339 results on '"Xavier, M."'
Search Results
2. Examination of isotropy assumption in isogrid structures through analysis and experimentation on four isogrid variations
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Xavier M. Delgado and Craig G. Merrett
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Aerospace Engineering - Published
- 2023
3. Systemic and Ocular Adverse Events with Intravitreal Anti-VEGF Therapy Used in the Treatment of Diabetic Retinopathy: a Review
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Jason A. Zehden, Xavier M. Mortensen, Ashvini Reddy, and Alice Yang Zhang
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Endocrinology, Diabetes and Metabolism ,Internal Medicine - Published
- 2022
4. The Influence of Organizational Culture on the Job Satisfaction of Insurance Companies' Employees
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Hyacinth N. Castillo, Ralph Justin C. Hermogenes, Anne Margarette L. Oliva, Alexis Gabrielle N. Juliales, Joshua Ullrich S. Nieto, Railey Alexander DI. Mendoza, Lorenzo Danilo V. Sindayen, Khymn Xavier M. Esteban, Jared Gerick Kyle D.C. Marcelino, and Jhoselle Tus
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insurance agents ,organizational culture ,practices ,organization ,job satisfaction - Abstract
The emergence of different organizational cultures inside companies has been found to impact their overall success. It is the set of beliefs, values, and customs present in a workplace that influences the behavior of its employees. Meanwhile, job satisfaction is the employees’ contentment level with respect to different aspects of their job. Hence, this study employed a descriptive-correlational research design to investigate organizational culture's influence on insurance agents' job satisfaction. To gather the essential data and meet the objectives of this study, the Organizational Culture Assessment Instrument and Job Satisfaction Survey were distributed to the respondents. The data gathered were then computed and analyzed using regression analysis, revealing that organizational culture significantly influences satisfaction among insurance agents. These results were analyzed and interpreted, with implications and recommendations provided for better understanding and application for the stakeholders of this study.
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- 2023
- Full Text
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5. Number of Hepatic Resections and Association with Complication after Metastatic Neuroendocrine Tumor Debulking: An American College of Surgeons NSQIP Database Study
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Jason L Schwarz, Kristine M Kuchta, Aram Rojas, Syed Mehdi, Sung Hoon Choi, Xavier M Keutgen, Mark S Talamonti, and Melissa E Hogg
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Surgery - Published
- 2023
6. Data from A Panel of Four miRNAs Accurately Differentiates Malignant from Benign Indeterminate Thyroid Lesions on Fine Needle Aspiration
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Thomas J. Fahey, Olivier Elemento, Rasa Zarnegar, Martha A. Zeiger, David Cooper, Daniel Buitrago, Rana Hoda, Theresa Scognamiglio, Yongchun Wang, Michael J. Crowley, Filippo Filicori, and Xavier M. Keutgen
- Abstract
Purpose: Indeterminate thyroid lesions on fine needle aspiration (FNA) harbor malignancy in about 25% of cases. Hemi- or total thyroidectomy has, therefore, been routinely advocated for definitive diagnosis. In this study, we analyzed miRNA expression in indeterminate FNA samples and determined its prognostic effects on final pathologic diagnosis.Experimental Design: A predictive model was derived using 29 ex vivo indeterminate thyroid lesions on FNA to differentiate malignant from benign tumors at a tertiary referral center and validated on an independent set of 72 prospectively collected in vivo FNA samples. Expression levels of miR-222, miR-328, miR-197, miR-21, miR-181a, and miR-146b were determined using reverse transcriptase PCR. A statistical model was developed using the support vector machine (SVM) approach.Results: A SVM model with four miRNAs (miR-222, miR-328, miR-197, and miR-21) was initially estimated to have 86% predictive accuracy using cross-validation. When applied to the 72 independent in vivo validation samples, performance was actually better than predicted with a sensitivity of 100% and specificity of 86%, for a predictive accuracy of 90% in differentiating malignant from benign indeterminate lesions. When Hurthle cell lesions were excluded, overall accuracy improved to 97% with 100% sensitivity and 95% specificity.Conclusions: This study shows that that the expression of miR-222, miR-328, miR-197, and miR-21 combined in a predictive model is accurate at differentiating malignant from benign indeterminate thyroid lesions on FNA. These findings suggest that FNA miRNA analysis could be a useful adjunct in the management algorithm of patients with thyroid nodules. Clin Cancer Res; 18(7); 2032–8. ©2012 AACR.
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- 2023
7. Supplementary Table 2 from A Panel of Four miRNAs Accurately Differentiates Malignant from Benign Indeterminate Thyroid Lesions on Fine Needle Aspiration
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Thomas J. Fahey, Olivier Elemento, Rasa Zarnegar, Martha A. Zeiger, David Cooper, Daniel Buitrago, Rana Hoda, Theresa Scognamiglio, Yongchun Wang, Michael J. Crowley, Filippo Filicori, and Xavier M. Keutgen
- Abstract
PDF file - 78K
- Published
- 2023
8. Supplementary Table 1 from A Panel of Four miRNAs Accurately Differentiates Malignant from Benign Indeterminate Thyroid Lesions on Fine Needle Aspiration
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Thomas J. Fahey, Olivier Elemento, Rasa Zarnegar, Martha A. Zeiger, David Cooper, Daniel Buitrago, Rana Hoda, Theresa Scognamiglio, Yongchun Wang, Michael J. Crowley, Filippo Filicori, and Xavier M. Keutgen
- Abstract
PDF file - 76K
- Published
- 2023
9. Single Center Outcomes from Parenchymal-sparing Resections and Microwave Ablations for Neuroendocrine Tumor Liver Metastases
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Frances T. Lee, Jelani Williams, Rachel Nordgren, Jason L. Schwarz, Namrata Setia, Kevin Roggin, Blase Polite, Govind Rangrass, Chih-Yi Liao, J. Michael Millis, and Xavier M. Keutgen
- Abstract
Background: Surgical debulking of neuroendocrine tumor (NET) is used as a therapeutic approach for metastatic NETs in selected centers. Reported outcomes after parenchymal-sparing liver resections (PSR) in NET patients with high numbers of liver metastases are sparse. Methods: NET patients that underwent surgical debulking from 2019 to 2021 were reviewed. Trends in perioperative liver function was examined, as well as symptom response, complications, and progression free survival. Results: 1069 liver lesions (median=17) were debulked from 53 patients with a combination of PSR (45%) and ultrasound-guided microwave ablations (MWA) (55%). Post-operative transaminitis was proportional to the number of lesions debulked: Median POD1 AST was 681 IU/L for 1-15 lesions vs. 1396 IU/L for >15 lesions, p=0.01 (R2=0.271, pp=0.01 (R2=0.221, p9/L for 1-15 lesions vs. 109 x 109/L for >15 lesions, p=0.04; R2=0.163, p=0.003). Synthetic liver function measured by postoperative INR (median POD1 INR 1.3 vs 1.4, p=0.21) and total bilirubin (median POD 2 TB 1.35 vs 0.95 mg/dL; p=0.67) did not differ according to number of lesions debulked. 13% of patients sustained a Clavien-Dindo grade 3/4 complication which was not associated with the number of lesions targeted. All patients with preoperative symptoms had improvement after surgery. Median time to recurrence was 10.9 months. Conclusions: PSR with MWA for large numbers of NET liver metastases is safe and effective for symptom control and does not affect synthetic liver function. Transaminitis and thrombocytopenia are proportionate to the amount of liver lesions debulked.
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- 2023
10. Loss of MEN1 function impairs DNA repair capability of pancreatic neuroendocrine tumors
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Olga Lakiza, Julian Lutze, Alyx Vogle, Jelani Williams, Abde Abukdheir, Paul Miller, Chih-Yi ‘Andy’ Liao, Sean P Pitroda, Carlos Martinez, Andrea Olivas, Namrata Setia, Stephen J Kron, Ralph R Weichselbaum, and Xavier M Keutgen
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congenital, hereditary, and neonatal diseases and abnormalities ,endocrine system ,Cancer Research ,DNA Repair ,endocrine system diseases ,Endocrinology, Diabetes and Metabolism ,Poly(ADP-ribose) Polymerase Inhibitors ,Article ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,Endocrinology ,Oncology ,Proto-Oncogene Proteins ,Humans ,Poly(ADP-ribose) Polymerases - Abstract
Somatic MEN1 mutations occur in up to 50% of pancreatic neuroendocrine tumors (PanNETs). Clinical studies have shown that radiation therapy (IR) is effective in a subset of PanNETs, but it remains unclear why some patients respond better to IR than others. Herein, we study whether MEN1 loss of function increases radiosensitivity of PanNETs and determine its effect on DNA double-strand break (DSB) repair. After creating a MEN1 knockout PanNET cell line, we confirmed reduced DSB repair capacity in MEN1-deficient cells and linked these findings to a defect in homologous recombination, as well as reduced BRCA2 expression levels. Consistent with this model, we found that MEN1 mutant cells displayed increased sensitivity to the highly trapping poly (ADP-ribose) polymerase (PARP) 1 inhibitor talazoparib in vitro. Our results suggest that combining IR with PARP inhibition may be beneficial in patients with PanNETs and MEN1 loss of function.
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- 2022
11. Preclinical assessment of an optimized AAV-FVIII vector in mice and non-human primates for the treatment of hemophilia A
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Sean M. Armour, Mallory Willet, Marti A. DiPietro, Marco Crosariol, Stephanie Kutza, Raffaella Toso, Chuansong Wang, Katherine A. High, Robert J. Davidson, Jennifer Frick, Xavier M. Anguela, Liron Elkouby, Yuhuan Wang, Giang N. Nguyen, Denise E. Sabatino, and Joseph Silverberg
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optimized vectors ,viruses ,Genetic enhancement ,Transgene ,QH426-470 ,codon optimization ,Immune system ,Genetics ,Potency ,Medicine ,Vector (molecular biology) ,Molecular Biology ,Gene ,QH573-671 ,business.industry ,AAV ,Orders of magnitude (mass) ,low AAV dose ,Capsid ,Immunology ,Molecular Medicine ,Original Article ,hemophilia A ,Cytology ,business ,preclinical development - Abstract
Extensive clinical data from liver-mediated gene therapy trials have shown that dose-dependent immune responses against the vector capsid may impair or even preclude transgene expression if not managed successfully with prompt immune suppression. The goal of this preclinical study was to generate an adeno-associated viral (AAV) vector capable of expressing therapeutic levels of B-domain deleted factor VIII (FVIII) at the lowest possible vector dose to minimize the potential Risk of a capsid-mediated immune response in the clinical setting. Here, we describe the studies that identified the investigational agent SPK-8011, currently being evaluated in a phase 1/2 study (NCT03003533) in individuals with hemophilia A. In particular, the potency of our second-generation expression cassettes was evaluated in mice and in non-human primates using two different bioengineered capsids (AAV-Spark100 and AAV-Spark200). At 2 weeks after gene transfer, primates transduced with 2 × 1012 vg/kg AAV-Spark100-FVIII or AAV-Spark200-FVIII expressed FVIII antigen levels of 13% ± 2% and 22% ± 6% of normal, respectively. Collectively, these preclinical results validate the feasibility of lowering the AAV capsid dose for a gene-based therapeutic approach for hemophilia A to a dose level orders of magnitude lower than the first-generation vectors in the clinic., Graphical Abstract, The studies presented here represent the proof-of-concept work that generated the investigational agent SPK-8011, currently being evaluated in a phase 1/2 study (NCT03003533) for treatment of hemophilia A. Through a multi-pronged optimization approach, an adeno-associated viral vector capable of expressing therapeutic levels of hFVIII at the lowest possible vector dose was generated.
