21 results on '"Valentina Vélez-Santamaría"'
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2. ClinPrior: an algorithm for diagnosis and novel gene discovery by network-based prioritization
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Agatha Schlüter, Valentina Vélez-Santamaría, Edgard Verdura, Agustí Rodríguez-Palmero, Montserrat Ruiz, Stéphane Fourcade, Laura Planas-Serra, Nathalie Launay, Cristina Guilera, Juan José Martínez, Christian Homedes-Pedret, M. Antonia Albertí-Aguiló, Miren Zulaika, Itxaso Martí, Mónica Troncoso, Miguel Tomás-Vila, Gemma Bullich, M. Asunción García-Pérez, María-Jesús Sobrido-Gómez, Eduardo López-Laso, Carme Fons, Mireia Del Toro, Alfons Macaya, HSP/ataxia workgroup, Sergi Beltran, Luis G. Gutiérrez-Solana, Luis A. Pérez-Jurado, Sergio Aguilera-Albesa, Adolfo López de Munain, Carlos Casasnovas, and Aurora Pujol
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Algorithm ,WES/WGS ,HPOs ,Variant prioritization ,Interactome ,Hereditary spastic paraplegia ,Medicine ,Genetics ,QH426-470 - Abstract
Abstract Background Whole-exome sequencing (WES) and whole-genome sequencing (WGS) have become indispensable tools to solve rare Mendelian genetic conditions. Nevertheless, there is still an urgent need for sensitive, fast algorithms to maximise WES/WGS diagnostic yield in rare disease patients. Most tools devoted to this aim take advantage of patient phenotype information for prioritization of genomic data, although are often limited by incomplete gene-phenotype knowledge stored in biomedical databases and a lack of proper benchmarking on real-world patient cohorts. Methods We developed ClinPrior, a novel method for the analysis of WES/WGS data that ranks candidate causal variants based on the patient’s standardized phenotypic features (in Human Phenotype Ontology (HPO) terms). The algorithm propagates the data through an interactome network-based prioritization approach. This algorithm was thoroughly benchmarked using a synthetic patient cohort and was subsequently tested on a heterogeneous prospective, real-world series of 135 families affected by hereditary spastic paraplegia (HSP) and/or cerebellar ataxia (CA). Results ClinPrior successfully identified causative variants achieving a final positive diagnostic yield of 70% in our real-world cohort. This includes 10 novel candidate genes not previously associated with disease, 7 of which were functionally validated within this project. We used the knowledge generated by ClinPrior to create a specific interactome for HSP/CA disorders thus enabling future diagnoses as well as the discovery of novel disease genes. Conclusions ClinPrior is an algorithm that uses standardized phenotype information and interactome data to improve clinical genomic diagnosis. It helps in identifying atypical cases and efficiently predicts novel disease-causing genes. This leads to increasing diagnostic yield, shortening of the diagnostic Odysseys and advancing our understanding of human illnesses.
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- 2023
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3. Myasthenia gravis exacerbation after melatonin administration: case series from a tertiary referral centre
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Velina Nedkova-Hristova, Valentina Vélez-Santamaría, and Carlos Casasnovas
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Melatonin ,Myasthenia gravis ,Corticosteroid ,Immunosuppressant ,Case report ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Myasthenia gravis is an autoimmune disease mediated by antibodies against proteins associated with the postsynaptic membrane of the neuromuscular junction. Several drugs may trigger an exacerbation of the disease. Melatonin supplements are widely used for the treatment of insomnia as they are well tolerated with few side effects. The role of melatonin in the immune system and its effects in autoimmune disorders remain uncertain. Case presentation We identified three patients in our referral centre from 2014 to 2019 who presented a worsening within days or weeks of starting melatonin. Two of them stopped the treatment without clinical improvement in the next week. Increasing dose of corticosteroids did not lead to clinical improvement in the next month and one of the patients was finally administered intravenous immunoglobulins. Conclusion Melatonin may trigger exacerbations of myasthenia gravis, probably due to an upregulation of the adaptive immune system and an interaction with the corticosteroids and other immunosuppressant treatments. We consider that melatonin should be administered with caution in these patients.
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- 2020
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4. Intravenous immunoglobulins may prevent prednisone-exacerbation in myasthenia gravis
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Laura Díez-Porras, Christian Homedes, Maria Antonia Alberti, Valentina Vélez-Santamaría, and Carlos Casasnovas
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Medicine ,Science - Abstract
Abstract Corticosteroids may produce a paradoxical worsening of myasthenia gravis (MG) symptoms within the first weeks of treatment. We therefore wanted to assess the hypothesis that a prior infusion of intravenous immunoglobulin (IVIG) may have a protective effect. Our primary objectives were to show that the coadministration of immunoglobulins and glucocorticoids is safe and effective for controlling myasthenic symptoms, and to compare the exacerbation rate with this approach and historical practice without IVIG. We recruited 45 patients with generalized MG who required corticosteroids for the first time and we gave all IVIG before starting the full doses of prednisone. Monitoring was performed with validated scales, questionnaires, and blood tests over a 6-week period. Only 4.4% had severe adverse effects related to IVIG and 86.7% improved clinically. Notably, only 2.2% had a paradoxical symptom exacerbation in the first weeks of starting prednisone, which was statistically lower than the 42% reported in a historical series. We conclude that adjuvant therapy with IVIG when starting prednisone for the first time in patients with generalized MG is safe and effective. Given that the rate of paradoxical worsening was lower than that previously reported, the addition of IVIG may have a protective effect against such exacerbations.
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- 2020
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5. Eculizumab as a promising treatment in thymoma-associated myasthenia gravis
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Valentina Vélez-Santamaría, Velina Nedkova, Laura Díez, Christian Homedes, M. Antonia Alberti, and Carlos Casasnovas
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Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Myasthenia gravis is a chronic autoimmune disorder caused by antibodies directed against the neuromuscular junction. Some patients may have an associated thymoma, which confers a worse prognosis. Eculizumab, a monoclonal antibody that inhibits the activation of terminal complement, has recently been approved for the treatment of refractory generalized myasthenia gravis. This is an early case report of thymoma-associated refractory myasthenia gravis successfully treated with eculizumab in a real-world setting.
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- 2020
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6. Seizures and COVID-19: Results from the Spanish Society of Neurology’s COVID-19 registry
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Santiago Fernández Fernández, Javier Ricardo Pérez Sánchez, Guillermo Hernández Pérez, María Rabasa Pérez, Cristina Guijarro Castro, Guilherme Carvalho Monteiro, Valentina Vélez-Santamaría, David García-Azorín, and David Ezpeleta
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Epilepsy ,Neurology ,Seizures ,Physiology (medical) ,COVID-19 ,Humans ,Anticonvulsants ,Electroencephalography ,Surgery ,Epilepsy, Tonic-Clonic ,Registries ,Neurology (clinical) ,General Medicine - Abstract
We describea series of patients with COVID-19 who presented with seizures, reported in the Spanish Society of Neurology's COVID-19 Registry. This observational, descriptive,multicentre, registry-based study includes patients with confirmed COVID-19 who experienced seizures during active infection.Wedescribe theclinicalpresentation of COVID-19,seizures,and resultsof complementary tests.Wealsodescribe the suspectedaetiologyof the seizures. Of 232 reported cases, 26 (11.2%) presented with seizures;7 of these patients (26.9%) had prior history of epilepsy, whereas the remaining 19 (73.1%) had no history of seizures.In most cases, seizures presented on days 0 and 7 after onset of COVID-19. By seizure type, 8 patients (30.7%) presentedgeneralised tonic-clonic seizures, 7 (26.9%) status epilepticus, 8 (30.7%) focal impaired-awareness seizures, and 4 (11.7%) secondary generalised seizures.Six patients (23.1%) also presented other neurological symptoms, includingaltered mental status and decreased level of consciousness. Predisposing factors for seizures (eg, dementia, tumour, cerebrovascular disease) were observed in 10 of the 19 patients with no prior history of epilepsy (52.6%). Patients with COVID-19 may present with seizures over the course of the disease,either alone or in the context of encephalopathy.Seizures may present in patients with no prior history of epilepsy; however, most of these patients present predisposing factors.
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- 2022
7. Biallelic variants in SLC35B2 cause a novel chondrodysplasia with hypomyelinating leukodystrophy
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Alessandra Guasto, Johanne Dubail, Sergio Aguilera-Albesa, Chiara Paganini, Catherine Vanhulle, Walid Haouari, Nerea Gorría-Redondo, Elena Aznal-Sainz, Nathalie Boddaert, Laura Planas-Serra, Agatha Schlüter, Valentina Vélez-Santamaría, Edgard Verdura, Arnaud Bruneel, Antonio Rossi, Céline Huber, Aurora Pujol, and Valérie Cormier-Daire
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Sulfate Transporters ,Intellectual Disability ,Homozygote ,Exome Sequencing ,Humans ,Proteoglycans ,RNA, Messenger ,Neurology (clinical) - Abstract
Sulphated proteoglycans are essential in skeletal and brain development. Recently, pathogenic variants in genes encoding proteins involved in the proteoglycan biosynthesis have been identified in a range of chondrodysplasia associated with intellectual disability. Nevertheless, several patients remain with unidentified molecular basis. This study aimed to contribute to the deciphering of new molecular bases in patients with chondrodysplasia and neurodevelopmental disease. Exome sequencing was performed to identify pathogenic variants in patients presenting with chondrodysplasia and intellectual disability. The pathogenic effects of the potentially causative variants were analysed by functional studies. We identified homozygous variants (c.1218_1220del and c.1224_1225del) in SLC35B2 in two patients with pre- and postnatal growth retardation, scoliosis, severe motor and intellectual disabilities and hypomyelinating leukodystrophy. By functional analyses, we showed that the variants affect SLC35B2 mRNA expression and protein subcellular localization leading to a functional impairment of the protein. Consistent with those results, we detected proteoglycan sulphation impairment in SLC35B2 patient fibroblasts and serum. Our data support that SLC35B2 functional impairment causes a novel syndromic chondrodysplasia with hypomyelinating leukodystrophy, most likely through a proteoglycan sulphation defect. This is the first time that SLC35B2 variants are associated with bone and brain development in human.
