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OTX1 and OTX2 Genes in Medulloblastoma.

World Neurosurg. 2019 Jul;127:e58-e64. Epub 2019 Feb 21
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摘要


OBJECTIVE:To study the prevalence of OTX1 and OTX2 gene expression in 60 medulloblastoma specimen samples and to establish correlations between gene expression and clinical and histopathological aspects. METHODS:We performed a retrospective analysis of 60 patients with a diagnosis of medulloblastoma at the Clinicas Hospital of the School of Medicine, University of São Paulo, and the Cancer Hospital of Barretos. We created a database of the 60 patients containing information on the gene expression of OTX1 and OTX2 (obtained using real-time polymerase chain reaction) and clinical and epidemiological data. Statistical tests were performed to verify potential correlations of clinicopathological data and follow-up aspects with gene expression. RESULTS:The OTX1 gene was expressed in 52% of the study population. Expression varied with age (higher in adults), location (predominantly by hemisphere), and histological type (desmoplastic). The OTX2 gene was expressed in 62% of the study population. Expression varied with age (higher in younger age groups), location (predominantly vermis), and histological type (classic and anaplastic). A statistical correlation between OTX2 gene expression and the development of leptomeningeal metastases was observed. CONCLUSIONS:The relative expression of OTX1 and OTX2 was dependent on patient age, tumor location, and histological variant. In addition, OTX2 expression might be a predictive factor for leptomeningeal metastases of medulloblastoma. The OTX pathway should be consider as an important venue for medulloblastomas development.

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