5-Minute Journal Club: Current Treatment Approaches for Metastatic Triple-Negative Breast Cancer — Microlearning Activity 1

Faculty

Faculty

David W Cescon

MD, PhD

Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada

Medical Oncologist and Clinician Scientist

Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada

Associate Professor, Department of Medicine

TARGET AUDIENCE
This activity is intended for medical oncologists, hematology-oncology fellows and other healthcare providers involved in the treatment of breast cancer.

LEARNING OBJECTIVES

• Review published research supporting the use of antibody-drug conjugate (ADC) therapy in combination with anti-PD-1/PD-L1 antibodies for patients with metastatic triple-negative breast cancer (mTNBC), and use this information to make appropriate treatment recommendations.
• Assess recently presented clinical research findings with TROP2-directed ADC monotherapy as first-line treatment for mTNBC, and optimally incorporate these agents into patient care.
• Recognize the spectrum, frequency and severity of treatment-emergent adverse events associated with agents and approaches commonly used in the management of mTNBC, and develop strategies to monitor for, prevent and manage these complications.

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AMERICAN BOARD OF INTERNAL MEDICINE (ABIM) — MAINTENANCE OF CERTIFICATION (MOC)
Successful completion of this CME activity, which includes participation in the evaluation component and a post-test, enables the participant to earn up to 0.75 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 the 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, this program has been specifically designed for the following ABIM specialty: medical oncology.

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Please note, this program has been specifically designed for the following ABS practice area: complex general surgical oncology.

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HOW TO USE THIS CME ACTIVITY
To receive credit for this activity, 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.

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

Dr Cescon — Advisory Committees and Consulting Agreements: AstraZeneca Pharmaceuticals LP, Daiichi Sankyo Inc, Exact Sciences Corporation, GenomeRx, Gilead Sciences Inc, GSK, Knight Therapeutics Inc, Lilly, Merck, NeoGenomics, Novartis, Pfizer Inc, Roche Laboratories Inc, SAGADiagnostics; Contracted Research: AstraZeneca Pharmaceuticals LP, GenomeRx, Gilead Sciences Inc, Grail Inc GSK, Guardant Health, Knight Therapeutics Inc, Merck, NeoGenomics, Pear Bio, Pfizer Inc, ProteinQure, RayzeBio, Roche Laboratories Inc.

EDITOR — 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, Catalyst Pharmaceuticals Inc, 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, Revolution Medicines Inc, Rigel Pharmaceuticals Inc, R-Pharm US, Sanofi, Seagen Inc, Servier Pharmaceuticals LLC, SpringWorks Therapeutics Inc, Stemline Therapeutics Inc, Sumitomo Pharma America, Summit Therapeutics, Syndax Pharmaceuticals, Taiho Oncology Inc, Takeda Pharmaceuticals USA Inc, TerSera Therapeutics LLC, Tesaro, A GSK Company, and Verastem Inc.

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

This educational activity contains 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 grantor.

This activity is supported by an educational grant from Gilead Sciences Inc.

Release date: September 2026
Expiration date: September 2027

Bardia A et al. Trofuse-011: A phase 3, randomized, open-label study of sacituzumab tirumotecan with or without pembrolizumab vs treatment of physician’s choice for previously untreated locally recurrent unresectable or metastatic triple-negative breast cancer. SABCS 2025;Abstract PS5-08-18.

Barrios CH et al. ASCENT-03: Efficacy by biomarker subgroup with sacituzumab govitecan (SG) vs chemotherapy (chemo) in participants (pts) with previously untreated advanced triple-negative breast cancer (TNBC) who are not candidates for PD-(L)1 inhibitors (PD-[L]1i). ASCO 2026;Abstract 1014.

Bielčiková Z et al. Primary G-CSF prophylaxis in sacituzumab govitecan-treated mTNBC: Real-world evidence from a multinational cohort. San Antonio Breast Cancer Symposium 2025;Abstract PS1-05-12.

Cescon DW et al. First-line datopotamab deruxtecan (Dato-DXd) vs chemotherapy in patients with locally recurrent inoperable or metastatic triple-negative breast cancer (TNBC) for whom immunotherapy was not an option: Additional efficacy endpoints from the TROPION-Breast02 study. ASCO 2026;Abstract 1002.

Cortés JC et al. Primary results from ASCENT-03: A randomized phase III study of sacituzumab govitecan (SG) vs chemotherapy (chemo) in patients (pts) with previously untreated advanced triple-negative breast cancer (TNBC) who are unable to receive PD-(L)1 inhibitors (PD-[L]1i). ESMO 2025;Abstract LBA20.

Dent R et al. Datopotamab deruxtecan in patients with untreated, advanced triple-negative breast cancer (TROPION-Breast02): A randomised, open-label, international, phase III trial. Ann Oncol 2026;37(8):1066-80. Abstract

Dent R et al. First-line datopotamab deruxtecan (Dato-DXd) vs chemotherapy in patients with locally recurrent inoperable or metastatic triple-negative breast cancer (TNBC) for whom immunotherapy was not an option: Primary results from the randomised, phase 3 TROPION-Breast02 trial. ESMO 2025;Abstract LBA21.

Kalinsky K et al. Progression-free survival after next line of treatment (PFS2) and subsequent therapies (subs tx) in the ASCENT-04 study of participants (pts) with previously untreated PD-L1+ metastatic triple-negative breast cancer (mTNBC) treated with sacituzumab govitecan (SG) plus pembrolizumab (pembro) vs chemotherapy (chemo) plus pembro. ASCO 2026;Abstract LBA1000.

Nanda R et al. Effectiveness of sacituzumab govitecan and management of neutropenia in patients with mTNBC treated in real-world settings in the United States. ESMO Open 2025;10(6):105308.

Rugo H et al. US expert Delphi consensus on the prevention and management of stomatitis in patients treated with Dato-DXd. Support Care Cancer 2025;33(9):756.

Schmid P et al. TROPION-Breast05: A randomized phase III study of Dato-DXd with or without durvalumab versus chemotherapy plus pembrolizumab in patients with PD-L1-high locally recurrent inoperable or metastatic triple-negative breast cancer. Ther Adv Med Oncol 2025 Apr 17;17.

Yin Y et al. Sacituzumab tirumotecan in previously treated metastatic triple-negative breast cancer: A randomized phase 3 trial. Nat Med 2025;31(6):1969-75. Abstract