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  1. This study investigated the agreement between various dried blood spot (DBS) and venous blood sample measurements of phenylalanine and tyrosine concentrations in Phenylketonuria (PKU) and Tyrosinemia type 1 (T...

    Authors: Kimber van Vliet, Wiggert G. van Ginkel, Esther van Dam, Pim de Blaauw, Martijn Koehorst, Hermi A. Kingma, Francjan J. van Spronsen and M. Rebecca Heiner-Fokkema

    Citation: Orphanet Journal of Rare Diseases 2020 15:82

    Content type: Research

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  2. Lipodystrophy syndromes are a group of disorders characterized by a loss of adipose tissue once other situations of nutritional deprivation or exacerbated catabolism have been ruled out. With the exception of ...

    Authors: David Araújo-Vilar, Antía Fernández-Pombo, Gemma Rodríguez-Carnero, Miguel Ángel Martínez-Olmos, Ana Cantón, Rocío Villar-Taibo, Álvaro Hermida-Ameijeiras, Alicia Santamaría-Nieto, Carmen Díaz-Ortega, Carmen Martínez-Rey, Antonio Antela, Elena Losada, Andrés E. Muy-Pérez, Blanca González-Méndez and Sofía Sánchez-Iglesias

    Citation: Orphanet Journal of Rare Diseases 2020 15:81

    Content type: Research

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  3. Osteogenesis imperfecta (OI) is a heterogeneous connective tissue disorder characterized by an increased tendency for fractures throughout life. Autosomal dominant (AD) mutations in COL1A1 and COL1A2 are causativ...

    Authors: Kristofer Andersson, Barbro Malmgren, Eva Åström, Ann Nordgren, Fulya Taylan and Göran Dahllöf

    Citation: Orphanet Journal of Rare Diseases 2020 15:80

    Content type: Research

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  4. Following the publication of the original article [1], the authors have requested to amend the Abstract and Discussion section as follows.

    Authors: Fernando Corvillo, Giovanni Ceccarini, Pilar Nozal, Silvia Magno, Caterina Pelosini, Sofía Garrido, Alberto López-Lera, Manuela Moraru, Carlos Vilches, Silvia Fornaciari, Sabrina Gabbriellini, Ferruccio Santini, David Araújo-Vilar and Margarita López-Trascasa

    Citation: Orphanet Journal of Rare Diseases 2020 15:79

    Content type: Correction

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    The original article was published in Orphanet Journal of Rare Diseases 2020 15:9

  5. To summarize and extend the phenotypic characterization of Multiple Congenital Anomalies-Hypotonia-Seizures Syndrome, and to discuss genotype-phenotype correlations.

    Authors: Xianru Jiao, Jiao Xue, Pan Gong, Xinhua Bao, Ye Wu, Yuehua Zhang, Yuwu Jiang and Zhixian Yang

    Citation: Orphanet Journal of Rare Diseases 2020 15:78

    Content type: Research

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  6. The original version of this article [1] unfortunately included an error to an author’s name. Author Manuela Schubert Baldo was erroneously presented as Manuela Baldo Schubert.

    Authors: Manuela Schubert Baldo and Laura Vilarinho

    Citation: Orphanet Journal of Rare Diseases 2020 15:77

    Content type: Correction

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    The original article was published in Orphanet Journal of Rare Diseases 2020 15:31

  7. Mitochondrial diseases (MD) are generally serious and progressive, inherited metabolic diseases. There is a high comorbidity of anxiety and depression and limitations in daily functioning. The complexity and d...

    Authors: Kim F. E. van de Loo, José A. E. Custers, Saskia Koene, Inge-Lot Klein, Mirian C. H. Janssen, Jan A. M. Smeitink and Christianne M. Verhaak

    Citation: Orphanet Journal of Rare Diseases 2020 15:76

    Content type: Research

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  8. To determine construct validity and test-retest reliability of Endurance Shuttle Tests as outcome measures for fatigability of remaining motor functions in children and adults with Spinal Muscular Atrophy (SMA...