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- 2022
12. Connecting Cohorts to Diminish Alzheimer’s Disease (CONCORD-AD): A Report of an International Research Collaboration Network
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Samantha C. Burnham, Valory N. Pavlik, Rachelle Doody, Catherine Helmer, Ronald C. Petersen, Karine Pérès, Preciosa M. Coloma, Oskar Hansson, Sebastian Palmqvist, Lesley M. Butler, Joseph S. Kass, Maria Vassilaki, Mary Sano, Erik Stomrud, Colin L. Masters, Xavier M Teitsma, Jean-François Dartigues, Concord-Ad investigators, Baylor College of Medicine (BCM), Baylor University, CSIRO Health and Biosecurity [Australia], Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Lund University [Lund], Skane University Hospital [Lund], Mayo Clinic [Rochester], CHU Bordeaux [Bordeaux], University of Melbourne, F. Hoffmann-La Roche [Basel], Genentech, Inc. [San Francisco], Icahn School of Medicine at Mount Sinai [New York] (MSSM), James J. Peters VA Medical Center [New York], CONCORD-AD investigators, and Admin, Oskar
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Gerontology ,Population ageing ,International Cooperation ,Population ,Disease ,Cohort Studies ,Computer Communication Networks ,Cognition ,Alzheimer Disease ,Observational study ,medicine ,Humans ,Dementia ,education ,Aged ,education.field_of_study ,General Neuroscience ,Cohort ,General Medicine ,medicine.disease ,Population characteristics ,Observational Studies as Topic ,Psychiatry and Mental health ,Clinical Psychology ,[SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,Cognitive function ,Geriatrics and Gerontology ,Psychology ,Alzheimer’s disease ,Biomarkers ,CONCORD-AD network ,Cohort study - Abstract
International audience; Longitudinal observational cohort studies are being conducted worldwide to understand cognition, biomarkers, and the health of the aging population better. Cross-cohort comparisons and networks of registries in Alzheimer's disease (AD) foster scientific exchange, generate insights, and contribute to the evolving clinical science in AD. A scientific working group was convened with invited investigators from established cohort studies in AD, in order to form a research collaboration network as a resource to address important research questions. The Connecting Cohorts to Diminish Alzheimer's Disease (CONCORD-AD) collaboration network was created to bring together global resources and expertise, to generate insights and improve understanding of the natural history of AD, to inform design of clinical trials in all disease stages, and to plan for optimal patient access to disease-modifying therapies once they become available. The network brings together expertise and data insights from 7 cohorts across Australia, Europe, and North America. Notably, the network includes populations recruited through memory clinics as well as population-based cohorts, representing observations from individuals across the AD spectrum. This report aims to introduce the CONCORD-AD network, providing an overview of the cohorts involved, reporting the common assessments used, and describing the key characteristics of the cohort populations. Cohort study designs and baseline population characteristics are compared, and available cognitive, functional, and neuropsychiatric symptom data, as well as the frequency of biomarker assessments, are summarized. Finally, the challenges and opportunities of cross-cohort studies in AD are discussed.
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- 2022
13. All-Trans Retinoic Acid Radiosensitizes Neuroendocrine Tumor Cells via Peptidyl-Prolyl Cis-Trans Isomerase 1 Inhibition
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Jelani K. Williams, Jason L. Schwarz, Olga Lakiza, Stephen Kron, Ralph R Weichselbaum, and Xavier M. Keutgen
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- 2023
14. Inhibition of Estrogen Receptor Alpha Radiosensitizes Neuroendocrine Tumors
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Jason L. Schwarz, Jelani K. Williams, Olga Lakiza, Stephen J. Kron, Ralph R. Weichselbaum, and Xavier M. Keutgen
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- 2023
15. Lisa Allen, A Womanist Theology of Worship: Liturgy, Justice, and Communal Righteousness
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Xavier M. Montecel
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A review of Lisa Allen, A Womanist Theology of Worship: Liturgy, Justice, and Communal Righteousness.
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- 2023
16. PEDAGOGIA DO PARADESPORTO
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Alessandro Tosim, Aline Miranda Strapasson, Altemir Tramp, André Xavier M. Alvares, Bruna Bredariol, Eduardo Leonel, Elke Lima Trigo, Ester Noguera, Fabiano Quirino da Silva Pereira, Flávio Anderson Pedrosa de Melo, Jacqueline Martins Patatas, João Paulo Casteleti de Souza, José Agtônio Guedes Dantas, José Paulo Sabadini de Lima, Larissa Rafaela Galatti, Leandro Ribela, Luis Felipe Castelli Correia de Campos, Luís Gustavo de Souza Pena, Marcio Pereira Morato, Marcos Motta Miranda, Mariana Simões Pimentel Gomes, Mário Antônio de Moura Simim, Mariane Ferreira, Mariona Masdemont, Marta Cristina Lopes, Mey de Abreu van Munster, Murilo Arsenio Spina, Paulo Cesar Montagner, Paulo Alberto Veiga Cabral, Raphael Moreira de Almeida, Rosecler Ravache, Rubens Venditti Junior, Sylvana Mestre, Taylor Brian Lavinscky Pereira, Thiago Pupo Fonseca, Vagner Lopes Lima, and Miguel de Arruda
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- 2023
17. Relationship between the Adherence to National Competency-Based Standards and the Professional Profile of School Heads in Northern Samar, Philippines
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Xavier M. Ultra
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Medical education ,Political science ,education ,Geography, Planning and Development ,Management, Monitoring, Policy and Law ,health care economics and organizations - Abstract
A descriptive study sought to determine the school heads’ adherence to the national competency-based standards and its relationship to the professional profile of the school heads in the Division of Northern Samar was done. This study used the descriptive-correlational research design which the questionnaire was patterned from studies on leadership and National Competency-Based Standards for School Heads (NCBS-SH) TDNA tool. Elementary schools were proportionally sampled by district/municipality while secondary schools were proportionally sampled by legislative districts of the province of Northern Samar. The respondents answered a survey questionnaire developed from the standards of Department of Education. This study found out that most of the school heads have earned master’s degree, are principal’s test passers, had more than 10 years of administrative and supervisory experience and had limited number of exposures to trainings. All the indicators of leadership skills were very highly observed. On the test of relationship between the professional profile of the school heads and their adherence to National Competency-Based Standards, administrative and supervisory experience and NCBS-SH domains on school leadership, instructional leadership, HR management and professional development were found to be significantly correlated. Also, administrative, and supervisory trainings attended and NCBS-SH domains on school leadership, instructional leadership, HR management and professional development were found to be significantly correlated. Respondents’ leadership skills and NCBS-SH domains, leadership skills have significant correlation to all the NCBS-SH domains. From the test of relationship between the professional profile of the school heads and the school performance, only eligibility and administrative and supervisory experience are significantly correlated to SBM level of practice. The test of relationships between school heads’ adherence to national competency-based standards and school performance, the school leadership is significantly correlated to SBM level of practice.
- Published
- 2021
18. Epigenetic Dysregulation of 5-hydroxymethylcytosine in Well-Differentiated Pancreatic Neuroendocrine Tumors
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Namrata Setia, Megan Parilla, Lindsay Yassan, Andrea D Olivas, Thomas Krausz, Aarti E Sharma, Xavier M. Keutgen, Sharon S. Zhang, Hanlin Wang, Christopher R. Weber, and John Hart
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Oncology ,medicine.medical_specialty ,Histology ,Proliferation index ,Lymphovascular invasion ,Neuroendocrine tumors ,Epigenesis, Genetic ,Pathology and Forensic Medicine ,chemistry.chemical_compound ,Text mining ,Internal medicine ,Mitotic Index ,medicine ,Humans ,Epigenetics ,5-Hydroxymethylcytosine ,business.industry ,Odds ratio ,medicine.disease ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,Medical Laboratory Technology ,chemistry ,5-Methylcytosine ,Immunohistochemistry ,Female ,business - Abstract
Dysregulation of epigenetic mechanisms, reflected by loss of expression of 5-hydroxymethylcytosine (5-hmC) is being increasingly recognized as a marker of aggressive behavior in several neoplasms; however, the role of such epigenetic modifiers in pancreatic neuroendocrine tumors (PanNETs) has not been studied. Annotated cohort of 60 PanNETs was evaluated for 5-hmC expression using immunohistochemistry. Univariable and multivariable analyses were performed. To determine intratumor heterogeneity of 5-hmC expression, 26 additional synchronous metastatic deposits of PanNETs from 8 patients were evaluated for 5-hmC expression. 5-hmC level showed significant association with the presence of distant metastases (P=0.02), female sex (P=0.04), and Ki-67 proliferation index (P=0.002). A multivariate model created using the stepwise logistic regression analysis showed the presence of nodal metastases (odds ratio=6.15), lymphovascular invasion (odds ratio=4.07) and lack of 5-hmC expression (odds ratio=5.34) were predictive of the risk of distant metastasis in PanNETs with a c-statistic of 0.845. Epigenetic intratumoral heterogeneity of 5-hmC expression was seen in 37.5% cases (3/8). Our work provides evidence that epigenetic regulators are involved in the pathobiology of PanNETs and immunohistochemical analysis of 5-hmC may be able to refine prognostic evaluation of these tumors.
