HER2+ Breast Cancer

Stephanie L. Graff, MD, discusses the evaluation of trastuzumab deruxtecan in patients with HER2-zero metastatic breast cancer in the ongoing, phase 2 DESTINY-Breast06 trial.

The Scottish Medicines Consortium has accepted fam-trastuzumab deruxtecan-nxki as a treatment option for adult patients with HER2-positive unresectable or metastatic breast cancer who have received 1 prior anti–HER2-based therapy.

Joyce A. O’Shaughnessy, MD, discusses real-world data for the use of the phase 2 HER2CLIMB trial regimen of tucatinib plus trastuzumab and capecitabine in HER2-positive breast cancer.

Cynthia X. Ma, MD, PhD, discusses updates in triple-negative breast cancer treatment, recent data on HER2-targeted agents in metastatic and early-stage HER2-positive breast cancer, and the role of CDK4/6 inhibitors and oral selective estrogen receptor degraders in hormone receptor–positive disease.

Jennifer M. Matro, MD, discusses the real-world implications and uptake of the HER2CLIMB regimen, other trials investigating tucatinib-based regimens in HER2-positive metastatic breast cancer, and how approaches differ between early-stage and metastatic hormone receptor–positive/HER2-negative breast cancer.

Mary Anne Fenton, MD, discusses findings from the phase 3 DESTINY-Breast03 trial in patients with metastatic, HER2-positive breast cancer.

Stephanie L. Graff, MD, discusses data from an exploratory analysis of patients with HER2-positive breast cancer and brain metastases enrolled to the phase 2 HER2CLIMB study, and emphasizes the need for such research efforts to move the needle forward for this population.

The FDA has accepted a biologics license application for the HLX02, a proposed trastuzumab biosimilar, as adjuvant therapy for patients with HER2-overexpressing breast cancer, HER2-overexpressing metastatic breast cancer, and HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma

The first-line standard of care for patients with HER2-postive metastatic breast cancer has long been held by the combination of pertuzumab, trastuzumab, and a taxane established with the publication of data from the CLEOPATRA trial.

Lisa M. Carey, MD, ScM, FASCO, discusses upcoming treatments that could impact standard-of-care practices and the continually evolving role of antibody-drug conjugates role in the breast cancer treatment paradigm.

With the advent of effective drug regimens to treat HER2-positive breast cancer, the use of tailored efforts with neoadjuvant therapy in this space may continue to improve efficacy moving forward.

The advent of antibody-drug conjugates has placed a renewed focus on the lesser thought of HER2 classifications of IHC 1+ and 0.

The antibody-drug conjugate ARX788 was found to significantly improve progression-free survival compared with an active control in patients with HER2-positive locally advanced or metastatic breast cancer.

The National Medical Products Administration of China has approved the use of single-agent fam-trastuzumab deruxtecan-nxki in adult patients with unresectable or metastatic HER2-positive breast cancer who previously received 1 or more anti–HER2-based regimens.

Jasmine Sukumar, MD, discusses the purpose of analyzing endocrine therapy use in HR-positive/HER2-positive patients, key data presented from the retrospective analysis at SABCS, and the need for improved understanding of clinical indications for endocrine therapy in this breast cancer subtype.

As targeted agents for various levels of HER2 expression have demonstrated dynamic interoperability and efficacy, the prognosis for HER2-positive disease has improved.

John Crown, MB, BCh, BAO, BSc, MD, MBA, discusses the rationale for evaluating lapatinib (Tykerb) with standard trastuzumab/chemotherapy regimen in patients with HER2-positive breast cancer, as well as contextualizes results from a phase 2 trial.

Nicholas P. McAndrew, MD, MSCE, discusses the need for HER2-targeted TKIs specifically designed to penetrate the blood-brain barrier, updated clinical data on the safety and tolerability of DZD1516 monotherapy, and the implications of nonclinical data on DZD1516 for treating CNS metastases in HER2-positive breast cancer.

Mridula George, MD, discusses the methods used to evaluate cardiotoxicity associated with adjuvant trastuzumab emtansine plus concurrent radiation therapy, and explains implications on the use of trastuzumab emtansine plus radiation in patients with early-stage HER2-positive breast cancer.

Fam-trastuzumab deruxtecan-nxki has received approval in the European Union as a single agent for the treatment of patients with unresectable or metastatic HER2-low breast cancer who have received prior chemotherapy for metastatic disease or developed disease recurrence during or within six months of completing adjuvant chemotherapy.

Frank A. Vicini, MD, discusses the potential utility of using the DCISionRT test to determine treatment benefit in the phase 3 NRG-NSABP-B43 trial in HER2-positive ductal carcinoma in situ of the breast.

Joyce A. O’Shaughnessy, MD, discusses key data from the phase 3 DESTINY-Breast02 and DESTINY-Breast03 trials in metastatic HER2-positive breast cancer.

Ajay Dhakal, MBBS, discusses the two key trials supporting the use of pertuzumab as a standard-of-care regimen in HER2-positive breast cancer.

John Crown, MB, BCh, BAO, BSc, MD, MBA, discusses previous research with anti-HER2 TKIs in HER2-positive breast cancer, expanded on key follow-up data from this phase 2 trial, and emphasized the importance of continued investigation into this underutilized combination.

Ajay Dhakal, MBBS, discusses the evolution and implementation of the antibody-drug conjugate trastuzumab deruxtecan across the landscape of HER2-positive breast cancer landscape.