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2. Diagnostic issues faced by a rare disease healthcare network during Covid-19 outbreak: data from the Campania Rare Disease Registry

Author

Limongelli G, Iucolano S, Monda E, Elefante P, De Stasio C, Lubrano I, Caiazza M, Mazzella M, Fimiani F, Galdo M, De Marchi G, Esposito M, Rubino M, Cirillo A, Fusco A, Esposito A, Trama U, Esposito S, Scarano G, Sepe J, Andria G, Orlando V, Menditto E, Chiodini P, Campania Rare Disease, Iolascon A, Franzese A, Sanduzzi Zamparelli A, Tessitore A, Romano A, Venosa A, Nunzia Olivieri A, Bianco A, La Manna A, Cerbone AM, Spasiano A, Agnese Stanziola A, Colao A, De Bellis A, Gambale A, Toriello A, Tufano A, Ciampa A, Maria Risitano A, Pisani A, Russo A, Volpe A, De Martino B, Amato B, De Fusco C, Piscopo C, Selleri C, Tucci C, Pignata C, Cioffi D, Melis D, Pasquali D, De Brasi D, Spitaleri D, Russo D, Martellotta D, De Michele E, Varricchio E, Miraglia Del Giudice E, Coscioni E, Cimino E, Pane F, Tranfa F, Pollio F, Lonardo F, Nuzzi F, Simonelli F, Trojsi F, Habetswallner F, Valentini G, Cerbone G, Parenti G, Tedeschi G, Capasso G, Battista Rossi G, Gaglione G, Sarnelli G, Argenziano G, Bellastella G, De Michele G, Fiorentino G, Spadaro G, Scala I, Santoro L, Zeppa L, Auricchio L, Elio Adinolfi L, Alessio M, Amitrano M, Savanelli MC, Russo MG, Ferrucci MG, Carbone MT, Pellecchia MT, Salerno M, Melone M, Del Donno M, Vitale M, Triggiani M, Della Monica M, Lo Presti M, Tenuta M, Mignogna MD, Schiavulli M, Zacchia M, Brunetti-Pierri N, Iovino P, Moscato P, Iandoli R, Scarpa R, Russo R, Troisi S, Sbordone S, Perrotta S, Fecarotta S, Sampaolo S, Cicalese V., Limongelli, Giuseppe, Iucolano, Stefano, Monda, Emanuele, Elefante, Pasquale, De Stasio, Chiara, Lubrano, Imma, Caiazza, Martina, Mazzella, Marialuisa, Fimiani, Fabio, Galdo, Maria, De Marchi, Giulia, Esposito, Martina, Rubino, Marta, Cirillo, Annapaola, Fusco, Adelaide, Esposito, Augusto, Trama, Ugo, Esposito, Salvatore, Scarano, Gioacchino, Sepe, Joseph, Andria, Generoso, Orlando, Valentina, Menditto, Enrica, Chiodini, Paolo, Iolascon, Achille, Franzese, Adriana, Sanduzzi Zamparelli, Alessandro, Tessitore, Alessandro, Romano, Alfonso, Venosa, Alfredo, Nunzia Olivieri, Alma, Bianco, Andrea, La Manna, Angela, Cerbone, Anna Maria, Spasiano, Anna, Agnese Stanziola, Anna, Colao, Annamaria, De Bellis, Annamaria, Gambale, Antonella, Toriello, Antonella, Tufano, Antonella, Ciampa, Antonio, Maria Risitano, Antonio, Pisani, Antonio, Russo, Antonio, Volpe, Antonio, De Martino, Bernardo, Amato, Bruno, De Fusco, Carmela, Piscopo, Carmelo, Selleri, Carmine, Tucci, Celeste, Pignata, Claudio, Cioffi, Daniela, Melis, Daniela, Pasquali, Daniela, De Brasi, Daniele, Spitaleri, Daniele, De Brasi, Davide, Russo, Domenico, Martellotta, Donata, De