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Pancreatic adenocarcinoma

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https://www.readbyqxmd.com/read/29778616/routine-portal-vein-resection-for-pancreatic-adenocarcinoma-shows-no-benefit-in-overall-survival
#1
Fritz Klein, Finja Berresheim, Matthäus Felsenstein, Thomas Malinka, Uwe Pelzer, Timm Denecke, Johann Pratschke, Marcus Bahra
BACKGROUND: Extended pancreatic resections including resections of the portal (PV) may nowadays be performed safely. Limitations in distinguishing tumor involvement from inflammatory adhesions however lead to portal vein resections (PVR) without evidence of tumor infiltration in the final histopathological examination. The aim of this study was to analyze the impact of these "false negative" resections on operative outcome and long-term survival. METHODS: 40 patients who underwent pancreatic resection with PVR for pancreatic adenocarcinoma (PA) without tumor infiltration of the PV (PVR-group) were identified...
May 9, 2018: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29778400/stromal-heterogeneity-in-pancreatic-cancer-and-chronic-pancreatitis
#2
Lena Haeberle, Katja Steiger, Anna Melissa Schlitter, Sami Alexander Safi, Wolfram Trudo Knoefel, Mert Erkan, Irene Esposito
BACKGROUND/OBJECTIVES: An abundant stromal reaction is a hallmark of pancreatic ductal adenocarcinoma (PDAC) and chronic pancreatitis (CP). The cells mainly responsible for the stromal reaction are activated pancreatic stellate cells (PSCs). Despite their crucial role, PSCs are not well characterized. PSCs share characteristics with the better-known hepatic stellate cells (HSCs). The aim of this study was a detailed analysis of PSCs in PDAC and CP. METHODS: Whole-slide specimens of CP (n = 12) and PDAC (n = 10) were studied by histochemistry and immunohistochemistry...
May 12, 2018: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29778232/nuclear-bap1-loss-is-common-in-intrahepatic-cholangiocarcinoma-and-a-subtype-of-hepatocellular-carcinoma-but-rare-in-pancreatic-ductal-adenocarcinoma
#3
Asmaa Mosbeh, Khalil Halfawy, Wael S Abdel-Mageed, Dina Sweed, Mohamed H Abdel Rahman
Deletion in the 3p21 region, the chromosomal location of BAP1, has been reported in a subset of hepatocellular carcinoma (HCC), biliary and pancreatic cancers. This suggests that BAP1 could play a role in the pathogenesis of these tumors. We assessed the frequency of BAP1 loss by immunohistochemistry in 103 hepatic, biliary and pancreatic cancers. We also assessed chromosomal alterations in the BAP1 region in the same tumors by genotyping. We identified high frequency 4/8 (50%) of BAP1 loss in intrahepatic cholangicarcinoma (ICC)...
August 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29777302/emerging-strategies-in-brca-positive-pancreatic-cancer
#4
REVIEW
Adam Kowalewski, Łukasz Szylberg, Michał Saganek, Wojciech Napiontek, Paulina Antosik, Dariusz Grzanka
PURPOSE: We propose a treatment algorithm for PDAC with particular emphasis on BRCA1 or 2 mutation-positive patients. Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest diseases in the United States and Europe. BRCA1 and BRCA2 are among the most common of the known genetic mutations involved in familial PDAC. The optimal chemotherapy regimen to use for BRCA1 or 2 mutation carriers with PDAC is not yet established. As new treatment options emerge, algorithms must balance the need to give the best drugs first with ensuring that there are still beneficial options available for later...
May 18, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29776636/molecular-diagnostics-in-the-neoplasms-of-the-pancreas-liver-gallbladder-and-extrahepatic-biliary-tract-2018-update
#5
REVIEW
Lei Zhang, Martin H Bluth, Amarpreet Bhalla
Pancreatic neoplasms, including ductal adenocarcinoma, solid pseudopapillary neoplasm, pancreatic endocrine neoplasms, acinar cell carcinoma, and pancreatoblastoma, are associated with different genetic abnormalities. Hepatic adenomas with beta-catenin exon 3 mutation are associated with a high risk of malignancy. Hepatic adenoma with arginosuccinate synthetase 1 expression or sonic hedgehog mutations are associated with a risk of bleeding. Hepatocellular carcinoma and choangiocarcinoma display heterogeneity at both morphologic and molecular levels Cholangiocellular carcinoma is most commonly associated with IDH 1/2 mutations...
