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  1. Achalasia is a rare esophageal motility disorder with an estimated annual incidence of 1–5/100.000 and a mean age at diagnosis > 50 years of age. Only a fraction of the patients has an onset during childhood (...

    Authors: Thijs Kuipers, Carlijn Mussies, Aaltje Lei, Gwen M.C. Masclee, Marc A. Benninga, Paul Fockens, Barbara A.J. Bastiaansen, Albert J. Bredenoord and Michiel P. van Wijk
    Citation: Orphanet Journal of Rare Diseases 2025 20:39
  2. Newborn screening (NBS) programs have significantly improved the health and outcomes of patients with inherited metabolic disorders (IMDs). Methods based on liquid chromatography/mass spectrometry (LC–MS/MS) a...

    Authors: Simona Fecarotta, Lorenzo Vaccaro, Alessandra Verde, Marianna Alagia, Alessandro Rossi, Chiara Colantuono, Maria Teresa Cacciapuoti, Patrizia Annunziata, Sara Riccardo, Antonio Grimaldi, Tonya Fusco, Rosa De Santis, Fernando Barretta, Lucia Albano, Daniela Crisci, Fabiana Vallone…
    Citation: Orphanet Journal of Rare Diseases 2025 20:38
  3. Classical homocystinuria (HCU) is a rare genetic metabolic disorder resulting in elevated homocysteine and methionine levels. The clinical characteristics and associated complications of HCU are well documente...

    Authors: Mahim Jain, Mehul Shah, Kamlesh M. Thakker, Andrew Rava, Agnes Pelts Block, Colette Ndiba-Markey and Lionel Pinto
    Citation: Orphanet Journal of Rare Diseases 2025 20:37
  4. Mucopolysaccharidosis (MPS) are a group of lysosomal storage diseases with substantial unmet medical needs—for both patients and caregivers. Approved therapies are limited, and the perception of investigative ...

    Authors: Anna-Maria Wiesinger and Florian B. Lagler
    Citation: Orphanet Journal of Rare Diseases 2025 20:36
  5. Spinocerebellar ataxia type 3 (SCA3) is a hereditary disease caused by abnormally expanded CAG repeats in the ATXN3 gene. The study aimed to identify potential biomarkers for assessing therapeutic efficacy by inv...

    Authors: Zhi-Xian Ye, Xuan-Yu Chen, Meng-Cheng Li, Xin-Yuan Chen, Yu-Sen Qiu, Ru-Ying Yuan, Zhi-Li Chen, Min-Ting Lin, Jian-Ping Hu, Ying Fu, Wan-Jin Chen, Ning Wang and Shi-Rui Gan
    Citation: Orphanet Journal of Rare Diseases 2025 20:35
  6. Sprengel deformity is a rare congenital malformation of the scapula defined by malposition during embryonic development. Affected individuals have limited range of motion of the shoulder and torticollis. Surgi...

    Authors: C. Antfang, A. Frommer, G. Gosheger, G. Toporowski, A. Laufer, J. D. Rölfing, R. Roedl and B. Vogt
    Citation: Orphanet Journal of Rare Diseases 2025 20:34
  7. Twenty-four-hour urinary copper excretion (24 h-UCE) is the standard diagnostic tool for dose adjustments in maintenance therapy in Wilson disease (WD) patients. Guidelines lack data if both variants of 24 h-U...

    Authors: Isabelle Mohr, Patrick Lamade, Christophe Weber, Viola Leidner, Sebastian Köhrer, Alexander Olkus, Matthias Lang, Andrea Langel, Patrischia Dankert, Melanie Greibich, Silke Wolf, Holger Zimmer, Patrick Michl, Aurélia Poujois, Karl Heinz Weiss and Uta Merle
    Citation: Orphanet Journal of Rare Diseases 2025 20:33
  8. Compound inheritance of TBX6 accounts for approximately 10% of sporadic congenital scoliosis (CS) cases. Such cases are called TBX6-associated congenital scoliosis (TACS). TACS has been reported to have certain c...