Michele, Elisa, Varricchio, Elziario, Miraglia Del Giudice, Emanuele, Coscioni, Enrico, Cimino, Ernesto, Pane, Fabrizio, Tranfa, Fausto, Pollio, Filiberto, Lonardo, Fortunato, Nuzzi, Francesca, Simonelli, Francesca, Trojsi, Francesca, Habetswallner, Francesco, Valentini, Gabriele, Cerbone, Gaetana, Parenti, Giancarlo, Tedeschi, Gioacchino, Capasso, Giovambattista, Battista Rossi, Giovanni, Gaglione, Giovanni, Sarnelli, Giovanni, Argenziano, Giuseppe, Bellastella, Giuseppe, De Michele, Giuseppe, Fiorentino, Giuseppe, Spadaro, Giuseppe, Scala, Iri, Santoro, Lucio, Zeppa, Lucio, Auricchio, Luigi, Elio Adinolfi, Luigi, Alessio, Maria, Amitrano, Maria, Savanelli, Maria Cristina, Russo, Maria Giovanna, Ferrucci, Maria Grazia, Carbone, Maria Teresa, Pellecchia, Maria Teresa, Salerno, Mariacarolina, Melone, Marina, Del Donno, Mario, Vitale, Mario, Triggiani, Massimo, Della Monica, Matteo, Lo Presti, Maurizio, Tenuta, Maurizio, Mignogna, Michele Davide, Schiavulli, Michele, Zacchia, Miriam, Brunetti-Pierri, Nicola, Iovino, Paola, Moscato, Paolo, Iandoli, Raffaele, Scarpa, Raffaele, Russo, Romualdo, Troisi, Salvatore, Sbordone, Sandro, Perrotta, Silverio, Fecarotta, Simona, Sampaolo, Simone, Cicalese, Virgilio, Limongelli, G, Iucolano, S, Monda, E, Elefante, P, De Stasio, C, Lubrano, I, Caiazza, M, Mazzella, M, Fimiani, F, Galdo, M, De Marchi, G, Esposito, M, Rubino, M, Cirillo, A, Fusco, A, Esposito, A, Trama, U, Esposito, S, Scarano, G, Sepe, J, Andria, G, Orlando, V, Menditto, E, Chiodini, P, Campania Rare, Disease, Iolascon, A, Franzese, A, Sanduzzi Zamparelli, A, Tessitore, A, Romano, A, Venosa, A, Nunzia Olivieri, A, Bianco, A, La Manna, A, Cerbone, Am, Spasiano, A, Agnese Stanziola, A, Colao, A, De Bellis, A, Gambale, A, Toriello, A, Tufano, A, Ciampa, A, Maria Risitano, A, Pisani, A, Russo, A, Volpe, A, De Martino, B, Amato, B, De Fusco, C, Piscopo, C, Selleri, C, Tucci, C, Pignata, C, Cioffi, D, Melis, D, Pasquali, D, De Brasi, D, Spitaleri, D, Russo, D, Martellotta, D, De Michele, E, Varricchio, E, Miraglia Del Giudice, E, Coscioni, E, Cimino, E, Pane, F, Tranfa, F, Pollio, F, Lonardo, F, Nuzzi, F, Simonelli, F, Trojsi, F, Habetswallner, F, Valentini, G, Cerbone, G, Parenti, G, Tedeschi, G, Capasso, G, Battista Rossi, G, Gaglione, G, Sarnelli, G, Argenziano, G, Bellastella, G, De Michele, G, Fiorentino, G, Spadaro, G, Scala, I, Santoro, L, Zeppa, L, Auricchio, L, Elio Adinolfi, L, Alessio, M, Amitrano, M, Savanelli, Mc, Russo, Mg, Ferrucci, Mg, Carbone, Mt, Pellecchia, Mt, Salerno, M, Melone, M, Del Donno, M, Vitale, M, Triggiani, M, Della Monica, M, Lo Presti, M, Tenuta, M, Mignogna, Md, Schiavulli, M, Zacchia, M, Brunetti-Pierri, N, Iovino, P, Moscato, P, Iandoli, R, Scarpa, R, Russo, R, Troisi, S, Sbordone, S, Perrotta, S, Fecarotta, S, Sampaolo, S, and Cicalese, V.

