Academic Journal
Influence of KRAS mutations, persistent organic pollutants, and trace elements on survival from pancreatic ductal adenocarcinoma
| العنوان: | Influence of KRAS mutations, persistent organic pollutants, and trace elements on survival from pancreatic ductal adenocarcinoma |
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| المؤلفون: | Porta, M, Pumarega, J, Amaral, A, Genkinger, JM, Camargo, J, Mucci, L, Alguacil, J, Gasull, M, Zhang, X, Morales, E, Iglesias, M, Ogino, S, Engel, LS, For the PANKRAS II Study Group |
| المصدر: | 13 ; 1 |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2020 |
| المجموعة: | Imperial College London: Spiral |
| مصطلحات موضوعية: | KRAS oncogene, metals, pancreatic cancer, pancreatic ductal adenocarcinoma (PDAC), persistent organic pollutants (POPs), survival, trace elements, PANKRAS II Study Group, Toxicology, 03 Chemical Sciences, 05 Environmental Sciences, 06 Biological Sciences |
| الوصف: | Introduction Reasons why pancreatic ductal adenocarcinoma (PDAC) continues to have poor survival are only partly known. No previous studies have analyzed the combined influence of KRAS mutations, persistent organic pollutants (POPs), and trace elements upon survival in PDAC or in any other human cancer. Objective To analyze the individual and combined influence of KRAS mutations, POPs, and trace elements upon survival from PDAC. Methods Incident cases of PDAC (n = 185) were prospectively identified in five hospitals in Eastern Spain in 1992-1995 and interviewed face-to-face during hospital admission. KRAS mutational status was determined from tumour tissue through polymerase chain reaction and artificial restriction fragment length polymorphism. Blood and toenail samples were obtained before treatment. Serum concentrations of POPs were analyzed by high-resolution gas chromatography with electron-capture detection. Concentrations of 12 trace elements were determined in toenail samples by inductively coupled plasma mass spectrometry. Multivariable Cox proportional hazards regression was used to assess prognostic associations. Results Patients with a KRAS mutated tumor had a 70% higher risk of early death than patients with a KRAS wild-type PDAC (hazard ratio [HR] = 1.7, p = 0.026), adjusting for age, sex, and tumor stage. KRAS mutational status was only modestly and not statistically significantly associated with survival when further adjusting by treatment or by treatment intention. The beneficial effects of treatment remained unaltered when KRAS mutational status was taken into account, and treatment did not appear to be less effective in the subgroup of patients with a KRAS mutated tumor. POPs did not materially influence survival: the adjusted HR of the highest POP tertiles was near unity for all POPs. When considering the joint effect on survival of POPs and KRAS, patients with KRAS mutated tumors had modest and nonsignificant HRs (most HRs around 1.3 to 1.4). Higher concentrations of lead, cadmium, arsenic, ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| تدمد: | 0013-9351 |
| Relation: | Environmental Research; http://hdl.handle.net/10044/1/80822 |
| DOI: | 10.1016/j.envres.2020.109781 |
| الاتاحة: | http://hdl.handle.net/10044/1/80822 https://doi.org/10.1016/j.envres.2020.109781 |
| Rights: | © 2020 Elsevier Inc. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| رقم الانضمام: | edsbas.FBCB5FA1 |
| قاعدة البيانات: | BASE |
| تدمد: | 00139351 |
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| DOI: | 10.1016/j.envres.2020.109781 |