    Authors: Guanfeng Lin, Yang Yang, Zefu Chen, Sen Zhao, Yuchen Niu, You Du, Yiwei Zhao, Shengru Wang, Nan Wu and Jianguo Zhang
    Citation: Orphanet Journal of Rare Diseases 2025 20:32
  9. Compliance to highly restrictive diets is critical for children with Methylmalonic Acidemia (MMA), and their caregivers play a prominent role in children’s dietary treatment from early childhood through to adu...

    Authors: Qing Luo, Chunqin Liu, Lizhou Lin, Xuehua Liu and Huifang Chen
    Citation: Orphanet Journal of Rare Diseases 2025 20:31
  10. Lynch syndrome (LS)-associated colorectal cancer (CRC) always ascribes to pathogenic germline mutations in mismatch repair (MMR) genes. However, the penetrance of CRC varies among those with the same MMR gene ...

    Authors: Xuexin Wang, Zhijun Zheng, Dongliang Yu, Xiaojue Qiu, Ting Yang, Ruoran Li, Jing Liu, Xin Wang, Peng Jin, Jianqiu Sheng, Nan Qin, Na Li and Junfeng Xu
    Citation: Orphanet Journal of Rare Diseases 2025 20:30
  11. Significant advances in the treatment of transthyretin (ATTR) amyloidosis has led to an evolving understanding of the epidemiology of this condition. This systematic literature review (SLR) aims to synthesize ...

    Authors: Diego Delgado, Firas Dabbous, Nitin Shivappa, Faizan Mazhar, Eric Wittbrodt, Divya Shridharmurthy and Krister Järbrink
    Citation: Orphanet Journal of Rare Diseases 2025 20:29
  12. Sturge–Weber Syndrome (SWS) is a rare, sporadic neurocutaneous disorder affecting the skin, brain, and eyes, due to somatic activating mutations in GNAQ or, less commonly, GNA11 gene. It is characterized by at le...

    Authors: May El Hachem, Andrea Diociaiuti, Angela Galeotti, Francesca Grussu, Elena Gusson, Alessandro Ferretti, Carlo Efisio Marras, Davide Vecchio, Simona Cappelletti, Mariasavina Severino, Carlo Gandolfo, Simone Reali, Rosa Longo, Carmen D’Amore, Lodovica Gariazzo, Federica Marraffa…
    Citation: Orphanet Journal of Rare Diseases 2025 20:28
  13. Inclusion Body Myositis is an acquired muscle disease. Its pathogenesis is unclear due to the co-existence of inflammation, muscle degeneration and mitochondrial dysfunction. We aimed to provide a more advance...

    Authors: Daphne Wijnbergen, Mridul Johari, Ozan Ozisik, Peter A.C. ‘t Hoen, Friederike Ehrhart, Anaïs Baudot, Chris T. Evelo, Bjarne Udd, Marco Roos and Eleni Mina
    Citation: Orphanet Journal of Rare Diseases 2025 20:27
  14. Homozygous familial hypercholesterolaemia (HoFH) increases risk of premature cardiovascular events and cardiac death. In severe cases of HoFH, clinical signs and symptoms cannot be controlled well by non-surgi...

    Authors: Hao-Su Zhan, Lin Wei, Wei Qu, Zhi-Gui Zeng, Ying Liu, Yu-Le Tan, Jun Wang, Liang Zhang, En-Hui He, Guang-Peng Zhou, Hai-Ming Zhang, Zhi-Jun Zhu and Li-Ying Sun
    Citation: Orphanet Journal of Rare Diseases 2025 20:26
  15. Spinal muscular atrophy (SMA) is a motor neuron disorder encompassing 5q and non-5q forms, causing muscle weakness and atrophy due to spinal cord cell degeneration. Understanding its genetic basis is crucial f...

    Authors: Shanshan Gao, Duo Chen, Qianqian Li, Xuechao Zhao, Chen Chen, Lina Liu, Miao Jiang, Zhenhua Zhao, Yanhua Wang and Xiangdong Kong
    Citation: Orphanet Journal of Rare Diseases 2025 20:25
  16. Bulbar function is frequently impaired in patients with spinal muscular atrophy (SMA). Although extremely important for the patient’s quality of life, it is difficult to address therapeutically. Due to bulbar ...

