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Cases from the Community: Investigators Discuss the Optimal Role of Endocrine-Based and Other Strategies in the Management of HR-Positive Breast Cancer (Symposium Video Proceedings)
Released January 2026

Featuring perspectives from Dr Angela DeMichele, Dr Komal Jhaveri, Dr Erica Mayer, Dr Hope S Rugo and Dr Seth Wander. Published January 2026.

CE Information and Faculty Disclosures

  • TARGET AUDIENCE
    This program is intended for medical oncologists, breast surgeons, radiation oncologists and other healthcare professionals involved in the diagnosis and treatment of breast cancer.

    LEARNING OBJECTIVES

    • Evaluate available research establishing the utility of various genomic assays in personalizing adjuvant systemic therapy for hormone receptor (HR)-positive, HER2-negative breast cancer, and identify patients for whom testing would be clinically useful.
    • Consider available clinical trial findings with CDK4/6 inhibitors for localized HR-positive, HER2-negative breast cancer, and identify patients for whom adjuvant treatment with one of these agents may be appropriate.
    • Review available research documenting the correlation between the presence of various biomarkers (eg, PIK3CA/AKT1/PTEN alterations, ESR1 mutations) and response to specific therapies, and develop optimal testing algorithms for patients with HR-positive metastatic breast cancer (mBC).
    • Appraise published efficacy and safety data from randomized clinical trials evaluating CDK4/6 inhibitors for patients with HR-positive mBC to appropriately counsel patients regarding the optimal use of these agents.
    • Interrogate published research documenting the efficacy of oral selective estrogen receptor degraders for HR-positive, HER2-negative mBC progressing on endocrine therapy in combination with a CDK4/6 inhibitor in order to optimally integrate these agents into the care of appropriately selected patients.
    • Recognize the frequency of PIK3CA/AKT1/PTEN abnormalities in HR-positive mBC, and employ evidence-based approaches designed to target these aberrations for patients with newly diagnosed and relapsed/refractory disease.
    • Consider the spectrum, frequency and severity of adverse events associated with various endocrine-based treatment approaches for HR-positive breast cancer, and appreciate strategies to prevent, ameliorate and manage these side effects.
    • Recall the design of ongoing clinical trials evaluating novel endocrine-based strategies for HR-positive breast cancer, and appropriately counsel patients about availability and participation.

    ACCREDITATION STATEMENT
    Research To Practice is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

    CREDIT DESIGNATION STATEMENT
    Audio Program: Research To Practice designates this enduring material for a maximum of 2.75 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

    Video Program: Research To Practice designates this enduring material for a maximum of 2.25 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

    AMERICAN BOARD OF INTERNAL MEDICINE (ABIM) — MAINTENANCE OF CERTIFICATION (MOC)
    Successful completion of these CME activities, which includes participation in the evaluation components and post-tests, enables the participant to earn up to 2.75 (audio) and 2.25 (video) Medical Knowledge MOC points in the American Board of Internal Medicine’s (ABIM) Maintenance of Certification (MOC) program. Participants will earn MOC points equivalent to the amount of CME credits claimed for each activity. It is the CME activity provider’s responsibility to submit participant completion information to ACCME for the purpose of granting ABIM MOC credit.

    Please note, these programs have been specifically designed for the following ABIM specialty: medical oncology.

    AMERICAN BOARD OF SURGERY (ABS) — CONTINUOUS CERTIFICATION (CC)
    Successful completion of these CME activities, which includes participation in the evaluation components and post-tests, enables the learner to earn credit toward the CME and Self-Assessment requirement(s) of the American Board of Surgery’s Continuous Certification program. It is the CME activity provider's responsibility to submit participant completion information to ACCME for the purpose of granting ABS credit.

    Please note, these programs have been specifically designed for the following ABS practice area: complex general surgical oncology.

    PRIVACY POLICY
    Personal information and data sharing: Research To Practice aggregates deidentified user data for program-use analysis, program development, activity planning and site improvement. We may provide aggregate and deidentified data to third parties, including commercial supporters. We do not share or sell personally identifiable information to any unaffiliated third parties or commercial supporters. Please see our privacy policy at ResearchToPractice.com/Privacy-Policy for more information.

    HOW TO USE THIS CME ACTIVITY
    Audio Program: This CME activity consists of an audio component. To receive credit, the participant should review the CME information, listen to the MP3s, review the downloadable slide set, complete the post-test with a score of 80% or better and fill out the evaluation located at ResearchToPractice.com/SanAntonioHRPosBC25/CME. The corresponding video program is available as an alternative at ResearchToPractice.com/SanAntonioHRPosBC25/Video.

    Video Program: This CME activity consists of a video component. To receive credit, the participant should review the CME information, watch the video, complete the post-test with a score of 80% or better and fill out the evaluation located at ResearchToPractice.com/SanAntonioHRPosBC25/Video/CME. The corresponding audio program is available as an alternative at ResearchToPractice.com/SanAntonioHRPosBC25.

    CONTENT VALIDATION AND DISCLOSURES
    Research To Practice (RTP) is committed to providing its participants with high-quality, unbiased and state-of-the-art education and adheres to the ACCME’s Standards for Integrity and Independence in Accredited Continuing Education. Any individuals in a position to control the content of an accredited continuing education activity, including faculty, planners, reviewers and others, are required to disclose all relevant financial relationships with ineligible entities (commercial interests). All relevant conflicts of interest have been mitigated prior to the commencement of this activity. In addition, all activity content is reviewed by RTP scientific staff and an external, independent physician reviewer for fair balance, scientific objectivity of studies referenced and patient care recommendations.

    FACULTY — The following faculty reported relevant financial relationships with ineligible entities:

    Angela DeMichele, MD, MSCE
    Mariann T and Robert J MacDonald Professor in Breast Cancer
    Director, Clinical/Translational Research, Solid Tumor Oncology, Hematology/Oncology Division
    Co-Leader, Breast Cancer Program
    Abramson Cancer Center
    Co-Director, 2-PREVENT Breast Cancer Translational Center of Excellence
    Senior Scholar, Center for Clinical Epidemiology and Biostatistics
    Perelman School of Medicine
    University of Pennsylvania
    Philadelphia, Pennsylvania

    Consulting Agreements: Pfizer Inc; Contracted Research: Genentech, a member of the Roche Group, NeoGenomics, Novartis, Pfizer Inc.

    Komal Jhaveri, MD, FACP, FASCO
    Patricia and James Cayne Chair for Junior Faculty
    Associate Attending Physician
    Breast Medicine Service and Early Drug Development Service
    Section Head, Endocrine Therapy Research Program
    Clinical Director, Early Drug Development Service
    Department of Medicine
    Memorial Sloan Kettering Cancer Center
    Associate Professor of Medicine
    Weill Cornell College of Medicine
    New York, New York

    Consultant/Advisory Board Roles: Arvinas, AstraZeneca Pharmaceuticals LP, Bicycle Therapeutics, Blueprint Medicines, Daiichi Sankyo Inc, Eisai Inc, Genentech, a member of the Roche Group, Gilead Sciences Inc, Halda Therapeutics, Loxo Oncology Inc, a wholly owned subsidiary of Eli Lilly & Company, Menarini Group, Merck, Novartis, Olema Oncology, Pfizer Inc, RayzeBio Inc, Scorpion Therapeutics, Stemline Therapeutics Inc, Zymeworks Inc; Research Funding Support to the Institution: AstraZeneca Pharmaceuticals LP, Blueprint Medicines, Eisai Inc, Genentech, a member of the Roche Group, Gilead Sciences Inc, Loxo Oncology Inc, a wholly owned subsidiary of Eli Lilly & Company, Merck, Novartis, Pfizer Inc, Puma Biotechnology Inc, RayzeBio Inc, Scorpion Therapeutics, Zymeworks Inc.

    Erica Mayer, MD, MPH, FASCO
    Director of Breast Cancer Clinical Research
    Breast Oncology Center
    Dana-Farber Cancer Institute
    Associate Professor of Medicine
    Harvard Medical School
    Boston, Massachusetts

    Consulting Agreements: Aktis Oncology, AstraZeneca Pharmaceuticals LP, Genentech, a member of the Roche Group, Lilly, Novartis.

    Hope S Rugo, MD
    Director, Women’s Cancers Program
    Division Chief, Breast Medical Oncology
    Professor, Department of Medical Oncology and Therapeutics Research
    City of Hope Comprehensive Cancer Center
    Duarte, California
    Professor Emeritus, UCSF

    Advisory Committees and Consulting Agreements: BioNTech SE, Bristol Myers Squibb, Helsinn Therapeutics (US) Inc, Napo Pharmaceuticals; Contracted Research (Funding to City of Hope): Bicycle Therapeutics, Genentech, a member of the Roche Group, Stemline Therapeutics Inc; Contracted Research (Funding to Prior Institution, UCSF): Ambrx Inc, AstraZeneca Pharmaceuticals LP, Daiichi Sankyo Inc, Genentech, a member of the Roche Group, Gilead Sciences Inc, Lilly, Merck, Novartis, Pfizer Inc, Stemline Therapeutics Inc.

    Seth Wander, MD, PhD
    Director of Precision Medicine
    Termeer Center for Targeted Therapies
    Director of Translational Research
    Breast Oncology Program
    Massachusetts General Hospital
    Assistant Professor of Medicine
    Harvard Medical School
    Boston, Massachusetts

    Consulting Agreements: Arvinas, AstraZeneca Pharmaceuticals LP, Biotheranostics Inc, A Hologic Company, Biovica International AB, Foundation Medicine, Genentech, a member of the Roche Group, Gilead Sciences Inc, Lilly, Menarini Group, Novartis, Pfizer Inc, Puma Biotechnology Inc, Regor Therapeutics, Stemline Therapeutics Inc, Veracyte Inc; Contracted Research: Arvinas, Genentech, a member of the Roche Group, Lilly, Menarini Group, Nuvation Bio Inc, Pfizer Inc, Phoenix Molecular Designs, Puma Biotechnology Inc, Regor Therapeutics, Sermonix Pharmaceuticals, Stemline Therapeutics Inc.

    MODERATOR — Dr Love is president and CEO of Research To Practice. Research To Practice receives funds in the form of educational grants to develop CME activities from the following companies: Aadi Bioscience, AbbVie Inc, ADC Therapeutics, Agendia Inc, Alexion Pharmaceuticals, Amgen Inc, Array BioPharma Inc, a subsidiary of Pfizer Inc, Arvinas, Astellas, AstraZeneca Pharmaceuticals LP, Aveo Pharmaceuticals, Bayer HealthCare Pharmaceuticals, BeOne, Biotheranostics Inc, A Hologic Company, Black Diamond Therapeutics Inc, Blueprint Medicines, Boehringer Ingelheim Pharmaceuticals Inc, Bristol Myers Squibb, Celcuity, Clovis Oncology, Coherus BioSciences, Corcept Therapeutics Inc, CTI BioPharma, a Sobi Company, Daiichi Sankyo Inc, Eisai Inc, Elevation Oncology Inc, Exact Sciences Corporation, Exelixis Inc, Genentech, a member of the Roche Group, Genmab US Inc, Geron Corporation, Gilead Sciences Inc, GSK, Helsinn Therapeutics (US) Inc, ImmunoGen Inc, Incyte Corporation, Ipsen Biopharmaceuticals Inc, Jazz Pharmaceuticals Inc, Johnson & Johnson, Karyopharm Therapeutics, Kite, A Gilead Company, Kura Oncology, Legend Biotech, Lilly, MEI Pharma Inc, Merck, Mersana Therapeutics Inc, Mirati Therapeutics Inc, Mural Oncology Inc, Natera Inc, Novartis, Novartis Pharmaceuticals Corporation on behalf of Advanced Accelerator Applications, Novocure Inc, Nuvalent, Nuvation Bio Inc, Pfizer Inc, Pharmacyclics LLC, an AbbVie Company, Puma Biotechnology Inc, Regeneron Pharmaceuticals Inc, Rigel Pharmaceuticals Inc, R-Pharm US, Sanofi, Seagen Inc, Servier Pharmaceuticals LLC, SpringWorks Therapeutics Inc, Stemline Therapeutics Inc, Sumitomo Pharma America, Syndax Pharmaceuticals, Taiho Oncology Inc, Takeda Pharmaceuticals USA Inc, TerSera Therapeutics LLC, and Tesaro, A GSK Company.

    RESEARCH TO PRACTICE CME PLANNING COMMITTEE MEMBERS, STAFF AND REVIEWERS — Planners, scientific staff and independent reviewers for Research To Practice have no relevant conflicts of interest to disclose.

    These educational activities contain discussion of published and/or investigational uses of agents that are not indicated by the Food and Drug Administration. Research To Practice does not recommend the use of any agent outside of the labeled indications. Please refer to the official prescribing information for each product for discussion of approved indications, contraindications and warnings. The opinions expressed are those of the presenters and are not to be construed as those of the publisher or grantors.

    These activities are supported by educational grants from Agendia Inc, Biotheranostics Inc, A Hologic Company, Celcuity, Exact Sciences Corporation, Genentech, a member of the Roche Group, Lilly, and Stemline Therapeutics Inc.

    Release date: January 2026
    Expiration date: January 2027

    After completing the post-test, learners may download and review the answers here in order to identify further areas of study.

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