Subjects
Pediatrics, medicine.medical_specialty, Coronavirus disease 2019 (COVID-19), Home therapy, rare diseases, 030204 cardiovascular system & hematology, Campania region, Covid-19, Italy, patient registry, Disease Outbreaks, 03 medical and health sciences, COVID-19 Testing, 0302 clinical medicine, Pandemic, Health care, medicine, Retrospective analysis, Humans, AcademicSubjects/MED00860, Registries, 030212 general & internal medicine, Medical diagnosis, Pandemics, Retrospective Studies, business.industry, Public Health, Environmental and Occupational Health, Outbreak, General Medicine, Original Article, business, Delivery of Health Care, Rare disease
Abstract

Background The aims of this study were: to investigate the capacity of the rare disease healthcare network in Campania to diagnose patients with rare diseases during the outbreak of Covid-19; and to shed light on problematic diagnoses during this period. Methods To describe the impact of the Covid-19 pandemic on the diagnosis of patients with rare diseases, a retrospective analysis of the Campania Region Rare Disease Registry was performed. A tailored questionnaire was sent to rare disease experts to investigate major issues during the emergency period. Results Prevalence of new diagnoses of rare disease in March and April 2020 was significantly lower than in 2019 (117 versus 317, P Conclusions This study describes the effects of the Covid-19 outbreak on the diagnosis of rare disease in a single Italian region and investigates potential issues of diagnosis and management during this period.

Published
2021

3. Structure of Compound 17 bound to CK2alpha

Author

Brear, P., primary, De Fusco, C., additional, Atkinson, E., additional, Iegre, I., additional, Francis, N., additional, Venkitaraman, A., additional, Spring, D., additional, and Hyvonen, M., additional

Published
2022
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4. Musculoskeletal manifestations of childhood cancer and differential diagnosis with juvenile idiopathic arthritis (ONCOREUM): a multicentre, cross-sectional study

Author

Civino, A, Alighieri, G, Prete, E, Caroleo, A, Magni-Manzoni, S, Vinti, L, Romano, M, Santoro, N, Filocamo, G, Belotti, T, Santarelli, F, Gorio, C, Ricci, F, Colombini, A, Pastore, S, Cesaro, S, Barone, P, Verzegnassi, F, Olivieri, A, Ficara, M, Miniaci, A, Russo, G, Gallizzi, R, Pericoli, R, Breda, L, Mura, R, Podda, R, Onofrillo, D, Lattanzi, B, Tirtei, E, Maggio, M, De Santis, R, Consolini, R, Arlotta, A, La Torre, F, Mainardi, C, Pelagatti, M, Coassin, E, Capolsini, I, Burnelli, R, Tornesello, A, Soscia, F, De Fanti, A, Rigante, D, Pizzato, C, De Fusco, C, Abate, M, Roncadori, A, Rossi, E, Stabile, G, Biondi, A, Lepore, L, Conter, V, Rondelli, R, Pession, A, Ravelli, A, Amatruda, M, Atzeni, C, Bertolini, P, Bigucci, B, Caniglia, M, Cappella, M, Cattalini, M, Cefalo, M, Cellini, M, Cortis, E, Davi, S, De Benedetti, F, Di Cataldo, A, Fabbri, E, Fagioli, F, Fontanili, I, Garaventa, A, Gicchino, M, Ladogana, S, Locatelli, F, Magnolato, A, Marsili, M, Martino, S, Mascarin, M, Messina, C, Micalizzi, C, Porta, F, Rizzari, C, Civino A., Alighieri G., Prete E., Caroleo A. M., Magni-Manzoni S., Vinti L., Romano M., Santoro N., Filocamo G., Belotti T., Santarelli F., Gorio C., Ricci F., Colombini A., Pastore S., Cesaro S., Barone P., Verzegnassi F., Olivieri A. N., Ficara M., Miniaci A., Russo G., Gallizzi R., Pericoli R., Breda L., Mura R., Podda R. A., Onofrillo D., Lattanzi B., Tirtei E., Maggio M. C., De Santis R., Consolini R., Arlotta A., La Torre F., Mainardi C., Pelagatti M. A., Coassin E., Capolsini I., Burnelli R., Tornesello A., Soscia F., De Fanti A., Rigante D., Pizzato C., De Fusco C., Abate M. E., Roncadori A., Rossi E., Stabile G., Biondi A., Lepore L., Conter V., Rondelli R., Pession A., Ravelli A., Amatruda M., Atzeni C., Bertolini P., Bigucci B., Caniglia M., Cappella M., Cattalini M., Cefalo M. G., Cellini M., Cortis E., Davi S., De Benedetti F., Di Cataldo A., Fabbri E., Fagioli F., Fontanili I., Garaventa A., Gicchino M. F., Ladogana S., Locatelli F., Magnolato A., Marsili M., Martino S., Mascarin M., Messina C., Micalizzi C., Porta F., Rizzari C., Civino, A, Alighieri, G, Prete, E, Caroleo, A, Magni-Manzoni, S, Vinti, L, Romano, M, Santoro, N, Filocamo, G, Belotti, T, Santarelli, F, Gorio, C, Ricci, F, Colombini, A, Pastore, S, Cesaro, S, Barone, P, Verzegnassi, F, Olivieri, A, Ficara, M, Miniaci, A, Russo, G, Gallizzi, R, Pericoli, R, Breda, L, Mura, R, Podda, R, Onofrillo, D, Lattanzi, B, Tirtei, E, Maggio, M, De Santis, R, Consolini, R, Arlotta, A, La Torre, F, Mainardi, C, Pelagatti, M, Coassin, E, Capolsini, I, Burnelli, R, Tornesello, A, Soscia, F, De Fanti, A, Rigante, D, Pizzato, C, De Fusco, C, Abate, M, Roncadori, A, Rossi, E, Stabile, G, Biondi, A, Lepore, L, Conter, V, Rondelli, R, Pession, A, Ravelli, A, Amatruda, M, Atzeni, C, Bertolini, P, Bigucci, B, Caniglia, M, Cappella, M, Cattalini, M, Cefalo, M, Cellini, M, Cortis, E, Davi, S, De Benedetti, F, Di Cataldo, A, Fabbri, E, Fagioli, F, Fontanili, I, Garaventa, A, Gicchino, M, Ladogana, S, Locatelli, F, Magnolato, A, Marsili, M, Martino, S, Mascarin, M, Messina, C, Micalizzi, C, Porta, F, Rizzari, C, Civino A., Alighieri G., Prete E., Caroleo A. M., Magni-Manzoni S., Vinti L., Romano M., Santoro N., Filocamo G., Belotti T., Santarelli F., Gorio C., Ricci F., Colombini A., Pastore S., Cesaro S., Barone P., Verzegnassi F., Olivieri A. N., Ficara M., Miniaci A., Russo G., Gallizzi R., Pericoli R., Breda L., Mura R., Podda R. A., Onofrillo D., Lattanzi B., Tirtei E., Maggio M. C., De Santis R., Consolini R., Arlotta A., La Torre F., Mainardi C., Pelagatti M. A., Coassin E., Capolsini I., Burnelli R., Tornesello A., Soscia F., De Fanti A., Rigante D., Pizzato C., De Fusco C., Abate M. E., Roncadori A., Rossi E., Stabile G., Biondi A., Lepore L., Conter V., Rondelli R., Pession A., Ravelli A., Amatruda M., Atzeni C., Bertolini P., Bigucci B., Caniglia M., Cappella M., Cattalini M., Cefalo M. G., Cellini M., Cortis E., Davi S., De Benedetti F., Di Cataldo A., Fabbri E., Fagioli F., Fontanili I., Garaventa A., Gicchino M. F., Ladogana S., Locatelli F., Magnolato A., Marsili M., Martino S., Mascarin M., Messina C., Micalizzi C., Porta F., and Rizzari C.

