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Sökning: WFRF:(Couvelard Anne)

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2.
  • Jensen, Robert T., et al. (författare)
  • Unmet Needs in Functional and Nonfunctional pancreatic neuroendocrine neoplasms
  • 2019
  • Ingår i: Neuroendocrinology. - : S. Karger AG. - 0028-3835 .- 1423-0194. ; 108:1, s. 26-36
  • Tidskriftsartikel (refereegranskat)abstract
    • Recently, the European Neuroendocrine Tumor Society (ENETS) held working sessions composed of members of the advisory board and other neuroendocrine neoplasm (NEN) experts to attempt to identify unmet needs in NENs in different locations or with advanced/poorly differentiated NENs. This report briefly summarizes the main proposed areas of unmet needs in patients with functional and nonfunctional pancreatic NENs.
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3.
  • Knappskog, Stian, et al. (författare)
  • Mutation Spectrum in Liquid Versus Solid Biopsies From Patients With Advanced Gastroenteropancreatic Neuroendocrine Carcinoma.
  • 2023
  • Ingår i: JCO precision oncology. - 2473-4284. ; 7
  • Tidskriftsartikel (refereegranskat)abstract
    • Gastroenteropancreatic neuroendocrine carcinomas (GEP-NEC) are rare and have a poor prognosis. Most GEP-NEC are diagnosed with metastatic disease, with only minor biopsies available for molecular diagnostics. We assessed the applicability of liquid biopsies for molecular profiling of GEP-NEC.We performed massive parallel sequencing of 76 cancer-related genes in circulating tumor DNA from 50 patients with advanced GEP-NEC and compared findings to previous analyses of solid tumor biopsies from the same patients. Plasma samples were collected before therapy, and the median time span between blood and tissue sampling was 25 days.We detected 178 somatic mutations in the liquid biopsies, 127 (71%) were also detected in the solid biopsies, whereas 51 (29%) were unique to the liquid biopsies. In the same 76 genes, we previously detected 199 somatic mutations (single nucleotide variants) in solid biopsies, of which 127 (64%) were also now detected in liquid biopsies. In exploratory subgroup assessments, concordance was higher in patients with liver metastases (P = 1.5 × 10-5) and increasing with level of liver involvement (P = 1.2 × 10-4). The concordance was similar between GEP-NEC with different primary sites, except being lower in esophageal cases (P = .001). Concordance was not associated with tumor mutation burden. Tumor tissue mutations also detected in liquid biopsies was lower for MSI (40%) versus MSS tumors (70%; P = 7.8 × 10-4). We identified potentially targetable mutations in plasma of 26 (52%) of patients with GEP-NEC; nine patients (18%) had potentially targetable mutation detected only in liquid biopsies.Liquid biopsy analyses may be an applicable alternative to solid biopsies in GEP-NEC. Liquid biopsies may add additional mutations compared with tumor biopsies alone and could be useful for biomarker assessment in clinical trials for these patients.
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4.
  • Morken, Siren, et al. (författare)
  • Phase II study of everolimus and temozolomide as first-line treatment in metastatic high-grade gastroenteropancreatic neuroendocrine neoplasms.
  • 2023
  • Ingår i: British journal of cancer. - 0007-0920 .- 1532-1827. ; 129:12, s. 1930-1939
  • Tidskriftsartikel (refereegranskat)abstract
    • The optimal treatment for metastatic high-grade gastroenteropancreatic (GEP) neuroendocrine neoplasms when Ki-67 ≤55% is unknown. A prospective multi-centre phase 2 study was performed to evaluate the efficacy andsafety of everolimus and temozolomide as first-line treatment for these patients.Patients received everolimus 10mg daily continuously and temozolomide 150mg/m2 for 7 days every 2 weeks. Endpoints included response, survival, safety and quality of life (QoL). Histopathological re-evaluation according to the 2019 WHO classification was performed.For 37 eligible patients, the primary endpoint with 65% disease control rate (DCR) at 6 months (m) was reached. The response rate was 30%, the median progression-free survival (PFS) 10.2months and the median overall survival (OS) 26.4months. Considering 26 NET G3 patients, 6months DCR was 77% vs. 22% among nine NEC patients (p=0.006). PFS was superior for NET G3 vs. NEC (12.6months vs. 3.4months, Log-rank-test: p=0.133, Breslow-test: p<0.001). OS was significantly better for NET G3 (31.4months vs. 7.8months, p=0.003). Grade 3 and 4 toxicities were reported in 43% and 38%. QoL remained stable during treatment.Everolimus and temozolomide may be a treatment option for selected GEP-NET G3 patients including careful monitoring. Toxicity did not compromise QoL.ClinicalTrials.gov (NTC02248012).
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6.