June 2018: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/29775792/diagnostic-yield-from-screening-asymptomatic-individuals-at-high-risk-for-pancreatic-cancer-a-meta-analysis-of-cohort-studies
#6
Juan E Corral, Karl F Mareth, Douglas L Riegert-Johnson, Ananya Das, Michael B Wallace
BACKGROUND & AIMS: There have been few studies of abdominal imaging screening of individuals at high risk for pancreatic cancer (based on family history or genetic variants). We performed a meta-analysis of prospective cohort studies to determine the diagnostic yield and outcomes of abdominal imaging screening for asymptomatic individuals at high risk. METHODS: Through a systematic review of multiple electronic databases and conference proceedings through July 2017, we identified prospective cohort studies (>20 patients) of asymptomatic adults determined to be at high-risk of pancreatic cancer (lifetime risk >5%, including specific genetic-associated conditions) who were screened by endoscopic ultrasound (EUS) and/or magnetic resonance imaging (MRI) to detect pancreatic lesions...
May 15, 2018: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29775618/association-between-klotho-expression-and-malignancies-risk-and-progression-a-meta-analysis
#7
Song Mao, Xiaopeng Wang, Liangxia Wu, Dou Zang, Wenjing Shi
BACKGROUND: We assessed the association between tissue klotho protein expression and the risk and progression of malignancies. METHODS: We searched the electronic databases for the studies regarding the relationship between tissue klotho protein expression and risk/progression of malignancies through January 2018. We calculated the pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs) to evaluate the impact of tissue klotho protein expression on malignancies...
May 17, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29775598/selective-cytotoxicity-of-the-nampt-inhibitor-fk866-toward-gastric-cancer-cells-with-markers-of-the-epithelial-mesenchymal-transition-due-to-loss-of-naprt
#8
Jooyoung Lee, Hyosil Kim, Jae Eun Lee, Su-Jin Shin, Sejin Oh, Sungjin Kwon, Hakhyun Kim, Yoon Young Choi, Michael A White, Soonmyung Paik, Jae-Ho Cheong, Hyun Seok Kim
BACKGROUND & AIMS: Markers of the epithelial-mesenchymal transition (EMT) in gastric tumor tissues are associated with poor outcomes of patients. We performed a screen to identify pharmacologic compounds that kill gastric cancer cells with EMT-associated gene expression patterns and investigate their mechanisms. METHODS: We identified 29 gastric cancer cell lines with gene expression signature previously associated with an EMT subtype, based on data from RNA sequence analyses, and confirmed their mesenchymal phenotypes of 7 lines (Hs746T, SNU1750, MKN1, SK4, SNU484, SNU668, and YCC11), based in invasive activity and protein markers...
May 15, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29774183/quantitative-parameters-of-intravoxel-incoherent-motion-diffusion-weighted-imaging-ivim-dwi-potential-application-in-predicting-pathological-grades-of-pancreatic-ductal-adenocarcinoma
#9
Wanling Ma, Guangwen Zhang, Jing Ren, Qi Pan, Didi Wen, Jinman Zhong, Zhuoli Zhang, Yi Huan
Background: The aim of this study was to compare intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI) parameters such as standard apparent diffusion coefficient (ADCstandard ), pure diffusion coefficient (Dslow ), pseudodiffusion coefficient (Dfast ) and perfusion fraction (ƒ) for differentiating pancreatic ductal adenocarcinoma (PDAC) with different pathological grades. Methods: Institutional Review Board of our hospital approved this study protocol...
April 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29773832/distinct-epigenetic-landscapes-underlie-the-pathobiology-of-pancreatic-cancer-subtypes
#10
Gwen Lomberk, Yuna Blum, Rémy Nicolle, Asha Nair, Krutika Satish Gaonkar, Laetitia Marisa, Angela Mathison, Zhifu Sun, Huihuang Yan, Nabila Elarouci, Lucile Armenoult, Mira Ayadi, Tamas Ordog, Jeong-Heon Lee, Gavin Oliver, Eric Klee, Vincent Moutardier, Odile Gayet, Benjamin Bian, Pauline Duconseil, Marine Gilabert, Martin Bigonnet, Stephane Garcia, Olivier Turrini, Jean-Robert Delpero, Marc Giovannini, Philippe Grandval, Mohamed Gasmi, Veronique Secq, Aurélien De Reyniès, Nelson Dusetti, Juan Iovanna, Raul Urrutia
Recent studies have offered ample insight into genome-wide expression patterns to define pancreatic ductal adenocarcinoma (PDAC) subtypes, although there remains a lack of knowledge regarding the underlying epigenomics of PDAC. Here we perform multi-parametric integrative analyses of chromatin immunoprecipitation-sequencing (ChIP-seq) on multiple histone modifications, RNA-sequencing (RNA-seq), and DNA methylation to define epigenomic landscapes for PDAC subtypes, which can predict their relative aggressiveness and survival...
