ESMO Breast Cancer Virtual Meeting

Sacituzumab govitecan-hziy displayed a manageable safety profile consistent with previous reports in patients with hormone receptor–positive, HER2-negative metastatic breast cancer, irrespective of UGT1A1 status, according to a safety analysis of the phase 3 TROPiCS-02 trial.

Atezolizumab in combination with trastuzumab and vinorelbine generated responses and a tolerable safety profile in patients with HER2-positive, estrogen receptor–negative or ER-positive/PAM50 non-luminal advanced breast cancer, according to data from a prespecified interim analysis of the phase 2 ATREZZO trial.

Abemaciclib plus endocrine therapy delivered sustained survival benefits with a tolerable safety profile when used as adjuvant treatment in Chinese patients with high-risk, hormone receptor–positive, HER2-negative early breast cancer.

Capivasertib plus fulvestrant provided a clinically meaningful improvement in progression-free survival over fulvestrant alone in patients with hormone receptor–positive advanced breast cancer, including those who previously received a CDK4/6 inhibitor, chemotherapy in the advanced setting, or had baseline liver metastases.

The combination of OP-1250 and palbociclib produced a tolerable safety profile and elicited tumor responses and disease stabilization in patients with hormone receptor–positive, HER2-negative metastatic breast cancer.

The frontline combination of ribociclib and letrozole significantly prolonged overall survival over letrozole alone in a subset of patients with hormone receptor–positive, HER2-negative advanced breast cancer who had de novo metastatic disease or late recurrence from neoadjuvant therapy, according to data from an exploratory analysis of the phase 3 MONALEESA-2 trial.

Preoperative treatment with atezolizumab, epirubicin, trastuzumab, and pertuzumab led to improved rates of pathologic complete response and decreased residual cancer burden compared with trastuzumab, pertuzumab, and chemotherapy alone in patients with early-stage HER2-positive breast cancer, according to findings from the randomized phase 2 ATHENE trial.

The addition of atezolizumab to neoadjuvant chemotherapy generated numerical improvements in event-free survival, disease-free survival, and overall survival compared with chemotherapy plus placebo in patients with early-stage triple-negative breast cancer.

Sacituzumab govitecan-hziy produced comparable efficacy outcomes for patients with metastatic triple-negative breast cancer who had a higher incidence of grade 2 or 3 diarrhea and neutropenia vs patients in the overall population, according to a post hoc analysis of the phase 3 ASCENT trial presented at the 2023 ESMO Breast Cancer Annual Congress.

Fam-trastuzumab deruxtecan-nxki was associated with better efficacy outcomes compared with treatment of physician’s choice in patients with HER2-low, estrogen receptor-low metastatic breast cancer, according to findings from a subgroup analysis of the phase 3 DESTINY-Breast04 study.

Olaparib provided consistent clinical benefit in patients with germline BRCA-mutated, HER2-negative metastatic breast cancer, irrespective of estrogen receptor expression level.

Adjuvant abemaciclib with endocrine therapy led to a tolerable safety profile in patients with hormone receptor-positive, HER2-negative, node-positive, high-risk, early breast cancer,

Patient-reported outcomes with fam-trastuzumab deruxtecan-nxki in HER2-positive metastatic breast cancer reflected the regimen’s favorable risk-benefit profile in the phase 3 DESTINY-Breast02 trial, according to findings presented during the 2023 ESMO Breast Cancer Annual Congress.

Treatment with trastuzumab deruxtecan resulted in lower exposure-adjusted incidence rates per patient-year of treatment-emergent adverse effects compared with treatment of physician’s choice in patients with HER2-low unresectable and/or metastatic breast cancer, according to safety analysis from the phase 3 DESTINY-Breast04 trial.

Elacestrant maintained the quality of life for patients with metastatic breast cancer for at least 6 treatment cycles, according to patient reported outcomes.

The combination of the TROP2-directed antibody-drug conjugate datopotamab deruxtecan and durvalumab showcased early activity with acceptable safety when used as first-line treatment in patients with locally advanced or metastatic triple-negative breast cancer, according to data from the phase 1b/2 BEGONIA trial.

Entrectinib produced deep and durable responses in patients with breast cancer harboring NTRK fusions.

The addition of abemaciclib to endocrine therapy improved invasive disease-free survival and distant relapse-free survival vs endocrine therapy alone in patients with high-risk, hormone receptor–positive, HER2-negative, early-stage breast cancer, irrespective of menopausal status.

The addition of nivolumab to trastuzumab deruxtecan did not result in a marked clinical benefit in patients with locally advanced unresectable or metastatic HER2-positive breast cancer.

HER2 expression appeared to be a significant predictor for response to fam-trastuzumab deruxtecan-nxki, according to findings from a biomarker analysis of patients with metastatic breast cancer in the phase 2 DAISY trial.

The addition of adjuvant abemaciclib to endocrine therapy resulted in a clinically meaningful reduction in the risk of developing invasive disease, particularly incurable distant metastatic disease, in patients with high-risk, hormone receptor–positive, HER2-negative, early breast cancer who comprised cohort 1 of the phase 3 monarchE trial.

The addition of pembrolizumab to chemotherapy led to significant survival benefits without substantial deterioration in health-related quality of life among patients with treatment-naïve, PD-L1–positive advanced triple-negative breast cancer according to results from the phase 3 KEYNOTE-355 trial.

Nearly all patients with HER2-positive breast cancer with brain metastases who received fam-trastuzumab deruxtecan-nxki elicited benefit, according to data from a primary outcome analysis of the phase 2 TUXEDO-1 trial.

The combination of alpelisib plus endocrine therapy elicited a clinical benefit across all subgroups of patients with hormone receptor–positive, HER2-negative advanced breast cancer with PIK3CA mutations.

Overall health status and quality of life were maintained among patients with HER2-positive metastatic breast cancer who were treated with fam-trastuzumab deruxtecan-nxki compared with those who received ado-trastuzumab emtansine.

Sacituzumab govitecan-hziy maintained clinical benefit in patients with metastatic triple-negative breast cancer regardless of HER2 expression according to a post hoc analysis of the phase 3 ASCENT trial.

The addition of ribociclib to fulvestrant continued to significantly prolong overall survival, delayed time to second disease progression, and improved chemotherapy-free survival vs placebo plus fulvestrant in the first-line treatment of patients with advanced hormone receptor–positive, HER2-negative breast cancer.

Kelly de Ligt, PhD, discusses subgroups of symptom burden seen in breast cancer survivors.

Chau T. Dang, MD, discusses the safety profile of pertuzumab plus trastuzumab in patients with HER2-positive locally advanced, inflammatory, or early-stage breast cancer.

Effective early detection and optimal management are critical in preventing high-grade interstitial lung disease, a treatment-related adverse effect of fam-trastuzumab deruxtecan-nxki in patients with HER2-positive metastatic breast cancer.