HR positive

With this technology, we developed trastuzumab deruxtecan, the first DXd-ADC directed toward HER2. Additionally, Dato-DXd showed TROP2-dependent antitumor activity in multiple human cancer cell line-derived and patient-derived xenograft mouse models. Clinically, the global phase III trial targeting hormone receptor-positive, HER2-negative, unresectable or recurrent breast cancer led to its first approval in Japan in December 2024, followed by the approvals in the US and Europe later.

This approach offers a promising, non-invasive alternative to traditional tissue sampling by enabling a "digital biopsy." Integrating these models into clinical workflows could reduce the diagnostic burden on patients and facilitate personalized treatment planning. However, further validation in larger, prospective cohorts is necessary.

Rhabdomyolysis due to CDK4/6 inhibitor-statin interactions is a rare but potentially life-threatening complication. Vigilant monitoring, timely intervention, and tailored treatment strategies are essential for preventing complications and improving patient outcomes.

P2, N=120, Not yet recruiting, Sichuan Baili Pharmaceutical Co., Ltd.

Disparities between Argentina's health subsystems significantly affect the BC stage at diagnosis and treatment timelines, influencing therapeutic pathways and associated costs. These findings highlight the need for targeted, system-level interventions. While further research is needed to confirm their long-term impact, such efforts may contribute to more equitable care and improved outcomes in LMICs.

In the context of contemporary adjuvant treatment, with patients diagnosed within three years postpartum more likely to receive chemotherapy, ovarian function suppression, and CDK4/6 inhibitors, differences in IDFS associated with time since last childbirth did not result in significantly worse IDFS within the follow-up period (89.0% in patients with PPBC up to 3 years vs. 93.7% in all other patients p = 0.39). These findings indicate that tumors diagnosed within the first year postpartum have significantly elevated RS, and that the period of most aggressive PPBC, as reflected by gene expression profiles, may arise in the more recently postpartum period, in the first 0-3 years postpartum.

Culturally sensitive efforts are needed to promote awareness and increase breast cancer screening in distinct ethnic groups. The rapid recent increases in breast cancer incidence in Asian American, Native Hawaiian, and Pacific Islander women, especially early-onset disease, warrant urgent attention.

Younger patients with breast cancer exhibited a higher frequency of high-grade tumors, although no differences were observed in RFS and DRFS. However, locoregional recurrence was more common among younger patients, especially HR-positive/HER2-negative breast cancer.

Herein, we developed drug-conjugated Tam-NHC-gold(I) complexes that can target breast cancer cells by the binding of tamoxifen (Tam) to the G protein-coupled estrogen receptor (GPER) present on cell membranes...Moreover, 7b exhibited potent antiproliferative activity on both wild-type and mutant MCF-7Y537S in xenograft mouse models with low toxicity. This study verified that 7b may offer a new approach for the treatment of endocrine-resistant breast cancer.

This case highlights a rare but severe complication of ABE treatment. While CDK4/6 inhibitors are widely used as first-line agents in advanced breast cancer due to their high efficacy and generally favorable side-effect profile, clinicians should remain vigilant for NE, which requires prompt intervention.

P3, N=1615, Active, not recruiting, Jiangsu HengRui Medicine Co., Ltd. | Recruiting --> Active, not recruiting

HRD represents a reliable independent prognostic biomarker in HR+/HER2- breast cancer in this cohort, with an inverse association with TILs suggesting immune evasion. Its potential impact on prognosis and treatment requires further validation in prospective clinical trials.