EGFR positive

Physician confidence improved (P < 0.001) and the estimated total cost savings, including direct drug costs, vein access devices, and HER2DX costs, amounted to €98 031. HER2DX impacts clinical management in stage I-III HER2-positive BC by supporting treatment adjustments, enhancing physician confidence, maintaining pCR rates, and reducing health care costs.

Palbociclib, ribociclib, and abemaciclib are approved for the treatment of hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer (aBC), in combination with aromatase inhibitors or fulvestrant...Subsequent therapies, including chemotherapy (CT), endocrine therapy (ET) with or without everolimus, and CDK4/6i-based regimens, were evaluated...These findings emphasize the variability in treatment efficacy following CDK4/6i therapy and underscore the importance of personalized treatment strategies. Further research is needed to optimize therapeutic sequences and improve patient outcomes in this setting.

The utilization of s.c. pertuzumab/trastuzumab/hyaluronidase rose from 0 to 87 doses/month, with a consequent decline in the usage of i.v. pertuzumab/trastuzumab...Reducing time toxicity and extending care to the community is pivotal to cancer patients with constrained timeframes. These findings provide valuable insights for decision making in health care policy and negotiations with drug companies to ensure s.c. formulations are affordable.

Patients were treated in first-line (1L) with osimertinib or other TKIs (non-osimertinib). This study demonstrates that real-world treatment patterns and outcomes of TKIs are comparable with those found in both clinical trials and other real-world studies. RWE studies can support clinicians in investigating the best treatment strategy and decision makers to drive new health policies.

Similarly, HER2 IHC 3+, intestinal type lesions, and better mGPS (0 or 1) are associated with longer rwPFS. However, T-DXd should not be withheld even in patients without these factors, as a median PFS of 3.42 months was observed in those with the shortest prior trastuzumab exposure.

Reduction of PDI needs careful consideration, balancing adverse events and potential impact. Confirmation in independent datasets is warranted.

In contrast, the other patient showed limited response, with persistent complex CICs, which led to an adjustment of the adjuvant regimen. These observations suggest that dynamic cell-in-cell (CIC) patterns may reflect heterogeneous tumor responses to NACT, providing insights for individualized treatment planning.

Nonetheless, primary and acquired resistance driven by HER2 heterogeneity, immune evasion, and dynamic molecular evolution remain major challenges. Next-generation HER2-targeted therapies, including bispecific antibodies, novel antibody - drug conjugates, and dual HER2 antibodies will be crucial to further improve outcomes in this population.

Adjuvant radiotherapy and intensive endocrine therapy (endocrine therapy and abemaciclib) were administered postoperatively...This flap necrosis was suggestive of RRD. This report details the clinical course, management strategies, and a review of relevant literature, aiming to provide valuable insights for clinicians in handling similar cases and enhance awareness of potential risks associated with this treatment combination.

Our comprehensive analysis of cell-cell communication networks among epithelial cells, fibroblasts, macrophages, and lymphocytes across BC subtypes focuses on ligand-receptor interactions. This study revealed that certain molecules within these networks exhibit significant prognostic value and therapeutic promise.

Furthermore, CD24 knockdown reduced its expression level by promoting the ubiquitination modification of epidermal growth factor receptor (EGFR), and significantly inhibited its downstream AKT/mTOR signaling pathway. By interacting with EGFR and modulating the mTOR pathway, CD24 acted as a critical regulator of autophagic cell death, thereby enhancing the sensitivity of HER2+ BC cells and reversing Pyrotinib resistance.

At 24 months post-surgery, the patient remains free of disease. This case underscores the importance of prompt multidisciplinary management in aggressive presentations of breast cancer, even when associated with paraneoplastic syndromes.