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- 2021
19. Role of machine learning in differentiating benign from malignant indeterminate thyroid nodules: A literature review
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Julian M. Conn Busch, Joseph L. Cozzi, Hui Li, Li Lan, Maryellen L. Giger, and Xavier M. Keutgen
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- 2023
20. Classification, Prediction, and Concordance of Cognitive and Functional Progression in Patients with Mild Cognitive Impairment in the United States: A Latent Class Analysis
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Mihaela V. Georgieva, Neema Lema, Lesley M. Butler, Raluca Ionescu-Ittu, Urvi Desai, JingJing Zhu, Thomas Kulalert, Keith A. Betts, Xavier M Teitsma, Paul Delmar, and Julie Mouchet
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medicine.medical_specialty ,Clinical Dementia Rating ,Concordance ,03 medical and health sciences ,mild cognitive impairment ,Cognition ,0302 clinical medicine ,Internal medicine ,mental disorders ,latent class analysis ,medicine ,Humans ,Dementia ,Cognitive Dysfunction ,030212 general & internal medicine ,Aged ,Aged, 80 and over ,Models, Statistical ,business.industry ,General Neuroscience ,Age Factors ,General Medicine ,Odds ratio ,Physical Functional Performance ,Mental Status and Dementia Tests ,medicine.disease ,Functional Activities Questionnaire ,United States ,Latent class model ,Confidence interval ,Psychiatry and Mental health ,Clinical Psychology ,Disease Progression ,progression ,Geriatrics and Gerontology ,business ,Alzheimer’s disease ,030217 neurology & neurosurgery ,Research Article - Abstract
Background: Progression trajectories of patients with mild cognitive impairment (MCI) are currently not well understood. Objective: To classify patients with incident MCI into different latent classes of progression and identify predictors of progression class. Methods: Participants with incident MCI were identified from the US National Alzheimer’s Coordinating Center Uniform Data Set (09/2005-02/2019). Clinical Dementia Rating (CDR®) Dementia Staging Instrument-Sum of Boxes (CDR-SB), Functional Activities Questionnaire (FAQ), and Mini-Mental State Examination (MMSE) score longitudinal trajectories from MCI diagnosis were fitted using growth mixture models. Predictors of progression class were identified using multivariate multinomial logistic regression models; odds ratios (ORs) and 95% confidence intervals (CIs) were reported. Results: In total, 21%, 22%, and 57% of participants (N = 830) experienced fast, slow, and no progression on CDR-SB, respectively; for FAQ, these figures were 14%, 23%, and 64%, respectively. CDR-SB and FAQ class membership was concordant for most participants (77%). Older age (≥86 versus≤70 years, OR [95% CI] = 5.26 [1.78–15.54]), one copy of APOE ɛ4 (1.94 [1.08–3.47]), higher baseline CDR-SB (2.46 [1.56–3.88]), lower baseline MMSE (0.85 [0.75–0.97]), and higher baseline FAQ (1.13 [1.02–1.26]) scores were significant predictors of fast progression versus no progression based on CDR-SB (all p
- Published
- 2021
21. Preoperative serum chromogranin-a is predictive of survival in locoregional jejuno-ileal small bowel neuroendocrine tumors
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James D. McDonald, Xavier M. Keutgen, Tahsin M Khan, Praveen D. Chatani, Naris Nilubol, and John G. Aversa
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Adult ,Male ,endocrine system ,medicine.medical_specialty ,Adolescent ,Databases, Factual ,medicine.medical_treatment ,Kaplan-Meier Estimate ,Neuroendocrine tumors ,Gastroenterology ,Article ,Young Adult ,Predictive Value of Tests ,Internal medicine ,Humans ,Medicine ,Jejuno-ileal ,Lymph node ,Aged ,Aged, 80 and over ,Jejunal Neoplasms ,biology ,business.industry ,Cancer ,Chromogranin A ,Middle Aged ,Prognosis ,medicine.disease ,Ileal Neoplasms ,Neuroendocrine Tumors ,Lymphatic system ,medicine.anatomical_structure ,Preoperative Period ,Cohort ,biology.protein ,Lymph Node Excision ,Female ,Surgery ,Lymphadenectomy ,business - Abstract
BACKGROUND: Small bowel neuroendocrine tumors (SB-NET) frequently metastasize to regional lymphatic or distant sites. While most prognostication of SB-NET focuses on lymph node involvement, findings from studies of NETs from other primary sites have suggested that preoperative serum chromogranin-A (CgA) levels may provide a more accurate metric. STUDY DESIGN: Using the National Cancer Database (2004–2016), we analyzed patients with locoregional SB-NET who underwent curative resection including an adequate lymphadenectomy (n = 1,274). A statistically optimized cut-point was used to dichotomize CgA cohort based on preoperative serum CgA levels. RESULTS: We determined that a CgA ≥139ng/mL identified patients with significantly shorter estimated mean overall survival (6.6 years vs. 7.6 years, log-rank p = 0.00001). These patients were also older (63 vs. 57 years, p < 0.001) and more likely to have poorly-differentiated tumors (2.1% vs. 0.7%, p = 0.04) or primary tumors >1cm (88.2% vs. 79.2%, p = 0.001). Clinical features associated with shorter overall survival included preoperative CgA ≥139ng/mL (HR = 2.19, 95% CI 1.22 – 3.92; p = 0.009), age at diagnosis (HR = 1.06, 95% CI 1.03 – 1.09; p < 0.001), Charlson-Deyo score ≥2 (HR = 3.93, 95% CI 1.71 – 9.01; p = 0.001), and poorly-differentiated tumors (HR = 11.22, 95% CI 4.16 – 30.24; p < 0.001). Neither lymph node metastasis nor T-stage were independently associated with shorter overall survival in patients with locoregional SB-NET. CONCLUSIONS: Elevated preoperative serum CgA is an adverse prognostic marker associated with shorter overall survival in patients with locoregional SB-NET.
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- 2021
22. Sunitinib-Loaded Chondroitin Sulfate Hydrogels as a Novel Drug-Delivery Mechanism for the Treatment of Pancreatic Neuroendocrine Tumors
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Olga Lakiza, Namrata Setia, Alyx Vogle, Ralph R. Weichselbaum, Katelyn S Mistretta, Xavier M. Keutgen, Paul R. Miller, Kimberly J. Ornell, Jeannine M. Coburn, and Jelani Williams
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030230 surgery ,Neuroendocrine tumors ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,Drug Delivery Systems ,0302 clinical medicine ,Cell Line, Tumor ,Sunitinib ,medicine ,Animals ,Chondroitin sulfate ,Cytotoxicity ,integumentary system ,business.industry ,Chondroitin Sulfates ,Hydrogels ,Sunitinib malate ,medicine.disease ,In vitro ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,Oncology ,chemistry ,030220 oncology & carcinogenesis ,Drug delivery ,Self-healing hydrogels ,Cancer research ,Surgery ,business ,medicine.drug - Abstract
Pancreatic neuroendocrine tumors (PanNETs) are increasingly common. Experts debate whether small tumors should be resected. Tumor destruction via injection of cytotoxic agents could offer a minimal invasive approach to this controversy. We hypothesize that a new drug delivery system comprising chondroitin sulfate (CS) hydrogels loaded with sunitinib (SUN) suppresses tumor growth in PanNET cells. Injectable hydrogels composed of CS modified with methacrylate groups (MA) were fabricated and loaded with SUN. Loading target was either 200 µg (SUN200-G) or 500 µg (SUN500-G) as well as sham hydrogel with no drug loading (SUN0-G). SUN release from hydrogels was monitored in vitro over time and cytotoxicity induced by the released SUN was evaluated using QGP-1 and BON1 PanNET cell lines. QGP-1 xenografts were developed in 35 mice and directly injected with 25 µL of either SUN200-G, SUN500-G, SUN0-G, 100 µL of Sunitinib Malate (SUN-inj), or given 40 mg/kg/day oral sunitinib (SUN-oral). SUN-loaded CSMA hydrogel retained complete in vitro cytotoxicity toward the QGP-1 PanNET and BON-1 PanNET cell lines for 21 days. Mouse xenograft models with QGP-1 PanNETs showed a significant delay in tumor growth in the SUN200/500-G, SUN-inj and SUN-oral groups compared with SUN0-G (p = 0.0014). SUN500-G hydrogels induced significantly more tumor necrosis than SUN0-G (p = 0.04). There was no difference in tumor growth delay between SUN200/500G, SUN-inj, and SUN-oral. This study demonstrates that CSMA hydrogels loaded with SUN suppress PanNETs growth. This drug delivery could approach represents a novel way to treat PanNETs and other neoplasms via intratumoral injection.
- Published
- 2021
23. Metastatic well-differentiated pancreatic neuroendocrine tumors to the liver: a narrative review of systemic and surgical management
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Tanaz Vaghaiwalla, Chih-Yi Liao, Kelvin Memeh, and Xavier M. Keutgen
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Pathology ,medicine.medical_specialty ,Hepatology ,business.industry ,Endocrinology, Diabetes and Metabolism ,RC799-869 ,Diseases of the digestive system. Gastroenterology ,Neuroendocrine tumors ,medicine.disease ,Well differentiated ,Endocrinology ,Medicine ,Narrative review ,business - Abstract
Pancreatic neuroendocrine tumors (PNETs) are a rare group of neoplasms originating from the endocrine pancreas. PNETs are classified as functional or non-functional tumors. PNETs are more often diagnosed at a higher stage with distant metastases or advanced locoregional disease. The majority of individuals with hepatic metastases will ultimately die of liver failure; therefore, the treatment of liver tumor burden is critical to providing a survival impact. While surgical resection remains the only chance of cure for disease confined to the pancreas or for locoregional disease, the treatment of advanced or metastatic PNETs is more complex and often requires a multimodal approach. This review focuses on treatment options for well and moderately differentiated PNETs with metastatic disease to the liver. These include surgery, liver-directed therapies including ablative and intra-arterial therapies, and systemic therapies such as somatostatin analogues, targeted therapies, chemotherapy, and peptide receptor radionuclide therapy. Developing an individualized treatment strategy requires careful assessment of liver tumor burden and predicted biological behavior. Aggressive surgical resection of hepatic metastases secondary to PNET primary tumors is associated with improved survival in multiple retrospective studies. General goals of treatment for metastatic disease include prolonging overall survival and progression free survival, improving quality of life, and control of symptoms.
- Published
- 2021
24. Systemic and Ocular Adverse Events with Intravitreal Anti-VEGF Therapy Used in the Treatment of Diabetic Retinopathy: a Review
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Jason A, Zehden, Xavier M, Mortensen, Ashvini, Reddy, and Alice Yang, Zhang
- Subjects
Bevacizumab ,Vascular Endothelial Growth Factor A ,Endophthalmitis ,Diabetic Retinopathy ,Ranibizumab ,Intravitreal Injections ,Diabetes Mellitus ,Humans ,Angiogenesis Inhibitors ,Macular Edema ,Vitreous Hemorrhage - Abstract
Intravitreal anti-vascular endothelial growth factor (VEGF) agents are used routinely in the management of neovascular conditions including proliferative diabetic retinopathy and diabetic macular edema. While the efficacy of anti-VEGF agents has been well-validated, their ocular and systemic adverse events should always be considered and discussed with patients. The aim of this review is to discuss the most recent literature reports regarding the various ocular and systemic adverse events associated with intravitreal anti-VEGF treatment in diabetic retinopathy.The most frequently reported adverse ocular events include subconjunctival hemorrhage, vitreous hemorrhage, increased intraocular pressure, uveitis, endophthalmitis, ocular surface disease, and traumatic cataract. Subconjunctival hemorrhage and vitreous hemorrhage are the most common ocular adverse events reported with intravitreal anti-VEGF treatment. The most serious (though rare) ocular adverse events include endophthalmitis and rhegmatogenous retinal detachment. A consensus regarding the association of systemic adverse events (such as myocardial infarction, stroke, and death) with intravitreal anti-VEGF treatments has not been established. Intravitreal anti-VEGF therapy is used in the treatment of diabetic retinopathy, macular degeneration, and other diseases. These agents are associated with a variety of ocular and systemic adverse events that ophthalmologists should always consider.