    Authors: Bart Bartels, Janke F. de Groot, Laura E. Habets, Camiel A. Wijngaarde, Wendy Vink, Marloes Stam, Fay-Lynn Asselman, Ruben P. A. van Eijk and W. Ludo van der Pol

    Citation: Orphanet Journal of Rare Diseases 2020 15:75

    Content type: Research

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  9. Dubin-Johnson syndrome (DJS) is a rare autosomal recessive disorder characterized by predominantly conjugated hyperbilirubinemia that is caused by pathogenic mutations in the adenosine triphosphate-binding cas...

    Authors: Lina Wu, Yanmeng Li, Yi Song, Donghu Zhou, Siyu Jia, Anjian Xu, Wei Zhang, Hong You, Jidong Jia, Jian Huang and Xiaojuan Ou

    Citation: Orphanet Journal of Rare Diseases 2020 15:74

    Content type: Research

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  10. Cardiovascular disease frequently causes morbidity and mortality in mucopolysaccharidoses (MPS); however, cardiovascular anatomy and dysfunction in MPS IVA (Morquio A disease) is not well described. Consequent...

    Authors: Raymond Y. Wang, Kyle D. Rudser, Donald R. Dengel, Nicholas Evanoff, Julia Steinberger, Nina Movsesyan, Robert Garrett, Katherine Christensen, Deborah Boylan, Stephen R. Braddock, Marwan Shinawi, Qi Gan and Adriana M. Montaño

    Citation: Orphanet Journal of Rare Diseases 2020 15:73

    Content type: Research

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  11. To evaluate the effects of yoga on exercise capacity and quality of life in patients with lymphangioleiomyomatosis (LAM), a rare cystic lung disease in women.

    Authors: Xiangfeng Li, Wenshuai Xu, Lu Zhang, Yi Zu, Yu Li, Yanli Yang, Ying Xiang, Yun Xiang, Ling Chen, Wei Liu, Lixia Chen and Kai-Feng Xu

    Citation: Orphanet Journal of Rare Diseases 2020 15:72

    Content type: Research

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  12. Hemophagocytic Lymphohistiocytosis (HLH) is a rare clinical syndrome with high mortality rate. The diagnosis of HLH draws on a constellation of clinical and laboratory abnormalities including extremely high se...

    Authors: Jun Zhou, Jing Zhou, Dan-Ting Shen, Hemant Goyal, Zhi-Qi Wu and Hua-Guo Xu

    Citation: Orphanet Journal of Rare Diseases 2020 15:71

    Content type: Research

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  13. Spinal muscular atrophy (SMA) is a neurodegenerative disease that has a substantial and multifaceted burden on affected adults. While advances in supportive care and therapies are rapidly reshaping the therape...

    Authors: Hamish W. Y. Wan, Kate A. Carey, Arlene D’Silva, Steve Vucic, Matthew C. Kiernan, Nadine A. Kasparian and Michelle A. Farrar

    Citation: Orphanet Journal of Rare Diseases 2020 15:70

    Content type: Review

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  14. Historical controls (HCs) can be used for model parameter estimation at the study design phase, adaptation within a study, or supplementation or replacement of a control arm. Currently on the latter, there is ...

    Authors: Mercedeh Ghadessi, Rui Tang, Joey Zhou, Rong Liu, Chenkun Wang, Kiichiro Toyoizumi, Chaoqun Mei, Lixia Zhang, C. Q. Deng and Robert A. Beckman

    Citation: Orphanet Journal of Rare Diseases 2020 15:69

    Content type: Review

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  15. Pathophysiology of life-threatening acute metabolic decompensations (AMD) in propionic acidemia (PA) and isolated methylmalonic acidemia (MMA) is insufficiently understood. Here, we study the metabolomes of PA...

    Authors: H. A. Haijes, J. J. M. Jans, M. van der Ham, P. M. van Hasselt and N. M. Verhoeven-Duif

    Citation: Orphanet Journal of Rare Diseases 2020 15:68

    Content type: Research

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  16. Hereditary Transthyretin Amyloidosis Polyneuropathy is a rare life-threatening neurologic disease that imposes considerable mortality and it is associated with progressive related disabilities. In this study, ...

