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EpCAM is expressed in many epithelial tumors and is used for the distinction of malignant mesotheliomas from adenocarcinomas and as a surrogate pan-epithelial marker. A tissue microarray containing 14,832 samples from 120 different tumor categories was analyzed by immunohistochemistry. EpCAM staining was compared with TROP2 and CKpan. EpCAM staining was detectable in 99 tumor categories. Among 78 epithelial tumor types, the EpCAM positivity rate was ≥90% in 60 categories-including adenocarcinomas, neuroendocrine neoplasms, and germ cell tumors. EpCAM staining was the lowest in hepatocellular carcinomas, adrenocortical tumors, renal cell neoplasms, and in poorly differentiated carcinomas. A comparison of EpCAM and CKpan staining identified a high concordance but EpCAM was higher in testicular seminomas and neuroendocrine neoplasms and CKpan in hepatocellular carcinomas, mesotheliomas, and poorly differentiated non-neuroendocrine tumors. A comparison of EpCAM and TROP2 revealed a higher rate of TROP2 positivity in squamous cell carcinomas and lower rates in many gastrointestinal adenocarcinomas, testicular germ cell tumors, neuroendocrine neoplasms, and renal cell tumors. These data confirm EpCAM as a surrogate epithelial marker for adenocarcinomas and its diagnostic utility for the distinction of malignant mesotheliomas. In comparison to CKpan and TROP2 antibodies, EpCAM staining is particularly common in seminomas and in neuroendocrine neoplasms.
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http://dx.doi.org/10.3390/diagnostics14101044 | DOI Listing |
Clin Transplant Res
September 2025
Asan Institute of Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Background: A decellularized liver scaffold (DLS) is a three-dimensional acellular extracellular matrix created by removing cellular components from liver tissue. Hepatocellular carcinoma (HCC) organoids represent a useful experimental model.
Methods: HCC organoids from patient-derived xenografts (PDX), liver organoids, and HepG2 cells were expanded by cultivation within a murine DLS.
Diagn Pathol
August 2025
Department of Pathology, Faculty of Medicine, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
Background: Bladder cancer is characterized by its heterogeneous nature and high propensity for recurrence and progression. The absence of reliable diagnostic and prognostic biomarkers to accurately identify high-risk patients further complicates the clinical management of the disease. MOC-31, an antibody that targets epithelial cell adhesion molecule (EpCAM), is utilized to distinguish between mesothelioma and metastatic cancer, but its clinical utility, prognostic value and functional dynamics in bladder cancer have yet to be verified.
View Article and Find Full Text PDFTissue Cell
August 2025
Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK.
The increased prevalence of chronic constipation, faecal impaction and incontinence among older individuals have been linked in part, to age-related degenerative changes within the bowel. In aged laboratory animals, increased mucosal permeability has been associated with overall loss of mucosal integrity, but equivalent studies have not been conducted for the human colon. We address this knowledge gap by examining the number of intestinal stem cells and epithelial tight junction proteins, and densities of connective tissues, namely total collagen and elastin, on macroscopically normal ascending (AC; adults: 30-52 years and elderly: 70 - 89 years) and descending (DC; adults: 42-60 years and elderly: 67 - 82 years) colon using immunohistochemistry and tinctorial staining techniques.
View Article and Find Full Text PDFFront Oncol
July 2025
Department of Gynecology and Obstetrics, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Background: Epithelial ovarian cancer (EOC) currently lacks highly specific biomarkers for clinical screening. This study aimed to identify and validate novel auxiliary diagnostic markers for EOC.
Methods: Through integrated analysis of transcriptome sequencing data and single-cell RNA sequencing from public databases, we identified mesothelin (MSLN) as an EOC-specific target.
Cureus
August 2025
Department of Clinical Pathology and Medical Technology, Lerdsin Hospital, Bangkok, THA.
Introduction Hepatocellular carcinoma (HCC) is a leading cause of cancer-related mortality worldwide. Cancer stem cells (CSCs) are believed to play critical roles in tumor initiation, progression, metastasis, and treatment resistance. This study aimed to evaluate the expression of the four most commonly CSCs with relevant to HCC, namely, CD44, CD90, CD133, and epithelial cell adhesion molecule (EpCAM), in tumor and adjacent noncancerous tissues of Thai HCC patients and to explore their association with clinicopathological features and patient survival.
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