- Published
- 2022
25. Deep learning prediction of BRAF-RAS gene expression signature identifies noninvasive follicular thyroid neoplasms with papillary-like nuclear features
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Alexander T. Pearson, James M. Dolezal, Anna Trzcinska, Xavier M. Keutgen, Nishant Agrawal, Peter Angelos, Sara Kochanny, Elizabeth A. Blair, Chih-Yi Liao, and Nicole A. Cipriani
- Subjects
Proto-Oncogene Proteins B-raf ,0301 basic medicine ,Pathology ,medicine.medical_specialty ,Carcinoma, Papillary, Follicular ,Article ,Pathology and Forensic Medicine ,Thyroid carcinoma ,03 medical and health sciences ,Deep Learning ,0302 clinical medicine ,Text mining ,Follicular phase ,Gene expression ,medicine ,Humans ,Neoplasm ,Thyroid Neoplasms ,Nuclear atypia ,Head and neck cancer ,business.industry ,Gene Expression Profiling ,fungi ,Thyroid ,Diagnostic markers ,medicine.disease ,Gene Expression Regulation, Neoplastic ,Thyroid diseases ,Tumor Subtype ,030104 developmental biology ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Mutation ,ras Proteins ,Transcriptome ,business - Abstract
Noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTP) are follicular-patterned thyroid neoplasms defined by nuclear atypia and indolent behavior. They harbor RAS mutations, rather than BRAFV600E mutations as is observed in papillary thyroid carcinomas with extensive follicular growth. Reliably identifying NIFTPs aids in safe therapy de-escalation, but has proven to be challenging due to interobserver variability and morphologic heterogeneity. The genomic scoring system BRS (BRAF-RAS score) was developed to quantify the extent to which a tumor’s expression profile resembles a BRAFV600E or RAS-mutant neoplasm. We proposed that deep learning prediction of BRS could differentiate NIFTP from other follicular-patterned neoplasms. A deep learning model was trained on slides from a dataset of 115 thyroid neoplasms to predict tumor subtype (NIFTP, PTC-EFG, or classic PTC), and was used to generate predictions for 497 thyroid neoplasms within The Cancer Genome Atlas (TCGA). Within follicular-patterned neoplasms, tumors with positive BRS (RAS-like) were 8.5 times as likely to carry an NIFTP prediction than tumors with negative BRS (89.7% vs 10.5%, P
- Published
- 2021
26. Response rates in metastatic neuroendocrine tumors receiving peptide receptor radionuclide therapy and implications for future treatment strategies
- Author
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Chih-Yi Liao, Blase N. Polite, Kelvin Memeh, Edwin L. Kaplan, Brian Ruhle, Tanaz Vaghaiwalla, Xavier M. Keutgen, and Peter Angelos
- Subjects
Male ,Oncology ,medicine.medical_specialty ,medicine.medical_treatment ,030230 surgery ,Neuroendocrine tumors ,Octreotide ,Drug Administration Schedule ,Targeted therapy ,03 medical and health sciences ,0302 clinical medicine ,Coordination Complexes ,Stomach Neoplasms ,Internal medicine ,Intestinal Neoplasms ,Organometallic Compounds ,medicine ,Humans ,Infusions, Intravenous ,Prospective cohort study ,Response Evaluation Criteria in Solid Tumors ,Aged ,Neoplasm Staging ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,Middle Aged ,medicine.disease ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,Treatment Outcome ,medicine.anatomical_structure ,Somatostatin ,Positron-Emission Tomography ,030220 oncology & carcinogenesis ,Radionuclide therapy ,Female ,Surgery ,business ,Pancreas - Abstract
Background Peptide receptor radionuclide therapy is a targeted therapy used to treat unresectable somatostatin receptor-positive neuroendocrine tumors. The objective of this study was to evaluate response rates among neuroendocrine tumors of different primaries and identify factors relevant to future treatment strategies. Methods We retrospectively reviewed patients who received peptide receptor radionuclide therapy for neuroendocrine tumors from 2018 to 2019 at our institution. Patients were assessed with computed tomography/magnetic resonance imaging and 68Ga-DOTATATE-positron emission tomography before and after 2 or 4 cycles of peptide receptor radionuclide therapy. Tumor response was evaluated by RECIST 1.1. Statistics included multinomial logistic regression models and Fisher exact test. Results Twenty-seven patients underwent 92 cycles of peptide receptor radionuclide therapy: pancreas (n = 11), small bowel (n = 7), and other (n = 9) neuroendocrine tumors. Overall, 30% (8 of 27) had partial response, 59% (16 of 27) stable disease, and 11% (3 of 27) progressed. Pancreatic neuroendocrine tumors responded differently from small bowel neuroendocrine tumors regardless of cycle number (P = .01). The majority of pancreatic neuroendocrine tumors (6 of 11) had partial response to peptide receptor radionuclide therapy, while all small bowel neuroendocrine tumors had stable disease. Pancreatic neuroendocrine tumors stable after 2 cycles were more likely to respond to additional cycles versus other neuroendocrine tumors (probability: 60% vs 11%). Conclusion Patients with unresectable advanced or metastatic pancreatic neuroendocrine tumors may benefit from a full course of peptide receptor radionuclide therapy, whereas other neuroendocrine tumors appear less likely to respond. Large prospective studies are needed to confirm these findings.
- Published
- 2021
27. Indoleamine 2,3-Dioxygenase-1 Expression in Adrenocortical Carcinoma
- Author
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Alyx Vogle, Paolo Gattuso, Brendan M. Finnerty, Rasa Zarnegar, Ritu Ghai, John F. Tierney, Xavier M. Keutgen, and Thomas J. Fahey
- Subjects
Male ,Stromal cell ,Programmed Cell Death 1 Receptor ,Cell ,CD8-Positive T-Lymphocytes ,03 medical and health sciences ,Lymphocytes, Tumor-Infiltrating ,0302 clinical medicine ,Stroma ,Antineoplastic Combined Chemotherapy Protocols ,Adrenocortical Carcinoma ,Biomarkers, Tumor ,medicine ,Humans ,Indoleamine-Pyrrole 2,3,-Dioxygenase ,Adrenocortical carcinoma ,Adrenal adenoma ,Indoleamine 2,3-dioxygenase ,Immune Checkpoint Inhibitors ,Retrospective Studies ,business.industry ,Programmed Cell Death 1 Ligand 2 Protein ,medicine.disease ,Adrenal Cortex Neoplasms ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Adrenal Cortex ,Cancer research ,Immunohistochemistry ,Female ,030211 gastroenterology & hepatology ,Surgery ,business ,CD8 - Abstract
Background Indoleamine 2,3-dioxygenase 1 (IDO-1) is overexpressed in many human carcinomas and a successful target for therapy in mouse models. Prognosis of patients with advanced adrenocortical carcinoma (ACC) is poor due to the lack of effective treatments, and new therapies are therefore needed. Herein, we investigate whether IDO-1 is expressed in human ACC tissues. Methods 53 tissue samples from patients with ACC, adrenal adenoma (AA), adrenocortical tumors (ACTs), and normal adrenal were identified. Immunohistochemistry was performed on formalin-fixed, paraffin-embedded slides for IDO-1. Samples were scored for cytoplasmic staining as per intensity and the percent of positive cells and for stromal staining by percent of positive cells. Tumor characteristics, PD-L1, PDL-2, and CD-8+ T-lymphocyte expression were also determined. Results Samples from 32 ACC, 3 ACT, 15 AA, and 3 normal adrenal were analyzed. IDO-1 was expressed in tumor tissue in 22 of 32 ACC samples, compared with 8 of 15 AA sample (P = 0.344). IDO-1 expression was significantly increased in stromal tissue of ACC samples (16 of 33), compared with AA samples (0 of 15) (P = 0.001). IDO-1 expression in ACC and AA samples was associated with PD-L2 expression (P = 0.034). IDO-1 expression in ACC stromal tissue was associated with CD8+ T-lymphocyte infiltration (P = 0.028). Conclusions IDO-1 is expressed in a majority of ACC samples. Its expression in tumor tissue is associated with PD-L2 expression, and expression in stroma is associated with CD8+ cell infiltration. IDO-1 inhibition, alone or in combination with PD-1 inhibition, could therefore be an interesting target in treatment of ACC.
- Published
- 2020
28. Upper airways dysmorphology and obstructive sleeping apnea in Down syndrome
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Neus Martínez Abadías, Luis Miguel Echeverry, Laura Maréchal, Sandra M. Giménez, Xavier M. Sevillano, Juan M. Fortea, and Yann Heuzé
- Subjects
Genetics ,Molecular Biology ,Biochemistry ,Biotechnology - Published
- 2022
29. Risk factors associated with positive resection margins in patients with adrenocortical carcinoma
- Author
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Sitaram V. Chivukula, Jennifer Poirier, John F. Tierney, Nasim T. Babazadeh, Nicholas J. Skertich, Xavier M. Keutgen, and Martin Hertl
- Subjects
Adult ,Male ,Oncology ,medicine.medical_specialty ,medicine.medical_treatment ,Resection ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,Adrenocortical Carcinoma ,Positive Margins ,medicine ,Humans ,Adrenocortical carcinoma ,In patient ,Aged ,Retrospective Studies ,Adjuvant radiotherapy ,business.industry ,Margins of Excision ,General Medicine ,Middle Aged ,medicine.disease ,Adrenal Cortex Neoplasms ,United States ,Survival Rate ,Lymphatic Metastasis ,030220 oncology & carcinogenesis ,Female ,030211 gastroenterology & hepatology ,Surgery ,business ,Adjuvant ,psychological phenomena and processes ,Follow-Up Studies - Abstract
Positive resection margins are associated with worse survival after surgery for adrenocortical carcinoma (ACC). We aimed to identify risk factors for positive margins post-resection.The NCDB was queried for ACC patients from 2006 to 2015. Patients with positive versus negative resection margins post-surgery were compared using Chi-square tests. Survival based on adjuvant treatment was assessed using Kaplan-Meier curves.1,973 patients with ACC were identified, 217 (11.0%) with positive margins. Multivariable analysis identified extra-adrenal extension (HR 4.92, p 0.001), lymph node metastases (HR 2.64, p = 0.001), and distant metastases (HR 1.53, p = 0.03) as risk factors for positive margins. No significant difference in margin status existed between patients who had an open versus minimally invasive procedure (p = 0.6). Positive margin patients receiving adjuvant radiation (p = 0.007) or combined chemo-radiation (p = 0.001) had the longest survival.No modifiable risk factors were identified, but patients with positive margins receiving adjuvant radiation or chemo-radiation had the longest survival.
- Published
- 2020
30. The Chicago Consensus on peritoneal surface malignancies: Management of desmoplastic small round cell tumor, breast, and gastrointestinal stromal tumors
- Author
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Ryan P. Merkow, Shu-Yuan Xiao, Francisco J. Izquierdo, Erin W. Gilbert, Michael D. Kluger, Martin D. Goodman, Kaitlyn J. Kelly, Melvy Sarah Mathew, Alejandro Plana, Laura A. Lambert, Brian D. Badgwell, Joshua M. V. Mammen, Daniel E. Abbott, Anand Govindarajan, Aliya N. Husain, Aytekin Oto, H. Richard Alexander, Jason M. Foster, Namrata Setia, Andrew M. Lowy, Travis E. Grotz, Blase N. Polite, Nita Ahuja, Fabian M. Johnston, Colette R. Pameijer, Hedy L. Kindler, Daniel V.T. Catenacci, Robert M. Barone, Konstantinos I. Votanopoulos, T. Clark Gamblin, Joel M. Baumgartner, James C. Cusack, George I. Salti, Callisia N. Clarke, Carla Harmath, Maheswari Senthil, Clifford S. Cho, Mazin Al‐Kasspooles, Joshua H. Winer, Oliver S. Eng, Grace Z. Mak, Giorgos C. Karakousis, Charles Komen Brown, Lucas Sideris, David L. Bartlett, Carlos H. F. Chan, Abraham H. Dachman, Andrea Hayes-Jordan, Kamran Idrees, Kiran K. Turaga, Xavier M. Keutgen, Rhonda K. Yantiss, Vadim Gushchin, Darryl Schuitevoerder, Sean P. Dineen, M. Haroon A. Choudry, James Fleshman, Dan G. Blazer, David Jiang, Daniel M. Labow, Byrne Lee, Scott K. Sherman, Sam G. Pappas, Patricio M. Polanco, Michael G. White, Alexandra Gangi, Sanjay S. Reddy, Marcovalerio Melis, Paul H. Sugarbaker, Ugwuji N. Maduekwe, Nelya Melnitchouk, Farin Amersi, Timothy J. Kennedy, Jeremiah L. Deneve, Lloyd A. Mack, Jesus Esquivel, Sherif Abdel-Misih, Harveshp Mogal, Armando Sardi, Leopoldo J. Fernandez, Sandy Tun, Wilbur B. Bowne, Charles A. Staley, Lana Bijelic, Richard E. Royal, Chukwuemeka Ihemelandu, Joseph Skitzki, Nader Hanna, John M. Kane, Richard N. Berri, Amanda K. Arrington, Georgios V. Georgakis, Jula Veerapong, Mecker G. Möller, and Edward A. Levine
- Subjects
Chicago ,Cancer Research ,Pathology ,medicine.medical_specialty ,Consensus ,Stromal cell ,Peritoneal surface ,Desmoplastic small-round-cell tumor ,Gastrointestinal Stromal Tumors ,business.industry ,Breast Neoplasms ,Desmoplastic Small Round Cell Tumor ,medicine.disease ,Oncology ,Physicians ,Practice Guidelines as Topic ,Humans ,Medicine ,Interdisciplinary Communication ,Female ,business ,Peritoneal Neoplasms ,Gastrointestinal Neoplasms - Abstract
The Chicago Consensus Working Group provides multidisciplinary recommendations for the management of desmoplastic small round cell tumor, breast, and gastrointestinal stromal tumor specifically related to peritoneal surface malignancy. These guidelines are developed with input from leading experts including surgical oncologists, medical oncologists, pathologists, radiologists, palliative care physicians, and pharmacists. These guidelines recognize and address the emerging need for increased awareness in the appropriate management of peritoneal surface disease. They are not intended to replace the quest for higher levels of evidence.
- Published
- 2020
31. The Chicago Consensus on peritoneal surface malignancies: Palliative care considerations
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Georgios V. Georgakis, Carlos H. F. Chan, George I. Salti, Jula Veerapong, Michael D. Kluger, Timothy J. Kennedy, Maheswari Senthil, Lana Bijelic, Edward A. Levine, Monica Malec, Charles A. Staley, Sanjay S. Reddy, Anand Govindarajan, Nita K. Lee, Sean P. Dineen, Oliver S. Eng, Leopoldo J. Fernandez, Richard E. Royal, Lucas Sideris, Haejin In, Garrett M. Nash, Andrew M. Lowy, Colette R. Pameijer, Joshua H. Winer, H. Richard Alexander, Chih-Yi Liao, Shu-Yuan Xiao, Alejandro Plana, Carol Semrad, Martin D. Goodman, Kaitlyn J. Kelly, Erin W. Gilbert, David Jiang, Daniel M. Labow, Blase N. Polite, Clifford S. Cho, Aytekin Oto, Andrea Hayes-Jordan, Steven A. Ahrendt, Scott K. Sherman, Patricio M. Polanco, Nita Ahuja, Giorgos C. Karakousis, Brian D. Badgwell, Hedy L. Kindler, Lloyd A. Mack, Dan G. Blazer, Namrata Setia, Jesus Esquivel, Rhonda K. Yantiss, Daniel V.T. Catenacci, Abraham H. Dachman, Sam G. Pappas, Melvy Mathew, Grace Z. Mak, James C. Cusack, Wilbur B. Bowne, Xavier M. Keutgen, Callisia N. Clarke, James Fleshman, Nader Hanna, John M. Kane, Aliya N. Husain, Mecker G. Möller, Konstantinos I. Votanopoulos, Ugwuji N. Maduekwe, Robert M. Barone, Richard N. Berri, Amanda K. Arrington, Sherif Abdel-Misih, Harveshp Mogal, M. Haroon A. Choudry, Laura A. Lambert, Fabian M. Johnston, Byrne Lee, Alexandra Gangi, Nelya Melnitchouk, Farin Amersi, Jeremiah L. Deneve, Chukwuemeka Ihemelandu, Joseph Skitzki, Kiran K. Turaga, Carla Harmath, Dejan Micic, Armando Sardi, Travis E. Grotz, Joshua M. V. Mammen, Daniel E. Abbott, Jason M. Foster, Ryan P. Merkow, David L. Bartlett, T. Clark Gamblin, Francisco J. Izquierdo, Michael G. White, Charles Komen Brown, Marcovalerio Melis, Paul H. Sugarbaker, Joel M. Baumgartner, Mazin Al‐Kasspooles, Darryl Schuitevoerder, Kamran Idrees, and Vadim Gushchin
- Subjects
Chicago ,Cancer Research ,medicine.medical_specialty ,Consensus ,Palliative care ,Peritoneal surface ,Nutritional Support ,business.industry ,Palliative Care ,Ascites ,Oncology ,Physicians ,Practice Guidelines as Topic ,Humans ,Medicine ,Interdisciplinary Communication ,business ,Intensive care medicine ,Intestinal Obstruction ,Peritoneal Neoplasms - Abstract
The Chicago Consensus Working Group provides multidisciplinary recommendations for palliative care specifically related to peritoneal surface malignancies. These guidelines are developed with input from leading experts including surgical oncologists, medical oncologists, gynecologic oncologists, pathologists, radiologists, palliative care physicians, and pharmacists. These guidelines recognize and address the emerging need for increased awareness in the appropriate management of peritoneal surface disease. They are not intended to replace the quest for higher levels of evidence.
- Published
- 2020
32. The Chicago Consensus on peritoneal surface malignancies: Management of neuroendocrine tumors
- Author
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Kamran Idrees, Vadim Gushchin, Joshua H. Winer, Erin W. Gilbert, Carlos H. F. Chan, Georgios V. Georgakis, Nita Ahuja, Joshua M. V. Mammen, Steven A. Ahrendt, Clifford S. Cho, Anand Govindarajan, Daniel V.T. Catenacci, Grace Z. Mak, Brian D. Badgwell, Lloyd A. Mack, Daniel E. Abbott, Konstantinos I. Votanopoulos, Jesus Esquivel, Aytekin Oto, Namrata Setia, Ugwuji N. Maduekwe, Sean P. Dineen, Jula Veerapong, Leopoldo J. Fernandez, Chukwuemeka Ihemelandu, Joseph Skitzki, Martin D. Goodman, Xavier M. Keutgen, Andrea Hayes-Jordan, Fabian M. Johnston, Rhonda K. Yantiss, Wilbur B. Bowne, James Fleshman, Aliya N. Husain, Kaitlyn J. Kelly, Michael D. Kluger, Blase N. Polite, Hedy L. Kindler, Travis E. Grotz, Sanjay S. Reddy, Nader Hanna, Ryan P. Merkow, Lucas Sideris, Laura A. Lambert, John M. Kane, George I. Salti, Scott K. Sherman, T. Clark Gamblin, Patricio M. Polanco, Melvy Sarah Mathew, Haejin In, M. Haroon A. Choudry, Chih-Yi Liao, Shu-Yuan Xiao, Jason M. Foster, Callisia N. Clarke, Francisco J. Izquierdo, Darryl Schuitevoerder, David L. Bartlett, Lana Bijelic, Alejandro Plana, James C. Cusack, Andrew M. Lowy, Timothy J. Kennedy, Richard E. Royal, Michael G. White, Abraham H. Dachman, Joel M. Baumgartner, Marcovalerio Melis, Lindsay Alpert, Mazin Al‐Kasspooles, Dan G. Blazer, Kiran K. Turaga, Colette R. Pameijer, Paul H. Sugarbaker, Carla Harmath, Mecker G. Möller, Sam G. Pappas, Robert M. Barone, Richard N. Berri, Amanda K. Arrington, Alexandra Gangi, Edward A. Levine, Charles Komen Brown, David Jiang, Daniel M. Labow, Nelya Melnitchouk, Byrne Lee, Giorgos C. Karakousis, Sandy Tun, Charles A. Staley, Sherif Abdel-Misih, Harveshp Mogal, Jeremiah L. Deneve, Armando Sardi, Maheswari Senthil, Oliver S. Eng, H. Richard Alexander, and Farin Amersi
- Subjects
Chicago ,Cancer Research ,Pathology ,medicine.medical_specialty ,Consensus ,Peritoneal surface ,business.industry ,Neuroendocrine tumors ,medicine.disease ,Neuroendocrine Tumors ,Oncology ,Physicians ,Practice Guidelines as Topic ,medicine ,Humans ,Interdisciplinary Communication ,business ,Peritoneal Neoplasms - Abstract
The Chicago Consensus Working Group provides multidisciplinary recommendations for the management of neuroendocrine tumors specifically related to the management of peritoneal surface malignancy. These guidelines are developed with input from leading experts, including surgical oncologists, medical oncologists, pathologists, radiologists, palliative care physicians, and pharmacists. These guidelines recognize and address the emerging need for increased awareness in the appropriate management of peritoneal surface disease. They are not intended to replace the quest for higher levels of evidence.
