|Videos|May 8, 2014

HER2 Testing and the Utility of Ki67

Sunil Verma, MD, MSEd, FRCPC, associate professor, University of Toronto, chair, Breast Medical Oncology, Sunnybrook Odette Cancer Centre, comments on HER2 testing and the utility of Ki67.

Clinical Pearls

Recent ASCO-CAP guidelines lay out what is considered to be HER2 positive, negative, or equivocal.
HER2 testing should be done in high volume, well-equipped, quality-assured pathology centers.
The role for Ki67 as a prognostic marker is well-studied, though significant issues remain regarding its predictive utility and validity.
These issues must be addressed before Ki67 is used routinely in clinical practice.

Sunil Verma, MD, MSEd, FRCPC, associate professor, University of Toronto, chair, Breast Medical Oncology, Sunnybrook Odette Cancer Centre, comments on HER2 testing and the utility of Ki67.

Stay up to date on practice-changing data in community practice.

Subscribe Now!

Latest CME

Multimedia

Community Practice Connections™: Community Oncologists’ Role in Selecting Optimal Oral SERD Treatment for HR+/HER2- Breast Cancer

Virginia Kaklamani, MD, DSc; William J Gradishar, MD, FASCO, FACP

Multimedia

Community Practice Connections™: Case Discussions in TNBC… Navigating the Latest Advances and Impact of Disparities in Care

Tiffany A. Traina, MD, FASCO; Demetria Smith-Graziani, MD, MPH

Video

Medical Crossfire®: Improving Survival in HR-Positive HER2-Negative Metastatic Breast Cancer – Advances in Selective Estrogen Receptor Targeting Therapies

Aditya Bardia, MD, MPH; Heather McArthur, MD, MPH; Sonya Reid, MD, MPH

In-Person Event

Inaugural Brain & Spine Metastases Conference: Evolving Practice and Emerging Therapies

January 22, 2026

In-Person Event

2nd Annual Hawaii Cancer Conference

January 24-25, 2026

Multimedia

42nd Annual CFS: Chemotherapy Foundation Symposium®: Innovative Cancer Therapy for Tomorrow

Benjamin P. Levy, MD; John O. Mascarenhas, MD; Tiffany A. Traina, MD, FASCO; Cathy Eng, MD, FACP, FASCO; John P. Leonard, MD

Video

The Inaugural Hawaii Breast Cancer: A Multidisciplinary Case-Based Conference

Hope S. Rugo, MD, FASCO; Naoto T. Ueno, MD, PhD

In-Person Event

43rd Annual Miami Breast Cancer Conference®

March 5-8, 2026

Video

Medical Crossfire®: Translating Evidence to Clinical Practice in Early-Stage HR+, HER2– Breast Cancer

Joyce O’Shaughnessy, MD; William J. Gradishar, MD, FASCO, FACP; Heather McArthur, MD, MPH

Video

Updates and Innovations in Nonopioid Pain Management Strategies for Breast Cancer Patients Postsurgical Intervention

Patrick I. Borgen, MD; Joshua Feinberg, MD; Gary Schwartz, MD, FASA

Multimedia

Shaping Surgical Pathways: Revolutionizing Breast Cancer Care With Genetic Testing and Targeted Treatment

Patrick I. Borgen, MD; E. Shelley Hwang, MD, MPH; Mark E. Robson, MD

Multimedia

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

Multimedia

Community Practice Connections™: Navigating the Impact of HER2, HER3 and TROP2 from Early Stage to Advanced Breast Cancer Care

Hope S. Rugo, MD, FASCO; Sara Hurvitz, MD, FACP; Jennifer Litton, MD, MHCM; Heather McArthur, MD, MPH

Multimedia

Community Practice Connections™: Exploring Emerging Next-Generation Endocrine Therapies in ER+/HER2- Breast Cancer – Evaluating the Potential of Future of Treatment

Heather McArthur, MD, MPH; Komal Jhaveri, MD, FACP; Sara Tolaney, MD, MPH; Seth A. Wander, MD, PhD

Multimedia

Community Practice Connections™: Translating Evidence to Clinical Practice in Early-Stage HR+, HER2- Breast Cancer

Joyce O’Shaughnessy, MD; William Gradishar, MD, FASCO, FACP; Heather McArthur, MD, MPH; Eleni Anastasia Tousimis, MD, MBA, FACS

Multimedia

Innovations in HR+/HER2– Metastatic Breast Cancer: Advancing Care Through PROTAC ER Degradation

Rita Nanda, MD; William Gradishar, MD, FASCO, FACP; Komal Jhaveri, MD, FACP; Kevin Kalinsky, MD, MS

Multimedia

Clinical Case Vignette Series™: 42nd Annual Miami Breast Cancer Conference®

Reshma Jagsi, MD, DPhil; Kevin Kalinsky, MD, MS; Hope S. Rugo, MD, FASCO; Alastair Thompson, MD, MBChB, BSc (Hons), FRCS (Ed), FACS

Video

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

Video

Breast Cancer Tumor Board®: Advancing Care in Metastatic Breast Cancer - The Evolving Role of Antibody-Drug Conjugates

Aditya Bardia, MD, MPH, FASCO; Joyce O’Shaughnessy, MD; Hope S. Rugo, MD; Paolo Tarantino, MD

In-Person Event

25th Annual International Congress on the Future of Breast Cancer® East

July 10-11, 2026

In-Person Event

25th Annual International Congress on the Future of Breast Cancer® West

July 17-18, 2026

Video

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

Multimedia

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

Filipa Lynce, MD; Rita Nanda, MD

Multimedia

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

Multimedia

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

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

Multimedia

Establishing the Rationale for ADC and ICI Combinations in TNBC

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

Multimedia

Breaking Down the Rationale for Targeting TROP2 in TNBC

Filipa Lynce, MD; Rita Nanda, MD

Video

24th Annual International Congress on the Future of Breast Cancer® East

Joyce O’Shaughnessy, MD

Multimedia

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

Video

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

Multimedia

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

Video

(CME Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes

Michelle L. Taylor, ANP-BC; Emely Alfaro, DNP, RN, CNS, OCN; Paige Griffith, CRNP; Beth Sandy, MSN, CRNP, FAPO

In-Person Event

24th Annual School of Breast Oncology

November 5-7, 2026

Video

9th Annual School of Nursing Oncology™

Beth Faiman, PhD, MSN, APN-BC, BMTCN, AOCN, FAAN, FAPO; Beth Sandy, MSN, CRNP, FAPO; Lindsay Adkins, MSN, FNP-BC, BMTCN; Jeneth Aquino, DNP, FNP-BC; Casey Gormley, MSN, FNP-C, AOCNP; Heather J. Jackson, PhD, FNP-BC; Kelsey Martin, AG-ACNP-BC, AOCNP; Nerina T. McDonald, PA-C; Lauren Verity Moore, DNP, MSN, AGACNP-BC; Faith A. Mutale, DNP, CRNP; Tiffany Richards, PhD, ANP-BC, AOCNP; Emily Skotte, DNP, MSN, ACNP-BC; Leslie Smith, DNP, RN, APRN-CNS, AOCNS, BMTCN; Saneese Stephen, PA-C, MPAS; Sara M. Tinsley-Vance, PhD, APRN, AOCN

Video

Hot Seat: How Experts Are Integrating the Latest Practice-Changing Data Into Their Breast Cancer Clinics

Tiffany A. Traina, MD, FASCO; Nour Abuhadra, MD; Joshua Z. Drago, MD, MS; Ruth O’Regan, MD; Vered Stearns, MD, FASCO; Neil Vasan, MD, PhD; Anna Weiss, MD

Video

(Pharmacist Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes

Michelle L. Taylor, ANP-BC; Emely Alfaro, DNP, RN, CNS, OCN; Paige Griffith, CRNP; Beth Sandy, MSN, CRNP, FAPO