    Authors: Mónica Inês, Teresa Coelho, Isabel Conceição, Lara Ferreira, Mamede de Carvalho and João Costa

    Citation: Orphanet Journal of Rare Diseases 2020 15:67

    Content type: Research

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  17. While skin carcinomas are reported in chronic ulcers and in patients treated with hydroxyurea (HU) for myeloproliferative neoplasms, no skin carcinoma has been reported in patients with sickle cell disease (SC...

    Authors: Boutros Soutou, Patricia Senet, François Lionnet, Anoosha Habibi and Sélim Aractingi

    Citation: Orphanet Journal of Rare Diseases 2020 15:66

    Content type: Research

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  18. We describe the association of Becker muscular dystrophy (BMD) derived heart failure with the impairment of tissue homeostasis and remodeling capabilities of the affected heart tissue. We report that BMD heart...

    Authors: Martin Pesl, Sarka Jelinkova, Guido Caluori, Maria Holicka, Jan Krejci, Petr Nemec, Aneta Kohutova, Vita Zampachova, Petr Dvorak and Vladimir Rotrekl

    Citation: Orphanet Journal of Rare Diseases 2020 15:65

    Content type: Research

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  19. Hereditary spastic paraplegia (HSP) is a group of inherited disorders characterized by progressive spastic paresis of the lower limbs. Treatment is often focused on reducing spasticity and its physical consequ...

    Authors: Bas J. H. van Lith, Hans C. J. W. Kerstens, Laura A. C. van den Bemd, Maria W. G. Nijhuis-van der Sanden, Vivian Weerdesteyn, Rob J. E. M. Smeets, Klemens Fheodoroff, Bart P. C. van de Warrenburg and Alexander C. H. Geurts

    Citation: Orphanet Journal of Rare Diseases 2020 15:64

    Content type: Research

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  20. Gender differences in organ involvement and clinical severity have been poorly described in hereditary hemorrhagic telangiectasia (HHT). The aim of this study was to describe differences in the severity of HHT...

    Authors: J. M. Mora-Luján, A. Iriarte, E. Alba, M. A. Sánchez-Corral, P. Cerdà, F. Cruellas, Q. Ordi, X. Corbella, J. Ribas, J. Castellote and A. Riera-Mestre

    Citation: Orphanet Journal of Rare Diseases 2020 15:63

    Content type: Research

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  21. Re-fracture is the most serious complication in congenital pseudarthrosis of the tibia (CPT). There are reports that children with small cross-sectional areas in the sections of the pseudarthrosis are more pro...

    Authors: Yaoxi Liu, Ge Yang, Kun Liu, Jiangyan Wu, Guanghui Zhu, Jin Tang, Yu Zheng and Haibo Mei

    Citation: Orphanet Journal of Rare Diseases 2020 15:62

    Content type: Research

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  22. Winning entry to the Student Voice 2019. The article focuses on a personal encounter that I had as a medical student when I was sent off to ‘study’ a patient with a rare disease who had been admitted to hospital.

    Authors: Anna-Lucia Koerling

    Citation: Orphanet Journal of Rare Diseases 2020 15:50

    Content type: Letter to the Editor

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  23. Phenylketonuria (PKU; OMIM#261600) is a rare metabolic disorder caused by mutations in the phenylalanine hydroxylase (PAH) gene resulting in high phenylalanine (Phe) in blood and brain. If not treated early th...

    Authors: Claire Cannet, Andrea Pilotto, Júlio César Rocha, Hartmut Schäfer, Manfred Spraul, Daniela Berg, Peter Nawroth, Christian Kasperk, Gwendolyn Gramer, Dorothea Haas, David Piel, Stefan Kölker, Georg Hoffmann, Peter Freisinger and Friedrich Trefz

    Citation: Orphanet Journal of Rare Diseases 2020 15:61

    Content type: Research

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  24. Cystinosis is a rare autosomal recessive disorder caused by intracellular cystine accumulation. Proximal tubulopathy (Fanconi syndrome) is one of the first signs, leading to end-stage renal disease between the...