- Published
- 2020
33. Surgical Management of Pancreatic Neuroendocrine Tumors
- Author
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Tanaz Vaghaiwalla and Xavier M. Keutgen
- Subjects
Surgical resection ,medicine.medical_specialty ,Pancreatic neuroendocrine tumor ,medicine.medical_treatment ,Neuroendocrine tumors ,Pancreaticoduodenectomy ,03 medical and health sciences ,Pancreatectomy ,0302 clinical medicine ,medicine ,Animals ,Humans ,Anatomic resection ,business.industry ,medicine.disease ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,medicine.anatomical_structure ,Multiple factors ,Oncology ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,Surgery ,Radiology ,Distal pancreatectomy ,Pancreas ,business - Abstract
Surgical management of pancreatic neuroendocrine tumors (PNETS) is steadily evolving and is influenced by multiple factors. Sporadic PNETs are generally managed more aggressively than those occurring in the background of hereditary syndromes, and functioning PNETs are almost always resected if they are not metastatic. Localized nonfunctioning PNETs less than 2 cm can often be observed. Surgical resection for localized PNET greater than 2 cm comprises parenchymal sparing pancreas resections, such as enucleations, or formal anatomic resection, such as distal pancreatectomy or pancreaticoduodenectomy. PNETs commonly metastasize to the liver, and several systemic and liver-directed options to treat hepatic metastases are available.
- Published
- 2020
34. Effect on efficacy and safety trial outcomes of also enrolling patients on ongoing glucocorticoid therapy in rheumatoid arthritis clinical trials of tocilizumab or adalimumab or methotrexate monotherapy
- Author
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Yves Luder, Mary Safy-Khan, Xavier M Teitsma, Johannes W. J. Bijlsma, Maria J.H. de Hair, Attila Pethoe-Schramm, Johannes W G Jacobs, Paco M J Welsing, Michael D Edwardes, Jacob M van Laar, and Jenny Devenport
- Subjects
medicine.medical_specialty ,Immunology ,Antibodies, Monoclonal, Humanized ,Infections ,General Biochemistry, Genetics and Molecular Biology ,Arthritis, Rheumatoid ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Tocilizumab ,Rheumatology ,Internal medicine ,medicine ,Adalimumab ,Humans ,Immunology and Allergy ,030212 general & internal medicine ,Adverse effect ,Glucocorticoids ,Randomized Controlled Trials as Topic ,030203 arthritis & rheumatology ,business.industry ,medicine.disease ,Clinical trial ,Methotrexate ,Treatment Outcome ,chemistry ,Glucocorticoid therapy ,Antirheumatic Agents ,Rheumatoid arthritis ,Drug Therapy, Combination ,Outcomes research ,business ,medicine.drug - Abstract
BackgroundIn rheumatoid arthritis (RA) trials, inclusion of patients on background treatment with glucocorticoids (GCs) might impact efficacy and safety outcomes.ObjectivesTo determine if inclusion of patients on background GC use influenced efficacy and safety outcomes of RA randomised clinical trials on initiation of tocilizumab (TCZ) or adalimumab (ADA) or methotrexate (MTX) monotherapy.MethodsData of four double-blind RA randomised controlled trials (AMBITION, ACT-RAY, ADACTA and FUNCTION) with in total four TCZ, one ADA and two MTX monotherapy arms were analysed. Analyses of covariance of changes from baseline to week 24 in efficacy endpoints and radiographic progression up to week 104 were performed, correcting for relevant covariates. Incidence rates of serious adverse events (SAEs) were assessed.ResultsNo statistically significant differences were found in efficacy parameters between background GC users and non-GC users, except for less radiographic progression associated with GC usage in one MTX arm. SAE rates were not statistically significantly different between GC users and non-GC users in the treatment arms.ConclusionNo effect of including patients on background GC treatment on efficacy and safety trial outcomes was found, with the exception of reduced radiological joint damage in one MTX arm.
- Published
- 2020
35. Operative resection in early stage pancreatic neuroendocrine tumors in the United States: Are we over- or undertreating patients?
- Author
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Sitaram V. Chivukula, Martin Hertl, John F. Tierney, Xavier M. Keutgen, and Jennifer Poirier
- Subjects
Male ,medicine.medical_specialty ,Clinical Decision-Making ,Tail of pancreas ,Kaplan-Meier Estimate ,030230 surgery ,Neuroendocrine tumors ,03 medical and health sciences ,Pancreatectomy ,0302 clinical medicine ,Humans ,Medicine ,Practice Patterns, Physicians' ,Stage (cooking) ,Pancreas ,Survival rate ,Aged ,Neoplasm Staging ,Proportional Hazards Models ,Retrospective Studies ,business.industry ,Proportional hazards model ,Patient Selection ,Hazard ratio ,Cancer ,Retrospective cohort study ,Middle Aged ,medicine.disease ,United States ,Tumor Burden ,Pancreatic Neoplasms ,Survival Rate ,Neuroendocrine Tumors ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Practice Guidelines as Topic ,Female ,Surgery ,Radiology ,business - Abstract
Many current guidelines recommend nonoperative management for pancreatic neuroendocrine tumors2 cm. The objective of this study was to evaluate the utilization and outcomes of resection for these pancreatic neuroendocrine tumors in the United States.Using the National Cancer Database (2004-2014), 3,243 cases of T1 (≤2.0 cm) pancreatic neuroendocrine tumors were identified. Additional patient and tumor characteristics were examined. Multivariate models were used to identify factors that predicted resection and to assess patient survival after resection.75% of pancreatic neuroendocrine tumors measuring 0 to 1.0 cm and 80% of pancreatic neuroendocrine tumors measuring1.0 and ≤2.0 cm were resected. Eighty-four pancreatic neuroendocrine tumors were functional, of which 82% were resected. Variables influencing resection included positive lymph nodes, tumor in body or tail of pancreas, well or moderately differentiated tumors, and resection at academic medical centers (odds ratio 1.5-4.9). When controlling for other variables, patients with pancreatic neuroendocrine tumors 1 to 2 cm who underwent resection had a prolonged 5-year survival rate (hazard ratio 0.51, confidence interval 0.34-0.75) when compared with those who did not undergo resection. This survival benefit of resection was not found for pancreatic neuroendocrine tumors 0 to 1 cm (hazard ratio = 0.63, confidence interval 0.36-1.11).Contrary to many current recommendations, most patients with pancreatic neuroendocrine tumors ≤2.0 cm undergo surgical resection in the United States. A survival benefit was found for resection of pancreatic neuroendocrine tumors 1 to 2 cm, suggesting that current recommendations should perhaps be revised.
- Published
- 2020
36. The North American Neuroendocrine Tumor Society Consensus Paper on the Surgical Management of Pancreatic Neuroendocrine Tumors
- Author
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Jennifer A. Chan, Xavier M. Keutgen, James R. Howe, Yusuf Menda, Jennifer F. Tseng, Rebecca M. Minter, Claudius Conrad, Thomas A. Hope, Michelle K. Kim, Herbert J. Zeh, Jeffrey A. Drebin, Gagandeep Singh, Steven K. Libutti, Rodney F. Pommier, Thorvardur R. Halfdanarson, Jeffrey E. Lee, Nipun B. Merchant, Terry C. Lairmore, and Julie Hallet
- Subjects
medicine.medical_specialty ,Pancreatic neuroendocrine tumor ,Consensus Development Conferences as Topic ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Clinical Sciences ,MEDLINE ,Review Literature as Topic ,Neuroendocrine tumors ,pancreatic neuroendocrine tumor ,neuroendocrine tumor liver metastases ,Article ,Pancreatic Cancer ,03 medical and health sciences ,Rare Diseases ,0302 clinical medicine ,Endocrinology ,Medical ,Internal Medicine ,medicine ,neuroendocrine ,Humans ,pancreas ,metastases ,Societies, Medical ,Cancer ,Surgeons ,Gastroenterology & Hepatology ,Hepatology ,business.industry ,General surgery ,Neurosciences ,Consensus conference ,medicine.disease ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,North America ,Practice Guidelines as Topic ,Pancreatectomy ,030211 gastroenterology & hepatology ,pancreatectomy ,Societies ,Digestive Diseases ,Pancreas ,business - Abstract
This manuscript is the result of the North American Neuroendocrine Tumor Society consensus conference on the surgical management of pancreatic neuroendocrine tumors from July 19 to 20, 2018. The group reviewed a series of questions of specific interest to surgeons taking care of patients with pancreatic neuroendocrine tumors, and for each, the available literature was reviewed. What follows are these reviews for each question followed by recommendations of the panel.
- Published
- 2020
37. First Differentiate and Then Operate (Or Not) : Editorial on 'Surgical Treatment of Patients with Poorly Differentiated Pancreatic Neuroendocrine Carcinoma: An NCDB Analysis'
- Author
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Xavier M, Keutgen
- Subjects
Pancreatic Neoplasms ,Neuroendocrine Tumors ,Humans ,Carcinoma, Neuroendocrine - Published
- 2022
38. Multiyear Factor VIII Expression after AAV Gene Transfer for Hemophilia A
- Author
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Xavier M Anguela, Kristen Jaworski, Stacy E Croteau, John E J Rasko, Tiffany Chang, Federico Mingozzi, Paul E Monahan, Katherine A. High, Kathleen Z Reape, Margaret V Ragni, Lindsey A. George, Amy Macdougall, Spencer K. Sullivan, M Elaine Eyster, Benjamin J. Samelson-Jones, Robert Noble, Michael Recht, Marla Curran, and Klaudia Kuranda
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,Genotype ,Genetic enhancement ,Genetic Vectors ,Hemophilia A ,Gastroenterology ,Article ,Young Adult ,Immune system ,Internal medicine ,medicine ,Humans ,Vector (molecular biology) ,Adverse effect ,Glucocorticoids ,Immunosuppression Therapy ,Lung ,Factor VIII ,business.industry ,General Medicine ,Genetic Therapy ,Dependovirus ,Middle Aged ,Confidence interval ,Discontinuation ,medicine.anatomical_structure ,Cohort ,Hepatocytes ,business ,Follow-Up Studies - Abstract
Background The goal of gene therapy for patients with hemophilia A is to safely impart long-term stable factor VIII expression that predictably ameliorates bleeding with the use of the lowest possible vector dose. Methods In this phase 1-2 trial, we infused an investigational adeno-associated viral (AAV) vector (SPK-8011) for hepatocyte expression of factor VIII in 18 men with hemophilia A. Four dose cohorts were enrolled; the lowest-dose cohort received a dose of 5 × 1011 vector genomes (vg) per kilogram of body weight, and the highest-dose cohort received 2 × 1012 vg per kilogram. Some participants received glucocorticoids within 52 weeks after vector administration either to prevent or to treat a presumed AAV capsid immune response. Trial objectives included evaluation of the safety and preliminary efficacy of SPK-8011 and of the expression and durability of factor VIII. Results The median safety observation period was 36.6 months (range, 5.5 to 50.3). A total of 33 treatment-related adverse events occurred in 8 participants; 17 events were vector-related, including 1 serious adverse event, and 16 were glucocorticoid-related. Two participants lost all factor VIII expression because of an anti-AAV capsid cellular immune response that was not sensitive to immune suppression. In the remaining 16 participants, factor VIII expression was maintained; 12 of these participants were followed for more than 2 years, and a one-stage factor VIII assay showed no apparent decrease in factor VIII activity over time (mean [±SD] factor VIII activity, 12.9±6.9% of the normal value at 26 to 52 weeks when the participants were not receiving glucocorticoids vs. 12.0±7.1% of the normal value at >52 weeks after vector administration; 95% confidence interval [CI], -2.4 to 0.6 for the difference between matched pairs). The participants had a 91.5% reduction (95% CI, 88.8 to 94.1) in the annualized bleeding rate (median rate, 8.5 events per year [range, 0 to 43.0] before vector administration vs. 0.3 events per year [range, 0 to 6.5] after vector administration). Conclusions Sustained factor VIII expression in 16 of 18 participants who received SPK-8011 permitted discontinuation of prophylaxis and a reduction in bleeding episodes. No major safety concerns were reported. (Funded by Spark Therapeutics and the National Heart, Lung, and Blood Institute; ClinicalTrials.gov numbers, NCT03003533 and NCT03432520.).