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- 2022
8. Hereditary Transthyretin Amyloidosis with Polyneuropathy: Monitoring and Management
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Valentina Vélez-Santamaría, Velina Nedkova-Hristova, Moisés Morales de la Prida, and Carlos Casasnovas
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Patient monitoring ,Amyloid ,Malalties hereditàries ,Amiloïdosi ,Monitoratge de pacients ,Amiloides ,Amyloidosis ,General Medicine ,Genetic diseases - Abstract
Our aim in this review is to discuss current treatments and investigational products and their effect on patients with hereditary transthyretin amyloidosis with polyneuropathy (ATTRv-PN) and provide suggestions for monitoring disease progression and treatment efficacy.
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- 2022
9. Treatment With Diflunisal in Domino Liver Transplant Recipients With Acquired Amyloid Neuropathy
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Velina Nedkova-Hristova, Carmen Baliellas, José González-Costello, Laura Lladó, Emma González-Vilatarsana, Valentina Vélez-Santamaría, and Carlos Casasnovas
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Malalties del sistema nerviós ,Transplantation ,Humans ,Trasplantament hepàtic ,Nervous system Diseases ,Longitudinal Studies ,Amyloid Neuropathies ,Diflunisal ,Hepatic transplantation ,Transplant Recipients ,Retrospective Studies - Abstract
Objectives: To analyze the efficacy and tolerability of diflunisal for the treatment of acquired amyloid neuropathy in domino liver transplant recipients.Methods: We performed a retrospective longitudinal study of prospectively collected data for all domino liver transplant recipients with acquired amyloid neuropathy who received diflunisal at our hospital. Neurological deterioration was defined as an score increase of >= 2 points from baseline on the Neurological Impairment Scale/Neurological Impairment Scale-Lower Limbs.Results: Twelve patients who had received compassionate use treatment with diflunisal were identified, of whom seven had follow-up data for >= 12 months. Five patients (71.4%) presented with neurological deterioration on the Neurological Impairment Scale after 12 months (p = 0.0382). The main adverse effects were cardiovascular and renal, leading to diflunisal being stopped in five patients and the dose being reduced in two patients.Conclusion: Our study suggests that most domino liver transplant recipients with acquired amyloid neuropathy will develop neurological deterioration by 12 months of treatment with diflunisal. This therapy was also associated with a high incidence of adverse effects and low treatment retention. The low efficacy and low tolerability of diflunisal treatment encourage the search for new therapeutic options.
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- 2022
10. Patisiran treatment in patients with hereditary transthyretin-mediated amyloidosis with polyneuropathy after liver transplantation
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Schmidt, Hartmut, Wixner, Jonas, Planté-Bordeneuve, Violaine, Muñoz-Beamud, Francisco, Lladó, Laura, Gillmore, Julian D., Mazzeo, Anna, Li, Xingyu, Arum, Seth, Jay, Patrick Y., Adams, David, Langestroer, Christel, Huesing-Kabar, Anna, Schilling, Matthias, Kabar, Iyad, Backlund, Rolf, Anan, Intissar, Nordh, Erik, Uneus, Erika, Pilebro, Björn, Englund, Ulrika, Coelho, Teresa, Novais, Marta, Perez, Javier, Martins da Silva, Ana, Pesseguerio Miranda, Helena, Ramalho, Joana, Monte, Raquel, Alves, Cristina, Cardaso, Ines, Guimaraes, Nádia, Gentile, Luca, Russo, Massimo, Di Bella, Gianluca, Gaouar, Amina, Cauquil-Michon, Cécile, Kounis, Ilias, Echaniz-Laguna, Andoni, Stéphant, Maëva, Rakotondratafika, Fetra, Boubrit, Yasmine, Labeyrie, Celine, Focsenaunu, Cecile, Le Corvoisier, Phillippe, Ayache, Samar S., Gendre, Thierry, Vervoitte, Laetitia, Arrouasse, Raphaele, Gragera Martinez, Alvaro, Borrachero, Cristina, Manovel, Ana, Diaz Rodriguez, Eusebio, Gutiérrez Gándara, Marta, Fabra Jiménez, Elena, Valentina Vélez Santamaría, Patricia, Martínez Vilar, Yurema, Cachero, Alba, Rannigan, Lisa, Fontana, Marianna, Orrell, Richard, Louth, Sarah, Chacko, Liza, Varughese, Sindhu, Throburn, Douglas, Cohen, Oliver, Law, Steven, Smit, Angelique, and Strehina, Svetla
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liver allograft function/dysfunction ,Neurologi ,Molecular biology ,Medizin ,Trasplantament hepàtic ,clinical research/practice ,Polyneuropathies ,Clinical trials ,patient survival ,small interfering RNA [molecular biology] ,Immunology and Allergy ,Humans ,Prealbumin ,Pharmacology (medical) ,RNA, Small Interfering ,Biologia molecular ,Transplantation ,Amyloid Neuropathies, Familial ,clinical trial ,Amyloidosis ,Liver Transplantation ,Neurology ,Quality of Life ,Amiloïdosi ,pharmacology ,Hepatic transplantation ,liver transplantation/hepatology ,Assaigs clínics - Abstract
Hereditary transthyretin-mediated (hATTR) amyloidosis, or ATTRv amyloidosis, is a progressive disease, for which liver transplantation (LT) has been a long-standing treatment. However, disease progression continues post-LT. This Phase 3b, open-label trial evaluated efficacy and safety of patisiran in patients with ATTRv amyloidosis with polyneuropathy progression post-LT. Primary endpoint was median transthyretin (TTR) reduction from baseline. Twenty-three patients received patisiran for 12 months alongside immunosuppression regimens. Patisiran elicited a rapid, sustained TTR reduction (median reduction [Months 6 and 12 average], 91.0%; 95% CI: 86.1%–92.3%); improved neuropathy, quality of life, and autonomic symptoms from baseline to Month 12 (mean change [SEM], Neuropathy Impairment Score, −3.7 [2.7]; Norfolk Quality of Life-Diabetic Neuropathy questionnaire, −6.5 [4.9]; least-squares mean [SEM], Composite Autonomic Symptom Score-31, −5.0 [2.6]); and stabilized disability (Rasch-built Overall Disability Scale) and nutritional status (modified body mass index). Adverse events were mild or moderate; five patients experienced ≥1 serious adverse event. Most patients had normal liver function tests. One patient experienced transplant rejection consistent with inadequate immunosuppression, remained on patisiran, and completed the study. In conclusion, patisiran reduced serum TTR, was well tolerated, and improved or stabilized key disease impairment measures in patients with ATTRv amyloidosis with polyneuropathy progression post-LT (www.clinicaltrials.gov NCT03862807). in press
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- 2022
11. Diagnosis of Genetic White Matter Disorders by Singleton Whole-Exome and Genome Sequencing Using Interactome-Driven Prioritization
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Agatha, Schlüter, Agustí, Rodríguez-Palmero, Edgard, Verdura, Valentina, Vélez-Santamaría, Montserrat, Ruiz, Stéphane, Fourcade, Laura, Planas-Serra, Juan José, Martínez, Cristina, Guilera, Marisa, Girós, Rafael, Artuch, María Eugenia, Yoldi, Mar, O'Callaghan, Angels, García-Cazorla, Judith, Armstrong, Itxaso, Marti, Elisabet, Mondragón Rezola, Claire, Redin, Jean Louis, Mandel, David, Conejo, Concepción, Sierra-Córcoles, Sergi, Beltrán, Marta, Gut, Elida, Vázquez, Mireia, Del Toro, Mónica, Troncoso, Luis A, Pérez-Jurado, Luis G, Gutiérrez-Solana, Adolfo, López de Munain, Carlos, Casasnovas, Sergio, Aguilera-Albesa, Alfons, Macaya, Aurora, Pujol, and Juan Francisco, V Azquez
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Human genome ,Base Sequence ,Whole Genome Sequencing ,Malalties del sistema nerviós central ,Genomics ,Genoma humà ,White Matter ,Fenotip ,Genòmica ,Phenotype ,Central Nervous System Diseases ,Exome Sequencing ,Malalties hereditàries ,Humans ,Exome ,Neurology (clinical) ,Genetic diseases - Abstract
Background and ObjectivesGenetic white matter disorders (GWMD) are of heterogeneous origin, with >100 causal genes identified to date. Classic targeted approaches achieve a molecular diagnosis in only half of all patients. We aimed to determine the clinical utility of singleton whole-exome sequencing and whole-genome sequencing (sWES-WGS) interpreted with a phenotype- and interactome-driven prioritization algorithm to diagnose GWMD while identifying novel phenotypes and candidate genes.MethodsA case series of patients of all ages with undiagnosed GWMD despite extensive standard-of-care paraclinical studies were recruited between April 2017 and December 2019 in a collaborative study at the Bellvitge Biomedical Research Institute (IDIBELL) and neurology units of tertiary Spanish hospitals. We ran sWES and WGS and applied our interactome-prioritization algorithm based on the network expansion of a seed group of GWMD-related genes derived from the Human Phenotype Ontology terms of each patient.ResultsWe evaluated 126 patients (101 children and 25 adults) with ages ranging from 1 month to 74 years. We obtained a first molecular diagnosis by singleton WES in 59% of cases, which increased to 68% after annual reanalysis, and reached 72% after WGS was performed in 16 of the remaining negative cases. We identified variants in 57 different genes among 91 diagnosed cases, with the most frequent being RNASEH2B, EIF2B5, POLR3A, and PLP1, and a dual diagnosis underlying complex phenotypes in 6 families, underscoring the importance of genomic analysis to solve these cases. We discovered 9 candidate genes causing novel diseases and propose additional putative novel candidate genes for yet-to-be discovered GWMD.DiscussionOur strategy enables a high diagnostic yield and is a good alternative to trio WES/WGS for GWMD. It shortens the time to diagnosis compared to the classical targeted approach, thus optimizing appropriate management. Furthermore, the interactome-driven prioritization pipeline enables the discovery of novel disease-causing genes and phenotypes, and predicts novel putative candidate genes, shedding light on etiopathogenic mechanisms that are pivotal for myelin generation and maintenance.
