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1. Corrigendum: The new Italian registry of infantile thrombosis (RITI): a reflection on its journey, challenges and pitfalls

Author

Maria Federica Pelizza, Matteo Martinato, Anna Rosati, Margherita Nosadini, Paola Saracco, Paola Giordano, Matteo Luciani, Laura Ilardi, Donatella Lasagni, Angelo Claudio Molinari, Rossana Bagna, Antonella Palmieri, Luca Antonio Ramenghi, Massimo Grassi, Mariella Magarotto, Federica Magnetti, Andrea Francavilla, Giuseppe Indolfi, Agnese Suppiej, Chiara Gentilomo, Roberta Restelli, Antonella Tufano, Daniela Tormene, Jacopo Norberto Pin, Clarissa Tona, Davide Meneghesso, Lidia Rota, Marta Conti, Giovanna Russo, Giulia Lorenzoni, Dario Gregori, Stefano Sartori, Paolo Simioni, Collaborators of the R.I.T.I. (Italian and Registry of Infantile Thrombosis), Accorsi Patrizia, Aceto Gabriella, Agnoletti Gabriella, Agostini Manuela, Alfarano Angela, Altieri Elena, Amador Carolina, Antonelli Camilla, Arena Vittoria, Asta Francesca, Baggio Laura, Ballardini Elisa, Baracetti Margherita, Baraldi Eugenio, Barberis Laura, Barisone Elena, Basso Anne Letizia, Battajon Nadia, Bersani Iliana, Biddeci Giada, Biffanti Roberta, Bonardi Claudia Maria, Bonaudo Roberto, Boniver Clementina, Boscarol Gianluca, Bottino Roberto, Bravar Giulia, Brizzi Ilaria, Brolatti Noemi, Braguglia Annabella, Guaragni Brunetta, Bugin Samuela, Calvo Pier Luigi, Capasso Antonella, Capodiferro Donatella, Cappelleri Alessia, Cascarano Maria Teresa, Casellato Susanna, Casini Tommaso, Catarzi Serena, Cavaliere Elena, Cavicchiolo Maria Elena, Celestino Silvia, Celle Maria Elena, Centonze Nicola, Cerutti Alessia, Chakrokh Roksana, Offer Chiara, Chiodin Elisabetta, Chirico Gaetano, Chukhlantseva Natalia, Cifarelli Paola, Cinelli Giulia, Coinu Marisa, Colonna Clara, Comito Donatella, Corato Alessandra, Cordelli Duccio Maria, Crichiutti Giovanni, Cursio Ida, Dagri Arianna, De Maria Beatrice, Del Borrello Giovanni, Di Rienzo Francesca, Doglioni Nicoletta, Dolcemascolo Valentina, Dotta Andrea, Drigo Paola, Drimaco Pietro, Ellero Serena, Falcone Alessandra, Fantauzzi Ambra, Farinasso Daniela, Ferilli Michela, Festa Silvia, Fischer Maximilian, Foiadelli Thomas, Fotzi Ilaria, Francavilla Rosa, Freschi Paola, Gaffuri Marcella, Gallo Elena, Gamalero Lisa, Gandioli Claudia, Garuccio Sergio, Gentile Diletta, Ghionzoli Marco, Giliberti Paola, Greco Filippo, Guariento Chiara, Guidotti Isotta, Iodice Alessandro, Janes Augusta, Laghi Elena, Lampugnani Elisabetta, Lassandro Giuseppe, Laverda Anna Maria, Lazzerotti Alessandra, Lo Tartaro Meragliotta Patrizia, Lombardini Martina, Lorenzon Eleonora, Mainini Nicoletta, Massoud Michela, Materia Valeria, Mattera Raffaele, Mauro Isabella, Melani Federico, Meli Mariaclaudia, Messina Giovanni, Monticone Sonia, Moras Marzia, Negro Ilaria, Olzai Giorgio, Pancani Simone, Pandolfi Maria, Passariello Annalisa, Passarini Alice, Passone Eva, Pastorino Myriam, Pegoraro Veronica, Pennoni Serena, Perilongo Giorgio, Pozzessere Anna, Pruna Dario, Pusiol Anna, Putti Maria Caterina, Rabbone Ivana, Radicioni Maurizio, Renna Salvatore, Ricci Maria Luisa, Rimini Alessandro, Rivellini Sara, Rustioni Gianluca, Salvadori Sabrina, Santoiemma Valentina, Santoro Nicola, Schiavulli Michele, Sebellin Sofia, Sesta Michela, Soffiati Massimo, Sorbo Monica, Spanedda Giuseppina, Stangalini Valeria, Stasolla Salvatore, Tanzi Giorgia, Testa Tiziana, Teutonico Federica, Timpani Giuseppina, Toldo Irene, Trapani Sandra, Vaccari Roberto, Vecchi Marilena, Vento Giovanni, Veraldi Daniele, Villa Giovanna, Visintin Gianluca, Zambelloni Cesare, and Zellini Francesco