May 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29773761/surgical-treatment-of-pancreatic-cancer
#11
Wioletta Masiak-Segit, Karol Rawicz-Pruszyński, Magdalena Skórzewska, Wojciech P Polkowski
The only way to cure the patient with adenocarcinoma of the pancreas (RT) is surgical excision of the tumor. The standard surgical treatment of resectable pancreatic carcinoma is considered the classic pancreatoduodenectomy (PD) with the Kausch- Whipple procedure, or the pylorus-preserving PD with the Traverso-Longmire method. The most difficult technically and at the same time the most important PD stage from an oncological point of view is the separation of the head of the pancreas from the superior mesenteric artery...
April 30, 2018: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/29773669/unresolved-endoplasmic-reticulum-stress-engenders-immune-resistant-latent-pancreatic-cancer-metastases
#12
Arnaud Pommier, Naishitha Anaparthy, Nicoletta Memos, Z Larkin Kelley, Alizée Gouronnec, Ran Yan, Cédric Auffray, Jean Albrengues, Mikala Egeblad, Christine A Iacobuzio-Donahue, Scott K Lyons, Douglas T Fearon
The majority of patients with pancreatic ductal adenocarcinoma (PDA) develop metastatic disease after resection of their primary tumor. We found that livers from patients and mice with PDA harbor single, disseminated cancer cells (DCCs) lacking expression of cytokeratin-19 (CK19) and major histocompatibility complex class I (MHCI). We created a mouse model to determine how these DCCs develop. Intra-portal injection of immunogenic PDA cells into pre-immunized mice seeded livers only with single, non-replicating DCCs that were CK19- and MHCI- The DCCs exhibited an endoplasmic reticulum (ER) stress response but, paradoxically lacked both inositol-requiring enzyme 1α activation and expression of the spliced form of transcription factor XBP1 (XBP1s)...
May 17, 2018: Science
https://www.readbyqxmd.com/read/29771769/systemic-chemotherapy-for-advanced-rare-pancreatic-histotype-tumors-a-retrospective-multicenter-analysis
#13
Oronzo Brunetti, Giuseppe Aprile, Paolo Marchetti, Enrico Vasile, Andrea Casadei Gardini, Mario Scartozzi, Sandro Barni, Sara Delfanti, Fernando De Vita, Francesco Di Costanzo, Michele Milella, Chiara Alessandra Cella, Rossana Berardi, Ivana Cataldo, Aldo Scarpa, Debora Basile, Federica Mazzuca, Giusi Graziano, Antonella Argentiero, Daniele Santini, Michele Reni, Stefano Cascinu, Nicola Silvestris
OBJECTIVES: Two issues were put forth by clinicians in the management of the advanced stages of rare variants of pancreatic ductal adenocarcinoma and other exocrine histotypes with peculiar clinical and pathological features: Do chemotherapy regimens recommended in pancreatic ductal adenocarcinoma patients have a clinical activity in rare pancreatic tumors? Or should other chemotherapy combinations be considered in this subset of patients? METHODS: We conducted a multicenter retrospective study that collected data from 2005 to 2016 at 14 Italian cancer centers with the aim to evaluate tumor response and time to progression for first- and second-line and overall survival...
May 15, 2018: Pancreas
https://www.readbyqxmd.com/read/29771765/comparison-of-fasting-human-pancreatic-polypeptide-levels-among-patients-with-pancreatic-ductal-adenocarcinoma-chronic-pancreatitis-and-type-2-diabetes-mellitus
#14
Sajan Jiv Singh Nagpal, William R Bamlet, Yogish C Kudva, Suresh T Chari
OBJECTIVES: Human pancreatic polypeptide (HPP) is a hormone secreted by the ventral pancreas. While postprandial HPP levels have been studied in chronic pancreatitis (CP) and pancreatic ductal adenocarcinoma (PDAC), there are limited data on fasting HPP in these diseases. METHODS: Fasting serum HPP was measured in the following groups of patients: CP with diabetes mellitus (DM) (n = 16), CP without DM (n = 34), PDAC with new-onset DM (n = 50), PDAC without DM (n = 49), new-onset type 2 DM (n = 50), and controls without DM (n = 49)...
May 17, 2018: Pancreas
https://www.readbyqxmd.com/read/29770847/the-investigation-of-the-survival-time-after-recurrence-in-patients-with-pancreatic-ductal-adenocarcinoma-for-individualization-of-adjuvant-chemotherapy
#15
Daisaku Yamada, Hidetoshi Eguchi, Yoshifumi Iwagami, Tadafumi Asaoka, Takehiro Noda, Koichi Kawamoto, Kunihito Gotoh, Shogo Kobayashi, Masaki Mori, Yuichiro Doki
PURPOSE: Pancreatic ductal adenocarcinoma (PDAC) is a lethal disease; however, the frequency of recurrence can be reduced if curative surgery following adjuvant chemotherapy is applied. At present, adjuvant chemotherapy is uniformly performed in all patients, as it is unclear which tumor types are controlled best or worst. We investigated patients with recurrence to establish the optimum treatment strategy. METHODS: Of 138 patients who underwent curative surgery for PDAC, 85 developed recurrence...
