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Published in: Journal of Gastrointestinal Surgery 1/2021

01-01-2021 | Metastasis | SSAT Plenary Presentation

Alteration of FBXW7 is Associated with Worse Survival in Patients Undergoing Resection of Colorectal Liver Metastases

Authors: Yoshikuni Kawaguchi, Timothy E. Newhook, Hop S. Tran Cao, Ching-Wei D. Tzeng, Yun Shin Chun, Thomas A. Aloia, Arvind Dasari, Scott Kopetz, Jean-Nicolas Vauthey

Published in: Journal of Gastrointestinal Surgery | Issue 1/2021

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Abstract

Background

For patients undergoing resection of colorectal liver metastases (CLMs), the prognostic role of somatic gene alterations is increasingly recognized. F-box/WD repeat–containing protein 7 (FBXW7) is a tumor suppressor gene found in approximately 10% of patients with colorectal cancer. The aim of this study is to assess the association of FBXW7 with overall survival after CLM resection.

Methods

Patients who underwent initial CLM resection during 2001–2016 and had genetic sequencing data were studied. Risk factors for overall survival (OS) were evaluated with Cox proportional hazards models using backward elimination.

Results

Of 2045 patients who underwent CLM resection during the study period, 476 were included. The majority (90.5%) underwent prehepatectomy chemotherapy. A total of 27 patients (5.7%) had FBXW7 alteration, along with 240 (50.4%) RAS, 337 (70.8%) TP53, 51 (10.7%) SMAD4, and 27 (5.7%) BRAF. Cox proportional hazards model analyses including 5 somatic gene alteration status and 12 clinicopathologic factors revealed FBXW7(hazard ratio [HR] 1.99, P = 0.015), BRAF (HR 2.47, P = 0.023), RAS (HR 2.42, P < 0.001), TP53 (HR 2.00, P < 0.001), and SMAD4 alterations (HR 1.90, P = 0.004) as significantly associated with OS, together with three clinicopathologic factors, prehepatectomy chemotherapy > 6 cycles (HR 1.51, P = 0.021), number of CLM (HR 1.05, P = 0.007), and largest liver metastasis diameter (HR 1.07, P = 0.023). The covariate-adjusted 5-year OS was significantly lower in patients with FBXW7 alteration than in patients with FBXW7 wild-type (40.4% vs.59.4%, P = 0.015).

Conclusions

FBXW7 alterations are associated with worse survival after CLM resection. The information on multiple somatic gene alterations is imperative for risk stratification and patient selection for CLM resection.
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Metadata
Title
Alteration of FBXW7 is Associated with Worse Survival in Patients Undergoing Resection of Colorectal Liver Metastases
Authors
Yoshikuni Kawaguchi
Timothy E. Newhook
Hop S. Tran Cao
Ching-Wei D. Tzeng
Yun Shin Chun
Thomas A. Aloia
Arvind Dasari
Scott Kopetz
Jean-Nicolas Vauthey
Publication date
01-01-2021
Publisher
Springer US
Published in
Journal of Gastrointestinal Surgery / Issue 1/2021
Print ISSN: 1091-255X
Electronic ISSN: 1873-4626
DOI
https://doi.org/10.1007/s11605-020-04866-2

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