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Deguti MM, Araujo FC, Terrabuio DRB, Araujo TF, Barbosa ER, Porta G, Cançado ELR. Wilson disease: the diagnostic challenge and treatment outcomes in a series of 262 cases. ARQUIVOS DE NEURO-PSIQUIATRIA 2024; 82:1-9. [PMID: 38811021 DOI: 10.1055/s-0044-1786855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
BACKGROUND Wilson disease (WD) is an autosomal recessive disorder that leads to organ toxicity due to copper overload. Early diagnosis is complicated by the rarity and diversity of manifestations. OBJECTIVE To describe the diagnostic features and response to treatment in our cohort of WD patients. METHODS This was a retrospective analysis of 262 WD patients stratified by clinical presentation, complementary exams, ATP7B genotyping, and response to treatment. RESULTS Symptoms occurred at an average age of 17.4 (7-49) years, and patients were followed up for an average of 9.6 (0-45) years. Patients presented mainly with hepatic (36.3%), neurologic (34.7%), and neuropsychiatric (8.3%) forms. Other presentations were hematologic, renal, or musculoskeletal, and 16.8% of the patients were asymptomatic. Kayser-Fleischer rings occurred in 78.3% of the patients, hypoceruloplasminemia in 98.3%, and elevated cupruria/24h in 73.0%, with an increase after D-penicillamine in 54.0%. Mutations of the ATP7B gene were detected in 84.4% of alleles. Brain magnetic resonance imaging showed abnormalities in the basal ganglia in 77.7% of patients. D-penicillamine was the first choice in 93.6% of the 245 patients, and 21.1% of these patients were switched due to adverse effects. The second-line therapies were zinc and trientine. The therapeutic response did not differ significantly between the drugs (p = 0.2). Nine patients underwent liver transplantation and 82 died. CONCLUSION Wilson disease is diagnosed at a late stage, and therapeutic options are limited. In people under 40 years of age with compatible manifestations, WD could be considered earlier in the differential diagnosis. There is a need to include ATP7B genotyping and therapeutic alternatives in clinical practice.
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Affiliation(s)
- Marta Mitiko Deguti
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo SP, Brazil
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Gastroenterologia e Hepatologia, São Paulo SP, Brazil
| | - Fabiana Cordeiro Araujo
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo SP, Brazil
| | | | - Thiago Ferreira Araujo
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Gastroenterologia e Hepatologia, São Paulo SP, Brazil
| | - Egberto Reis Barbosa
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Neurologia, São Paulo SP, Brazil
| | - Gilda Porta
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Pediatria, São Paulo SP, Brazil
| | - Eduardo Luiz Rachid Cançado
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo SP, Brazil
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Gastroenterologia e Hepatologia, São Paulo SP, Brazil
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Sharma PK, Aram A, Pandian V, Polaka Y. Wilson's Disease in an Early Adolescent: Classic Magnetic Resonance Imaging Findings. Cureus 2024; 16:e58092. [PMID: 38738008 PMCID: PMC11088745 DOI: 10.7759/cureus.58092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/10/2024] [Indexed: 05/14/2024] Open
Abstract
Wilson's disease (WD), alternatively termed hepatolenticular degeneration, represents a rare autosomal recessive disorder typified by disrupted copper metabolism, culminating in copper accumulation across various organs. WD commonly manifests with early-onset liver cirrhosis, with notable involvement of the central nervous system, particularly impacting the midbrain and basal ganglia. This case report delineates the clinical presentation of an early adolescent female with WD, accentuating classical magnetic resonance imaging (MRI) findings. These MRI findings, which include the "face of a giant panda sign" and the "Face of a miniature panda sign," are pivotal for expeditious diagnosis. Recognition of these classical signs underscores the indispensable role of MRI in elucidating the neurological dimensions of WD.
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Affiliation(s)
- Praveen K Sharma
- Department of Radiology, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Arun Aram
- Department of Radiology, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Vinoth Pandian
- Department of Radiology, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Yashaswinii Polaka
- Department of Radiology, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Ovchinnikova EV, Garbuz MM, Ovchinnikova AA, Kumeiko VV. Epidemiology of Wilson's Disease and Pathogenic Variants of the ATP7B Gene Leading to Diversified Protein Disfunctions. Int J Mol Sci 2024; 25:2402. [PMID: 38397079 PMCID: PMC10889319 DOI: 10.3390/ijms25042402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
Wilson's disease (WD) is an autosomal recessive disorder characterized by toxic accumulation of copper in the liver, brain, and other organs. The disease is caused by pathogenic variants in the ATP7B gene, which encodes a P-type copper transport ATPase. Diagnosing WD is associated with numerous difficulties due to the wide range of clinical manifestations and its unknown dependence on the physiological characteristics of the patient. This leads to a delay in the start of therapy and the subsequent deterioration of the patient's condition. However, in recent years, molecular genetic testing of patients using next generation sequencing (NGS) has been gaining popularity. This immediately affected the detection speed of WD. If, previously, the frequency of this disease was estimated at 1:35,000-45,000 people, now, when conducting large molecular genetic studies, the frequency is calculated as 1:7026 people. This certainly points to the problem of identifying WD patients. This review provides an update on the performance of epidemiological studies of WD and describes normal physiological functions of the protein and diversified disfunctions depending on pathogenic variants of the ATP7B gene. Future prospects in the development of WD genetic diagnostics are also discussed.
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Affiliation(s)
- Elena Vasilievna Ovchinnikova
- Institute of Life Sciences and Biomedicine, School of Natural Sciences, Far Eastern Federal University, Vladivostok 690922, Russia (M.M.G.)
| | - Mikhail Maksimovich Garbuz
- Institute of Life Sciences and Biomedicine, School of Natural Sciences, Far Eastern Federal University, Vladivostok 690922, Russia (M.M.G.)
| | - Anna Aleksandrovna Ovchinnikova
- Institute of Life Sciences and Biomedicine, School of Natural Sciences, Far Eastern Federal University, Vladivostok 690922, Russia (M.M.G.)
| | - Vadim Vladimirovich Kumeiko
- Institute of Life Sciences and Biomedicine, School of Natural Sciences, Far Eastern Federal University, Vladivostok 690922, Russia (M.M.G.)
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, Federal University, Vladivostok 690041, Russia
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Xue Z, Chen H, Yu L, Jiang P. A Systematic Review and Meta-Analysis of the R778L Mutation in ATP7B With Wilson Disease in China. Pediatr Neurol 2023; 145:135-147. [PMID: 37354629 DOI: 10.1016/j.pediatrneurol.2023.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 04/10/2023] [Accepted: 04/30/2023] [Indexed: 06/26/2023]
Abstract
BACKGROUND Wilson disease (WD) is a hereditary disorder of copper metabolism, caused by mutations in the ATP7B gene. There are more than 1000 pathogenic variants identified in ATP7B. R778L is the most common ATP7B mutation in China. METHODS To estimate whether R778L is associated with the onset age of WD and other clinical variables. Genotyping results of ATP7B gene were collected in our 22 patients with WD. We then conducted a systematic review and meta-analysis in databases, using the keywords Wilson disease and R778L mutation. RESULTS After the screening, a total of 23 studies were included, including 3007 patients with WD. Patients with R778L mutation presented at an earlier age (standardized mean difference [SMD] = -0.18 [95% confidence interval, -0.28 to 0.08], P = 0.0004) and had lower ceruloplasmin concentration (SMD = -0.21 [95% confidence interval, -0.40 to -0.02], P = 0.03) than the patients without the R778L mutation. However, sex (odds ratio [OR] = 1.07 [95% confidence interval, 0.89 to 1.29], P = 0.32) and first presentation were not associated with R778L mutation in WD (hepatic: OR = 1.37 [95% confidence interval, 0.87 to 2.16, P = 0.17; neurological: OR = 0.79 [95% confidence interval, 0.48 to 1.30, P = 0.35; mix: OR = 1.04 [95% confidence interval, 0.42 to 2.53, P = 0.87; asymptomatic/others: OR = 1.98 [95% confidence interval, 0.49 to 7.96, P = 0.34). CONCLUSIONS Our results indicated that the R778L mutation is associated with an earlier presentation and lower ceruloplasmin concentration in China.
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Affiliation(s)
- Ziru Xue
- Department of Neurology at The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Hongyu Chen
- The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Regional Medical Center for Children, Hangzhou, Zhejiang, China
| | - Lan Yu
- The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Regional Medical Center for Children, Hangzhou, Zhejiang, China.
| | - Peifang Jiang
- Department of Neurology at The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China; The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Regional Medical Center for Children, Hangzhou, Zhejiang, China.
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Wang Y, Fang J, Li B, Li C, Liu S, He J, Tao L, Li C, Yang Y, Li L, Xiao S. Clinical and genetic characterization of pediatric patients with Wilson's disease from Yunnan province where ethnic minorities gather. Front Genet 2023; 14:1142968. [PMID: 37020998 PMCID: PMC10067573 DOI: 10.3389/fgene.2023.1142968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/08/2023] [Indexed: 04/07/2023] Open
Abstract
Background: Wilson's disease (WD) is an autosomal recessive disease that is caused by mutations in the ATP7B (a copper-transporting P-type ATPase) gene. The disease has a low prevalence and is characterized by a copper metabolism disorder. However, various characteristics of the disease are determined by race and geographic region. We aimed to discover novel ATP7B mutations in pediatric patients with WD from Yunnan province, where there is a high proportion of ethnic minorities. We also performed a comprehensive analysis of ATP7B mutations in the different ethnic groups found in Southwest China. Methods: We recruited 45 patients who had been clinically diagnosed with WD, from 44 unrelated families. Routine clinical examinations and laboratory evaluations were performed and details of age, gender, ethnic group and symptoms at onset were collected. Direct sequencing of the ATP7B gene was performed in 39 of the 45 patients and their families. Results: In this study, participants came from seven different ethnic groups in China: Han, Bai, Dai, Zhuang, Yi, Hui and Jingpo. Three out of ten patients from ethnic minorities presented with elevated transaminases, when compared to the majority of the Han patients. Forty distinct mutations (28 missense, six splicing, three non-sense, two frameshift and one mutation of uncertain significance) were identified in the 39 patients with WD. Four of the mutations were novel and the most frequent mutation was c.2333G > T (p.R778L, allelic frequency: 15.38%). Using the phenotype-genotype correlation analysis, patients from ethnic minorities were shown to be more likely to have homozygous mutations (p = 0.035) than Han patients. The patients who carried the c.2310C > G mutation had lower serum ceruloplasmin levels (p = 0.012). In patients with heterozygous mutations, c.3809A > G was significantly associated with ethnic minorities (p = 0.042). The frequency of a protein-truncating variant (PTV) in Han patients was 34.38% (11/32), while we did not find PTV in patients from ethnic minorities. Conclusion: This study revealed genetic defects in 39 pediatric patients with WD from Yunnan province. Four novel mutations were identified and have enriched the WD database. We characterized the genotypes and phenotypes in different minorities, which will enhance the current knowledge on the population genetics of WD in China.
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Affiliation(s)
| | | | - Bin Li
- Kunming Children’s Hospital, Kunming, China
| | - Chongyang Li
- Department of Oncology, The Affiliated Hospital of Yunnan University, Kunming, China
| | - Shan Liu
- Yunnan Cancer Hospital, Kunming, China
| | - Juan He
- Kunming Children’s Hospital, Kunming, China
| | - Lvyan Tao
- Kunming Children’s Hospital, Kunming, China
| | - Cuifen Li
- Kunming Children’s Hospital, Kunming, China
| | - Ya Yang
- Kunming Children’s Hospital, Kunming, China
| | - Li Li
- Kunming Children’s Hospital, Kunming, China
- *Correspondence: Li Li, ; Shufang Xiao,
| | - Shufang Xiao
- Kunming Children’s Hospital, Kunming, China
- *Correspondence: Li Li, ; Shufang Xiao,
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Yang Y, Hao W, Wei T, Tang L, Qian N, Yang Y, Xi H, Zhang S, Yang W. Role of serum ceruloplasmin in the diagnosis of Wilson's disease: A large Chinese study. Front Neurol 2022; 13:1058642. [PMID: 36570465 PMCID: PMC9768184 DOI: 10.3389/fneur.2022.1058642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/03/2022] [Indexed: 12/12/2022] Open
Abstract
