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Exploring the expression of DLL3 in gastroenteropancreatic neuroendocrine neoplasms and its potential diagnostic value.
Sci Rep
January 2025
State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Department of Pathology, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, China.
Delta-like protein (DLL3) is a novel therapeutic target. DLL3 expression in gastroenteropancreatic neuroendocrine tumors (GEP-NECs) is poorly understood, complicating the distinction between well-differentiated neuroendocrine tumors G3 (NET G3) and poorly differentiated NEC. DLL3 immunohistochemistry (IHC) was performed on 248 primary GEP-NECs, correlating with clinicopathological parameters, NE markers, PD-L1, Ki67 index, and prognosis.
View Article and Find Full Text PDF[Clinicopathological analysis of primary gastric oncocytic neuroendocrine tumors].
Zhonghua Bing Li Xue Za Zhi
February 2025
Departmen of Pathology, Jiangsu Province (Suqian) Hospital/Suqian First Hospital, Suqian 223800, China.
[Application of PMS2 and MSH6 double-antibody detection in screening of mismatch repair deficient tumors].
Zhonghua Bing Li Xue Za Zhi
February 2025
Department of Pathology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China.
Article Synopsis
- The study investigated the effectiveness of using two immunohistochemical markers (PMS2 and MSH6) as a replacement for four markers (MLH1, PMS2, MSH2, MSH6) in detecting mismatch repair deficient (dMMR) cancers across nearly 8,000 cases.
- The results indicated high consistency between the two marker sets, with Cohen κ values ranging from 0.88 to 1.00, and overall sensitivity and specificity for 2-MMR at 99.6% and 100%, respectively.
- The findings suggest that the more streamlined 2-MMR could effectively replace 4-MMR for dMMR screening due to its high reliability, with only a minuscule
Prevalence of Microsatellite Instability in Gastric and Gastroesophageal Junction Cancer patients from a Latin American Country.
Gac Med Mex
January 2025
School of Medicine, Pontificia Universidad Javeriana.
Background: In Colombia, gastric cancer is fifth in incidence (12.8 cases per 100,000) and third in mortality (9.9 cases per 100,000).
View Article and Find Full Text PDFPD-L1 as a Biomarker in Gastric Cancer Immunotherapy.
J Gastric Cancer
January 2025
Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Combining chemotherapy with immune checkpoint inhibitors (ICIs) that target the programmed death-1 (PD-1) protein has been shown to be a clinically effective first-line treatment for human epidermal growth factor receptor 2 (HER2)-negative and -positive advanced or metastatic gastric cancer (GC). Currently, PD-1 inhibitors combined with chemotherapy are the standard treatment for patients with HER2-negative/positive locally advanced or metastatic GC. Programmed death-ligand 1 (PD-L1) expression, as assessed using immunohistochemistry (IHC), is a crucial biomarker for predicting response to anti-PD-1/PD-L1 agents in various solid tumors, including GC.
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