Clinical significance of fibroblast growth factor receptor 2 expression in patients with residual rectal cancer after preoperative chemoradiotherapy: relationship with ... View Full Text


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Article Info

DATE

2016-08

AUTHORS

Ghilsuk Yoon, Hwayoung Lee, Jae-Hoon Kim, Keun Hur, An Na Seo

ABSTRACT

This study was designed to determine the prognostic impact and clinical significance of FGFR2 in residual disease after preoperative chemoradiotherapy (CRT) in patients with rectal cancer. The surgical specimens of 145 patients with residual rectal cancer after preoperative CRT were analyzed. To evaluate FGFR2 expression, immunohistochemistry was performed on whole section tissues. KRAS exon 2 (codon 12 and 13), BRAF V600E mutational status, and microsatellite instability (MSI) were determined using polymerase chain reactions. Of the eligible 141 patients, FGFR2 over-expression was observed in 75.9 % (n = 107) and was correlated with perineural invasion (P = 0.005) and inferior tumor regression grading (TRG) (P = 0.009). However, FGFR2 expression had no relationship with KRAS and BRAF mutation results or with MSI results. On univariate analysis, FGFR2 over-expression was significantly associated with worse rectal cancer-specific survival (RCSS) (P = 0.005) and disease-free survival (DFS) (P = 0.035). However, multivariate analysis revealed that FGFR2 over-expression was not independently associated with RCSS and DFS (all P > 0.05). Although FGFR2 over-expression did not independently influence patient outcome, FGFR2 over-expression was associated with worse prognosis and inferior TRG. Our data may aid in understanding the therapeutic approaches targeting FGFR2 in patients with residual rectal cancer after preoperative CRT. More... »

PAGES

10209-10218

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s13277-016-4899-z

DOI

http://dx.doi.org/10.1007/s13277-016-4899-z

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1030532141

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/26831663


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