- Published
- 2021
39. First Differentiate and Then Operate (Or Not)
- Author
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Xavier M. Keutgen
- Subjects
Oncology ,Surgery - Published
- 2022
40. Should 68Ga-DOTATATE PET/CT be Performed Routinely in Patients with Neuroendocrine Tumors Before Surgical Resection?
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Nasim T. Babazadeh, Jagadeesh Singh, Devan Schlund, Tyler Cornelius, Meri Chen, John F. Tierney, and Xavier M. Keutgen
- Subjects
medicine.medical_specialty ,PET-CT ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,Retrospective cohort study ,Vascular surgery ,Neuroendocrine tumors ,medicine.disease ,Primary tumor ,Cardiothoracic surgery ,medicine ,Surgery ,Radiology ,business ,Abdominal surgery - Abstract
The only potential cure for neuroendocrine tumors (NETs) is operative resection, which may also offer a survival benefit for advanced disease. We aimed to assess the role of 68Ga-DOTATATE PET/CT in preoperative planning and compared its performance to CT with IV contrast and MRI with Eovist®, for abdominal NETs. Records of patients who underwent 68Ga-DOTATATE PET/CT in addition to MRI with Eovist® and/or CT with IV contrast were retrospectively evaluated. The effect of imaging findings on surgical management and characteristics of detected lesions were analyzed. Descriptive statistics were used. Of 21 patients who underwent 68Ga-DOTATATE PET/CT prior to surgical resection, five (24%) had a change in surgical management due to findings. In three patients, 68Ga-DOTATATE PET/CT identified the primary tumor. In two patients, 68Ga-DOTATATE PET/CT helped clarify equivocal hepatic lesions seen on MRI with Eovist®. MRI with Eovist® had the highest number of lesions found (median 13, versus 9 on CT and 9.5 on 68Ga-DOTATATE PET/CT). DOTATATE-avid lesions were on average larger than lesions seen only on MRI with Eovist® (1.6 cm versus 0.6 cm, p = 0.0002). The optimal cutoff point for detection by 68Ga-DOTATATE PET/CT was a size of 0.95 cm, with a sensitivity of 56% and specificity of 98%. Preoperative 68Ga-DOTATATE PET/CT is useful only in a subset of patients undergoing surgical resection for NETs. MRI with Eovist® is superior at identifying liver metastases when compared to 68Ga-DOTATATE PET/CT and should therefore be used routinely before hepatic cytoreduction of NETs.
- Published
- 2019
41. National Treatment Practice for Adrenocortical Carcinoma: Have They Changed and Have We Made Any Progress?
- Author
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Martin Hertl, Sam G. Pappas, John F. Tierney, Jennifer Poirier, Electron Kebebew, Sitaram V. Chivukula, Xavier M. Keutgen, and Erik Schadde
- Subjects
Male ,Oncology ,medicine.medical_specialty ,Databases, Factual ,Endocrinology, Diabetes and Metabolism ,Clinical Biochemistry ,Antineoplastic Agents ,030209 endocrinology & metabolism ,Malignancy ,Biochemistry ,Disease-Free Survival ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,Adrenocortical Carcinoma ,medicine ,Adjuvant therapy ,Humans ,Adrenocortical carcinoma ,Mitotane ,Aged ,Proportional hazards model ,business.industry ,Biochemistry (medical) ,Hazard ratio ,Cancer ,Adrenalectomy ,Middle Aged ,Prognosis ,medicine.disease ,Combined Modality Therapy ,Adrenal Cortex Neoplasms ,Treatment Outcome ,Chemotherapy, Adjuvant ,030220 oncology & carcinogenesis ,Cohort ,Female ,business ,medicine.drug - Abstract
Background Adrenocortical carcinoma (ACC) is a rare malignancy with a dismal prognosis. Two landmark trials published in 2007 and 2012 showed efficacy for adjuvant mitotane in resectable ACC and etoposide/doxorubicin/cisplatin plus mitotane for unresectable ACC, respectively. In this study, we used the National Cancer Database to examine whether treatment patterns and outcomes changed after these trials. Methods The National Cancer Database was used to examine treatment patterns and survival in patients diagnosed with ACC from 2006 to 2015. Treatment modalities were compared within that group and with a historical cohort (1985 to 2005). χ2 tests were performed, and Cox proportional hazards models were created. Results From 2006 to 2015, 2752 patients were included; 38% of patients (1042) underwent surgery alone, and 31% (859) underwent surgery with adjuvant therapy. Overall 5-year survival rates for all stages after resection were 43% (median, 41 months) in the contemporary cohort and 39% (median, 32 months) in the historical cohort. After 2007, patients who underwent surgery were more likely to receive adjuvant chemotherapy (P = 0.005), and 5-year survival with adjuvant chemotherapy improved (41% vs 25%; P = 0.02). However, survival did not improve in patients with unresectable tumors after 2011 compared with 2006 to 2011 (P = 0.79). Older age, tumor size ≥10 cm, distant metastases, and positive margins were associated with lower survival after resection (hazard ratio range: 1.39 to 3.09; P < 0.03). Conclusions Since 2007, adjuvant therapy has been used more frequently in patients with resected ACC, and survival for these patients has improved but remains low. More effective systemic therapies for patients with ACC, especially those in advanced stages, are desperately needed.
- Published
- 2019
42. Initiating tocilizumab, with or without methotrexate, compared with starting methotrexate with prednisone within step-up treatment strategies in early rheumatoid arthritis: an indirect comparison of effectiveness and safety of the U-Act-Early and CAMERA-II treat-to-target trials
- Author
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Michelle E A Borm, Suzanne P. Linn-Rasker, Marjolein J.H. de Hair, Johannes W G Jacobs, Floris P J G Lafeber, Attila Pethoe-Schramm, Jacob M van Laar, Xavier M Teitsma, Paco M J Welsing, Janneke Tekstra, Johannes W. J. Bijlsma, Maxime Verhoeven, and Evert Jan ter Borg
- Subjects
musculoskeletal diseases ,medicine.medical_specialty ,business.industry ,Immunology ,Treat to target ,Early rheumatoid arthritis ,Gastroenterology ,General Biochemistry, Genetics and Molecular Biology ,Rheumatology ,Indirect comparison ,chemistry.chemical_compound ,Tocilizumab ,chemistry ,Prednisone ,Internal medicine ,medicine ,Immunology and Allergy ,Treatment strategy ,Methotrexate ,skin and connective tissue diseases ,business ,medicine.drug - Abstract
Objectives Methotrexate (MTX), often combined with low moderately dosed prednisone, is still the cornerstone of initial treatment for early rheumatoid arthritis (RA). It is not known how this strategy compares with initial treatment with a biological. We therefore compared the effectiveness of tocilizumab (TCZ), or TCZ plus MTX (TCZ+MTX) with MTX plus 10 mg prednisone (MTX+pred), all initiated within a treat-to-target treatment strategy in early RA. Methods Using individual patient data of two trials, we indirectly compared tight-controlled treat-to-target strategies initiating TCZ (n=103), TCZ+MTX (n=106) or MTX+pred (n=117), using initiation of MTX (n=227) as reference. Primary outcome was Disease Activity Score assessing 28 joints (DAS28) over 24 months. To assess the influence of acute phase reactants (APRs), a disease activity composite outcome score without APR (ie, modification of the Clinical Disease Activity Index (m-CDAI)) was analysed. Secondary outcomes were remission (several definitions), physical function and radiographic progression. Multilevel models were used to account for clustering within trials and patients over time, correcting for relevant confounders. Results DAS28 over 24 months was lower for TCZ+MTX than for MTX+Pred (mean difference: −0.62 (95% CI −1.14 to −0.10)). Remission was more often achieved in TCZ+MTX and in TCZ versus MTX+pred (p=0.02/0.05, respectively). Excluding APRs from the disease activity outcome score, TCZ-based strategies showed a slightly higher m-CDAI compared with MTX+pred, but this was not statistically significant. Other outcomes were also not statistically significantly different between the strategies. Conclusions In patients with early RA, although TCZ-based strategies resulted in better DAS28 and remission rates compared with MTX+pred, at least part of these effects may be due to a specific effect of TCZ on APRs.
- Published
- 2019
43. Entering the Modern Era of Gene Therapy
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Xavier M. Anguela and Katherine A. High
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Male ,0301 basic medicine ,Genetic enhancement ,Genetic Vectors ,Bioinformatics ,Risk Assessment ,General Biochemistry, Genetics and Molecular Biology ,Adenoviridae ,Translational Research, Biomedical ,03 medical and health sciences ,0302 clinical medicine ,Momentum (finance) ,Animals ,Humans ,Medicine ,Gene Editing ,business.industry ,Lentivirus ,Genetic Therapy ,General Medicine ,United States ,Treatment Outcome ,030104 developmental biology ,National Institutes of Health (U.S.) ,030220 oncology & carcinogenesis ,Female ,business ,Forecasting - Abstract
Gene therapies are gaining momentum as promising early successes in clinical studies accumulate and examples of regulatory approval for licensing increase. Investigators are advancing with cautious optimism that effective, durable, and safe therapies will provide benefit to patients—not only those with single-gene disorders but those with complex acquired diseases as well. While the strategies being translated from the lab to the clinic are numerous, this review focuses on the clinical research that has forged the gene therapy field as it currently stands.