May 17, 2018: Surgery Today
https://www.readbyqxmd.com/read/29769629/risk-of-multiple-pancreatic-cancers-in-cdkn2a-p16-leiden-mutation-carriers
#16
Isaura Ibrahim, Babs G Sibinga Mulder, Bert Bonsing, Hans Morreau, Arantza Farina Sarasqueta, Akin Inderson, Saskia Luelmo, Shirin Feshtali, Thomas P Potjer, Wouter de Vos Tot Nederveen Cappel, Martin Wasser, Hans F A Vasen
CDKN2A-p16-Leiden mutation carriers have a substantial risk of developing pancreatic ductal adenocarcinoma (PDAC). One of the main clinical features of hereditary cancer is the development of multiple cancers. Since 2000, we have run a surveillance program for CDKN2A-p16-Leiden mutation carriers. The patients are offered a yearly MRI with optionally endoscopic ultrasound. In patients with a confirmed lesion, usually, a partial resection of the pancreas is recommended. A total of 18 PDAC (8.3%) were detected in 218 mutation carriers...
May 16, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29769534/a-five-microrna-signature-for-survival-prognosis-in-pancreatic-adenocarcinoma-based-on-tcga-data
#17
Xiu-Hui Shi, Xu Li, Hang Zhang, Rui-Zhi He, Yan Zhao, Min Zhou, Shu-Tao Pan, Chun-Le Zhao, Ye-Chen Feng, Min Wang, Xing-Jun Guo, Ren-Yi Qin
Novel biomarkers for pancreatic adenocarcinoma are urgently needed because of its poor prognosis. Here, by using The Cancer Genome Atlas (TCGA) RNA-seq data, we evaluated the prognostic values of the differentially expressed miRNAs and constructed a five-miRNA signature that could effectively predict patient overall survival (OS). The Kaplan-Meier overall survival curves of two groups based on the five miRNAs were notably different, showing overall survival in 10.2% and 47.8% at five years for patients in high-risk and low-risk groups, respectively...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769055/one-visceral-artery-may-be-enough-successful-pancreatectomy-in-a-patient-with-total-occlusion-of-the-celiac-and-superior-mesenteric-arteries
#18
Evangelos Tagkalos, Florian Jungmann, Hauke Lang, Stefan Heinrich
BACKGROUND: The anatomic variations of the visceral arteries are not uncommon. The liver arterial blood supply shows 50% variability between humans, with the most common anatomy being one hepatic artery arising from the celiac trunk and one pancreatico-duodenal arcade between the celiac trunk and the superior mesenteric artery. Occlusion of one artery are mostly asymptomatic but may become clinically relevant when surgery of the liver, bile duct or the pancreas is required. If these pathologies are not reversible, an oncologic pancreatic head resection cannot be performed...
May 16, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29766302/technique-safety-and-feasibility-of-eus-guided-radiofrequency-ablation-in-unresectable-pancreatic-cancer
#19
Filippo Scopelliti, Antonio Pea, Rita Conigliaro, Giovanni Butturini, Isabella Frigerio, Paolo Regi, Alessandro Giardino, Helga Bertani, Marina Paini, Paolo Pederzoli, Roberto Girelli
BACKGROUND AND AIMS: Radiofrequency ablation (RFA) is a well-recognized local ablative technique applied in the treatment of different solid tumors. Intraoperative RFA has been used for non-metastatic unresectable pancreatic ductal adenocarcinoma (PDAC), showing increased overall survival in retrospective studies. A novel RFA probe has recently been developed, allowing RFA under endoscopic ultrasound (EUS) guidance. Aim of the present study was to assess the feasibility and safety of EUS-guided RFA for unresectable PDACs...
May 15, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29765539/crm1-xpo1-expression-in-pancreatic-adenocarcinoma-correlates-with-survivin-expression-and-the-proliferative-activity
#20
David M Saulino, Pamela S Younes, Jennifer M Bailey, Mamoun Younes
CRM1/XPO1 (CRM1) is a nuclear export chaperone that mediates the export of proteins essential to growth regulation and tumor suppression. Its overexpression in tumors was found to be associated with poor prognosis. Selective inhibitors of nuclear export are in phase I and II clinical trials for several tumor types. Our aim was to investigate CRM1 expression in pancreatic adenocarcinoma (PAC) and its relationship to survivin expression and the proliferative activity. Sections of tissue microarray containing 76 formalin fixed and paraffin embedded PAC were stained by immunohistochemistry (IHC) for CRM1, survivin, and Cyclin A...
April 20, 2018: Oncotarget
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