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Reduced Folate Carrier and Folylpolyglutamate Synthetase, but not Thymidylate Synthase Predict Survival in Pemetrexed-Treated Patients Suffering from Malignant Pleural Mesothelioma Fabian Mairinger, BSc, Claudia Vollbrecht, BSc, Iris Halbwedl, Martina Hatz, Elvira Stacher, MD, Christian Gülly, PhD, Franz Quehenberger, PhD, Susann Stephan-Falkenau, MD, Jens Kollmeier, MD, Andreas Roth, MD, Thomas Mairinger, MD, Helmut Popper, MD Journal of Thoracic Oncology Volume 8, Issue 5, Pages (May 2013) DOI: /JTO.0b013e318287c224 Copyright © 2013 International Association for the Study of Lung Cancer Terms and Conditions
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FIGURE 1 Overview of the cellular folate activation and transport mechanisms. After (anti)folate uptake into the cell, FPGS adds glutamate groups and leads to an increase of activity approximately 60-fold in comparison with the native form. FPGS, folylpolyglutamate synthetase; RFC1, reduced folate carrier; FR-1, folate receptor 1. Journal of Thoracic Oncology 2013 8, DOI: ( /JTO.0b013e318287c224) Copyright © 2013 International Association for the Study of Lung Cancer Terms and Conditions
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FIGURE 2 Kaplan–Meier curve of (A) OS and (B–C) factor-dependent survival (clinical variables,; (D–F) expression of markers. Censored patients were marked by crosses. Neither age, nor sex, nor the TS expression levels were significantly associated with survival. OS, overall survival; CI, confidence interval; TS, thymidylate synthase; FPGS, folylpolyglutamate synthetase; RFC, reduced folate carrier. Journal of Thoracic Oncology 2013 8, DOI: ( /JTO.0b013e318287c224) Copyright © 2013 International Association for the Study of Lung Cancer Terms and Conditions
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