Heather McArthur, MD, MPH

Heather Lynn McArthur, MD, MPH, discusses the primary results from the phase 3 KEYNOTE-756 study of neoadjuvant pembrolizumab plus chemotherapy in early-stage, high-risk, estrogen receptor–positive, HER2-negative breast cancer.

Panelists wrap up their discussion on HER2+ breast cancer by summarizing the most exciting recent advances in the field and their hopes for the future of treatment.

Dr Kaklamani presents a profile of a patient with HER2+ breast cancer and liver metastases who had disease progression after first-line chemotherapy and a solitary new brain metastasis after second-line T-DM1.

Melinda L. Telli, MD, presents a profile of a patient with early stage breast cancer with residual nodal disease after neoadjuvant chemotherapy and surgery, whose tumor was initially HER2+ but became triple-negative after treatment.

Virginia G. Kaklamani, MD, DSc, presents a patient profile of early stage HER2+ breast cancer with residual nodal disease after neoadjuvant chemotherapy and surgery.

Experts share their go-to regimens in the third-line and higher setting of HER2+ metastatic breast cancer, and touch on the factors that support their decision-making.

Debu Tripathy, MD, discusses novel therapies being developed for later-line treatment of HER2+ mBC.

Drs McArthur and Telli discuss recent data updates from the DESTINY-Breast trials of T-DXd, including a pooled analysis, and share best practices for monitoring patients for lung complications.

Drs Tripathy and Kaklamani emphasize the most critical unmet needs for patients with HER2+ metastatic breast cancer in the third-line or higher settings and recap what the field previously learned from the HER2CLIMB trial of tucatinib/trastuzumab/capecitabine.

Panelists briefly touch on ongoing trials of second-line tucatinib combination therapy, including HER2CLIMB-02 and HER2CLIMB-05, in patients with or without brain metastases, and offer their clinical perspective which second-line regimens they typically recommend for their patients with HER2+ mBC.

Experts introduce the antibody-drug conjugates (ADCs) trastuzumab emtansine (T-DM1) and trastuzumab deruxtecan (T-DXd) and discuss clinical trial findings and potential use in special patient populations, such as those with brain metastases.

Drs McArthur and Kaklamani expand upon the standard-of care regimens used for first-line treatment of patients with HER2+ metastatic breast cancer (mBC), review clinical data supporting their use, and share excitement for upcoming data readouts on novel regimens in the space.

Panelists discuss recent data updates on standard-of-care and emerging regimens for adjuvant treatment of HER2+ eBC, including data presented at the 2023 ASCO meeting, and highlight exciting trials in progress that have not yet read out.

Drs Tripathy and McArthur touch on the use of extended adjuvant therapy with neratinib and identify patients who might be suitable for this regimen, including those high-risk patients with residual disease after neoadjuvant therapy.

Virginia G. Kaklamani, MD, DSc, and Melinda L. Telli, MD, review the various adjuvant therapy options available for patients with HER2+ early breast cancer based on stage, risk status, and whether or not they had received neoadjuvant therapy, and then touch on clinical data supporting the use of fixed-dose pertuzumab/trastuzumab (PH) in this setting.

Dr Tripathy provides clinical insight on how he assesses HER2+ eBC patient response to neoadjuvant therapy, discusses the typical prognosis for those who do or do not have residual disease, and touches on how he might approach adjuvant treatment selection for each.

Panelists expand upon the most important clinical factors that inform selection amongst available systemic therapy regimens in the neoadjuvant setting of HER2+ eBC, comment on the potential for treatment de-escalation in lower-risk patients, and discuss exciting treatments on the horizon.

Heather McArthur, MD, and Debu Tripathy, MD, lead a discussion on risk stratification and optimizing treatment for HER2+ early breast cancer (eBC), followed by a review of standard-of-care systemic therapy regimens in the preoperative/neoadjuvant setting.

Heather Lynn McArthur, MD, MPH, discusses key factors considered in the optimal sequencing of first and second line treatment option in patients with advanced triple-negative breast cancer.

Closing out their discussion on HR+ breast cancer management, expert panelists share their excitement for the evolving treatment paradigm.

Comprehensive discussion on novel treatment modalities in HR+ metastatic breast cancer and insight to when it is appropriate to select these agents.

Shared insight on the selection of endocrine partners while managing patients in the relapsed/refractory setting of HR+ metastatic breast cancer.

Closing out their review on treatment strategies for HER2-expressing breast cancer, panelists share practical advice for the community setting.

Key opinion leaders consider when it is appropriate to continue CDK4/6 inhibition at progression of disease in the setting of HR+ metastatic breast cancer.

A brief review of the role molecular profiling plays at a patient’s relapse with HR+ metastatic breast cancer.

Panelists share a brief discussion on early-stage HER2-low breast cancer and identify treatment options available in that setting.

Comprehensive insight on evolving management strategies for patients diagnosed with HER2-low breast cancer.

Heather Lynn McArthur, MD, MPH, discusses the implications of the phase 3 ASCENT trial in patients with advanced triple-negative breast cancer.

Expert perspectives on factors that aid in the selection of optimal first-line therapy for patients with HR+ metastatic breast cancer.

Shifting their focus to HR+ metastatic disease, expert panelists consider the importance of molecular profiling and first-line treatment options.