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. 2018 Apr;118(7):947-954.
doi: 10.1038/s41416-018-0004-2. Epub 2018 Mar 8.

Expression of dihydropyrimidine dehydrogenase (DPD) and hENT1 predicts survival in pancreatic cancer

Affiliations

Expression of dihydropyrimidine dehydrogenase (DPD) and hENT1 predicts survival in pancreatic cancer

N O Elander et al. Br J Cancer. 2018 Apr.

Abstract

Background: Dihydropyrimidine dehydrogenase (DPD) tumour expression may provide added value to human equilibrative nucleoside transporter-1 (hENT1) tumour expression in predicting survival following pyrimidine-based adjuvant chemotherapy.

Methods: DPD and hENT1 immunohistochemistry and scoring was completed on tumour cores from 238 patients with pancreatic cancer in the ESPAC-3(v2) trial, randomised to either postoperative gemcitabine or 5-fluorouracil/folinic acid (5FU/FA).

Results: DPD tumour expression was associated with reduced overall survival (hazard ratio, HR = 1.73 [95% confidence interval, CI = 1.21-2.49], p = 0.003). This was significant in the 5FU/FA arm (HR = 2.07 [95% CI = 1.22-3.53], p = 0.007), but not in the gemcitabine arm (HR = 1.47 [0.91-3.37], p = 0.119). High hENT1 tumour expression was associated with increased survival in gemcitabine treated (HR = 0.56 [0.38-0.82], p = 0.003) but not in 5FU/FA treated patients (HR = 1.19 [0.80-1.78], p = 0.390). In patients with low hENT1 tumour expression, high DPD tumour expression was associated with a worse median [95% CI] survival in the 5FU/FA arm (9.7 [5.3-30.4] vs 29.2 [19.5-41.9] months, p = 0.002) but not in the gemcitabine arm (14.0 [9.1-15.7] vs. 18.0 [7.6-15.3] months, p = 1.000). The interaction of treatment arm and DPD expression was not significant (p = 0.303), but the interaction of treatment arm and hENT1 expression was (p = 0.009).

Conclusion: DPD tumour expression was a negative prognostic biomarker. Together with tumour expression of hENT1, DPD tumour expression defined patient subgroups that might benefit from either postoperative 5FU/FA or gemcitabine.

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Conflict of interest statement

J.P.N. reports a consulting or advisory role for Boehringer Ingelheim Pharma GmbH & Co. K.G. Novartis Pharma AG; KAEL GemVax and Astellas. Research Funding from Taiho Pharma (Japan), PI, paid to Institution; KAEL GemVax (Korea), PI, paid to Institution; AstraZeneca, PI, paid to Institution; Pharma Nord, PI, paid to Institution. Travel Expenses from NUCANA, Amgen and Mylan. B.G. reports a Consulting and Advisory role for Pledpharma AB and Isofol AB. M.D. reports a Consulting and Advisory role for socar research.com and travel expenses from Imotech. M.L. reports Consulting and Advisory role for Solvay, Axcan, Abbvie, Abbott, Mylan, Nordmark, AstraZeneca, Centogene, Roche, ISIS, Ionis and KMG Kliniken. Travel Expenses from Falk Foundation, Roche, Abbott and Abbvie, Falk Foundation, Roche, Menarini, Abbott, Abbvie, Mylan and Nordmark. Research Funding from Deutsche Forschungsgemeinschaft (DFG), Deutsche Krebshilfe/lvlildred Scheel Stiftung, Krupp Foundation, German Federal Ministry of Education and Research (BMBF), European Union (FP7, EFRE, ESF and Horizon 20120), the State Ministy of Education and Research Mecklenburg-Vorpommern, State Minisüry of Economics MV. Jo.M. reports Consulting and Advisory role for Pfizer, Stock or Other Ownership from Pacylex Pharmaceuticals Inc and Patent or intellectual Property from Pacylex Pharmaceutical Inc. Ju.M. reports Consulting or Advisory role for Metonomics Health. Research Funding from Astra Zeneca, Patent or Intellectual Property from Metanomics Health, Honoraria from Boehringer Ingelheim and Falk Foundation and Travel Expenses from Falk and Celgene. J.S. reports a Consulting or Advisory role for Amgen. W.G. reports Travel Expenses from Nucana Biomed. N.T. reports Travel Expenses from Roche and Honoraria from Amgen, Roche and Shire. N.E. reports Research Funding from NUCANA. D.G. reports Research Funding from Celgene. D.P. reports Research Funding from Nucana Biomed and Honoraria from Bayer, Nucana Biomed, Sictex, Celgene and Baxalta. A.S. reports Speakers’ Bureau from Amgen and Honoraria from Amgen, Sanofi, Roche, Lilly, Leo, and Celgene.

Figures

Fig. 1
Fig. 1
Kaplan–Meier survival curves and median overall survival for DPD-low vs. DPD-high tumour expression in the entire chemotherapy-treated population (5FU/FA plus gemcitabine), 5FU/FA treated patients, gemcitabine-treated patients, and the small observational (OBS) population

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