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- 2021
12. Lack of association between classical HLA genes and asymptomatic SARS-CoV-2 infection
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Astrid Marchal, Elizabeth T. Cirulli, Iva Neveux, Evangelos Bellos, Ryan S. Thwaites, Kelly M. Schiabor Barrett, Yu Zhang, Ivana Nemes-Bokun, Mariya Kalinova, Andrew Catchpole, Stuart G. Tangye, András N. Spaan, Justin B. Lack, Jade Ghosn, Charles Burdet, Guy Gorochov, Florence Tubach, Pierre Hausfater, Clifton L. Dalgard, Shen-Ying Zhang, Qian Zhang, Christopher Chiu, Jacques Fellay, Joseph J. Grzymski, Vanessa Sancho-Shimizu, Laurent Abel, Jean-Laurent Casanova, Aurélie Cobat, Alexandre Bolze, Alessandro Aiuti, Saleh Al-Muhsen, Fahd Al-Mulla, Ali Amara, Mark S. Anderson, Evangelos Andreakos, Andrés A. Arias, Lisa M. Arkin, Hagit Baris Feldman, Paul Bastard, Alexandre Belot, Catherine M. Biggs, Dusan Bogunovic, Anastasiia Bondarenko, Alessandro Borghesi, Ahmed A. Bousfiha, Petter Brodin, Yenan Bryceson, Manish J. Butte, Giorgio Casari, John Christodoulou, Roger Colobran, Antonio Condino-Neto, Stefan N. Constantinescu, Megan A. Cooper, Murkesh Desai, Beth A. Drolet, Xavier Duval, Jamila El Baghdadi, Philippine Eloy, Sara Espinosa-Padilla, Carlos Flores, José Luis Franco, Antoine Froidure, Peter K. Gregersen, Bodo Grimbacher, Filomeen Haerynck, David Hagin, Rabih Halwani, Lennart Hammarström, James R. Heath, Elena W.Y. Hsieh, Eystein Husebye, Kohsuke Imai, Yuval Itan, Emmanuelle Jouanguy, Elżbieta Kaja, Timokratis Karamitros, Kai Kisand, Cheng-Lung Ku, Yu-Lung Lau, Yun Ling, Carrie L. Lucas, Tom Maniatis, Davood Mansouri, László Maródi, France Mentré, Isabelle Meyts, Joshua D. Milner, Kristina Mironska, Trine H. Mogensen, Tomohiro Morio, Lisa F.P. Ng, Luigi D. Notarangelo, Antonio Novelli, Giuseppe Novelli, Cliona O'Farrelly, Satoshi Okada, Keisuke Okamoto, Tayfun Ozcelik, Qiang Pan-Hammarström, Jean W. Pape, Rebeca Perez de Diego, Jordi Perez-Tur, David S. Perlin, Graziano Pesole, Anna M. Planas, Carolina Prando, Aurora Pujol, Anne Puel, Lluis Quintana-Murci, Sathishkumar Ramaswamy, Laurent Renia, Igor Resnick, Carlos Rodríguez-Gallego, Anna Sediva, Mikko R.J. Seppänen, Mohammad Shahrooei, Anna Shcherbina, Ondrej Slaby, Andrew L. Snow, Pere Soler-Palacín, Vassili Soumelis, Ivan Tancevski, Ahmad Abou Tayoun, Şehime Gülsün Temel, Christian Thorball, Pierre Tiberghien, Sophie Trouillet-Assant, Stuart E. Turvey, K. M. Furkan Uddin, Mohammed J. Uddin, Diederik van de Beek, Donald C. Vinh, Horst von Bernuth, Joost Wauters, Mayana Zatz, Pawel Zawadzki, Serge Bureau, Yannick Vacher, Anne Gysembergh-Houal, Lauren Demerville, Abla Benleulmi-Chaachoua, Sebastien Abad, Radhiya Abassi, Abdelrafie Abdellaoui, Abdelkrim Abdelmalek, Hendy Abdoul, Helene Abergel, Fariza Abeud, Sophie Abgrall, Noemie Abisror, Marylise Adechian, Nordine Aderdour, Hakeem Farid Admane, Frederic Adnet, Sara Afritt, Helene Agostini, Claire Aguilar, Sophie Agut, Tommaso Francesco Aiello, Marc Ait Kaci, Hafid Ait Oufella, Gokula Ajeenthiravasan, Virginie Alauzy, Fanny Alby-Laurent, Lucie Allard, Marie-Alexandra Alyanakian, Blanca Amador Borrero, Sabrina Amam, Lucile Amrouche, Marc Andronikof, Dany Anglicheau, Nadia Anguel, Djillali Annane, Mohammed Aounzou, Caroline Aparicio, Gladys Aratus, Jean-Benoit Arlet, Jeremy Arzoine, Elisabeth Aslangul, Mona Assefi, Adeline Aubry, Laetitia Audiffred, Etienne Audureau, Christelle Nathalie Auger, Jean-Charles Auregan, Celine Awotar, Sonia Ayllon Milla, Delphine Azan, Laurene Azemar, Billal Azzouguen, Marwa Bachir Elrufaai, Aïda Badsi, Prissile Bakouboula, Coline Balcerowiak, Fanta Balde, Elodie Baldivia, Eliane-Flore Bangamingo, Amandine Baptiste, Fanny Baran-Marszak, Caroline Barau, Nathalie Barget, Flore Baronnet, Romain Barthelemy, Jean-Luc Baudel, Camille Baudry, Elodie Baudry, Laurent Beaugerie, Adel Belamri, Nicolas Belaube, Rhida Belilita, Pierre Bellassen, Rawan Belmokhtar, Isabel Beltran, Ruben Benainous, Mourad Benallaoua, Robert Benamouzig, Amélie Benbara, Jaouad Benhida, Anis Benkhelouf, Jihene Benlagha, Chahinez Benmostafa, Skander Benothmane, Miassa Bentifraouine, Laurence Berard, Quentin Bernier, Enora Berti, Astrid Bertier, Laure Berton, Simon Bessis, Alexandra Beurton, Celine Bianco, Clara Bianquis, Frank Bidar, Philippe Blanche, Clarisse Blayau, Alexandre Bleibtreu, Emmanuelle Blin, Coralie Bloch-Queyrat, Marie-Christophe Boissier, Diane Bollens, Marion Bolzoni, Rudy pierre Bompard, Nicolas Bonnet, Justine Bonnouvrier, Shirmonecrystal Botha, Wissam Boucenna, Fatiha Bouchama, Olivier Bouchaud, Hanane Bouchghoul, Taoueslylia Boudjebla, Noel Boudjema, Catherine Bouffard, Adrien Bougle, Meriem Bouguerra, Leila Bouras, Agnes Bourcier, Anne Bourgarit Durand, Anne Bourrier, Fabrice Bouscarat, Diane Bouvry, Nesrine Bouziri, Ons Bouzrara, Sarah Bribier, Delphine Brugier, Melanie Brunel, Eida Bui, Anne Buisson, Iryna Bukreyeva, Côme Bureau, Jacques Cadranel, Johann Cailhol, Ruxandra Calin, Clara Campos Vega, Pauline Canavaggio, Marta Cancella, Delphine Cantin, Albert Cao, Lionel Carbillon, Nicolas Carlier, Clementine Cassard, Guylaine Castor, Marion Cauchy, Olivier Cha, Benjamin Chaigne, Salima Challal, Karine Champion, Patrick Chariot, Julie Chas, Simon Chauveau, Anthony Chauvin, Clement Chauvin, Nathalie Chavarot, Kamélia Chebbout, Mustapha Cherai, Ilaria Cherubini, Amelie Chevalier, Thibault Chiarabini, Thierry Chinet, Richard Chocron, Pascaline Choinier, Juliette Chommeloux, Christophe Choquet, Laure Choupeaux, Benjamin Chousterman, Dragosmarius Ciocan, Ada Clarke, Gaëlle Clavere, Florian Clavier, Karine Clement, Sebastien Clerc, Yves Cohen, Fleur Cohen, Adrien Cohen, Audrey Coilly, Hester Colboc, Pauline Colin, Magalie Collet, Chloé Comarmond, Emeline Combacon, Alain Combes, Celine Comparon, Jean-Michel Constantin, Hugues Cordel, Anne-Gael Cordier, Adrien Costantini, Nathalie Costedoat Chalumeau, Camille Couffignal, Doriane Coupeau, Alain Creange, Yannie Cuvillier Lamarre, Charlène Da Silveira, Sandrine Dautheville Guibal El Kayani, Nathalie De Castro, Yann De Rycke, Lucie Del Pozo, Quentin Delannoy, Mathieu Delay, Robin Deleris, Juliette Delforge, Laëtitia Delphine, Noemie Demare, Sophie Demeret, Alexandre Demoule, Aurore Deniau, François Depret, Sophie Derolez, Ouda Derradji, Nawal Derridj, Vincent Descamps, Lydia Deschamps, Celine Desconclois, Cyrielle Desnos, Karine Desongins, Robin Dhote, Benjamin Diallo, Morgane Didier, Myriam Diemer, Stephane Diez, Juliette Djadi-Prat, Fatima-Zohra Djamouri Monnory, Siham Djebara, Naoual Djebra, Minette Djietcheu, Hadjer Djillali, Nouara Djouadi, Severine Donneger, Catarina Dos Santos, Nathalie Dournon, Martin Dres, Laura Droctove, Marie Drogrey, Margot Dropy, Elodie Drouet, Valérie Dubosq, Evelyne Dubreucq, Estelle Dubus, Boris Duchemann, Thibault Duchenoy, Emmanuel Dudoignon, Romain Dufau, Florence Dumas, Clara Duran, Emmanuelle Duron, Antoine Durrbach, Claudine Duvivier, Nathan Ebstein, Jihane El Khalifa, Alexandre Elabbadi, Caroline Elie, Gabriel Ernotte, Anne Esling, Martin Etienne, Xavier Eyer, Muriel Sarah Fartoukh, Takoua Fayali, Marion Fermaut, Arianna Fiorentino, Souha Fliss, Marie-Céline Fournier, Benjamin Fournier, Hélène Francois, Olivia Freynet, Yvann Frigout, Isaure Fromont, Axelle Fuentes, Thomas Furet, Joris Galand, Marc Garnier, Agnes Gaubert, Stéphane Gaudry, Samuel Gaugain, Damien Gauthier, Maxime Gautier, Sophie Georgin-Lavialle, Daniela Geromin, Mohamed Ghalayini, Bijan Ghaleh, Myriam Ghezal, Aude Gibelin, Linda Gimeno, Benoit Girard, Bénédicte Giroux Leprieur, Doryan Gomes, Elisabete Gomes-Pires, Anne Gouge, Amel Gouja, Helene Goulet, Sylvain Goupil, Jeanne Goupil De Bouille, Julien Gras, Segolene Greffe, Lamiae Grimaldi, Paul Guedeney, Bertrand Guidet, Matthias Guillo, Mariechristelle Gulczynski, Tassadit Hadjam, Didier Haguenauer, Soumeya Hammal, Nadjib Hammoudi, Olivier Hanon, Anarole Harrois, Coraline Hautem, Guillaume Hekimian, Nicholas Heming, Olivier Hermine, Sylvie Ho, Marie Houllier, Benjamin Huot, Tessa Huscenot, Wafa Ibn Saied, Ghilas Ikherbane, Meriem Imarazene, Patrick Ingiliz, Lina Iratni, Stephane Jaureguiberry, Jean-Francois Jean-Marc, Deleena Jeyarajasingham, Pauline Jouany, Veronique Jouis, Clement Jourdaine, Ouifiya Kafif, Rim Kallala, Sandrine Katsahian, Lilit Kelesyan, Vixra Keo, Flora Ketz, Warda Khamis, Enfel Khelili, Mehdi Khellaf, Christy Gaëlla Kotokpo Youkou, Ilias Kounis, Gaelle Kpalma, Jessica Krause, Vincent Labbe, Karine Lacombe, Jean-Marc Lacorte, Anne Gaelle Lafont, Emmanuel Lafont, Lynda Lagha, Lionel Lamhaut, Aymeric Lancelot, Cecilia Landman, Fanny Lanternier, Cecile Larcheveque, Caroline Lascoux Combe, Ludovic Lassel, Benjamin Laverdant, Christophe Lavergne, Jean-Rémi Lavillegrand, Pompilia Lazureanu, Loïc Le Guennec, Lamia Leberre, Claire Leblanc, Marion Leboyer, Francois Lecomte, Marine Lecorre, Romain Leenhardt, Marylou Lefebvre, Bénédicte Lefebvre, Paul Legendre, Anne Leger, Laurence Legros, Justyna Legrosse, Sébastien Lehuunghia, Julien Lemarec, Jeremie Leporrier-Ext, Manon Lesein, Hubert Lesur, Vincent Levy, Albert Levy, Edwige Lopes, Amanda Lopes, Vanessa Lopez, Julien Lopinto, Olivier Lortholary, Badr Louadah, Bénédicte Loze, Marie-Laure Lucas, Axelle Lucasamichi, Liem Binh Luong, Arouna Magazimama-Ext, David Maingret, Lakhdar Mameri, Philippe Manivet, Cylia Mansouri, Estelle Marcault, Jonathan Marey, Nathalie Marin, Clémence Marois, Olivier Martin, Lou Martineau, Cannelle Martinez-Lopez, Pierre Martyniuck, Pauline Mary De Farcy, Nessrine Marzouk, Rafik Masmoudi, Alexandre Mebazaa, Frédéric Mechai, Fabio Mecozzi, Chamseddine Mediouni, Bruno Megarbane, Mohamed Meghadecha, Élodie Mejean, Arsene Mekinian, Nour Mekki Abdelhadi, Rania Mekni, Thinhinan Sabrina Meliti, Breno Melo Lima, Paris Meng, Soraya Merbah, Fadhila Messani, Yasmine Messaoudi, Baboo-Irwinsingh Mewasing, Lydia Meziane, Carole Michelot-Burger, Françoise Mignot, Fadi Hillary Minka, Makoto Miyara, Pierre Moine, Jean-Michel Molina, Anaïs Montegnies-Boulet, Alexandra Monti, Claire Montlahuc, Anne-Lise Montout, Alexandre Moores, Caroline Morbieu, Helene Mortelette, Stéphane Mouly, Rosita Muzaffar, Cherifa Iness Nacerddine, Marine Nadal, Hajer Nadif, Kladoum Nassarmadji, Pierre Natella, Sandrine Ndingamondze, Stefan Neraal, Caroline Nguyen, Bao N'Guyen, Isabelle Nion Larmurier, Luc Nlomenyengue, Nicolas Noel, Hilario Nunes, Edris Omar, Zineb Ouazene, Elise Ouedraogo, Wassila Ouelaa, Anissa Oukhedouma, Yasmina Ould Amara, Herve Oya, Johanna Oziel, Thomas Padilla, Elena Paillaud, Solenne Paiva, Beatrice Parfait, Perrine Parize, Christophe Parizot, Antoine Parrot, Arthur Pavot, Laetitia Peaudecerf, Frédéric Pene, Marion Pepin, Julie Pernet, Claire Pernin, Mylène Petit, Olivier Peyrony, Marie-Pierre Pietri, Olivia Pietri, Marc Pineton De Chambrun, Michelle Pinson, Claire Pintado, Valentine Piquard, Christine Pires, Benjamin Planquette, Sandrine Poirier, Anne-Laure Pomel, Stéphanie Pons, Diane Ponscarme, Annegaelle Pourcelot, Valérie Pourcher, Anne Pouvaret, Florian Prever, Miresta Previlon, Margot Prevost, Marie-Julie Provoost, Cyril Quemeneur, Cédric Rafat, Agathe Rami, Brigitte Ranque, Maurice Raphael, Jean Herle Raphalen, Anna Rastoin, Mathieu Raux, Amani Rebai, Michael Reby, Alexis Regent, Asma Regrag, Matthieu Resche-Rigon, Quentin Ressaire, Christian Richard, Mariecaroline Richard, Maxence Robert, Benjamin Rohaut, Camille Rolland-Debord, Jacques Ropers, Anne-Marie Roque-Afonso, Charlotte Rosso, Mélanie Rousseaux, Nabila Rousseaux, Swasti Roux, Lorène Roux, Claire Rouzaud, Antoine Rozes, Emma Rubenstein, Jean-Marc Sabate, Sheila Sabet, Sophie-Caroline Sacleux, Nathalie Saidenberg Kermanach, Faouzi Saliba, Dominique Salmon, Laurent Savale, Guillaume Savary, Rebecca Sberro, Anne Scemla, Frederic Schlemmer, Mathieu Schwartz, Saïd Sedfi, Samia Sefir-Kribel, Philippe Seksik, Pierre Sellier, Agathe Selves, Nicole Sembach, Luca Semerano, Marie-Victoire Senat, Damien Sene, Alexandra Serris, Lucile Sese, Naima Sghiouar, Johanna Sigaux, Martin Siguier, Johanne Silvain, Noémie Simon, Tabassome Simon, Lina Innes Skandri, Miassa Slimani, Aurélie Snauwaert, Harry Sokol, Heithem Soliman, Nisrine Soltani, Benjamin Soyer, Gabriel Steg, Lydia Suarez, Tali-Anne Szwebel, Kossi Taffame, Yacine Tandjaoui-Lambiotte, Claire Tantet, Mariagrazia Tateo, Igor Theodose, Pierre clement Thiebaud, Caroline Thomas, Kelly Tiercelet, Julie Tisserand, Carole Tomczak, Krystel Torelino, Fatima Touam-Ext, Lilia Toumi, Gustave Toury, Mireille Toy-Miou, Olivia Tran Dinh Thanh Lien, Alexy Trandinh, Jean-Marc Treluyer, Baptiste Trinque, Jennifer Truchot, Sarah Tubiana, Simone Tunesi, Matthieu Turpin, Agathe Turpin, Tomas Urbina, Rafael Usubillaga Narvaez, Yurdagul Uzunhan, Prabakar Vaittinadaayar, Arnaud Valent, Maelle Valentian, Nadia Valin, Hélène Vallet, Marina Vaz, Miguel-Alejandro Vazquezibarra, Benoit Vedie, Laetitia Velly, Celine Verstuyft, Cedric Viallette, Eric Vicaut, Dorothee Vignes, Damien Vimpere, Myriam Virlouvet, Guillaume Voiriot, Lena Voisot, Emmanuel Weiss, Nicolas Weiss, Anaïs Winchenne, Youri Yordanov, Lara Zafrani, Mohamad Zaidan, Wissem Zaidi, Cathia Zak, Aida Zarhrate-Ghoul, Ouassila Zatout, Suzanne Zeino, Michel Zeitouni, Naïma Zemirli, Lorene Zerah, Ounsa Zia, Marianne Ziol, Oceane Zolario, Julien Zuber, Claire Andrejak, François Angoulvant, Delphine Bachelet, Marie Bartoli, Romain Basmaci, Sylvie Behillil, Marine Beluze, Dehbia Benkerrou, Krishna Bhavsar, Lila Bouadma, Sabelline Bouchez, Maude Bouscambert, Minerva Cervantes-Gonzalez, Anissa Chair, Catherine Chirouze, Alexandra Coelho, Sandrine Couffin-Cadiergues, Eric d’Ortenzio, Marie-Pierre Debray, Laurene Deconinck, Dominique Deplanque, Diane Descamps, Mathilde Desvallée, Alpha Diallo, Alphonsine Diouf, Céline Dorival, François Dubos, Brigitte Elharrar, Vincent Enouf, Hélène Esperou, Marina Esposito-Farese, Manuel Etienne, Eglantine Ferrand Devouge, Nathalie Gault, Alexandre Gaymard, Tristan Gigante, Morgane Gilg, Jérémie Guedj, Alexandre Hoctin, Isabelle Hoffmann, Ikram Houas, Jean-Sébastien Hulot, Salma Jaafoura, Florentia Kaguelidou, Sabrina Kali, Antoine Khalil, Coralie Khan, Cédric Laouénan, Samira Laribi, Minh Le, Quentin Le Hingrat, Soizic Le Mestre, Hervé Le Nagard, François-Xavier Lescure, Sophie Letrou, Yves Levy, Bruno Lina, Guillaume Lingas, Jean-Christophe Lucet, Denis Malvy, Marina Mambert, Amina Meziane, Hugo Mouquet, Jimmy Mullaert, Nadège Neant, Duc Nguyen, Marion Noret, Saad Nseir, Aurélie Papadopoulos, Christelle Paul, Nathan Peiffer-Smadja, Thomas Perpoint, Ventzislava Petrov-Sanchez, Gilles Peytavin, Huong Pham, Olivier Picone, Oriane Puéchal, Christian Rabaud, Manuel Rosa-Calatrava, Bénédicte Rossignol, Patrick Rossignol, Carine Roy, Marion Schneider, Richa Su, Coralie Tardivon, Marie-Capucine Tellier, François Téoulé, Olivier Terrier, Jean-François Timsit, Christelle Tual, Sylvie Van Der Werf, Noémie Vanel, Aurélie Veislinger, Benoit Visseaux, Aurélie Wiedemann, Yazdan Yazdanpanah, Loubna Alavoine, Charlotte Charpentier, Aline Dechanet, Jean-Luc Ecobichon, Wahiba Frezouls, Nadhira Houhou, Jonathan Lehacaut, Pauline Manchon, Mariama Nouroudine, Caroline Quintin, Michael Thy, Sylvie van der Werf, Valérie Vignali, Abir Chahine, Nawal Waucquier, Maria-Claire Migaud, Félix Djossou, Mayka Mergeay-Fabre, Aude Lucarelli, Magalie Demar, Léa Bruneau, Patrick Gérardin, Adrien Maillot, Christine Payet, Bruno Laviolle, Fabrice Laine, Christophe Paris, Mireille Desille-Dugast, Julie Fouchard, Thierry Pistone, Pauline Perreau, Valérie Gissot, Carole L.E. Goas, Samatha Montagne, Lucie Richard, Kévin Bouiller, Maxime Desmarets, Alexandre Meunier, Marilou Bourgeon, Benjamin Lefévre, Hélène Jeulin, Karine Legrand, Sandra Lomazzi, Bernard Tardy, Amandine Gagneux-Brunon, Frédérique Bertholon, Elisabeth Botelho-Nevers, Christelle Kouakam, Leturque Nicolas, Layidé Roufai, Karine Amat, Hélène Espérou, Samia Hendou, Giuseppe Foti, Giuseppe Citerio, Ernesto Contro, Alberto Pesci, Maria Grazia Valsecchi, Marina Cazzaniga, Giacomo Bellani, Jorge Abad, Giulia Accordino, Micol Angelini, Sergio Aguilera-Albesa, Aina Aguiló-Cucurull, Esra Akyüz Özkan, Ilad Alavi Darazam, Jonathan Antonio Roblero Albisures, Juan C. Aldave, Miquel Alfonso Ramos, Taj Ali Khan, Anna Aliberti, Seyed Alireza Nadji, Gulsum Alkan, Suzan A. AlKhater, Jerome Allardet-Servent, Luis M. Allende, Rebeca Alonso-Arias, Mohammed S. Alshahrani, Laia Alsina, Zahir Amoura, Arnau Antolí, Romain Arrestier, Mélodie Aubart, Teresa Auguet, Iryna Avramenko, Gökhan Aytekin, Axelle Azot, Seiamak Bahram, Fanny Bajolle, Fausto Baldanti, Aurélie Baldolli, Maite Ballester, Benoit Barrou, Federica Barzaghi, Sabrina Basso, Gulsum Iclal Bayhan, Liliana Bezrodnik, Agurtzane Bilbao, Geraldine Blanchard-Rohner, Ignacio Blanco, Adeline Blandinières, Daniel Blázquez-Gamero, Marketa Bloomfield, Mireia Bolivar-Prados, Raphael Borie, Elisabeth Botdhlo-Nevers, Aurore Bousquet, David Boutolleau, Claire Bouvattier, Oksana Boyarchuk, Juliette Bravais, M. Luisa Briones, Marie-Eve Brunner, Raffaele Bruno, Maria Rita P. Bueno, Huda Bukhari, Jacinta Bustamante, Juan José Cáceres Agra, Ruggero Capra, Raphael Carapito, Maria Carrabba, Carlos Casasnovas, Marion Caseris, Irene Cassaniti, Martin Castelle, Francesco Castelli, Martín Castillo de Vera, Mateus V. Castro, Emilie Catherinot, Jale Bengi Celik, Alessandro Ceschi, Martin Chalumeau, Bruno Charbit, Cécile Boulanger, Père Clavé, Bonaventura Clotet, Anna Codina, Cloé Comarmond, Patrizia Comoli, Angelo G. Corsico, Taner Coşkuner, Aleksandar Cvetkovski, Cyril Cyrus, David Dalmau, François Danion, David Ross Darley, Vincent Das, Nicolas Dauby, Stéphane Dauger, Paul De Munte, Loic de Pontual, Amin Dehban, Geoffroy Delplancq, Isabelle Desguerre, Antonio Di Sabatino, Jean-Luc Diehl, Stephanie Dobbelaere, Elena Domínguez-Garrido, Clément Dubost, Olov Ekwall, Şefika Elmas Bozdemir, Marwa H. Elnagdy, Melike Emiroglu, Akifumi Endo, Emine Hafize Erdeniz, Selma Erol Aytekin, Maria Pilar Etxart Lasa, Romain Euvrard, Giovanna Fabio, Laurence Faivre, Antonin Falck, Muriel Fartoukh, Morgane Faure, Miguel Fernandez Arquero, Ricard Ferrer, Jose Ferreres, Bruno Francois, Victoria Fumadó, Kitty S.C. Fung, Francesca Fusco, Alenka Gagro, Blanca Garcia Solis, Pierre Garçon, Pascale Gaussem, Zeynep Gayretli, Juana Gil-Herrera, Laurent Gilardin, Audrey Giraud Gatineau, Mònica Girona-Alarcón, Karen Alejandra Cifuentes Godínez, Jean-Christophe Goffard, Nacho Gonzales, Luis I. Gonzalez-Granado, Rafaela González-Montelongo, Antoine Guerder, Belgin Gülhan, Victor Daniel Gumucio, Leif Gunnar Hanitsch, Jan Gunst, Marta Gut, Jérôme Hadjadj, Selda Hancerli, Tetyana Hariyan, Nevin Hatipoglu, Deniz Heppekcan, Elisa Hernandez-Brito, Po-ki Ho, María Soledad Holanda-Peña, Juan P. Horcajada, Sami Hraiech, Linda Humbert, Ivan F.N. Hung, Alejandro D. Iglesias, Antonio Íñigo-Campos, Matthieu Jamme, María Jesús Arranz, Marie-Thérèse Jimeno, Iolanda Jordan, Saliha Kanık-Yüksek, Yalcin Kara, Aydın Karahan, Adem Karbuz, Kadriye Kart Yasar, Ozgur Kasapcopur, Kenichi Kashimada, Sevgi Keles, Yasemin Kendir Demirkol, Yasutoshi Kido, Can Kizil, Ahmet Osman Kılıç, Adam Klocperk, Antonia Koutsoukou, Zbigniew J. Król, Hatem Ksouri, Paul Kuentz, Arthur M.C. Kwan, Yat Wah M. Kwan, Janette S.Y. Kwok, Jean-Christophe Lagier, David S.Y. Lam, Vicky Lampropoulou, Fleur Le Bourgeois, Yee-Sin Leo, Rafael Leon Lopez, Daniel Leung, Michael Levin, Michael Levy, Romain Lévy, Zhi Li, Daniele Lilleri, Edson Jose Adrian Bolanos Lima, Agnes Linglart, Eduardo López-Collazo, José M. Lorenzo-Salazar, Céline Louapre, Catherine Lubetzki, Kwok-Cheung Lung, Charles-Edouard Luyt, David C. Lye, Cinthia Magnone, Enrico Marchioni, Carola Marioli, Majid Marjani, Laura Marques, Jesus Marquez Pereira, Andrea Martín-Nalda, David Martínez Pueyo, Javier Martinez-Picado, Iciar Marzana, Carmen Mata-Martínez, Alexis Mathian, Larissa R.B. Matos, Gail V. Matthews, Julien Mayaux, Raquel McLaughlin-Garcia, Philippe Meersseman, Jean-Louis Mège, Armand Mekontso-Dessap, Isabelle Melki, Federica Meloni, Jean-François Meritet, Paolo Merlani, Özge Metin Akcan, Mehdi Mezidi, Isabelle Migeotte, Maude Millereux, Matthieu Million, Tristan Mirault, Clotilde Mircher, Mehdi Mirsaeidi, Yoko Mizoguchi, Bhavi P. Modi, Francesco Mojoli, Elsa Moncomble, Abián Montesdeoca Melián, Antonio Morales Martinez, Francisco Morandeira, Pierre-Emmanuel Morange, Clémence Mordacq, Guillaume Morelle, Stéphane J. Mouly, Adrián Muñoz-Barrera, Cyril Nafati, Shintaro Nagashima, Yu Nakagama, Bénédicte Neven, João Farela Neves, Yuk-Yung Ng, Hubert Nielly, Yeray Novoa Medina, Esmeralda Nuñez Cuadros, Semsi Nur Karabela, J. Gonzalo Ocejo-Vinyals, Mehdi Oualha, Amani Ouedrani, Tayfun Özçelik, Aslinur Ozkaya-Parlakay, Michele Pagani, Maria Papadaki, Philippe Parola, Tiffany Pascreau, Stéphane Paul, Estela Paz-Artal, Sigifredo Pedraza, Nancy Carolina González Pellecer, Silvia Pellegrini, Rebeca Pérez de Diego, Xosé Luis Pérez-Fernández, Aurélien Philippe, Quentin Philippot, Adrien Picod, Marc Pineton de Chambrun, Antonio Piralla, Laura Planas-Serra, Dominique Ploin, Julien Poissy, Géraldine Poncelet, Garyphallia Poulakou, Marie S. Pouletty, Persia Pourshahnazari, Jia Li Qiu-Chen, Paul Quentric, Thomas Rambaud, Didier Raoult, Violette Raoult, Anne-Sophie Rebillat, Claire Redin, Léa Resmini, Pilar Ricart, Jean-Christophe Richard, Raúl Rigo-Bonnin, Nadia Rivet, Jacques G. Rivière, Gemma Rocamora-Blanch, Mathieu P. Rodero, Carlos Rodrigo, Luis Antonio Rodriguez, Carlos Rodriguez-Gallego, Agustí Rodriguez-Palmero, Carolina Soledad Romero, Anya Rothenbuhler, Damien Roux, Nikoletta Rovina, Flore Rozenberg, Yvon Ruch, Montse Ruiz, Maria Yolanda Ruiz del Prado, Juan Carlos Ruiz-Rodriguez, Joan Sabater-Riera, Kai Saks, Maria Salagianni, Oliver Sanchez, Adrián Sánchez-Montalvá, Silvia Sánchez-Ramón, Laire Schidlowski, Agatha Schluter, Julien Schmidt, Matthieu Schmidt, Catharina Schuetz, Cyril E. Schweitzer, Francesco Scolari, Luis Seijo, Analia Gisela Seminario, Piseth Seng, Sevtap Senoglu, Mikko Seppänen, Alex Serra Llovich, Virginie Siguret, Eleni Siouti, David M. Smadja, Nikaia Smith, Ali Sobh, Xavier Solanich, Jordi Solé-Violán, Catherine Soler, Betül Sözeri, Giulia Maria Stella, Yuriy Stepanovskiy, Annabelle Stoclin, Fabio Taccone, Jean-Luc Taupin, Simon J. Tavernier, Loreto Vidaur Tello, Benjamin Terrier, Guillaume Thiery, Karolina Thorn, Caroline Thumerelle, Imran Tipu, Martin Tolstrup, Gabriele Tomasoni, Julie Toubiana, Josep Trenado Alvarez, Vasiliki Triantafyllia, Jesús Troya, Owen T.Y. Tsang, Liina Tserel, Eugene Y.K. Tso, Alessandra Tucci, Şadiye Kübra Tüter Öz, Matilde Valeria Ursini, Takanori Utsumi, Pierre Vabres, Juan Valencia-Ramos, Ana Maria Van Den Rym, Isabelle Vandernoot, Valentina Velez-Santamaria, Silvia Patricia Zuniga Veliz, Mateus C. Vidigal, Sébastien Viel, Cédric Villain, Marie E. Vilaire-Meunier, Judit Villar-García, Audrey Vincent, Dimitri Van der Linden, Alla Volokha, Fanny Vuotto, Els Wauters, Alan K.L. Wu, Tak-Chiu Wu, Aysun Yahşi, Osman Yesilbas, Mehmet Yildiz, Barnaby E. Young, Ufuk Yükselmiş, Marco Zecca, Valentina Zuccaro, Jens Van Praet, Bart N. Lambrecht, Eva Van Braeckel, Cédric Bosteels, Levi Hoste, Eric Hoste, Fré Bauters, Jozefien De Clercq, Catherine Heijmans, Hans Slabbynck, Leslie Naesens, Benoit Florkin, Mary-Anne Young, Amanda Willis, Paloma Lapuente-Suanzes, Ana de Andrés-Martín, Matilda Berkell, Valerio Carelli, Alessia Fiorentino, Surbhi Malhotra, Alessandro Mattiaccio, Tommaso Pippucci, Marco Seri, Evelina Tacconelli, Michiel van Agtmael, Anne Geke Algera, Brent Appelman, Frank van Baarle, Diane Bax, Martijn Beudel, Harm Jan Bogaard, Marije Bomers, Peter Bonta, Lieuwe Bos, Michela Botta, Justin de Brabander, Godelieve de Bree, Sanne de Bruin, David T.P. Buis, Marianna Bugiani, Esther Bulle, Osoul Chouchane, Alex Cloherty, Mirjam Dijkstra, Dave A. Dongelmans, Romein W.G. Dujardin, Paul Elbers, Lucas Fleuren, Suzanne Geerlings, Theo Geijtenbeek, Armand Girbes, Bram Goorhuis, Martin P. Grobusch, Florianne Hafkamp, Laura Hagens, Jorg Hamann, Vanessa Harris, Robert Hemke, Sabine M. Hermans, Leo Heunks, Markus Hollmann, Janneke Horn, Joppe W. Hovius, Menno D. de Jong, Rutger Koning, Endry H.T. Lim, Niels van Mourik, Jeaninne Nellen, Esther J. Nossent, Frederique Paulus, Edgar Peters, Dan A.I. Pina-Fuentes, Tom van der Poll, Bennedikt Preckel, Jan M. Prins, Jorinde Raasveld, Tom Reijnders, Maurits C.F. J. de Rotte, Michiel Schinkel, Marcus J. Schultz, Femke A.P. Schrauwen, Alex Schuurmans, Jaap Schuurmans, Kim Sigaloff, Marleen A. Slim, Patrick Smeele, Marry Smit, Cornelis S. Stijnis, Willemke Stilma, Charlotte Teunissen, Patrick Thoral, Anissa M. Tsonas, Pieter R. Tuinman, Marc van der Valk, Denise P. Veelo, Carolien Volleman, Heder de Vries, Lonneke A. Vught, Michèle van Vugt, Dorien Wouters, A.H. Zwinderman, Matthijs C. Brouwer, W. Joost Wiersinga, Alexander P.J. Vlaar, Miranda F. Tompkins, Camille Alba, Daniel N. Hupalo, John Rosenberger, Gauthaman Sukumar, Matthew D. Wilkerson, Xijun Zhang, Justin Lack, Andrew J. Oler, Kerry Dobbs, Ottavia M. Delmonte, Jeffrey J. Danielson, Andrea Biondi, Laura Rachele Bettini, Mariella D’Angiò, Ilaria Beretta, Luisa Imberti, Alessandra Sottini, Virginia Quaresima, Eugenia Quiros-Roldan, Camillo Rossi, Riccardo Castagnoli, Daniela Montagna, Amelia Licari, and Gian Luigi Marseglia
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HLA ,association ,asymptomatic infection ,COVID-19 ,population stratification ,Genetics ,QH426-470 - Abstract
Summary: Human genetic studies of critical COVID-19 pneumonia have revealed the essential role of type I interferon-dependent innate immunity to SARS-CoV-2 infection. Conversely, an association between the HLA-B∗15:01 allele and asymptomatic SARS-CoV-2 infection in unvaccinated individuals was recently reported, suggesting a contribution of pre-existing T cell-dependent adaptive immunity. We report a lack of association of classical HLA alleles, including HLA-B∗15:01, with pre-omicron asymptomatic SARS-CoV-2 infection in unvaccinated participants in a prospective population-based study in the United States (191 asymptomatic vs. 945 symptomatic COVID-19 cases). Moreover, we found no such association in the international COVID Human Genetic Effort cohort (206 asymptomatic vs. 574 mild or moderate COVID-19 cases and 1,625 severe or critical COVID-19 cases). Finally, in the Human Challenge Characterisation study, the three HLA-B∗15:01 individuals infected with SARS-CoV-2 developed symptoms. As with other acute primary infections studied, no classical HLA alleles favoring an asymptomatic course of SARS-CoV-2 infection were identified.
- Published
- 2024
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13. Biallelic PI4KA variants cause a novel neurodevelopmental syndrome with hypomyelinating leukodystrophy
- Author
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Agatha Schlüter, Cyril Goizet, Miquel Raspall-Chaure, Almudena Chacón, Mehdi Benkirane, Lisa Pavinato, Agustí Rodríguez-Palmero, Isabelle Rouvet, Irene de la Calle, Francesco Saettini, Carlos Casasnovas, Michel Koenig, Vincent Michaud, Júlia Sala-Coromina, Melanie O’Leary, Emily O'Heir, Aurora Pujol, Alfons Macaya, Chiara Fossati, Precilla de Souza, Alfredo Brusco, David R. Adams, Heather C Mefford, Luis González Gutiérrez-Solana, Valentina Vélez-Santamaría, Maria Iascone, Estibaliz Barredo, Agathe Roubertie, Francesco Canonico, Anna Marcé-Grau, Giorgia Mandrile, Edgard Verdura, Heidi L. Rehm, Montserrat Ruiz, Laura Planas-Serra, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Català de la Salut, [Verdura E, Planas-Serra L] Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, 08908, Barcelona, Catalonia, Spain. Centre for Biomedical Research in Network on Rare Diseases (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain. [Rodríguez-Palmero A] Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, 08908, Barcelona, Catalonia, Spain. Pediatric Neurology Unit, Department of Pediatrics, Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona, Catalonia, Spain. [Vélez-Santamaria V] Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, 08908, Barcelona, Catalonia, Spain. Neuromuscular Unit, Neurology Department, Hospital Universitari de Bellvitge, Universitat de Barcelona, L’Hospitalet de Llobregat, Barcelona, Spain. [de la Calle I] Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, 08908, Barcelona, Catalonia, Spain. [Raspall-Chaure M] Grup de Recerca en Neurologia, Vall d’Hebron Institut de Recerca (VHIR), Barcelona, Spain. Universitat Autònoma de Barcelona, Bellaterra, Spain. Servei de Neurologia Pediàtrica, Vall d’Hebron Hospital Universitari, Barcelona, Spain, and Vall d'Hebron Barcelona Hospital Campus
- Subjects
Male ,Mielina - Malalties - Aspectes genètics ,[SDV]Life Sciences [q-bio] ,medicine.disease_cause ,0302 clinical medicine ,Malalties hereditàries ,PI4KA ,hypomyelinating leukodystrophy ,inborn errors of metabolism ,phosphoinositol ,spastic paraplegia ,Child ,Exome ,0303 health sciences ,Mutation ,Pediatria ,medicine.diagnostic_test ,AcademicSubjects/SCI01870 ,Otros calificadores::Otros calificadores::/genética [Otros calificadores] ,Malalties del sistema nerviós central ,Metabolic disorder ,Human brain ,Phenotype ,Pedigree ,Blot ,Phosphotransferases (Alcohol Group Acceptor) ,medicine.anatomical_structure ,Child, Preschool ,Female ,enfermedades del sistema nervioso::enfermedades del sistema nervioso central::enfermedades cerebrales::enfermedades cerebrales metabólicas::enfermedades cerebrales metabólicas congénitas::enfermedades desmielinizantes hereditarias del sistema nervioso central [ENFERMEDADES] ,Genetic disorders ,Central nervous system diseases ,Adult ,Adolescent ,Health Occupations::Medicine::Pediatrics [DISCIPLINES AND OCCUPATIONS] ,Biology ,Immunofluorescence ,Minor Histocompatibility Antigens ,03 medical and health sciences ,Other subheadings::Other subheadings::/genetics [Other subheadings] ,medicine ,Humans ,profesiones sanitarias::medicina::pediatría [DISCIPLINAS Y OCUPACIONES] ,Alleles ,030304 developmental biology ,trastornos mentales::trastornos del desarrollo neurológico [PSIQUIATRÍA Y PSICOLOGÍA] ,Leukodystrophy ,Infant, Newborn ,Genetic Variation ,Infant ,Original Articles ,Nervous System Diseases::Central Nervous System Diseases::Brain Diseases::Brain Diseases, Metabolic::Brain Diseases, Metabolic, Inborn::Hereditary Central Nervous System Demyelinating Diseases [DISEASES] ,medicine.disease ,Sistema nerviós - Malalties - Aspectes genètics ,Hereditary Central Nervous System Demyelinating Diseases ,Neurodevelopmental Disorders ,Leukocytes, Mononuclear ,Cancer research ,AcademicSubjects/MED00310 ,Neurology (clinical) ,030217 neurology & neurosurgery ,Mental Disorders::Neurodevelopmental Disorders [PSYCHIATRY AND PSYCHOLOGY] - Abstract
Phosphoinositides are lipids that play a critical role in processes such as cellular signalling, ion channel activity and membrane trafficking. When mutated, several genes that encode proteins that participate in the metabolism of these lipids give rise to neurological or developmental phenotypes. PI4KA is a phosphoinositide kinase that is highly expressed in the brain and is essential for life. Here we used whole exome or genome sequencing to identify 10 unrelated patients harbouring biallelic variants in PI4KA that caused a spectrum of conditions ranging from severe global neurodevelopmental delay with hypomyelination and developmental brain abnormalities to pure spastic paraplegia. Some patients presented immunological deficits or genito-urinary abnormalities. Functional analyses by western blotting and immunofluorescence showed decreased PI4KA levels in the patients’ fibroblasts. Immunofluorescence and targeted lipidomics indicated that PI4KA activity was diminished in fibroblasts and peripheral blood mononuclear cells. In conclusion, we report a novel severe metabolic disorder caused by PI4KA malfunction, highlighting the importance of phosphoinositide signalling in human brain development and the myelin sheath., Verdura et al. report a novel rare brain metabolic disorder caused by recessive mutations in PI4KA, which encodes an enzyme with a pivotal role in phosphoinositide metabolism at the cell membrane. The description of this syndrome will simplify the identification of undiagnosed cases with similar clinical features.
