The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Prognostic significance of co-overexpression of the EGFR/IGFBP-2/HIF-2A genes in astrocytomas.

Overexpression of the EGFR, IGFBP-2 and HIF-2A genes has been observed in high-grade astrocytomas and these genes seem to be functionally related to one another. This study aimed to define the profile of their expressions, interactions and correlation with clinical features and prognostic significance in microdissected tumor samples from 84 patients with astrocytomas of different grades and from 6 white matter non-neoplasic brain tissue sample. EGFR, IGFBP-2 and HIF-2A gene expression levels were analyzed by quantitative real-time PCR and differed significantly between grades I-IV astrocytic tumors (P < 0.0001, P < 0.0001 and P: 0.0013, respectively) when analyzed by the Kruskal-Wallis test. Grade I astrocytomas presented gene expression levels similar to those encountered in samples of microdissected white matter of non-neoplastic brain tissue Overexpression of the EGFR, IGFBP-2 and HIF-2A genes was significantly associated with lower 2-year survival (P: 0.009, P: 0.0002 and P: 0.008, respectively). Co-overexpression of these genes was strongly associated with high-grade gliomas and lower survival in univariate (P < 0.0001) and multivariate (P: 0.009) analysis, suggesting that the co-expression of the EGFR/IGFBP-2/HIF-2A pathway genes may have a more important clinical and biological impact than the expression of each individual gene alone. These data support the existence of a common pathway involving these genes that could contribute to the design of new target treatments.[1]


  1. Prognostic significance of co-overexpression of the EGFR/IGFBP-2/HIF-2A genes in astrocytomas. Scrideli, C.A., Carlotti, C.G., Mata, J.F., Neder, L., Machado, H.R., Oba-Sinjo, S.M., Rosemberg, S., Marie, S.K., Tone, L.G. J. Neurooncol. (2007) [Pubmed]
WikiGenes - Universities