Subjects
thrombosis, stroke, children, pediatric, registry, thromboembolism, Pediatrics, RJ1-570
Published
2024
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2. The new Italian registry of infantile thrombosis (RITI): A reflection on its journey, challenges and pitfalls

Author

Maria Federica Pelizza, Matteo Martinato, Anna Rosati, Margherita Nosadini, Paola Saracco, Paola Giordano, Matteo Luciani, Laura Ilardi, Donatella Lasagni, Angelo Claudio Molinari, Rossana Bagna, Antonella Palmieri, Luca Antonio Ramenghi, Massimo Grassi, Mariella Magarotto, Federica Magnetti, Andrea Francavilla, Giuseppe Indolfi, Agnese Suppiej, Chiara Gentilomo, Roberta Restelli, Antonella Tufano, Daniela Tormene, Jacopo Norberto Pin, Clarissa Tona, Davide Meneghesso, Lidia Rota, Marta Conti, Giovanna Russo, Giulia Lorenzoni, Dario Gregori, Stefano Sartori, Paolo Simioni, Collaborators of the R.I.T.I. (Italian Registry of Infantile Thrombosis), Accorsi Patrizia, Aceto Gabriella, Agnoletti Gabriella, Agostini Manuela, Alfarano Angela, Altieri Elena, Amador Carolina, Antonelli Camilla, Arena Vittoria, Asta Francesca, Baggio Laura, Ballardini Elisa, Baracetti Margherita, Baraldi Eugenio, Barberis Laura, Barisone Elena, Basso Anne Letizia, Battajon Nadia, Bersani Iliana, Biddeci Giada, Biffanti Roberta, Bonardi Claudia Maria, Bonaudo Roberto, Boniver Clementina, Boscarol Gianluca, Bottino Roberto, Bravar Giulia, Brizzi Ilaria, Brolatti Noemi, Braguglia Annabella, Guaragni Brunetta, Bugin Samuela, Calvo Pier Luigi, Capasso Antonella, Capodiferro Donatella, Cappelleri Alessia, Cascarano Maria Teresa, Casellato Susanna, Casini Tommaso, Catarzi Serena, Cavaliere Elena, Cavicchiolo Maria Elena, Celestino Silvia, Celle Maria Elena, Centonze Nicola, Cerutti Alessia, Chakrokh Roksana, Offer Chiara, Chiodin Elisabetta, Chirico Gaetano, Chukhlantseva Natalia, Cifarelli Paola, Cinelli Giulia, Coinu Marisa, Colonna Clara, Comito Donatella, Corato Alessandra, Cordelli Duccio Maria, Crichiutti Giovanni, Cursio Ida, Dagri Arianna, De Maria Beatrice, Del Borrello Giovanni, Di Rienzo Francesca, Doglioni Nicoletta, Dolcemascolo Valentina, Dotta Andrea, Drigo Paola, Drimaco Pietro, Ellero Serena, Falcone Alessandra, Fantauzzi Ambra, Farinasso Daniela, Ferilli Michela, Festa Silvia, Fischer Maximilian, Foiadelli Thomas, Fotzi Ilaria, Francavilla Rosa, Freschi Paola, Gaffuri Marcella, Gallo Elena, Gamalero Lisa, Gandioli Claudia, Garuccio Sergio, Gentile Diletta, Ghionzoli Marco, Giliberti Paola, Greco Filippo, Guariento Chiara, Guidotti Isotta, Iodice Alessandro, Janes Augusta, Laghi Elena, Lampugnani Elisabetta, Lassandro Giuseppe, Laverda Anna Maria, Lazzerotti Alessandra, Lo Tartaro Meragliotta Patrizia, Lombardini Martina, Lorenzon Eleonora, Mainini Nicoletta, Massoud Michela, Materia Valeria, Mattera Raffaele, Mauro Isabella, Melani Federico, Meli Mariaclaudia, Messina Giovanni, Monticone Sonia, Moras Marzia, Negro Ilaria, Olzai Giorgio, Pancani Simone, Pandolfi Maria, Passariello Annalisa, Passarini Alice, Passone Eva, Pastorino Myriam, Pegoraro Veronica, Pennoni Serena, Perilongo Giorgio, Pozzessere Anna, Pruna Dario, Pusiol Anna, Putti Maria Caterina, Rabbone Ivana, Radicioni Maurizio, Renna Salvatore, Ricci Maria Luisa, Rimini Alessandro, Rivellini Sara, Rustioni Gianluca, Salvadori Sabrina, Santoiemma Valentina, Santoro Nicola, Schiavulli Michele, Sebellin Sofia, Sesta Michela, Soffiati Massimo, Sorbo Monica, Spanedda Giuseppina, Stangalini Valeria, Stasolla Salvatore, Tanzi Giorgia, Testa Tiziana, Teutonico Federica, Timpani Giuseppina, Toldo Irene, Trapani Sandra, Vaccari Roberto, Vecchi Marilena, Vento Giovanni, Veraldi Daniele, Villa Giovanna, Visintin Gianluca, Zambelloni Cesare, and Zellini Francesco