  • Perren, Aurel, et al. (författare)
  • ENETS Consensus Guidelines for the Standards of Care in Neuroendocrine Tumors : Pathology-Diagnosis and Prognostic Stratification
  • 2017
  • Ingår i: Neuroendocrinology. - : S. Karger AG. - 0028-3835 .- 1423-0194. ; 105:3, s. 196-200
  • Tidskriftsartikel (refereegranskat)abstract
    • The European Neuroendocrine Tumor Society (ENETS) proposed standard of care guidelines for pathology in 2009. Since then, profound changes in the classification have been made, dividing neuroendocrine neoplasia (NEN) into well-differentiated neuroendocrine tumors (NET) and poorly differentiated neuroendocrine carcinomas (NEC) in the 2010 WHO classification. The 7th edition of the TNM classification (2009) included NEN for the first time, widely adapting ENETS proposals but with some differences for NEC and for NET of the pancreas and the appendix. Therapy guidelines for gastroenteropancreatic NET were updated in 2016. The need for an update of the standards of care prompted the ENETS to organize a consensus conference which was held in Antibes in 2015; a working group was designated to propose pathological standards of care.
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8.
  • Ramage, John K, et al. (författare)
  • Colorectal Neuroendocrine Neoplasms - areas of unmet need
  • 2019
  • Ingår i: Neuroendocrinology. - : S. Karger AG. - 0028-3835 .- 1423-0194. ; 108:1, s. 45-53
  • Tidskriftsartikel (refereegranskat)abstract
    • The subject of colorectal neuroendocrine neoplasms (NENs), subdivided into well-differentiated NENs, termed neuroendocrine tumours (NETs; grade (G) 1 and 2), and poorly differentiated NENs, termed neuroendocrine carcinomas (NECs; G3) according to the 2010 World Health Organisation (WHO) classification, has arguably not had as much attention or study as NENs occurring in other sites. Colorectal NETs and NECs are however easier to study than many others since they are usually not difficult to remove and are increasingly detected because of intensified colorectal cancer screening and surveillance programmes. Colorectal NETs and NECs show site-specific heterogeneity with variable behaviour and different therapeutic options; these various aspects provide unique challenges. Because of bowel cancer screening programmes, colorectal NENs, like conventional adenocarcinomas, may be diagnosed at a stage that is associated with improved survival. In this article we intend to describe and define areas of unmet needs relating to the epidemiology, classification, pathology, diagnosis and therapy of colorectal NETs (including NETs G3), colorectal NECs, and finally, mixed adeno-neuroendocrine carcinomas (MANECs) by reviewing and discussing the relevant literature.
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9.
  • Rindi, G., et al. (författare)
  • TNM staging of foregut (neuro)endocrine tumors: a consensus proposal including a grading system.
  • 2006
  • Ingår i: Virchows Archiv : an international journal of pathology. - : Springer Science and Business Media LLC. - 0945-6317 .- 1432-2307. ; 449:4, s. 395-401
  • Forskningsöversikt (refereegranskat)abstract
    • The need for standards in the management of patients with endocrine tumors of the digestive system prompted the European Neuroendocrine Tumor Society (ENETS) to organize a first Consensus Conference, which was held in Frascati (Rome) and was based on the recently published ENETS guidelines on the diagnosis and treatment of digestive neuroendocrine tumors (NET). Here, we report the tumor-node-metastasis proposal for foregut NETs of the stomach, duodenum, and pancreas that was designed, discussed, and consensually approved at this conference. In addition, we report the proposal for a working formulation for the grading of digestive NETs based on mitotic count and Ki-67 index. This proposal, which needs to be validated, is meant to help clinicians in the stratification, treatment, and follow-up of patients.
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10.
  • Rindi, G., et al. (författare)
  • TNM staging of midgut and hindgut (neuro) endocrine tumors: a consensus proposal including a grading system.
  • 2007
  • Ingår i: Virchows Archiv : an international journal of pathology. - : Springer Science and Business Media LLC. - 0945-6317. ; 451:4, s. 757-62
  • Tidskriftsartikel (refereegranskat)abstract
    • Criteria for the staging and grading of neuroendocrine tumors (NETs) of midgut and hindgut origin were established at the second Consensus Conference in Frascati (Rome) organized by the European Neuroendocrine Tumor Society (ENETS). The proposed tumor-node-metastasis (TNM) classifications are based on the recently published ENETS Guidelines for the Diagnosis and Treatment of gastroenteropancreatic NETs and follow our previous proposal for foregut tumors. The new TNM classifications for NETs of the ileum, appendix, colon, and rectum, and the grading system were designed, discussed, and consensually approved by all conference participants. These proposals need to be validated and are meant to help clinicians in the stratification, treatment and follow-up of patients.
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