[The impact of combined immunotherapy on the cellular composition of the tumor microenvironment in patients with gastric carcinoma].

Objective: To evaluate the impact of combined anti-PD-1 immunotherapy on the cellular composition of the tumor microenvironment in patients with gastric cancer.

Material And Methods: The study included 9 patients with morphologically confirmed gastric adenocarcinoma (stages T2-4N0-1M0) and positive PD-L1 status (CPS >1). All patients received 8 courses of preoperative chemotherapy according to the FLOT regimen, combined with additional immunotherapy using pembrolizumab (400 mg every 6 weeks).

PD-1-Positive CD8+ T Cells and PD-1-Positive FoxP3+ Cells in Tumor Microenvironment Predict Response to Neoadjuvant Chemoimmunotherapy in Gastric Cancer Patients.

Background/objectives: In gastric cancer, only a subset of patients benefit clinically from neoadjuvant chemoimmunotherapy, underscoring the need for robust biomarkers that can predict treatment responses and guide personalized immunotherapy. This study aimed to characterize the immune microenvironment of gastric tumors and identify predictive markers associated with therapeutic efficacy.

Methods: We prospectively enrolled 16 patients with histologically confirmed, PD-L1-positive (CPS ≥ 1) gastric adenocarcinoma (TNM).

[Solitary fibrous tumor of the kidney].

Solitary fibrous tumor is a rare mesenchymal neoplasm, the most common localization of which is the pleural cavity, but the tumor can also affect other organs. This neoplasm with localisation in the kidney was first described only in 1996. Solitary fibrous tumor accounts for 0.

Revealing molecular mechanisms of early-onset tongue cancer by spatial transcriptomics.

Tongue cancer at a young age demonstrates an increase in incidence, aggressiveness, and poor response to therapy. Classic etiological factors for head and neck tumors such as tobacco, alcohol, and human papillomavirus are not related to early-onset tongue cancer. Mechanisms of development and progression of this cancer remain unclear.

Evaluation of HER2/neu Expression in Metastatic Axillary Lymph Node Tissue of Breast Cancer Patients Using [99mTc]Tc-(HE)3-G3.

Anatomic visualization and molecular typing of metastatic regional lymph nodes in breast cancer patients are a serious clinical challenge in modern oncology. According to the results of previous studies, [99mTc]Tc-(HE)3-G3 has proven to be a promising diagnostic agent in differentiating the HER2/neu receptor status in primary breast tumors ( < 0.05, Mann-Whitney test).