Publications by authors named "Aya Sawa"

Article Synopsis
  • T follicular helper cell lymphomas (TFHLs) show T-like properties and significant immune cell infiltration, but understanding of their tumor-cell diversity and immune profiles is limited.
  • A single-cell transcriptomic analysis revealed five distinct subclusters of tumor cells with varying T marker expressions, indicating clonal evolution driven by genetic changes.
  • Increased exhausted CD8 T cells and unique immune evasion tactics from various immune cell types contribute to a complex immunosuppressive environment, suggesting that this heterogeneity may be linked to treatment resistance in TFHL.
View Article and Find Full Text PDF

Trastuzumab deruxtecan is classified as an anticancer agent that poses a moderate emetic risk in the international guidelines for antiemetic therapy. The guidelines recommend emesis prophylaxis using a two-drug combination therapy comprising a 5-hydroxytryptamine-3 receptor antagonist (5-HT3RA) and dexamethasone (DEX). However, the high incidence of nausea and vomiting associated with trastuzumab deruxtecan is problematic.

View Article and Find Full Text PDF

Introduction: Recently, absolute lymphocyte count (ALC) and neutrophil-to-lymphocyte ratio (NLR) have been reported to be prognostic and/or predictive factors in breast cancer. However, most of the investigations on the relationship between systemic inflammatory markers and prognosis have been conducted perioperatively, with few studies reporting on patients with metastatic or recurrent breast cancer (MBC). Here, we investigated the role of ALC and NLR as prognostic factors of MBC.

View Article and Find Full Text PDF
Article Synopsis
  • Non-haematopoietic cells (NHCs) play a significant role in the development of lymphomas, but their diversity has made it hard to understand their functions.
  • Researchers created a detailed single-cell transcriptome atlas of over 100,000 NHCs from 27 human samples, discovering 30 unique subclusters, some of which were previously unknown.
  • The findings provided insights into how NHCs interact with malignant cells in follicular lymphoma and suggested new clinical biomarkers, improving our understanding of lymph node biology and informing future lymphoma treatments.
View Article and Find Full Text PDF

Giant cell tumors of soft tissue (GCT-ST) arising in the breast are extremely rare. Herein, we report a case of a 45-year-old woman with a 5-cm mass in her left breast. Ultrasonography revealed a mainly well-circumscribed mass that contained a cystic lesion.

View Article and Find Full Text PDF

Intramammary metastasis of renal cell carcinoma (RCC) is extremely rare, accounting for only 1.5% of all intramammary metastases. Distinguishing intramammary metastases from benign tumors and breast cancer is clinically problematic.

View Article and Find Full Text PDF

Well-differentiated thyroid carcinomas have driver mutations involving growth factor receptor-tyrosine kinases (RTKs) or their intracellular signaling pathway, that is, the mitogen-activated protein kinase (MAPK) pathway. Sorafenib is a multikinase inhibitor of RTKs and the MAPK pathway and has recently been used for the treatment of unresectable well-differentiated thyroid carcinoma. In normal thyroid follicular cells, stimulation of the thyroid-stimulating hormone (TSH) receptor activates the cyclic adenosine monophosphate (cAMP) pathway and promotes cell growth as well as hormonal secretion.

View Article and Find Full Text PDF

Nab-paclitaxel (nab-PTX) is a nanoparticle albumin-bound paclitaxel and, as such, is free of solvents like ethanol and polyoxyethylene castor oil. The absence of solvents from this formulation has several practical advantages: it has a shorter infusion time, it negates the need for premedications for hypersensitivity reactions, and it can be administered to patients with alcoholic hypersensitivity. It is thought that nab-paclitaxel will be in widespread use in the near future because of its convenience and efficacy.

View Article and Find Full Text PDF