    Authors: Jana Zang, Deike Weiss, Charlotte Dumitrascu, Julia Glinzer, Marie Wegner, Anna Strube, Jonas Denecke, Almut Niessen and Christina Pflug
    Citation: Orphanet Journal of Rare Diseases 2025 20:24
  17. Late-onset Pompe disease (LOPD) is an autosomal recessive lysosomal storage disorder that results in severe progressive proximal muscle weakness. Over time, reductions in muscle strength result in respiratory ...

    Authors: Dawn A. Laney, Kayla A. Banks, Eleanor G. Botha, Maria Keever, Valynne Long and Allison L. Foley
    Citation: Orphanet Journal of Rare Diseases 2025 20:23
  18. Syndromic genetic disorders affecting vision can also cause hearing loss, and Usher syndrome is by far the most common etiology. However, many other conditions can present dual sensory impairment. Accurate dia...

    Authors: Telma Machado, Telmo Cortinhal, Ana Luísa Carvalho, Francisco Teixeira-Marques, Rufino Silva, Joaquim Murta and João Pedro Marques
    Citation: Orphanet Journal of Rare Diseases 2025 20:22
  19. Intestinal Behçet’s syndrome (IBS) has high morbidity and mortality rates with serious complications. However, there are few specific biomarkers for IBS. The purposes of this study were to investigate the dist...

    Authors: Cheng-cheng Hou, Hua-fang Bao, Chun-hui She, Hua-yu Chen, Guan-xing Pan, Hua-ning Chen and Hong-bing Rui
    Citation: Orphanet Journal of Rare Diseases 2025 20:21
  20. X-linked adrenoleukodystrophy (XALD) can affect the eyes. Existing therapies are hampered by early quantitative examination methods. This study used an optical coherence tomography angiography system (OCTA) to...

    Authors: Lujie Zhang, Yongqiu Yu, Ting Liu, Chongyi Li, Liang Tan and Shuiqian Wen
    Citation: Orphanet Journal of Rare Diseases 2025 20:20
  21. There is no unified prognostic scoring system for light chain cardiac amyloidosis (AL-CA), particularly stage IIIb AL-CA. This study aimed to use invasive haemodynamic information to investigate markers that c...

    Authors: Jingyi Li, Yang Lu, Xiqi Xu, Zhuang Tian, Jian Li and Shuyang Zhang
    Citation: Orphanet Journal of Rare Diseases 2025 20:19
  22. Clinical research has offered many definitions and fragmented perspectives of joint morbidity in haemophilia. As joint damage, pain and mobility impairment can be present without clinical record of persistent ...

    Authors: Paul McLaughlin, Hortensia De la Corte-Rodriguez, Tom Burke, Francis Nissen, Martynas Aizenas, Katya Moreno and Jamie O’Hara
    Citation: Orphanet Journal of Rare Diseases 2025 20:18
  23. To enhance the detection rate of Neonatal Intrahepatic Cholestasis caused by Citrin Deficiency (NICCD) through newborn screening (NBS), we analyzed the metabolic profiles of missed patients and proposed a more...

    Authors: Peiyao Wang, Lingwei Hu, Yuhe Chen, Duo Zhou, Shasha Zhu, Ting Zhang, Ziyan Cen, Qimin He, Benqing Wu and Xinwen Huang
    Citation: Orphanet Journal of Rare Diseases 2025 20:17
  24. Hereditary angioedema (HAE) is a rare, autosomal dominant disorder causing swelling attacks in various parts of the body, resulting in impacts on health-related quality of life (HRQoL). The symptoms of HAE and...

    Authors: Lynne Broderick, April Foster, Laura Tesler Waldman, Laura Bordone and Aaron Yarlas
    Citation: Orphanet Journal of Rare Diseases 2025 20:16
  25. Glycogen storage disease (GSD) Ia is an ultra-rare inherited disorder of carbohydrate metabolism. Patients often present in the first months of life with fasting hypoketotic hypoglycemia and hepatomegaly. The ...

    Authors: Joost Groen, Bas M. de Haan, Ruben J. Overduin, Andrea B. Haijer-Schreuder, Terry GJ Derks and M. Rebecca Heiner-Fokkema
    Citation: Orphanet Journal of Rare Diseases 2025 20:15
  26. Severe combined immunodeficiency (SCID) is a set of rare monogenic inherited diseases that together represent the most severe form of the primary immunodeficiency disease phenotype. Preimplantation genetic tes...

    Authors: Lingyun Zhang, Lei Feng, Hao Shi, Wenbin Niu, Yanchi Wang, Bei Bu, Yidong Liu, Xiao Bao, Wenyan Song, Haixia Jin and Yingpu Sun
    Citation: Orphanet Journal of Rare Diseases 2025 20:14
  27. Transient receptor potential cation channel subfamily V member 2 (TRPV2) functions as a stretch-sensitive calcium channel, with overexpression in the sarcolemma of skeletal and cardiac myocytes leading to detr...

    Authors: Tsuyoshi Matsumura, Takayasu Fukudome, Yasufumi Motoyoshi, Akinori Nakamura, Satoshi Kuru, Kazuhiko Segawa, Ruriko Kitao, Chigusa Watanabe, Takuhisa Tamura, Toshiaki Takahashi, Hiroya Hashimoto, Masahiro Sekimizu, Akiko M. Saito, Masanori Asakura, Koichi Kimura and Yuko Iwata
    Citation: Orphanet Journal of Rare Diseases 2025 20:13
  28. The purpose of this study was to investigate perceptions and opinions on what constitutes determinants for quality of life (QoL) in individuals with syndromic Heritable Aortic Disease (sHTAD), utilizing a qual...

    Authors: Gry Velvin, Heidi Johansen, Gunnbjørg Aune, Kerstin Fugl-Meyer and Amy Østertun Geirdal
    Citation: Orphanet Journal of Rare Diseases 2025 20:12
  29. Non-isolated auditory neuropathy (AN), or syndromic AN, is marked by AN along with additional systemic manifestations. The diagnostic process is challenging due to its varied symptoms and overlap with other sy...

    Authors: Yang Cao, Xiaolong Zhang, Lan Lan, Danyang Li, Jin Li, Linyi Xie, Fen Xiong, Lan Yu, Xiaonan Wu, Hongyang Wang and Qiuju Wang
    Citation: Orphanet Journal of Rare Diseases 2025 20:11
  30. Ornithine transcarbamylase deficiency exhibits a high degree of clinical heterogeneity, making its screening and classification challenging in some instances. In this study, we first established a simple and s...

    Authors: Zhilei Zhang, Xin Wang, Jingjing Zhang, Xianwei Guan, Yanyun Wang, Dongyang Hong, Yahong Li, Peiying Yang, Yun Sun and Tao Jiang
    Citation: Orphanet Journal of Rare Diseases 2025 20:9
  31. Maple Syrup Urine Disease (MSUD) disease is a defect in the function of the Branched-chain 2-ketoacid dehydrogenase complex (BCKDH). It is caused by pathogenic biallelic variants in BCKDHA, BCKA decarboxylase,...

    Authors: Noushin Rostampour, Setila Dalili, Hossein Moravej, Zhila Afshar, Negar Yazdani, Seyedeh Tahereh Mousavi, Parastoo Rostami, Daniel Zamanfar, Maryam Yahay, Abdolhossein Nikravesh, Zahra Beyzaei, Mohamad Ahangar Davoodi, Atefeh Sedaghat, Tahora Hakemzadeh and Ali Talea
    Citation: Orphanet Journal of Rare Diseases 2025 20:8
  32. Fabry disease is an X-linked lysosomal storage disorder that causes accumulation of glycosphingolipids in body tissues and fluids, leading to progressive organ damage and life-threatening complications. It can...