- Published
- 2021
14. Epigenome-wide association study of COVID-19 severity with respiratory failure
- Author
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Maria J. Arranz, David Dalmau, Sergiu Albu, Jesús Troya, Aurora Pujol, Valentina Vélez-Santamaría, Roger Colobran, Francesc Vidal, Anna M. Planas, Jair Tenorio, Laia Llucià-Carol, Carles Arribas, Juan Valencia-Ramos, Sergio Aguilera-Albesa, Damiana Álvarez-Errico, Agustí Rodríguez-Palmero, Andrea Martín-Nalda, Jordi Pérez-Tur, Israel Fernandez-Cadenas, Paula Villares, Manuel Castro de Moura, Carlos Casasnovas, Pere Soler-Palacín, Anna Rull, Juan Pablo Horcajada, Laia Reverté, Beatriz Dietl, Judit Villar-García, Manel Esteller, Montserrat Ruiz, Veronica Davalos, Laura Planas-Serra, Josep Carreras Leukemia Foundation, Fundació Privada Cellex, Generalitat de Catalunya, Institut Català de la Salut, [Castro de Moura M, Davalos V, Alvarez-Errico D, Arribas C] Josep Carreras Leukaemia Research Institute (IJC), 08916 Badalona, Barcelona, Catalonia, Spain. [Planas-Serra L, Ruiz M] Neurometabolic Diseases Laboratory, Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain. [Colobran R] Servei d’Immunologia, Servei de Genètica, Vall d'Hebron Hospital Universitari, Barcelona, Spain. Vall d'Hebron Institut de Recerca (VHIR), Barcelona, Spain. [Martin-Nalda A, Soler-Palacin P] Unitat de Patologia Infecciosa i Immunodeficiències de Pediatria, Vall d'Hebron Hospital Universitari, Barcelona, Spain, and Vall d'Hebron Barcelona Hospital Campus
- Subjects
0301 basic medicine ,enfermedades respiratorias::trastornos respiratorios::insuficiencia respiratoria [ENFERMEDADES] ,Male ,Medicine (General) ,Genome-wide association study ,Disease ,medicine.disease_cause ,COVID-19 (Malaltia) ,Severity of Illness Index ,Cohort Studies ,Epigenome ,0302 clinical medicine ,Insuficiència respiratòria - Aspectes genètics ,virosis::infecciones por virus ARN::infecciones por Nidovirales::infecciones por Coronaviridae::infecciones por Coronavirus [ENFERMEDADES] ,Medicine ,Coronavirus ,DNA methylation ,Virus Diseases::RNA Virus Infections::Nidovirales Infections::Coronaviridae Infections::Coronavirus Infections [DISEASES] ,General Medicine ,Methylation ,Middle Aged ,Respiratory Tract Diseases::Respiration Disorders::Respiratory Insufficiency [DISEASES] ,CpG site ,030220 oncology & carcinogenesis ,Female ,Epigenetics ,Respiratory Insufficiency ,Respiratory insufficiency ,Research Paper ,Adult ,Investigative Techniques::Epidemiologic Methods::Epidemiologic Research Design::Genome-Wide Association Study [ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT] ,Other subheadings::Other subheadings::Other subheadings::/virology [Other subheadings] ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,Young Adult ,R5-920 ,Humans ,Otros calificadores::Otros calificadores::Otros calificadores::/virología [Otros calificadores] ,business.industry ,SARS-CoV-2 ,Reproducibility of Results ,COVID-19 ,Epigenètica ,Genòmica ,030104 developmental biology ,Insuficiència respiratòria ,Spain ,Immunology ,técnicas de investigación::métodos epidemiológicos::diseño de la investigación epidemiológica::estudio de asociación genómica completa [TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS] ,CpG Islands ,Interferons ,business ,Genome-Wide Association Study - Abstract
Background: Patients infected with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), responsible for the coronavirus disease 2019 (COVID-19), exhibit a wide spectrum of disease behaviour. Since DNA methylation has been implicated in the regulation of viral infections and the immune system, we performed an epigenome-wide association study (EWAS) to identify candidate loci regulated by this epigenetic mark that could be involved in the onset of COVID-19 in patients without comorbidities. Methods: Peripheral blood samples were obtained from 407 confirmed COVID-19 patients 61 years of age and without comorbidities, 194 (47.7%) of whom had mild symptomatology that did not involve hospitalization and 213 (52.3%) had a severe clinical course that required respiratory support. The set of cases was divided into discovery (n = 207) and validation (n = 200) cohorts, balanced for age and sex of individuals. We analysed the DNA methylation status of 850,000 CpG sites in these patients. Findings: The DNA methylation status of 44 CpG sites was associated with the clinical severity of COVID-19. Of these loci, 23 (52.3%) were located in 20 annotated coding genes. These genes, such as the inflammasome component Absent in Melanoma 2 (AIM2) and the Major Histocompatibility Complex, class I C (HLA-C) candidates, were mainly involved in the response of interferon to viral infection. We used the EWAS-identified sites to establish a DNA methylation signature (EPICOVID) that is associated with the severity of the disease. Interpretation: We identified DNA methylation sites as epigenetic susceptibility loci for respiratory failure in COVID-19 patients. These candidate biomarkers, combined with other clinical, cellular and genetic factors, could be useful in the clinical stratification and management of patients infected with the SARS-CoV-2., The Unstoppable campaign of the Josep Carreras Leukaemia Foundation, the Cellex Foundation and the CERCA Programme/Generalitat de Catalunya.
- Published
- 2021
15. Novel intragenic deletion within the FXN gene in a patient with typical phenotype of Friedreich ataxia: may be more prevalent than we think?
- Author
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Cinthia Aguilera, Anna Esteve-Garcia, Carlos Casasnovas, Valentina Vélez-Santamaria, Laura Rausell, Pablo Gargallo, Javier Garcia-Planells, Pedro Alía, Núria Llecha, and Ariadna Padró-Miquel
- Subjects
Friedreich ataxia (FRDA) ,FXN ,Deletion ,Biallelic expansion ,Parental testing ,Internal medicine ,RC31-1245 ,Genetics ,QH426-470 - Abstract
Abstract Background Friedreich ataxia is the most common inherited ataxia in Europe and is mainly caused by biallelic pathogenic expansions of the GAA trinucleotide repeat in intron 1 of the FXN gene that lead to a decrease in frataxin protein levels. Rarely, affected individuals carry either a large intragenic deletion or whole-gene deletion of FXN on one allele and a full-penetrance expanded GAA repeat on the other allele. Case presentation We report here a patient that presented the typical clinical features of FRDA and genetic analysis of FXN intron 1 led to the assumption that the patient carried the common biallelic expansion. Subsequently, parental sample testing led to the identification of a novel intragenic deletion involving the 5’UTR upstream region and exons 1 and 2 of the FXN gene by MLPA. Conclusions With this case, we want to raise awareness about the potentially higher prevalence of intragenic deletions and underline the essential role of parental sample testing in providing accurate genetic counselling.
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- 2023
- Full Text
- View/download PDF
16. Expanding the clinical and genetic spectrum of PCYT2-related disorders
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Carlos Casasnovas, Agatha Schlüter, Aurora Pujol, Reza Maroofian, Yue Si, Edgard Verdura, Juan José Martínez, Stephanie S Thompson, Laura Planas-Serra, Colleen F. Macmurdo, Valentina Vélez-Santamaría, and Josefina Casas
- Subjects
0301 basic medicine ,Government ,complex hereditary spastic paraplegia (cHSP) ,Spastic Paraplegia, Hereditary ,European Regional Development Fund ,Library science ,RNA Nucleotidyltransferases ,European Social Fund ,PCYT2-related disorders ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Political science ,Mutation ,Humans ,Christian ministry ,Neurology (clinical) ,030217 neurology & neurosurgery - Abstract
Recently, Vaz et al. reported four families with complex hereditary spastic paraplegia (cHSP) and biallelic variants in PCYT2 encoding CTP: phosphoethanolamine cytidylyltransferase (ET), the rate-limiting enzyme for phosphatidylethanolamine biosynthesis. Patient-derived fibroblasts and plasma had significant abnormalities in both neutral etherlipid and etherphospholipid metabolism (Vaz et al., 2019). We wish to broaden the phenotypic and genetic spectrum of PCYT2-related disorders with two additional patients. Clinical features are detailed in Table 1., This study was supported by the Centre for Biomedical Research on Rare Diseases (CIBERER) [ACCI19-759], the URDCat program (PERIS SLT002/16/00174), the Hesperia Foundation and the Secretariat for Universities and Research of the Ministry of Business and Knowledge of the Government of Catalonia [2017SGR1206] to A.P., and Instituto de Salud Carlos III [PI14/00581] (Co-funded by European Regional Development Fund. V.V., E.V. and L.P.S. were funded by grants from Instituto de Salud Carlos III, co-funded by European Social Fund. ESF investing in your future (Rio Hortega, CM18/00145; Sara Borrell, CD19/00221; PFIS, FI18/00141)
- Published
- 2020
17. Intravenous immunoglobulins may prevent prednisone-exacerbation in myasthenia gravis
- Author
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Christian Homedes, Laura Díez-Porras, Valentina Vélez-Santamaría, Maria Antonia Alberti, and Carlos Casasnovas
- Subjects
0301 basic medicine ,Adult ,Male ,Malalties neuromusculars ,Exacerbation ,Science ,Neuroimmunology ,Immunoglobulins ,Article ,03 medical and health sciences ,0302 clinical medicine ,Prednisone ,hemic and lymphatic diseases ,Myasthenia Gravis ,medicine ,Adjuvant therapy ,Humans ,In patient ,Adverse effect ,Aged ,Aged, 80 and over ,Multidisciplinary ,business.industry ,Adrenocortical hormones ,Immunoglobulins, Intravenous ,Neuromuscular disease ,Middle Aged ,Corticosteroides ,medicine.disease ,Myasthenia gravis ,Rare diseases ,Clinical trial ,Neuromuscular diseases ,030104 developmental biology ,Intravenous Immunoglobulins ,Anesthesia ,Medicine ,Female ,Malalties rares ,Immunoglobulines ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Corticosteroids may produce a paradoxical worsening of myasthenia gravis (MG) symptoms within the first weeks of treatment. We therefore wanted to assess the hypothesis that a prior infusion of intravenous immunoglobulin (IVIG) may have a protective effect. Our primary objectives were to show that the coadministration of immunoglobulins and glucocorticoids is safe and effective for controlling myasthenic symptoms, and to compare the exacerbation rate with this approach and historical practice without IVIG. We recruited 45 patients with generalized MG who required corticosteroids for the first time and we gave all IVIG before starting the full doses of prednisone. Monitoring was performed with validated scales, questionnaires, and blood tests over a 6-week period. Only 4.4% had severe adverse effects related to IVIG and 86.7% improved clinically. Notably, only 2.2% had a paradoxical symptom exacerbation in the first weeks of starting prednisone, which was statistically lower than the 42% reported in a historical series. We conclude that adjuvant therapy with IVIG when starting prednisone for the first time in patients with generalized MG is safe and effective. Given that the rate of paradoxical worsening was lower than that previously reported, the addition of IVIG may have a protective effect against such exacerbations.
- Published
- 2020
18. Eculizumab as a promising treatment in thymoma-associated myasthenia gravis
- Author
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Laura Díez, Carlos Casasnovas, M. Antonia Alberti, Valentina Vélez-Santamaría, Velina Nedkova, and Christian Homedes
- Subjects
0301 basic medicine ,medicine.medical_specialty ,Malalties neuromusculars ,Thymoma ,medicine.drug_class ,Autoimmune diseases ,Monoclonal antibody ,Gastroenterology ,lcsh:RC346-429 ,Neuromuscular junction ,03 medical and health sciences ,Complement inhibitor ,0302 clinical medicine ,Refractory ,immune system diseases ,Internal medicine ,Medicine ,case report ,lcsh:Neurology. Diseases of the nervous system ,Pharmacology ,myasthenia gravis ,biology ,Malalties autoimmunitàries ,business.industry ,complement inhibitor ,Eculizumab ,thymoma ,medicine.disease ,Myasthenia gravis ,nervous system diseases ,refractory ,Neuromuscular diseases ,030104 developmental biology ,medicine.anatomical_structure ,Neurology ,biology.protein ,eculizumab ,Neurology (clinical) ,Antibody ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Myasthenia gravis is a chronic autoimmune disorder caused by antibodies directed against the neuromuscular junction. Some patients may have an associated thymoma, which confers a worse prognosis. Eculizumab, a monoclonal antibody that inhibits the activation of terminal complement, has recently been approved for the treatment of refractory generalized myasthenia gravis. This is an early case report of thymoma-associated refractory myasthenia gravis successfully treated with eculizumab in a real-world setting.
- Published
- 2020
19. Myasthenia gravis exacerbation after melatonin administration: case series from a tertiary referral centre
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Valentina Vélez-Santamaría, Carlos Casasnovas, and Velina Nedkova-Hristova
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Adult ,Male ,medicine.medical_specialty ,Malalties neuromusculars ,Neurology ,Exacerbation ,medicine.drug_class ,lcsh:RC346-429 ,Melatonin ,Tertiary Care Centers ,Melatonina ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Adrenal Cortex Hormones ,Internal medicine ,Case report ,Myasthenia Gravis ,Medicine ,Corticosteroid ,Humans ,Neurochemistry ,030212 general & internal medicine ,lcsh:Neurology. Diseases of the nervous system ,Immunosuppressant ,Autoimmune disease ,Aged, 80 and over ,business.industry ,Adrenocortical hormones ,Immunoglobulins, Intravenous ,General Medicine ,Middle Aged ,medicine.disease ,Corticosteroides ,Myasthenia gravis ,Neuromuscular diseases ,Female ,Neurology (clinical) ,business ,030217 neurology & neurosurgery ,hormones, hormone substitutes, and hormone antagonists ,medicine.drug - Abstract
Background Myasthenia gravis is an autoimmune disease mediated by antibodies against proteins associated with the postsynaptic membrane of the neuromuscular junction. Several drugs may trigger an exacerbation of the disease. Melatonin supplements are widely used for the treatment of insomnia as they are well tolerated with few side effects. The role of melatonin in the immune system and its effects in autoimmune disorders remain uncertain. Case presentation We identified three patients in our referral centre from 2014 to 2019 who presented a worsening within days or weeks of starting melatonin. Two of them stopped the treatment without clinical improvement in the next week. Increasing dose of corticosteroids did not lead to clinical improvement in the next month and one of the patients was finally administered intravenous immunoglobulins. Conclusion Melatonin may trigger exacerbations of myasthenia gravis, probably due to an upregulation of the adaptive immune system and an interaction with the corticosteroids and other immunosuppressant treatments. We consider that melatonin should be administered with caution in these patients.
- Published
- 2020
20. Correction to: Eculizumab improves fatigue in refractory generalized myasthenia gravis
- Author
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Stanislav Vohanka, László Vécsei, Valentina Vélez Santamaría, Diego Lopergolo, Emanuela Onesti, Philip Van Damme, Raffaele Iorio, Laurie Gutmann, Valentina Damato, Ezgi YILMAZ, Silvia Bonanno, Carlo Antozzi, Andrea Swenson, Angela Campanella, Renato Mantegazza, Jaya Trivedi, Rhonda Snook, Mireya Fernandez-Fournier Fernandez, James Howard, Josep Gamez, Jeffrey Statland, Stephanie Kohlrus, Maurizio Inghilleri, Giovanni ANTONINI, Hakan Cavus, and Anneke Van der Kooi
- Subjects
Pediatrics ,medicine.medical_specialty ,business.industry ,Public Health, Environmental and Occupational Health ,MEDLINE ,Internet portal ,Eculizumab ,Refractory ,Jing wang ,Medicine ,business ,Generalized myasthenia ,Quality of Life Research ,medicine.drug - Abstract
The article "Eculizumab improves fatigue in refractory generalized myasthenia gravis", written by "Henning Andersen, Renato Mantegazza, Jing Jing Wang, Fanny O'Brien, Kaushik Patra, James F. Howard Jr. and The REGAIN Study Group" was originally published electronically on the publisher's internet portal (currently SpringerLink) on 23 March 2019 without open access.
- Published
- 2019
21. Epigenome-wide association study of COVID-19 severity with respiratory failure
- Author
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Manuel Castro de Moura, Veronica Davalos, Laura Planas-Serra, Damiana Alvarez-Errico, Carles Arribas, Montserrat Ruiz, Sergio Aguilera-Albesa, Jesús Troya, Juan Valencia-Ramos, Valentina Vélez-Santamaria, Agustí Rodríguez-Palmero, Judit Villar-Garcia, Juan P. Horcajada, Sergiu Albu, Carlos Casasnovas, Anna Rull, Laia Reverte, Beatriz Dietl, David Dalmau, Maria J. Arranz, Laia Llucià-Carol, Anna M. Planas, Jordi Pérez-Tur, Israel Fernandez-Cadenas, Paula Villares, Jair Tenorio, Roger Colobran, Andrea Martin-Nalda, Pere Soler-Palacin, Francesc Vidal, Aurora Pujol, and Manel Esteller
- Subjects
Coronavirus ,SARS-CoV-2 ,COVID-19 ,Epigenetics ,DNA methylation ,Medicine ,Medicine (General) ,R5-920 - Abstract
Background: Patients infected with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), responsible for the coronavirus disease 2019 (COVID-19), exhibit a wide spectrum of disease behaviour. Since DNA methylation has been implicated in the regulation of viral infections and the immune system, we performed an epigenome-wide association study (EWAS) to identify candidate loci regulated by this epigenetic mark that could be involved in the onset of COVID-19 in patients without comorbidities. Methods: Peripheral blood samples were obtained from 407 confirmed COVID-19 patients ≤ 61 years of age and without comorbidities, 194 (47.7%) of whom had mild symptomatology that did not involve hospitalization and 213 (52.3%) had a severe clinical course that required respiratory support. The set of cases was divided into discovery (n = 207) and validation (n = 200) cohorts, balanced for age and sex of individuals. We analysed the DNA methylation status of 850,000 CpG sites in these patients. Findings: The DNA methylation status of 44 CpG sites was associated with the clinical severity of COVID-19. Of these loci, 23 (52.3%) were located in 20 annotated coding genes. These genes, such as the inflammasome component Absent in Melanoma 2 (AIM2) and the Major Histocompatibility Complex, class I C (HLA-C) candidates, were mainly involved in the response of interferon to viral infection. We used the EWAS-identified sites to establish a DNA methylation signature (EPICOVID) that is associated with the severity of the disease. Interpretation: We identified DNA methylation sites as epigenetic susceptibility loci for respiratory failure in COVID-19 patients. These candidate biomarkers, combined with other clinical, cellular and genetic factors, could be useful in the clinical stratification and management of patients infected with the SARS-CoV-2. Funding: The Unstoppable campaign of the Josep Carreras Leukaemia Foundation, the Cellex Foundation and the CERCA Programme/Generalitat de Catalunya.
- Published
- 2021
- Full Text
- View/download PDF
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