Subjects
thrombosis, stroke, children, pediatric, registry, thromboembolism, Pediatrics, RJ1-570
Abstract

IntroductionThrombotic events in neonates and children represent a rare although severe occurrence in view of the associated risk of mortality and sequelae. Quality evidence is limited in this field, and registry studies provide an essential base for research. The aim of this paper is to present the new Italian Registry of Infantile Thrombosis (RITI), set it into the scene of international thrombosis and stroke registries, and provide some insight on the challenges associated with registry management.MethodsWe present the detailed structure and content of the new RITI registry, a brief overview of its main data, and a reflection on its features, pitfalls and the main challenges related to its management.ResultsThe RITI, initially started in 2007 and officially re-launched in 2017 after structural modifications, is a non-interventional retrospective and prospective registry study collecting data on neonatal and pediatric patients (0–18 years) who experienced a systemic or cerebral thrombotic event in Italy. The RITI is managed by a multidisciplinary team with expertise in pediatric thrombosis, and participation is open to all Italian physicians, on a voluntary basis. The overall aim of the registry is to acquire new evidence to better characterize the population of children with thrombotic events and improve their management and outcome. 48 Italian pediatric and intensive care units are actively involved in the RITI, including 85 medical doctors from 16 Italian regions. A total of 1,001 neonates and children affected by cerebral or systemic thrombosis have been enrolled.DiscussionThe RITI is one of the largest available European registries of neonatal and pediatric thrombosis. National registries like the RITI represent a model for the study of rare conditions based on multidisciplinary and multicenter collaboration, aimed at overcoming the limitations due to small populations of patients, and creating a network of experts for patient referral and continuous education. Moreover, registry studies have a pivotal role in the research on pediatric thrombosis, due to the limited feasibility of high-quality studies. In our experience, the main critical stages, pitfalls and challenges in registry management include adequate registry designing, diffusion, data completeness and quality control.

Published
2023
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3. Functional Study of Novel Bartter's Syndrome Mutations in ClC-Kb and Rescue by the Accessory Subunit Barttin Toward Personalized Medicine.

Author

Sahbani, Dalila, Strumbo, Bice, Tedeschi, Silvana, Conte, Elena, Camerino, Giulia Maria, Benetti, Elisa, Montini, Giovanni, Aceto, Gabriella, Procino, Giuseppe, Imbrici, Paola, and Liantonio, Antonella

Subjects
INDIVIDUALIZED medicine, MOLECULAR chaperones, DELETION mutation, CELL membranes, CHLORIDE channels, GENETIC mutation
Abstract

Type III and IV Bartter syndromes (BS) are rare kidney tubulopathies caused by loss-of-function mutations in the CLCNKB and BSND genes coding respectively for the ClC-Kb chloride channels and accessory subunit barttin. ClC-K channels are expressed in the Henle's loop, distal convoluted tubule, and cortical collecting ducts of the kidney and contribute to chloride absorption and urine concentration. In our Italian cohort, we identified two new mutations in CLCNKB , G167V and G289R, in children affected by BS and previously reported genetic variants, A242E, a chimeric gene and the deletion of the whole CLCNKB. All the patients had hypokalemia and metabolic alkalosis, increased serum renin and aldosterone levels and were treated with a symptomatic therapy. In order to define the molecular mechanisms responsible for BS, we co-expressed ClC-Kb wild type and channels with point mutations with barttin in HEK 293 cells and characterized chloride currents through the patch-clamp technique. In addition, we attempted to revert the functional defect caused by BS mutations through barttin overexpression. G167V and A242E channels showed a drastic current reduction compared to wild type, likely suggesting compromised expression of mutant channels at the plasma membrane. Conversely, G289R channel was similar to wild type raising the doubt that an additional mutation in another gene or other mechanisms could account for the clinical phenotype. Interestingly, increasing ClC-K/barttin ratio augmented G167V and A242E mutants' chloride current amplitudes towards wild type levels. These results confirm a genotype-phenotype correlation in BS and represent a preliminary proof of concept that molecules functioning as molecular chaperones can restore channel function in expression-defective ClC-Kb mutants. [ABSTRACT FROM AUTHOR]

Published
2020
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