Brain Tumors Research Today is a free monthly online journal that collates and summarizes the latest research about Brain Tumors, including details on symptoms, benign and malignant tumors, gliomas, screening, treatment.

IQGAP1 and IGFBP2: valuable biomarkers for determining prognosis in glioma patients.

McDonald KL, O'Sullivan MG, Parkinson JF, Shaw JM, Payne CA, Brewer JM, Young L, Reader DJ, Wheeler HT, Cook RJ, Biggs MT, Little NS, Teo C, Stone G, Robinson BG

Cancer Genetics, Kolling Institute of Medical Research, St. Leonards, New South Wales, Australia. kerriem@med.usyd.edu.au

Clinical treatment decisions and the survival outcomes of patients with gliomas are directly impacted by accurate tumor classification. New and more reliable prognostic markers are needed to better identify the variable duration of survival among histologically defined glioma grades. Microarray expression analysis and immunohistochemistry were used to identify biomarkers associated with gliomas with more aggressive biologic behaviors. The protein expression of IQGAP1 and IGFBP2, when used in conjunction with the World Health Organization grading system, readily identified and defined a subgroup of patients with grade III gliomas whose prognosis was poor. In addition, in patients with glioblastoma multiforme, in whom IQGAP1 and IGFBP2 were absent, long-term survival of more than 3 years was observed. The use of these markers confirmed a nonuniform distribution of survival in those with World Health Organization grade III and IV tumors. Thus, IQGAP1 and IGFBP2 immunostaining supplements current histologic grading by offering additional prognostic and predictive information.

Published 7 May 2007 in J Neuropathol Exp Neurol, 66(5): 405-17.
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