    Authors: Eva Brand, Aleš Linhart, Patrick Deegan, Ruxandra Jurcut, Antonio Pisani, Roser Torra and Ulla Feldt-Rasmussen
    Citation: Orphanet Journal of Rare Diseases 2025 20:7
  33. Patients with cystic fibrosis (CF) are rare in China and differ significantly from the Caucasian populations in terms of clinical and genetic characteristics. However, the progression and mortality of Chinese ...

    Authors: Wangji Zhou, Yaqi Wang, Yanli Yang, Yanyan Sun, Chongsheng Cheng, Jinrong Dai, Shuzhen Meng, Keqi Chen, Yang Zhao, Xueqi Liu, Dingding Zhang, Song Liu, Weiguo Zhu, Yaping Liu, Kai-Feng Xu and Xinlun Tian
    Citation: Orphanet Journal of Rare Diseases 2025 20:6
  34. Alström syndrome (AS) is a recessively inherited genetic condition which is ultra-rare and extremely complex. Symptoms include retinal dystrophy, nystagmus, photophobia, hearing loss, obesity, insulin resistan...

    Authors: Akshat Sinha, Kerry Leeson-Beevers, Catherine Lewis, Elizabeth Loughery and Tarekegn Geberhiwot
    Citation: Orphanet Journal of Rare Diseases 2025 20:5
  35. NF2-related schwannomatosis (NF2) is associated with various tumors of the central and peripheral nervous system. There is a wide range of disabilities these patients may suffer from and there is no validated ...

    Authors: Anna C. Lawson McLean, Denise Löschner, Said Farschtschi, Nora F. Dengler and Steffen K. Rosahl
    Citation: Orphanet Journal of Rare Diseases 2025 20:4
  36. Epidermolysis bullosa (EB) is a serious, painful, hereditary and still incurable genetic condition. Due to blistering or wounds on the skin caused by the slightest touch, a person suffering from epidermolysis ...

    Authors: Gudrun Salamon, Sophie Strobl, Marie-Stephanie Matschnig and Anja Diem
    Citation: Orphanet Journal of Rare Diseases 2025 20:3
  37. Tuberous sclerosis complex (TSC) is an autosomal dominant genetic disorder affecting multiple organ systems, with a prevalence of 1:6,760–1:13,520 live births in Germany. On the molecular level, TSC is caused ...

    Authors: Jan H. Driedger, Julian Schröter, Steffen Syrbe and Afshin Saffari
    Citation: Orphanet Journal of Rare Diseases 2025 20:2
  38. Sarcoglycanopathies (SGPs) are limb-girdle muscular dystrophies (LGMDs) that can be classified into four types, LGMDR3, LGMDR4, LGMDR5, and LGMDR6, caused by mutations in the genes, SGCA, SGCB, SGCG, and SGCD, re...

    Authors: Rui Shimazaki, Yoshihiko Saito, Tomonari Awaya, Narihiro Minami, Ryo Kurosawa, Motoyasu Hosokawa, Hiroaki Ohara, Shinichiro Hayashi, Akihide Takeuchi, Masatoshi Hagiwara, Yukiko K. Hayashi, Satoru Noguchi and Ichizo Nishino
    Citation: Orphanet Journal of Rare Diseases 2025 20:1
  39. Arthrogryposis–renal dysfunction–cholestasis (ARC) syndrome, a rare autosomal recessive disorder, exhibits genetic heterogeneity with the VIPAS39 gene pathological variants being a distinct contributor.

    Authors: Jan Kafol, Barbara Gnidovec Strazisar, Ana Drole Torkar, Matjaz Homan, Sara Bertok, Matej Mlinaric, Jaka Sikonja, Jernej Kovač, Mirjana Perkovic Benedik, Tanja Kersnik Levart, Mojca Zerjav Tansek, Marina Praprotnik, Tadej Battelino, Maruša Debeljak and Urh Groselj
    Citation: Orphanet Journal of Rare Diseases 2024 19:496
  40. Friedreich’s ataxia (FA) is a rare genetic disorder caused by silencing of the frataxin gene (FXN), which leads to multiorgan damage. Nrf2 is a regulator of FXN, which is a modulator of oxidative stress in animal...

    Authors: Ankita Umrao, Monika Pahuja and Nabendu Sekhar Chatterjee
    Citation: Orphanet Journal of Rare Diseases 2024 19:495
  41. Spinal muscular atrophy (SMA) is a genetic neuromuscular disease associated with progressive loss of motor function. Risdiplam, a daily oral therapy, was approved in the United States for the treatment of SMA....

    Authors: Anish Patel, Walter Toro, Min Yang, Wei Song, Raj Desai, Mingchen Ye, Nadia Tabatabaeepour and Omar Dabbous
    Citation: Orphanet Journal of Rare Diseases 2024 19:494
  42. After diagnosis of Ehlers Danlos Syndrome (EDS), it is unclear what information patients and parents need and understand about EDS. The objective of this study is to characterize patient and parent knowledge a...

    Authors: Jordan T. Jones, Lora L. Black and William R. Black
    Citation: Orphanet Journal of Rare Diseases 2024 19:493
  43. Epidermolysis bullosa (EB) comprises a group of genetically and clinically heterogeneous diseases characterized by skin fragility and blistering. EB is incurable, and treatment consists of preventing blisters ...

    Authors: Elisabeth Daae, Kristin Billaud Feragen, Terje Naerland and Charlotte von der Lippe
    Citation: Orphanet Journal of Rare Diseases 2024 19:492
  44. Mucopolysaccharidosis (MPS) type 1 S and type 2 are rare lysosomal storage disorders characterized by impaired enzyme production, resulting in glycosaminoglycans accumulation within lysosomes. Enzyme Replaceme...

    Authors: Federico Spataro, Roberto Ria, Nada Chaoul, Antonio Giovanni Solimando, Vanessa Desantis, Angelo Vacca, Danilo Di Bona, Attilio Di Girolamo and Luigi Macchia
    Citation: Orphanet Journal of Rare Diseases 2024 19:491
  45. The aim of our multicenter study was to investigate the implementation of the European Fabry guidelines on therapeutic recommendations in female patients with Fabry disease (FD) and to analyze the impact of en...

    Authors: Malte Lenders, Albina Nowak, Markus Cybulla, Jessica Kaufeld, Anja Friederike Köhn, Nicole Maria Muschol, Christine Kurschat and Eva Brand
    Citation: Orphanet Journal of Rare Diseases 2024 19:490
  46. Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disease characterized by proximal muscle weakness and atrophy. The increasing availability of disease-modifying therapies has prompted the ...

    Authors: Xin Zhao, Zhenxiang Gong, Han Luo, Zehui Li, Rong Gao, Kangqin Yang, Wenhua Deng, Sirui Peng, Li Ba, Yang Liu and Min Zhang
    Citation: Orphanet Journal of Rare Diseases 2024 19:489
  47. GTPBP3 catalyzes τm5(s2) U biosynthesis at the 34th wobble position of mitochondrial tRNAs, the hypomodification of τm5U leads to mitochondrial disease. While twenty-three variants of GTPBP3 have been reported wo...

    Authors: Yaojun Xie, Keyi Li, Li Yang, Xiaofei Zeng, Zhehui Chen, Xue Ma, Luyi Zhang, Yuwei Zhou, Liqin Jin, Yanling Yang and Xiaoting Lou
    Citation: Orphanet Journal of Rare Diseases 2024 19:488
  48. Mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) syndrome is a maternally inherited mitochondrial disorder that mostly affects the central nervous system and skeletal muscl...

    Authors: Shuai Xu, Jialiu Jiang, Leilei Chang, Biao Zhang, Xiaolei Zhu and Fengnan Niu
    Citation: Orphanet Journal of Rare Diseases 2024 19:487
  49. Mitochondrial transcription factor A (TFAM) deficiency may cause mtDNA depletion syndrome, which manifests as neonatal liver failure or primary ovarian insufficiency, hearing loss, seizures, and intellectual d...

    Authors: Jing Zhao, Lian Chen, Ni Wang and Xin-bao Xie
    Citation: Orphanet Journal of Rare Diseases 2024 19:486