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Chaithra Gowthuvalli Venkataramana, Hema Kini, Debarshi Saha, Sharada Rai, Deepa Sowkur Anandarama Adiga, Ranjitha Rao, Cheryl Sarah Philipose
INTRODUCTION: Castleman Disease (CD) is a rare lymphopro-liferative disorder with heterogenous clinical and pathological features. It is a rare disease with mention in the rare disease data of the orphanet. It can present as unicentric or multicentric disease. Hyaline vascular variant and plasma cell variant are the two pathological subtypes. Hyaline vascular variant accounts for nearly 80% to 90% of unicentric cases. Hyaline vascular subtype variant has follicular and stroma rich subtype...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
Samuel Lampa, Egon Willighagen, Pekka Kohonen, Ali King, Denny Vrandečić, Roland Grafström, Ola Spjuth
BACKGROUND: Biological sciences are characterised not only by an increasing amount but also the extreme complexity of its data. This stresses the need for efficient ways of integrating these data in a coherent description of biological systems. In many cases, biological data needs organization before integration. This is not seldom a collaborative effort, and it is thus important that tools for data integration support a collaborative way of working. Wiki systems with support for structured semantic data authoring, such as Semantic MediaWiki, provide a powerful solution for collaborative editing of data combined with machine-readability, so that data can be handled in an automated fashion in any downstream analyses...
September 4, 2017: Journal of Biomedical Semantics
Lisa Friedlander, Rémy Choquet, Eva Galliani, Myriam de Chalendar, Claude Messiaen, Amélie Ruel, Marie-Paule Vazquez, Ariane Berdal, Corinne Alberti, Muriel De La Dure Molla
BACKGROUND: In the last ten years, national rare disease networks have been established in France, including national centres of expertise and regional ones, with storage of patient data in a bioinformatics tool. The aim was to contribute to the development and evaluation of health strategies to improve the management of patients with rare diseases. The objective of this study has been to provide the first national-level data concerning rare diseases of the head, neck and teeth and to assess the balance between demand and supply of care in France...
May 19, 2017: Orphanet Journal of Rare Diseases
Mina Amin, Daniel J No, Jashin J Wu
BACKGROUND: Patient registries are databases comprised of standardized clinical data for a specific population of patients with a particular disease or medical condition. Information from patient registries allows clinicians to assess long-lasting outcomes in patients with a specific disease, such as psoriasis. OBJECTIVE: Our primary objective was to identify available psoriasis registries in the United States (U.S.) and evaluate the application of patient registries compared to clinical trials...
October 2, 2017: Journal of Dermatological Treatment
T Müller, A Jerrentrup, J R Schäfer
To establish a comprehensive diagnosis is by far the most challenging task in a physician's daily routine. Especially rare diseases place high demands on differential diagnosis, caused by the high number of around 8000 diseases and their clinical variability. No clinician can be aware of all the different entities and memorizing them all is impossible and inefficient. Specific diagnostic decision-supported systems provide better results than standard search engines in this context. The systems FindZebra, Phenomizer, Orphanet, and Isabel are presented here concisely with their advantages and limitations...
March 31, 2017: Der Internist
Xiaoxia Liu, Zhihao Yang, Hongfei Lin, Michael Simmons, Zhiyong Lu
BACKGROUND: An orphan disease is any disease that affects a small percentage of the population. Orphan diseases are a great burden to patients and society, and most of them are genetic in origin. Unfortunately, our current understanding of the genes responsible for inherited orphan diseases is still quite limited. Developing effective computational algorithms to discover disease-causing genes would help unveil disease mechanisms and may enable better diagnosis and treatment. RESULTS: We have developed a novel method, named as DIGNiFI (Disease causIng GeNe FInder), which uses Protein-Protein Interaction (PPI) network-based features to discover and rank candidate disease-causing genes...
March 14, 2017: BMC Systems Biology
M Hanisch, L Hanisch, K Benz, J Kleinheinz, J Jackowski
The aim of this working group was to establish a ROMSE (recording of orofacial manifestations in people with rare diseases) database to provide clinicians, patients, and their families with better information about these diseases. In 2011, we began to search the databases Orphanet, OMIM(®) (Online Mendelian Inheritance in Man(®)), and PubMed, for rare diseases with orofacial symptoms, and since 2013, the collected information has been incorporated into a web-based, freely accessible database. To date, 471 rare diseases with orofacial signs have been listed on ROMSE, and 10 main categories with 99 subcategories of signs such as different types of dental anomalies, changes in the oral mucosa, dysgnathia, and orofacial clefts, have been defined...
February 23, 2017: British Journal of Oral & Maxillofacial Surgery
Sonia Pavan, Kathrin Rommel, María Elena Mateo Marquina, Sophie Höhn, Valérie Lanneau, Ana Rath
Clinical practice guidelines (CPGs) for rare diseases (RDs) are scarce, may be difficult to identify through Internet searches and may vary in quality depending on the source and methodology used. In order to contribute to the improvement of the diagnosis, treatment and care of patients, Orphanet ( has set up a procedure for the selection, quality evaluation and dissemination of CPGs, with the aim to provide easy access to relevant, accurate and specific recommendations for the management of RDs...
2017: PloS One
C Schey, P F M Krabbe, M J Postma, M P Connolly
BACKGROUND: Since the introduction of the orphan drugs legislation in Europe, it has been suggested that the general method of assessing drugs for reimbursement is not necessarily suitable for orphan drugs. The National Institute for Health and Clinical Excellence indicated that several criteria other than cost and efficacy could be considered in reimbursement decisions for orphan drugs. This study sought to explore the multi-criteria decision analysis (MCDA) framework proposed by (Orphanet J Rare Dis 7:74, 2012) to a range of orphan drugs, with a view to comparing the aggregate scores to the average annual cost per patient for each product, and thus establishing the merit of MCDA as a tool for assessing the value of orphan drugs in relation to their pricings...
January 17, 2017: Orphanet Journal of Rare Diseases
Stephen Lynn, Victoria Hedley, Antonio Atalaia, Teresinha Evangelista, Kate Bushby
Joint Actions are successful initiatives from the European Commission (EC) that have helped to raise awareness and to bring significant benefit to those suffering from a rare disease (RD). In this paper, we will focus on the activities developed by the EUCERD Joint Action (EJA) and by the Orphanet Joint Action ("Orphanet Europe"). EUCERD Joint Action was co-funded by the EC and the Member States between 2012 and 2015 to help to define the activities and policies in the field of RD and foster exchange of experiences amongst Member States...
March 2017: European Journal of Medical Genetics
Philipp Hofer, Sabrina Neururer, Georg Goebel
Data describing biobank resources frequently contains unstructured free-text information or insufficient coding standards. (Bio-) medical ontologies like Orphanet Rare Diseases Ontology (ORDO) or the Human Disease Ontology (DOID) provide a high number of concepts, synonyms and entity relationship properties. Such standard terminologies increase quality and granularity of input data by adding comprehensive semantic background knowledge from validated entity relationships. Moreover, cross-references between terminology concepts facilitate data integration across databases using different coding standards...
2016: Studies in Health Technology and Informatics
Mary Kearney, Richard W Orrell, Michael Fahey, Ruth Brassington, Massimo Pandolfo
BACKGROUND: Friedreich ataxia is a rare inherited autosomal recessive neurological disorder, characterised initially by unsteadiness in standing and walking, slowly progressing to wheelchair dependency usually in the late teens or early twenties. It is associated with slurred speech, scoliosis, and pes cavus. Heart abnormalities cause premature death in 60% of people with the disorder. There is no easily defined clinical or biochemical marker and no known treatment. This is the second update of a review first published in 2009 and previously updated in 2012...
August 30, 2016: Cochrane Database of Systematic Reviews
Rui Alves, Marc Piñol, Jordi Vilaplana, Ivan Teixidó, Joaquim Cruz, Jorge Comas, Ester Vilaprinyo, Albert Sorribas, Francesc Solsona
Introduction. Most documented rare diseases have genetic origin. Because of their low individual frequency, an initial diagnosis based on phenotypic symptoms is not always easy, as practitioners might never have been exposed to patients suffering from the relevant disease. It is thus important to develop tools that facilitate symptom-based initial diagnosis of rare diseases by clinicians. In this work we aimed at developing a computational approach to aid in that initial diagnosis. We also aimed at implementing this approach in a user friendly web prototype...
2016: PeerJ
N Griffon, M Schuers, F Dhombres, T Merabti, G Kerdelhué, L Rollin, S J Darmoni
BACKGROUND: Despite international initiatives like Orphanet, it remains difficult to find up-to-date information about rare diseases. The aim of this study is to propose an exhaustive set of queries for PubMed based on terminological knowledge and to evaluate it versus the queries based on expertise provided by the most frequently used resource in Europe: Orphanet. METHODS: Four rare disease terminologies (MeSH, OMIM, HPO and HRDO) were manually mapped to each other permitting the automatic creation of expended terminological queries for rare diseases...
August 2, 2016: BMC Medical Informatics and Decision Making
Pia Pohjola, Victoria Hedley, Kate Bushby, Helena Kääriäinen
As the availability of genetic tests has grown rapidly during the last decade along with the increasing knowledge of the genetic background of rare inherited diseases, sending DNA samples to another country for analysis has become more of a routine than an exception in clinical diagnostics. Nonetheless, few studies of cross-border genetic testing of rare diseases in the European Union (EU) have been carried out, and data about the challenges and problems related to cross-border testing are lacking. The purpose of this study was to investigate the experiences of the molecular genetic laboratories and the clinical genetics units concerning the cross-border genetic testing of rare diseases in the Member States of the EU...
November 2016: European Journal of Human Genetics: EJHG
Dmitry Victorovich Garbuzenko, Nikolay Olegovich Arefyev, Dmitry Vladimirovich Belov
PubMed, EMBASE, Orphanet, MIDLINE, Google Scholar and Cochrane Library were searched for articles published between 1983 and 2015. Relevant articles were selected by using the following terms: "Liver cirrhosis", "Endothelial dysfunction", "Sinusoidal remodeling", "Intrahepatic angiogenesis" and "Pathogenesis of portal hypertension". Then the reference lists of identified articles were searched for other relevant publications as well. Besides gross hepatic structural disorders related to diffuse fibrosis and formation of regenerative nodules, the complex morphofunctional rearrangement of the hepatic microvascular bed and intrahepatic angiogenesis also play important roles in hemodynamic disturbances in liver cirrhosis...
June 8, 2016: World Journal of Hepatology
Evangelos Minos, Robert J Barry, Sue Southworth, Annie Folkard, Philip I Murray, Jay S Duker, Pearse A Keane, Alastair K Denniston
Birdshot chorioretinopathy (BCR) is a rare form of chronic, bilateral, posterior uveitis with a distinctive clinical phenotype, and a strong association with HLA-A29. It predominantly affects people in middle age. Given its rarity, patients often encounter delays in diagnosis leading to delays in adequate treatment, and thus risking significant visual loss. Recent advances have helped increase our understanding of the underlying autoimmune mechanisms involved in disease pathogenesis, and new diagnostic approaches such as multimodality imaging have improved our ability to both diagnose and monitor disease activity...
May 12, 2016: Orphanet Journal of Rare Diseases
Gabriella DiMarco, Dane Hill, Steven R Feldman
BACKGROUND: Patient registries are datasets containing information on patients with a particular disease or patients who are undergoing a specific treatment. OBJECTIVE: Our objective was to search for and catalog the types of registries being used in dermatology and investigate their characteristics and uses. METHODS: We searched Google, the Registry of Patient Registries, Orphanet, and to compile a list of dermatology disease registries...
October 2016: Journal of the American Academy of Dermatology
Szegedi Márta, György Kosztolányi, Imre Boncz, Mária Judit Molnár
OBJECTIVES: Nervous system involvement is expected up to 60-70% in case of rare diseases. This article aims to present the financial methods and expenditures of rare neurological diseases' orphan medicinal products being financed in the frame of Hungarian social insurance system in 2012. METHODS: The subsidized orphan medicines were selected on the Orphanet portal 2012 while orphans financed by compessionate use were provided by the Hungarian National Insurance Fund Administration (OEP) database...
January 30, 2016: Ideggyógyászati Szemle
Aleksandra Jezela-Stanek, Dorota Karczmarewicz, Krystyna H Chrzanowska, Małgorzata Krajewska-Walasek
Orphanet is an international project aiming to help in improvement the diagnostic process, care and treatment of patients with rare diseases, and to provide information on development in research and new therapy. Orphanet is currently represented in 38 countries. The infrastructure and coordination activities are jointly funded by Inserm, the French Directorate General for Health, and the European Commission. Moreover, certain services are specially funded by other partners. Orphanet's activities in each country of the network are partially financed by national institutions and(or) specific contracts...
October 2015: Developmental Period Medicine
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