    Authors: Aurore Curie, Nathalie Touil, Ségolène Gaillard, Damien Galanaud, Nicolas Leboucq, Georges Deschênes, Denis Morin, Fanny Abad, Jacques Luauté, Eurielle Bodenan, Laurent Roche, Cécile Acquaviva, Christine Vianey-Saban, Pierre Cochat, François Cotton and Aurélia Bertholet-Thomas

    Citation: Orphanet Journal of Rare Diseases 2020 15:59

    Content type: Research

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  25. Wolfram syndrome is a rare genetic disease characterized by insulin-dependent diabetes, optic nerve atrophy, sensorineural hearing loss and neurodegeneration. Although olfactory dysfunction, a classical clinic...

    Authors: Raul Alfaro, Tasha Doty, Anagha Narayanan, Heather Lugar, Tamara Hershey and M. Yanina Pepino

    Citation: Orphanet Journal of Rare Diseases 2020 15:57

    Content type: Research

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  26. Acute hepatic porphyria (AHP) consists of three rare metabolic disorders. We investigated the risk of long-term sick leave, disability pension, and premature death in individuals with AHP compared to the gener...

    Authors: Carl Michael Baravelli, Aasne Karine Aarsand, Sverre Sandberg and Mette Christophersen Tollånes

    Citation: Orphanet Journal of Rare Diseases 2020 15:56

    Content type: Research

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  27. People with Prader-Willi Syndrome (PWS) experience great difficulties in social adaptation that could be explained by disturbances in emotional competencies. However, current knowledge about the emotional func...

    Authors: Nawelle Famelart, Gwenaelle Diene, Sophie Çabal-Berthoumieu, Mélanie Glattard, Catherine Molinas, Michèle Guidetti and Maithe Tauber

    Citation: Orphanet Journal of Rare Diseases 2020 15:55

    Content type: Research

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  28. Thalassaemia is a potentially life-threatening yet preventable inherited hemoglobin disorder. Understanding local socio-cultural context and level of public awareness about thalassaemia is pivotal for selectin...

    Authors: Mohammad Sorowar Hossain, Md. Mahbub Hasan, Enayetur Raheem, Muhammad Sougatul Islam, Abdullah Al Mosabbir, Mary Petrou, Paul Telfer and Mahbubul H. Siddiqee

    Citation: Orphanet Journal of Rare Diseases 2020 15:54

    Content type: Research

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  29. Ketone bodies form a vital energy source for end organs in a variety of physiological circumstances. At different times, the heart, brain and skeletal muscle in particular can use ketones as a primary substrat...

    Authors: Kaustuv Bhattacharya, Walid Matar, Adviye Ayper Tolun, Beena Devanapalli, Sue Thompson, Troy Dalkeith, Kate Lichkus and Michel Tchan

    Citation: Orphanet Journal of Rare Diseases 2020 15:53

    Content type: Research

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  30. Hereditary angioedema (HAE) in patients with normal C1 inhibitor (C1-INH) and the c.988A > G (p.Lys330Glu; p.K330E) variant in the plasminogen gene (HAE-PLG) is associated with skin swellings, abdominal pain a...

    Authors: Konrad Bork, Karin Wulff, Guenther Witzke, Thomas Machnig and Jochen Hardt

    Citation: Orphanet Journal of Rare Diseases 2020 15:52

    Content type: Research

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  31. Hypophosphatasia (HPP) is an inborn error of metabolism characterized by low levels of serum alkaline phosphatase (ALP). Scarce evidence exists about features that should signal the potential association betwe...

    Authors: C. Tornero, V. Navarro-Compán, J. A. Tenorio, S. García-Carazo, A. Buño, I. Monjo, C. Plasencia-Rodriguez, J. M. Iturzaeta, P. Lapunzina, K. E. Heath, A. Balsa and P. Aguado

    Citation: Orphanet Journal of Rare Diseases 2020 15:51

    Content type: Research

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  32. RPE65-associated LCA (RPE65-LCA) is an inherited retinal degeneration caused by the mutations of RPE65 gene and gene therapy has been developed to be a promising treatment. This study aims to evaluate the associa...