School of Breast Oncology® (SOBO) Slide & Lecture Library

HER2 Testing and the Utility of Ki67

Clinical Pearls

Newsletter

Related Content

Real-World Pola-R-CHP vs R-CHOP Effectiveness in Older DLBCL Patients

Imlunestrant Regimens Sustain Efficacy Benefit in ER+/HER2– Breast Cancer

Giredestrant/Everolimus Improves PFS Across Subgroups After CDK4/6i in ER+/HER2– Breast Cancer

Gedatolisib Improves PFS in HR+/HER2-/PIK3CA-WT Advanced Breast Cancer

PALLAS Trial: Adjuvant Palbociclib OS and Post-Recurrence Outcomes

Latest CME

Community Practice Connections™: Community Oncologists’ Role in Selecting Optimal Oral SERD Treatment for HR+/HER2- Breast Cancer

Community Practice Connections™: Case Discussions in TNBC… Navigating the Latest Advances and Impact of Disparities in Care

Medical Crossfire®: Improving Survival in HR-Positive HER2-Negative Metastatic Breast Cancer – Advances in Selective Estrogen Receptor Targeting Therapies

Inaugural Brain & Spine Metastases Conference: Evolving Practice and Emerging Therapies

2nd Annual Hawaii Cancer Conference

42nd Annual CFS: Chemotherapy Foundation Symposium®: Innovative Cancer Therapy for Tomorrow

The Inaugural Hawaii Breast Cancer: A Multidisciplinary Case-Based Conference

43rd Annual Miami Breast Cancer Conference®

Medical Crossfire®: Translating Evidence to Clinical Practice in Early-Stage HR+, HER2– Breast Cancer

Updates and Innovations in Nonopioid Pain Management Strategies for Breast Cancer Patients Postsurgical Intervention

Shaping Surgical Pathways: Revolutionizing Breast Cancer Care With Genetic Testing and Targeted Treatment

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

Community Practice Connections™: Navigating the Impact of HER2, HER3 and TROP2 from Early Stage to Advanced Breast Cancer Care

Community Practice Connections™: Exploring Emerging Next-Generation Endocrine Therapies in ER+/HER2- Breast Cancer – Evaluating the Potential of Future of Treatment

Community Practice Connections™: Translating Evidence to Clinical Practice in Early-Stage HR+, HER2- Breast Cancer

Innovations in HR+/HER2– Metastatic Breast Cancer: Advancing Care Through PROTAC ER Degradation

Clinical Case Vignette Series™: 42nd Annual Miami Breast Cancer Conference®

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

Breast Cancer Tumor Board®: Advancing Care in Metastatic Breast Cancer - The Evolving Role of Antibody-Drug Conjugates

25th Annual International Congress on the Future of Breast Cancer® East

25th Annual International Congress on the Future of Breast Cancer® West

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

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

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

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

Establishing the Rationale for ADC and ICI Combinations in TNBC

Breaking Down the Rationale for Targeting TROP2 in TNBC

24th Annual International Congress on the Future of Breast Cancer® East

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

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

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

(CME Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes

24th Annual School of Breast Oncology

9th Annual School of Nursing Oncology™

Hot Seat: How Experts Are Integrating the Latest Practice-Changing Data Into Their Breast Cancer Clinics

(Pharmacist Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes

School of Breast Oncology® (SOBO) Slide & Lecture Library

Trending on Targeted Oncology - Immunotherapy, Biomarkers, and Cancer Pathways

Gedatolisib Improves PFS in HR+/HER2-/PIK3CA-WT Advanced Breast Cancer

FDA Approves Niraparib/Abiraterone Combo for BRCA2-Mutated mCSPC

Alpelisib/Fulvestrant Improves PFS in Post-CDK4/6 HR+/HER2- Breast Cancer

Real-World Pola-R-CHP vs R-CHOP Effectiveness in Older DLBCL Patients

Phase 3 Trial of Olverembatinib Cleared By FDA, EMA in Ph+ALL