Activity Overview
HER2-positive gastroesophageal adenocarcinoma demands precise, sequential decision-making—from complete molecular profiling at diagnosis through first-line selection, progression, rebiopsy, and later-line therapy. Persistent gaps include incomplete biomarker testing at baseline, selecting among evolving first-line regimens, recognizing and managing treatment-related diarrhea early enough to preserve dose intensity, identifying drug-related interstitial lung disease (ILD) promptly and initiating appropriate therapy, and communicating complex plans in language patients can act on. This SimulatED™ online, on-demand program follows a single patient case through physician-patient dialogues, interactive patient interviews, multiple-choice decision points, and expert commentary to translate evidence into practice. Learners confirm the molecular profile and select first-line therapy; recognize and manage grade 2 diarrhea; respond to disease progression with rebiopsy and second-line selection; manage treatment-related ILD; and choose third-line therapy. Immediate expert feedback at each decision point, paired with modeled teach-back and shared decision-making, builds both clinical judgment and communication skills.
Target Audience
This educational program is primarily directed toward medical oncologists, molecular pathologists, radiologists, gastroenterologists, advanced practice providers, and nurses who are involved in the treatment of patients with advanced or metastatic gastroesophageal cancers (GEAs).
Learning Objectives
Upon successful completion of this activity, you should be better prepared to:
- Apply best practices for HER2 biomarker testing in patients with GEA to guide timely, individualized treatment decisions
- Incorporate the latest evidence on HER2-directed therapies into individualized treatment plans for patients with advanced GEA
- Implement strategies to mitigate and manage AEs associated with HER2-targeted therapy
- Enhance coordination among oncology care teams to support informed decision-making, treatment access, and patient engagement when managing HER2+ GEA

Geoffrey Y. Ku, MD
Associate
Attending Physician
Gastrointestinal Oncology and Cellular Therapy Services, Department of Medicine
Memorial Sloan Kettering Cancer Center
New York, NY
Disclosures: Advisor, Consultant, Speaker, Honoraria Recipient: Astellas, AstraZeneca, Bayer, BeOne, Bristol Myers Squibb, Daiichi Sankyo, Gilead, I-Mab, Jazz, Merck, Oncolys, Pieris, Zymeworks; Grant/Research Funding: AstraZeneca, Bristol Myers Squibb, CARsgen, Daiichi Sankyo, I-Mab, Jazz, Merck, Oncolys, Triumvira, Zymeworks; Travel Reimbursement: DAVA Oncology, I-Mab

Sunnie S. Kim, MD
Associate Professor
Medical Oncologist
University of Colorado Cancer Center
Aurora, CO
Disclosures: Advisor, Consultant, Fee-for-Service Recipient: Amgen, AstraZeneca, BeOne, Gilead, Takeda; Grant/Research Funding: Merck
The staff of Physicians’ Education Resource®, LLC have no relevant financial relationships with ineligible companies.
PER® mitigated all COI for faculty, staff, and planners prior to the start of this activity by using a multistep process.
Off-Label Disclosure and Disclaimer
This accredited continuing education activity
was planned in accordance with the ACCME Standards for Integrity and
Independence to ensure balance, objectivity, independence, and scientific
rigor. Faculty were instructed to use generic names when possible and to base
recommendations on the best available evidence. Proprietary product names may
be referenced in clinical discussion for educational purposes only and do not
imply endorsement.
This activity may include discussion of
investigational, unapproved, or off‑label uses of
drugs or devices. Learners are advised to consult prescribing information for
products discussed. Content is provided for educational purposes only and is
not a substitute for the independent clinical judgment of a health care
professional. Learners are encouraged to critically evaluate the information
presented and apply their own clinical judgment.
The views expressed are those of the individual faculty members and do not necessarily reflect the views of the accredited provider or any entity providing commercial support.
This activity may have used AI-assisted tools to support educational development. All content was reviewed and approved by qualified faculty or planners. The accredited provider retains full responsibility for accuracy, balance, and independence.

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