BACKGROUND: Gemcitabine is a key drug for the treatment of pancreatic cancer. Human equilibrative nucleoside transporter 1 (hENT1) is a major transporter responsible for gemcitabine uptake into cells. This study was conducted to elucidate the association between expression level of hENT1 and outcome for pancreatic cancer patients treated with neoadjuvant therapy including gemcitabine. METHODS: Sixty-three patients who underwent neoadjuvant chemoradiation followed by curative surgery for pancreatic ductal adenocarcinomas were included. Immunohistochemistry was performed using resected specimens and the staining intensity of hENT1 was scored as having no staining, low staining, or high staining; the former two were defined as negative expression of hENT1. The association between expression level of hENT1 and overall survival was evaluated by Cox proportional regression model. RESULTS: Expression level of hENT1 was evaluated as positive in 22 (35%) patients, and as negative in 41 (65%) patients. Univariate analysis showed that regional lymph node metastasis, vascular permeation, and perineural invasion are prognostic factors; however, expression level of hENT1 did not reach statistical significance. Multivariate analysis showed only vascular permeation as a prognostic factor. CONCLUSIONS: Expression level of hENT1 was not associated with prognosis for pancreatic cancer patients who were treated with neoadjuvant chemoradiation including gemcitabine.
BACKGROUND:Gemcitabine is a key drug for the treatment of pancreatic cancer. Humanequilibrative nucleoside transporter 1 (hENT1) is a major transporter responsible for gemcitabine uptake into cells. This study was conducted to elucidate the association between expression level of hENT1 and outcome for pancreatic cancerpatients treated with neoadjuvant therapy including gemcitabine. METHODS: Sixty-three patients who underwent neoadjuvant chemoradiation followed by curative surgery for pancreatic ductal adenocarcinomas were included. Immunohistochemistry was performed using resected specimens and the staining intensity of hENT1 was scored as having no staining, low staining, or high staining; the former two were defined as negative expression of hENT1. The association between expression level of hENT1 and overall survival was evaluated by Cox proportional regression model. RESULTS: Expression level of hENT1 was evaluated as positive in 22 (35%) patients, and as negative in 41 (65%) patients. Univariate analysis showed that regional lymph node metastasis, vascular permeation, and perineural invasion are prognostic factors; however, expression level of hENT1 did not reach statistical significance. Multivariate analysis showed only vascular permeation as a prognostic factor. CONCLUSIONS: Expression level of hENT1 was not associated with prognosis for pancreatic cancerpatients who were treated with neoadjuvant chemoradiation including gemcitabine.
Authors: James J Farrell; Jennifer Moughan; Jonathan L Wong; William F Regine; Paul Schaefer; Al B Benson; John S Macdonald; Xiyong Liu; Yun Yen; Raymond Lai; Zhong Zheng; Gerold Bepler; Chandan Guha; Hany Elsaleh Journal: Pancreas Date: 2016-11 Impact factor: 3.327
Authors: Eugene J Koay; Mark J Truty; Vittorio Cristini; Ryan M Thomas; Rong Chen; Deyali Chatterjee; Ya'an Kang; Priya R Bhosale; Eric P Tamm; Christopher H Crane; Milind Javle; Matthew H Katz; Vijaya N Gottumukkala; Marc A Rozner; Haifa Shen; Jeffery E Lee; Huamin Wang; Yuling Chen; William Plunkett; James L Abbruzzese; Robert A Wolff; Gauri R Varadhachary; Mauro Ferrari; Jason B Fleming Journal: J Clin Invest Date: 2014-03-10 Impact factor: 14.808
Authors: Bruno Vincenzi; Silvia Stacchiotti; Paola Collini; Francesco Pantano; Carla Rabitti; Giuseppe Perrone; Michele Iuliani; Alfonso Baldi; Giuseppe Badalamenti; Roberta Sanfilippo; Daniele Santini; Andrea Onetti Muda; Alessandro Gronchi; Paolo Casali; Angelo Paolo Dei Tos; Giuseppe Tonini Journal: Br J Cancer Date: 2017-06-22 Impact factor: 7.640
Authors: Lingling Du; Melissa DeFoe; Marianna B Ruzinova; Jeffrey R Olsen; Andrea Wang-Gillam Journal: Hematol Oncol Clin North Am Date: 2015-05-30 Impact factor: 3.722