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Purpose: Clinical trials showing programmed death (PD)-1-PD-ligand 1 (L1) axis as a promising therapeutic target in melanoma and non-small cell lung cancers have made the pathway a focus of recent attention. However, the data regarding PD-L1/PD-1 in breast cancer are inconsistent. Given the heterogeneity of breast cancers, the clinical relevance of PD-L1 and PD-1 tumor infiltrating lymphocytes (TIL) may vary according to subtypes of breast cancer. We aim to investigate PD-L1 expression in a large cohort of breast cancers and analyze its clinico-pathological as well as outcome relationship according to molecular subtypes. Also, we evaluate the relationship of PD-1 TIL and PD-L1 expression with patients' survival, particularly for breast cancers with high TIL.
Methods And Results: Immunohistochemical analysis of PD-L1 on tissue arrays for 1091 breast cancer patients and PD-1 TIL on 97 whole sections was performed. Associations of PD-L1 with luminal cancers (p < 0.001) and features associated with that subtype [lower histologic grade, absence of necrosis, ER, PR, and AR expression (p < 0.001)] were observed. However, in HER2+ breast cancers, PD-L1 was an independent poor prognostic indicator (DFS: HR = 1.866, p = 0.001; OS: HR = 1.517, p = 0.036). Interestingly, HER2+ cancers showed a lower PD-1 TIL level compared to the other high TIL cases (p = 0.011). Cases with low PD-TIL but high PD-L1 expression showed the worst survival. This could be indicative of an active immune suppression by PD-L1 expression.
Conclusions: Our data showed the relevance of PD-L1 expression in HER2+ breast cancer. A combined evaluation of PD-L1 and PD-1 TIL in the prognosis of breast cancer might also be of value in treatment prediction.
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http://dx.doi.org/10.1007/s10549-016-4095-2 | DOI Listing |
Naunyn Schmiedebergs Arch Pharmacol
December 2024
Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, 646000, China.
Gold nanoparticles (AuNPs) have emerged as promising candidates for cancer therapy due to their unique physicochemical properties and biocompatibility. In this study, we investigate the synthesis, characterization, and therapeutic potential of AuNPs in breast cancer treatment. Further, it establishes a comprehensive understanding of the mechanisms by which AuNPs suppress angiogenesis and breast cancer growth, identifying novel targets and signaling nodes contributing to the anti-tumor effects of AuNPs.
View Article and Find Full Text PDFInt Immunopharmacol
December 2024
School of Medicine, Guizhou University, Guiyang 550025, China; NHC Key Laboratory of Pulmonary Immunological Diseases, Guizhou Provincial People's Hospital, Guiyang 550002, China. Electronic address:
Introduction: Depression negatively impacts the prognosis of various cancers, including lung cancer, by influencing antitumor immune responses and impairing immune cell function. Antidepressants may modulate the tumor immune microenvironment, enhancing immunotherapy efficacy. However, the specific mechanisms remain unclear.
View Article and Find Full Text PDFJTO Clin Res Rep
January 2025
Institut de Cancérologie de l'Ouest, 44805 Saint-Herblain, France.
Introduction: In a phase 1 study, bintrafusp alfa was found to have an encouraging clinical activity in patients with previously treated advanced NSCLC. This study evaluated the safety and efficacy of bintrafusp alfa with chemotherapy in patients with stage IV NSCLC regardless of the programmed death-ligand 1 (PD-L1) expression status.
Methods: In this open-label, phase 1b/2 study (NCT03840915), eligible patients were assigned to one of four cohorts.
J Anim Sci
December 2024
Research Centre for Livestock Environmental Control and Smart Production, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
Lipopolysaccharide (LPS) exposure triggers pulmonary inflammation, leading to compromised lung function in broiler. As amplified by policy restrictions on antibiotic usage, seeking antibiotic alternatives has become imperative. Mogroside V (MGV) has been reported to have a beneficial role in livestock and poultry production due to its remarkable anti-inflammatory effects.
View Article and Find Full Text PDFClin Transl Med
January 2025
Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
Background: Acquired resistance to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR TKIs) remains a significant hurdle for patients with EGFR-mutated non-small cell lung cancer (NSCLC), particularly those lacking the EGFR. IMpower 150 study demonstrated promising efficacy for a combination of immune-chemotherapy and bevacizumab in patients with EGFR-mutated NSCLC.
Methods: This open-label, single-arm, phase II trial evaluated the efficacy and immune cell profile of the modified regimen combining atezolizumab, bevacizumab (7.
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