- Published
- 2019
44. Do All Abdominal Neuroendocrine Tumors Require Extended Postoperative VTE Prophylaxis? A NSQIP Analysis
- Author
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Justin Gerard, Nicholas J. Skertich, Sam G. Pappas, Xavier M. Keutgen, Jennifer Poirier, Martin Hertl, and Erik Schadde
- Subjects
Adult ,Male ,medicine.medical_specialty ,Databases, Factual ,Operative Time ,Subgroup analysis ,030230 surgery ,Neuroendocrine tumors ,Vte prophylaxis ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Risk Factors ,Internal medicine ,Humans ,Medicine ,In patient ,Postoperative Period ,cardiovascular diseases ,Serum Albumin ,Aged ,Venous Thrombosis ,Duration of Therapy ,business.industry ,Incidence ,Incidence (epidemiology) ,Gastroenterology ,Anticoagulants ,Venous Thromboembolism ,Blood Coagulation Disorders ,Middle Aged ,equipment and supplies ,medicine.disease ,Pancreatic Neoplasms ,Neuroendocrine Tumors ,Abdominal Neoplasms ,030220 oncology & carcinogenesis ,Multivariate Analysis ,Operative time ,Female ,Surgery ,High incidence ,Pulmonary Embolism ,business ,Venous thromboembolism - Abstract
Venous thromboembolism (VTE) occurs at high incidence in abdominal cancer surgery; therefore, a 4-week postoperative VTE prophylaxis is advocated. However, most patients with neuroendocrine tumors (NETs) have more favorable prognoses. This study aimed to determine the incidence of VTE in patients with abdominal NETs, compare these rates to other abdominal malignancies, and identify VTE risk factors. The ACS-NSQIP database was queried to identify patients with abdominal NETs and other abdominal malignancies who underwent surgery from 2008 to 2015. A 30-day postoperative VTE incidence for each group was compared. Univariable and multivariable analyses were used to identify VTE risk factors. Of the 7226 operations for patients with benign (2154) and malignant (5072) abdominal NETs, 144 patients experienced a VTE without significant differences between groups. Subgroup analysis revealed a spectrum of VTE rates. Compared to VTE rates of other abdominal malignancies, patients with benign (1.1% vs. 2.4%, p
- Published
- 2019
45. 68Gallium-DOTATATE positron emission tomography–computed tomography (PET CT) changes management in a majority of patients with neuroendocrine tumors
- Author
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Amjad Ali, John F. Tierney, Erik Schadde, Sam G. Pappas, Sumeet Virmani, Cory Kosche, Jennifer Poirier, and Xavier M. Keutgen
- Subjects
medicine.medical_specialty ,PET-CT ,business.industry ,Cancer ,030230 surgery ,Neuroendocrine tumors ,medicine.disease ,03 medical and health sciences ,symbols.namesake ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Clinical endpoint ,symbols ,Medicine ,Surgery ,Positron emission ,Radiology ,Tomography ,business ,Prospective cohort study ,Fisher's exact test - Abstract
Background 68Gallium-DOTATATE positron emission tomography–computed tomography (PET CT) has shown superior accuracy in detecting grade 1 and 2 neuroendocrine tumors over previous imaging modalities and was recently included in National Comprehensive Cancer Network guidelines. It remains unclear which patients benefit most from this imaging modality. We therefore reviewed our initial experience with 68Gallium-DOTATATE PET CT to evaluate its usefulness in diagnosing, staging, and surveilling neuroendocrine tumors. Methods Records of patients who underwent 68Gallium-DOTATATE PET CT from March to December 2017 were prospectively evaluated. The primary endpoint was whether 68Gallium-DOTATATE PET CT changes treatment in patients with neuroendocrine tumors. Descriptive statistics, Fisher exact tests, and nested logistic regressions were conducted. Results A total of 50 consecutive patients were included. Of these, 41 patients (82%) had a biopsy-proven neuroendocrine tumor at the time of imaging. The remaining 9 patients (18%) had symptoms or biochemistry suggestive of a neuroendocrine tumor with negative cross-sectional imaging. 68Gallium-DOTATATE PET CT changed management in 33 patients (66%). There were 24 patients with intermodality changes in management and 9 patients with intramodality changes in management. Patients with scans performed for staging had a higher likelihood of a change in management (P = .006). Conclusion Performing 68Gallium-DOTATATE PET CT should be considered for staging and surveillance of neuroendocrine tumors because it is frequently associated with changes in management.
- Published
- 2019
46. Total Thyroidectomy vs Thyroid Lobectomy for Localized Papillary Thyroid Cancer in Children: A Propensity-Matched Survival Analysis
- Author
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Peter Angelos, Salman Alsafran, Tanaz Vaghaiwalla, Kelvin Memeh, Brian Ruhle, Edwin L. Kaplan, and Xavier M. Keutgen
- Subjects
Male ,medicine.medical_specialty ,endocrine system diseases ,Adolescent ,medicine.medical_treatment ,Thyroid Lobectomy ,Papillary thyroid cancer ,03 medical and health sciences ,0302 clinical medicine ,Interquartile range ,Internal medicine ,medicine ,Surveillance, Epidemiology, and End Results ,Humans ,Registries ,Thyroid Neoplasms ,Child ,Propensity Score ,Survival analysis ,business.industry ,Thyroid ,Thyroidectomy ,medicine.disease ,Survival Analysis ,medicine.anatomical_structure ,Thyroid Cancer, Papillary ,030220 oncology & carcinogenesis ,Cohort ,030211 gastroenterology & hepatology ,Surgery ,Female ,business - Abstract
Current guidelines recommend total thyroidectomy (TT) and radioablation for most papillary thyroid cancer (PTC) in children. These guidelines have been criticized as aggressive, especially for early-stage PTC, as it likely does not influence patient survival and results in life-long thyroid hormone replacement. We sought to study whether the extent of thyroidectomy (TT vs thyroid lobectomy [TL]) influences overall and disease-specific survival in children with localized PTC.The National Cancer Database and the Surveillance, Epidemiology, and End Results registries were queried. Patients 18 years or younger with low-risk PTC between 2004 and 2016 were included. Using a 1:1 propensity score matching, patients who underwent TT were matched for age, sex, race, year of diagnosis, and tumor size with a similar cohort of patients who underwent TL. Primary end points were overall survival and disease-specific survival.There were 3,500 patients identified as surgically treated for PTC, of which 1,325 patients met inclusion criteria for matching. Three hundred and twenty-six patients were matched. One hundred and sixty-three patients had TT; 140 were female and mean age was 16 years (interquartile range [IQR] 13 to 17 years). One hundred and sixty-three patients had TL; 140 were female and mean age was 16 years (IQR 14 to 17 years). Median follow-up was 5.0 years (IQR 2.8 to 8 years) and 8.3 years (IQR 3.6 to 14.4 years) in the National Cancer Database and Surveillance, Epidemiology, and End Results cohorts, respectively. There was no statistically significant difference in overall survival or disease-specific survival in patients with PTC4 cm, regardless of whether patients underwent TT or TL (p = 0.32 for National Cancer Database registry and p = 0.67 for Surveillance, Epidemiology, and End Results registry).This study suggests that the extent of thyroidectomy does not influence survival for pediatric patients with early-stage PTC and that TL might be adequate in this patient population.
- Published
- 2021
47. Examination of the Isotropy Assumption in Isogrid Structures through Analysis of Nine Isogrid Variations
- Author
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Xavier M. Delgado and Craig G. Merrett
- Subjects
Materials science ,business.industry ,Isotropy ,Structural engineering ,business - Published
- 2021
48. Disease gene discovery in male infertility: past, present and future
- Author
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Xavier, M. J., Salas-Huetos, A., Oud, M. S., Aston, K. I., and Veltman, J. A.
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Male ,Infertility ,Genomics ,Review ,Computational biology ,Biology ,Male infertility ,03 medical and health sciences ,0302 clinical medicine ,Genetics ,medicine ,Animals ,Humans ,Genetic Testing ,Genetic Association Studies ,Infertility, Male ,Genetics (clinical) ,030304 developmental biology ,Genetic testing ,Disease gene ,0303 health sciences ,Functional validation ,030219 obstetrics & reproductive medicine ,Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7] ,medicine.diagnostic_test ,medicine.disease ,Disease gene identification ,Spermatozoa ,Human genetics - Abstract
Contains fulltext : 231663.pdf (Publisher’s version ) (Open Access) Identifying the genes causing male infertility is important to increase our biological understanding as well as the diagnostic yield and clinical relevance of genetic testing in this disorder. While significant progress has been made in some areas, mainly in our knowledge of the genes underlying rare qualitative sperm defects, the same cannot be said for the genetics of quantitative sperm defects. Technological advances and approaches in genomics are critical for the process of disease gene identification. In this review we highlight the impact of various technological developments on male infertility gene discovery as well as functional validation, going from the past to the present and the future. In particular, we draw attention to the use of unbiased genomics approaches, the development of increasingly relevant functional assays and the importance of large-scale international collaboration to advance disease gene identification in male infertility.
- Published
- 2021
49. Investigando os corpos nos livros didáticos de Ciências dos anos iniciais do ensino fundamental
- Author
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Ribeiro Costa, P. and Marques Xavier, M.
- Abstract
Este trabalho tem como propósito investigar como os corpos são apresentados nos livros didáticos de Ciências dos Anos Iniciais, do Ensino Fundamental. Neste estudo, estabelecemos algumas conexões com os Estudos Culturais nas suas vertentes pós-estruturalistas, entendendo os corpos como produções históricas e culturais. Para tanto, analisamos os livros didáticos utilizados por professoras do município do Rio Grande/RS. Sendo os livros didáticos um dos materiais mais utilizados pelos/as professores/as para o planejamento de suas aulas, necessitamos (re)pensar sua utilização, problematizando as questões e imagens neles apresentadas e permitindo que sejam feitas contribuições acerca de outros assuntos que fazem parte do dia-a-dia de todos nós, envolvendo temas que dizem respeito a beleza, saúde, doença, obesidade, sexualidade, entre outras.
- Published
- 2021
50. Surgical Evaluation of Appendiceal Neuroendocrine Tumors
- Author
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Xavier M. Keutgen and Tanaz Vaghaiwalla
- Subjects
medicine.medical_specialty ,Tumor size ,business.industry ,medicine.medical_treatment ,Disease ,Neuroendocrine tumors ,Debulking ,medicine.disease ,Somatostatin ,Medicine ,Histopathology ,Lymphadenectomy ,Radiology ,business ,Right hemicolectomy - Abstract
Appendiceal neuroendocrine tumors (NETs) are rare with an incidence rate of 0.15–0.6 cases per 100,000 each year. The majority of appendiceal neuroendocrine tumors are diagnosed retrospectively after appendectomy that was performed for other indications. Workup includes histopathology review, biochemical laboratory studies, and cross-sectional and/or functional imaging. The extent of surgical resection, appendectomy versus right hemicolectomy with mesenteric lymphadenectomy, depends upon assessment of tumor size, location, and other high risk features. The management of advanced or metastatic disease is more complex and often requires a multidisciplinary approach but can include hepatic debulking, local ablative therapies, and/or medical therapies including somatostatin analogues, targeted therapies, and cytotoxic chemotherapies. Patients with locoregional disease have excellent survival, while patients with advanced and metastatic disease have a worse prognosis. The purpose of this text is to review the diagnosis and surgical management of well-differentiated appendiceal NETs.
- Published
- 2021
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