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- W2003282189 abstract "Object. Overexpression of the protooncogene c-kit has been suggested in a gonadal germ cell tumor (GCT). Recently, the soluble isoform of c-kit (s-kit) has been expressed in a variety of cell types. The goal of this study was to investigate the expression of c-kit and the clinical significance of s-kit in patients with GCTs. Methods. The authors first conducted an immunohistochemical investigation of the expression of the c-kit protein in 27 surgical specimens. In all 18 specimens that contained germinomas, c-kit was diffusely expressed on the cell surface of the germinoma cells, but was not found on lymphocytes or interstitial cells. In seven of eight immature teratomas, only some mature components, such as cartilage and glands, were immunoreactive for c-kit. Syncytiotrophoblastic giant cells (STGCs) demonstrated negative findings as well, suggesting that primarily germinoma cells express c-kit. Next, 47 cerebrospinal fluid (CSF) samples collected from 32 patients with GCTs (15 samples from patients with pure germinomas, 16 from patients with STGC germinomas, 14 from patients with teratomas, and two from a patient with a choriocarcinoma) were analyzed using a sandwich enzyme-linked immunosorbent assay. The level of s-kit was significantly higher in CSF collected from patients with germinomas and STGC germinomas than in CSF collected from patients with teratomas or non—germ cell brain tumors, or in CSF collected from controls. The concentration of s-kit in CSF was correlated with the patient's clinical course; it was significantly higher in pretreatment samples obtained before and in samples obtained at the time of tumor recurrence than in samples collected from patients in whom the tumor was in remission. The level of s-kit was remarkably high in CSF collected from patients with subarachnoid tumor dissemination. Conclusions. These results indicate that the concentration of s-kit in CSF may be a useful clinical marker for germinomas, especially for detecting recurrence or subarachnoid dissemination of these lesions." @default.
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- W2003282189 date "2002-07-01" @default.
- W2003282189 modified "2023-09-25" @default.
- W2003282189 title "Diagnostic significance of soluble c-kit in the cerebrospinal fluid of patients with germ cell tumors" @default.
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- W2003282189 doi "https://doi.org/10.3171/jns.2002.97.1.0177" @default.
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