Metastasis

Carcinoma

Biology

Stem cell marker

Malignancy

Stem cell

Cancer research

Cancer stem cell

Genetics

Internal medicine

Oncology

Medicine

Immunohistochemistry

Gastric carcinoma

Cancer

Pathology

Pathologica

Introduction. Gastric cancer is considered to be the fourth most common malignancy worldwide and the second cause of cancer deaths.Regarding the cancer stem cells (CSCs) theory, they are a small group of tumor cells with unrestricted self-renewal and differentiation abilitiesthat help tumor formation. There is an interest in the utility of CD133 as a promising marker to detect the tumor stem cell populationfor a variety of solid malignancies including gastric cancer. Tumors that express stem cell markers such as CD133 are found to be moreaggressive tumors with poor prognosis and high liability for recurrence. This study aimed to evaluate the immunohistochemical expression ofCD133 in invasive gastric carcinoma and study the relation between CD133 immunohistochemical expression and different clinicopathologicalparameters.Material and methods. 77 cases of gastric carcinoma were collected from the surgical pathology unit at the Gastroenterology Center, MansouraUniversity, Egypt. CD133 expression in tumor tissue was evaluated by immunohistochemistry.Results. CD133 expression positively correlated with tumor metastasis and recurrence. Multivariate analysis revealed CD133 positivity to bean independent prognostic factor for tumor recurrence (P = 0.03).Conclusion. CD133 is a good marker that can predict tumor recurrence and metastasis in gastric carcinoma. Even though, studies regardingCSCs are still in their initial stages especially those related to CD133 in gastric cancer.

Expression of CD133 as a cancer stem cell marker in invasive gastric carcinoma