    Authors: Xue Wang, Chaofeng Yu, Radouil T. Tzekov, Yihua Zhu and Wensheng Li

    Citation: Orphanet Journal of Rare Diseases 2020 15:49

    Content type: Review

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  33. Purine nucleoside analogs (PNAs) are the recommended first-line treatment for patients with hairy cell leukemia (HCL), but they are associated with adverse events (AEs). Due to a lack of real-world evidence re...

    Authors: Narendranath Epperla, Melissa Pavilack, Temitope Olufade, Richa Bashyal, Jieni Li, Shaum M. Kabadi, Huseyin Yuce and Leslie Andritsos

    Citation: Orphanet Journal of Rare Diseases 2020 15:47

    Content type: Research

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  34. Alkaptonuria (AKU) is an ultra-rare autosomal recessive disease caused by a mutation in the homogentisate 1,2-dioxygenase (HGD) gene. One of the main obstacles in studying AKU, and other ultra-rare diseases, i...

    Authors: Ottavia Spiga, Vittoria Cicaloni, Cosimo Fiorini, Alfonso Trezza, Anna Visibelli, Lia Millucci, Giulia Bernardini, Andrea Bernini, Barbara Marzocchi, Daniela Braconi, Filippo Prischi and Annalisa Santucci

    Citation: Orphanet Journal of Rare Diseases 2020 15:46

    Content type: Research

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  35. Glycogen storage disease (GSD) Ia, caused by mutations in the glucose-6-phosphatase (G6PC) gene, is characterized by hepatomegaly, hypoglycemia, lactic acidosis, dyslipidemia, and hyperuricemia. This study aimed ...

    Authors: Yoo-Mi Kim, Jin-Ho Choi, Beom-Hee Lee, Gu-Hwan Kim, Kyung-Mo Kim and Han-Wook Yoo

    Citation: Orphanet Journal of Rare Diseases 2020 15:45

    Content type: Research

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  36. Pathogenic variants of the lysine acetyltransferase 6A or KAT6A gene are associated with a newly identified neurodevelopmental disorder characterized mainly by intellectual disability of variable severity and spe...

    Authors: Roser Urreizti, Estrella Lopez-Martin, Antonio Martinez-Monseny, Montse Pujadas, Laura Castilla-Vallmanya, Luis Alberto Pérez-Jurado, Mercedes Serrano, Daniel Natera-de Benito, Beatriz Martínez-Delgado, Manuel Posada-de-la-Paz, Javier Alonso, Purificación Marin-Reina, Mar O’Callaghan, Daniel Grinberg, Eva Bermejo-Sánchez and Susanna Balcells

    Citation: Orphanet Journal of Rare Diseases 2020 15:44

    Content type: Research

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  37. Prader-Willi Syndrome (PWS) is a genetic disorder caused by the lack of expression of certain paternal genes located on chromosome 15q11-q13. This anomaly causes cognitive, neurological and endocrine abnormali...

    Authors: Carla Munné-Miralvés, Lluís Brunet-Llobet, Abel Cahuana-Cárdenas, Sergi Torné-Durán, Jaume Miranda-Rius and Alejandro Rivera-Baró

    Citation: Orphanet Journal of Rare Diseases 2020 15:43

    Content type: Research

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  38. Despite early diagnosis and treatment, Classical Galactosemia (CG) patients frequently develop long-term complications, such as cognitive impairment. Available literature primarily reports on general intellect...

    Authors: Mendy M. Welsink-Karssies, Kim J. Oostrom, Merel E. Hermans, Carla E. M. Hollak, Mirian C. H. Janssen, Janneke G. Langendonk, Esmee Oussoren, M. Estela Rubio Gozalbo, Maaike de Vries, Gert J. Geurtsen and Annet M. Bosch

    Citation: Orphanet Journal of Rare Diseases 2020 15:42

    Content type: Research

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  39. Despite the low prevalence of uveitis in pediatric rheumatic diseases, potential problems as well as high disease burden can complicate its management. In this review, we systematically assessed the epidemiolo...

