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. 2015 Apr 18;15:304. doi: 10.1186/s12885-015-1302-1

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© Ho et al.; licensee BioMed Central. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Progression-free survival curves (PFS) with number at risk stratified by FGFR1 intensity. The Ariol imaging platform was used to stratify the specimens based on intensity of in situ hybridization staining for FGFR1. Non-tumor tissue was excluded from analysis. The differences across FGFR1 intensity strata were statistically significant with better progression-free survival among those patients with the lowest FGFR1 intensity (level 1) in univariate analysis; P = 0.0452.