MD, FASCO

Show Me the Data®: New and Emerging Roles for Oral SERD Therapy in the Treatment of ER+/HER2– Breast Cancer

Show Me the Data®: New and Emerging Roles for Oral SERD Therapy in the Treatment of ER+/HER2– Breast Cancer

Ana C. Garrido-Castro, MD; Pedram Razavi, MD, PhD

Practical Considerations and Future Directions for New Treatment Strategies in SCLC

Practical Considerations and Future Directions for New Treatment Strategies in SCLC

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Misty D. Shields, MD, PhD

Expert Roundtable and Panel Discussions: Current and Future Landscape of TNBC

Expert Roundtable and Panel Discussions: Current and Future Landscape of TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Tiffany A. Traina, MD, FASCO

Medical Crossfire® in Adjunctive Testing: Charting a New Course in Prostate Cancer Risk Assessment

Medical Crossfire® in Adjunctive Testing: Charting a New Course in Prostate Cancer Risk Assessment

Jason Hafron, MD; Aaron D. Berger, MD; Arpeet Shah, MD

Ready for Radioligand Therapy? Patient Selection and Sequencing Simplified

Ready for Radioligand Therapy? Patient Selection and Sequencing Simplified

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Scott T. Tagawa, MD, MS, FACP, FASCO

Working Together: Overcoming Barriers to Optimize Outcomes in Patients Treated With Radioligand Therapy Through Multidisciplinary Care

Working Together: Overcoming Barriers to Optimize Outcomes in Patients Treated With Radioligand Therapy Through Multidisciplinary Care

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Nerina McDonald, MSPAS, PA-C; Scott T. Tagawa, MD, MS, FACP, FASCO

BURST CME™ Resource Center: Integrating Novel PSMA-Directed Radioligand Approaches for Diagnosis and Management of Prostate Cancer

BURST CME™ Resource Center: Integrating Novel PSMA-Directed Radioligand Approaches for Diagnosis and Management of Prostate Cancer

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Nerina McDonald, MSPAS, PA-C; Scott T. Tagawa, MD, MS, FACP, FASCO

Radioligand Therapy 101: The Science Behind the Strategy

Radioligand Therapy 101: The Science Behind the Strategy

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Scott T. Tagawa, MD, MS, FACP, FASCO

Imaging Matters: Decoding PSMA PET for Better Decision-Making

Imaging Matters: Decoding PSMA PET for Better Decision-Making

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Scott T. Tagawa, MD, MS, FACP, FASCO

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

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

Navigating Treatment Gaps in SCLC: Relapse, Resistance, and Need for New Options

Navigating Treatment Gaps in SCLC: Relapse, Resistance, and Need for New Options

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Giannis Mountzios ΜD, PhD

Trending on CancerNetwork

Low-Dose CT Screening Reduces Lung Cancer–Specific Mortality

Osimertinib Combo Boosts PFS in EGFR/TP53+ NSCLC Trial

Novel Small Molecule Earns FDA Fast Track Designation in ALK+ NSCLC

FDA Approves Companion Diagnostic for Pembrolizumab in Esophageal/GEJ Carcinoma

Durvalumab/SBRT May Limit Tumor Progression in Early-Stage NSCLC