    Authors: Mohsen Jari, Reza Shiari, Omid Salehpour and Khosro Rahmani

    Citation: Orphanet Journal of Rare Diseases 2020 15:41

    Content type: Review

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  40. Defects in the glycosylphosphatidylinositol (GPI) biosynthesis pathway can result in a group of congenital disorders of glycosylation known as the inherited GPI deficiencies (IGDs). To date, defects in 22 of t...

    Authors: Leigh C. Carmody, Hannah Blau, Daniel Danis, Xingman A. Zhang, Jean-Philippe Gourdine, Nicole Vasilevsky, Peter Krawitz, Miles D. Thompson and Peter N. Robinson

    Citation: Orphanet Journal of Rare Diseases 2020 15:40

    Content type: Research

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  41. The necessity of early treatment for lysosomal storage diseases (LSDs) has triggered the development of newborn screening for LSDs in recent years. Here we report the first 70,000 newborns screened for Mucopol...

    Authors: Yin-Hsiu Chien, Ni-Chung Lee, Pin-Wen Chen, Hui-Ying Yeh, Michael H. Gelb, Pao-Chin Chiu, Shao-Yin Chu, Chen-Hao Lee, An-Ru Lee and Wuh-Liang Hwu

    Citation: Orphanet Journal of Rare Diseases 2020 15:38

    Content type: Research

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  42. Neurofibromatosis type 1 is a relatively common genetic disease, with a prevalence ranging between 1/3000 and 1/6000 people worldwide. The disease affects multiple systems with cutaneous, neurologic, and ortho...

    Authors: Christina Bergqvist, Amandine Servy, Laurence Valeyrie-Allanore, Salah Ferkal, Patrick Combemale and Pierre Wolkenstein

    Citation: Orphanet Journal of Rare Diseases 2020 15:37

    Content type: Position statement

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  43. Sensenbrenner syndrome, which is also known as cranioectodermal dysplasia (CED), is a rare, autosomal recessive ciliary chondrodysplasia characterized by a variety of clinical features including a distinctive ...

    Authors: Joanna Walczak-Sztulpa, Renata Posmyk, Ewelina M. Bukowska-Olech, Anna Wawrocka, Aleksander Jamsheer, Machteld M. Oud, Miriam Schmidts, Heleen H. Arts, Anna Latos-Bielenska and Anna Wasilewska

    Citation: Orphanet Journal of Rare Diseases 2020 15:36

    Content type: Research

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  44. Glycogen storage disease (GSD) is a rare inborn error of the synthesis or degradation of glycogen metabolism. GSD1, the most common type of GSD, is categorized into GSD1a and GSD1b which caused by the deficien...

    Authors: Maryam Eghbali, Maryam Abiri, Saeed Talebi, Zahra Noroozi, Marjan Shakiba, Parastoo Rostami, Hosein Alimadadi, Mehri Najafi, Fatemeh Yazarlou, Ali Rabbani and Mohammad Hossein Modarressi

    Citation: Orphanet Journal of Rare Diseases 2020 15:35

    Content type: Research

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  45. In Romania, 23 patients have been diagnosed with hereditary transthyretin amyloidosis (ATTRh), 18 of whom have the Glu54Gln mutation. This retrospective cohort included all patients with Glu54Gln-mutated ATTRh wh...

    Authors: Andreea Jercan, Amalia Ene, Ruxandra Jurcut, Mirela Draghici, Sorina Badelita, Mihaela Dragomir, Camelia Dobrea, Monica Popescu, Dumitru Jardan, Emanuel Stoica, Speranta Iacob, Ionela Codita, Claudiu Stan and Daniel Coriu

    Citation: Orphanet Journal of Rare Diseases 2020 15:34

    Content type: Research

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  46. The Rare Immunodeficiency, AutoInflammatory and AutoImmune Disease (RITA) network is a European Research Network (ERN) that brings together the leading centres for rare immune disorders. On April 2018 an onlin...

    Authors: Riccardo Papa, Andrew Cant, Christoph Klein, Mark A. Little, Nico M. Wulffraat, Marco Gattorno and Nicolino Ruperto

    Citation: Orphanet Journal of Rare Diseases 2020 15:33

    Content type: Letter to the Editor

    Published on: