HER2-low and HER2-zero in Breast Cancer Between Prognosis, Prediction and Entity

BUFFALO, NY- July 16, 2024 – A new #editorial paper was #published in Oncotarget's Volume 15 on June 20, 2024, entitled, “HER2-low and HER2-zero in breast cancer between prognosis, prediction and entity.” In this new editorial, researchers Marcus Schmidt, Hans-Anton Lehr, and Katrin Almstedt from the University Medical Center of Johannes Gutenberg University discuss HER2 in breast cancer. HER2 is a well-established prognostic and predictive factor in breast cancer, which is associated with a poor prognosis but also offers the chance of improved survival when treated with targeted therapies based on the monoclonal antibody trastuzumab, both in advanced (hazard ratio (HR) 0.82, 95% confidence interval (CI) 0.71 to 0.94, P = 0.004) and in early (HR 0.66, 95% CI 0.57 to 0.77, P < 0.00001) stages. The American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) defines HER2-positivity as either 3+ by immunohistochemistry (IHC) or 2+ with amplification by in situ hybridization (ISH). Yet, the vast majority of breast tumors are considered HER2- negative (IHC 0 or 1+ or 2+ without amplification) by these criteria, and it has until recently been accepted that HER2-negative tumors do not benefit from trastuzumab based therapy. “Now, results of randomized trials with trastuzumab-based antibody-drug conjugates (ADCs) such as trastuzumab deruxtecan (T-DXd) have fundamentally challenged this long-held view.” DOI - https://doi.org/10.18632/oncotarget.28598 Correspondence to - Marcus Schmidt - marcus.schmidt@unimedizin-mainz.de Video short - https://www.youtube.com/watch?v=4ROlLZo82uY Sign up for free Altmetric alerts about this article - https://oncotarget.altmetric.com/details/email_updates?id=10.18632%2Foncotarget.28598 Subscribe for free publication alerts from Oncotarget - https://www.oncotarget.com/subscribe/ Keywords - cancer, breast cancer, HER2, HER2-low, prognostic, predictive About Oncotarget Oncotarget (a primarily oncology-focused, peer-reviewed, open access journal) aims to maximize research impact through insightful peer-review; eliminate borders between specialties by linking different fields of oncology, cancer research and biomedical sciences; and foster application of basic and clinical science. Oncotarget is indexed and archived by PubMed/Medline, PubMed Central, Scopus, EMBASE, META (Chan Zuckerberg Initiative) (2018-2022), and Dimensions (Digital Science). To learn more about Oncotarget, please visit https://www.oncotarget.com and connect with us: Facebook - https://www.facebook.com/Oncotarget/ X - https://twitter.com/oncotarget Instagram - https://www.instagram.com/oncotargetjrnl/ YouTube - https://www.youtube.com/@OncotargetJournal LinkedIn - https://www.linkedin.com/company/oncotarget Pinterest - https://www.pinterest.com/oncotarget/ Reddit - https://www.reddit.com/user/Oncotarget/ Spotify - https://open.spotify.com/show/0gRwT6BqYWJzxzmjPJwtVh MEDIA@IMPACTJOURNALS.COM