Abstract

Background: Presenting symptoms of childhood cancers might mimic those of rheumatic diseases. However, the evidence available to guide differential diagnosis remains scarce. Preventing wrong or delayed diagnosis is therefore important to avoid incorrect administration of glucocorticoid or immunosuppressive therapy and worsening of prognosis. As such, we aimed to assess the prevalence and characteristics of presenting musculoskeletal manifestations in patients at cancer onset and to identify the factors that differentiate childhood malignancies with arthropathy from juvenile idiopathic arthritis. Methods: We did a multicentre, cross-sectional study at 25 paediatric haemato-oncology centres and 22 paediatric rheumatology centres in Italy. We prospectively recruited patients who were younger than 16 years that were newly diagnosed with cancer or juvenile idiopathic arthritis. We excluded patients with glucocorticoid pre-treatment (>1 mg/kg per day of oral prednisone or equivalent for ≥2 consecutive weeks). We collected data for patients with a new diagnosis of cancer or juvenile idiopathic arthritis using an electronic case report form on a web-based platform powered by the Cineca Interuniversity Consortium. The primary outcome was to describe the frequency and characteristics of musculoskeletal manifestations at cancer onset; and the secondary outcome was to identify factors that could discriminate malignancies presenting with arthropathy, with or without other musculoskeletal symptoms, from juvenile idiopathic arthritis using multivariable logistic regression analysis. Findings: Between May 1, 2015, and May 31, 2018, 1957 patients were eligible, of which 1277 (65%) had cancer and 680 (35%) had juvenile idiopathic arthritis. Musculoskeletal symptoms occurred in 324 (25% [95% CI 23·0–27·8]) of 1277 patients with cancer, of whom 207 had arthropathy. Patients with malignant bone tumours had the highest frequency of musculoskeletal symptoms (53 [80%] of 66), followed b

Published
2021

6. Crystal structure of MAT2a with quinazolinone fragment 5 bound in the allosteric site

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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7. Crystal structure of MAT2a bound to allosteric inhibitor and in vivo tool compound 28

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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8. Crystal structure of MAT2a bound to allosteric inhibitor (compound 29)

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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9. Crystal structure of MAT2a bound to allosteric inhibitor (compound 31)

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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10. Crystal structure of MAT2a with elaborated fragment 26 bound in the allosteric site

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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11. Crystal structure of MAT2a with triazinone fragment 1 bound in the allosteric site

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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12. Crystal structure of MAT2a with quinazoline fragment 2 bound in the allosteric site

Author

Schimpl, M., primary, De Fusco, C., additional, Borjesson, U., additional, Cheung, T., additional, Collie, I., additional, Evans, L., additional, Narasimhan, P., additional, Stubbs, C., additional, Vazquez-Chantada, M., additional, Wagner, D.J., additional, Grondine, M., additional, Tentarelli, S., additional, Underwood, E., additional, Argyrou, A., additional, Bagal, S., additional, Chiarparin, E., additional, Robb, G., additional, and Scott, J.S., additional

Published
2021
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14. A fragment-based approach leading to the discovery of a novel binding site and the selective CK2 inhibitor CAM4066

Author

De Fusco, C, Brear, P, Iegre, J, Georgiou, KH, Sore, HF, Hyvönen, M, Spring, DR, Iegre, Jessica [0000-0002-9074-653X], Sore, Hannah [0000-0002-6542-0394], Spring, David [0000-0001-7355-2824], and Apollo - University of Cambridge Repository

Subjects
Models, Molecular, Fragment-based drug discovery, Binding Sites, Dose-Response Relationship, Drug, Molecular Structure, CK2, education, Biphenyl Compounds, Crystallography, X-Ray, Article, Fragment linking, Structure-Activity Relationship, Drug Discovery, Humans, Molecular modelling, Kinase inhibition, Casein Kinase II, Protein Kinase Inhibitors, health care economics and organizations, ComputingMethodologies_COMPUTERGRAPHICS
Abstract

Graphical abstract, Recently we reported the discovery of a potent and selective CK2α inhibitor CAM4066. This compound inhibits CK2 activity by exploiting a pocket located outside the ATP binding site (αD pocket). Here we describe in detail the journey that led to the discovery of CAM4066 using the challenging fragment linking strategy. Specifically, we aimed to develop inhibitors by linking a high-affinity fragment anchored in the αD site to a weakly binding warhead fragment occupying the ATP site. Moreover, we describe the remarkable impact that molecular modelling had on the development of this novel chemical tool. The work described herein shows potential for the development of a novel class of CK2 inhibitors.

Published
2017

20. Crystal Structure of CK2alpha with CAM187 bound

Author

Brear, P., primary, Iegre, J., additional, North, A., additional, De Fusco, C., additional, Georgiou, K., additional, Lubin, A., additional, Carro, L., additional, Sore, H., additional, Hyvonen, M., additional, and Spring, D., additional

Published
2018
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42. Genetic predisposition to hemophagocytic lymphohistiocytosis: Report on 500 patients from the Italian registry

Author

Cetica, V, Sieni, E, Pende, D, Danesino, C, De Fusco, C, Locatelli, F, Micalizzi, C, Putti, M, Biondi, A, Fagioli, F, Moretta, L, Griffiths, G, Luzzatto, L, Aricò, M, Aricò, M., BIONDI, ANDREA, Cetica, V, Sieni, E, Pende, D, Danesino, C, De Fusco, C, Locatelli, F, Micalizzi, C, Putti, M, Biondi, A, Fagioli, F, Moretta, L, Griffiths, G, Luzzatto, L, Aricò, M, Aricò, M., and BIONDI, ANDREA

Abstract

Background Hemophagocytic lymphohistiocytosis (HLH) is a rare life-threatening disease affecting mostly children but also adults and characterized by hyperinflammatory features. A subset of patients, referred to as having familial hemophagocytic lymphohistiocytosis (FHL), have various underlying genetic abnormalities, the frequencies of which have not been systematically determined previously. Objective This work aims to further our understanding of the pathogenic bases of this rare condition based on an analysis of our 25 years of experience. Methods From our registry, we have analyzed a total of 500 unselected patients with HLH. Results Biallelic pathogenic mutations defining FHL were found in 171 (34%) patients; the proportion of FHL was much higher (64%) in patients given a diagnosis during the first year of life. Taken together, mutations of the genes PRF1 (FHL2) and UNC13D (FHL3) accounted for 70% of cases of FHL. Overall, a genetic diagnosis was possible in more than 90% of our patients with FHL. Perforin expression and the extent of degranulation have been more useful for diagnosing FHL than hemophagocytosis and the cytotoxicity assay. Of 281 (56%) patients classified as having "sporadic" HLH, 43 had monoallelic mutations in one of the FHL-defining genes. Given this gene dosage effect, FHL is not strictly recessive. Conclusion We suggest that the clinical syndrome HLH generally results from the combined effects of an exogenous trigger and genetic predisposition. Within this combination, different weights of exogenous and genetic factors account for the wide disease spectrum that ranges from HLH secondary to severe infection to FHL.

Published
2016

43. Genetic predisposition to hemophagocytic lymphohistiocytosis: Report on 500 patients from the Italian registry

Author

Cetica, V., Sieni, E., Pende, D., Danesino, C., De Fusco, C., Locatelli, Franco, Micalizzi, C., Putti, M. C., Biondi, A., Fagioli, F., Moretta, L., Griffiths, G. M., Luzzatto, L., Arico, M., Locatelli F. (ORCID:0000-0002-7976-3654), Cetica, V., Sieni, E., Pende, D., Danesino, C., De Fusco, C., Locatelli, Franco, Micalizzi, C., Putti, M. C., Biondi, A., Fagioli, F., Moretta, L., Griffiths, G. M., Luzzatto, L., Arico, M., and Locatelli F. (ORCID:0000-0002-7976-3654)

Abstract

Background Hemophagocytic lymphohistiocytosis (HLH) is a rare life-threatening disease affecting mostly children but also adults and characterized by hyperinflammatory features. A subset of patients, referred to as having familial hemophagocytic lymphohistiocytosis (FHL), have various underlying genetic abnormalities, the frequencies of which have not been systematically determined previously. Objective This work aims to further our understanding of the pathogenic bases of this rare condition based on an analysis of our 25 years of experience. Methods From our registry, we have analyzed a total of 500 unselected patients with HLH. Results Biallelic pathogenic mutations defining FHL were found in 171 (34%) patients; the proportion of FHL was much higher (64%) in patients given a diagnosis during the first year of life. Taken together, mutations of the genes PRF1 (FHL2) and UNC13D (FHL3) accounted for 70% of cases of FHL. Overall, a genetic diagnosis was possible in more than 90% of our patients with FHL. Perforin expression and the extent of degranulation have been more useful for diagnosing FHL than hemophagocytosis and the cytotoxicity assay. Of 281 (56%) patients classified as having "sporadic" HLH, 43 had monoallelic mutations in one of the FHL-defining genes. Given this gene dosage effect, FHL is not strictly recessive. Conclusion We suggest that the clinical syndrome HLH generally results from the combined effects of an exogenous trigger and genetic predisposition. Within this combination, different weights of exogenous and genetic factors account for the wide disease spectrum that ranges from HLH secondary to severe infection to FHL.

Published
2016

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