Background Conventionally, serum ceruloplasmin levels below the lower reference limit (0. 20 g/L) is considered a diagnostic cutoff point for Wilson's disease (WD). However, the lower reference limit varies with assay methodologies and the individuals in the included studies. The objective of this study was to determine the optimal cutoff value of serum ceruloplasmin levels for the diagnosis of WD in a large Chinese cohort and to identify factors associated with serum ceruloplasmin. Methods The cutoff value of ceruloplasmin levels was developed based on a retrospective derivation cohort of 3,548 subjects (1,278 patients with WD and 2,270 controls) and was validated in a separate validation cohort of 313 subjects (203 patients with WD and 110 controls). The performance of immunoassay was tested by receiver operating characteristic curve (ROC) analysis, and differences among the groups were analyzed by using the Mann-Whitney U-test and the Kruskal-Wallis test. Results The conventional cutoff of serum ceruloplasmin levels of <0.2 g/L had an accuracy of 81.9%, which led to a false-positive rate of 30.5%. The optimal cutoff of the serum ceruloplasmin level for separating patients with WD from other participants was 0.13 g/L, as determined by ROC analysis. This cutoff value had the highest AUC value (0.99), a sensitivity of 97.0%, and a specificity of 96.1%. Moreover, it prevented unnecessary further investigations and treatments for 492 false-positive patients. By determining the correlation between serum ceruloplasmin and phenotypes/genotypes in patients with WD, we found that the serum ceruloplasmin level was lower in early-onset patients and higher in late-onset patients. Interestingly, patients with the R778L/R919G genotype had higher serum ceruloplasmin levels than patients with other hot spot mutation combinations. Conclusion Our work determined the optimal cutoff value of serum ceruloplasmin levels for the diagnosis of WD and identified differences in serum ceruloplasmin levels with respect to the age of symptom onset and ATP7B mutations, which may provide some valuable insights into the diagnosis and counsel of patients with WD.
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Affiliation(s)
- Yue Yang
- Department of Graduate, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Wenjie Hao
- Department of Graduate, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Taohua Wei
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - LuLu Tang
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Nannan Qian
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Yulong Yang
- Department of Graduate, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Hu Xi
- Department of Graduate, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Shijie Zhang
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, Anhui, China,Shijie Zhang
| | - Wenming Yang
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, Anhui, China,Xin'an Medical Education Ministry Key Laboratory, Hefei, Anhui, China,*Correspondence: Wenming Yang
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Huang C, Fang M, Xiao X, Gao Z, Wang Y, Gao C. Genetic studies discover novel coding and non-coding mutations in patients with Wilson's disease in China. J Clin Lab Anal 2022; 36:e24459. [PMID: 35470480 PMCID: PMC9169201 DOI: 10.1002/jcla.24459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/02/2022] [Accepted: 04/16/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Wilson disease (WD) is a rare autosomal recessive genetic disorder associated with various mutations in the ATP7B gene and leads to significant disability or death if untreated. Early diagnosis and proper therapy usually predict a good prognosis, especially in pre-symptomatic WD. Genetic testing provides an accurate and effective diagnostic method for the early diagnosis of WD. METHODS We recruited 18 clinically diagnosed WD patients from 16 unrelated families and two independent individuals. The next-generation sequencing of the ATP7B gene was performed. The 293T cell lines were divided into wild-type (WT) ATP7B and mutated ATP7B groups. Cell proliferation was determined by Cell Counting Kit-8 (CCK-8) assay and apoptosis was detected by Annexin V/propidium iodide (PI) assays. RESULTS Pedigree analysis showed that compound heterozygous variants (17/18, 94.44%) were present in the majority of WD patients. A total of 33 ATP7B gene variants were identified, including three variants with uncertain significance (VUS) [two splice mutations (c.51+2T>G, c.1543+40G>A) and one frameshift mutation (c.3532_3535del)]. The CCK-8 and apoptosis assays demonstrated that the VUS of ATP7B could significantly affect the transportation of copper. CONCLUSIONS The study revealed genetic defects of 16 Chinese families and two independent individuals with WD, which enriched the mutation spectrum of the ATP7B gene worldwide and provided valuable information for studying the mutation types of ATP7B in the Chinese populations. Genetic testing in WD patients is necessary to shorten the time to initiate therapy, reduce damage to the liver and improve the prognosis.
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Affiliation(s)
- Chenjun Huang
- Department of Clinical Laboratory Medicine CenterYueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Meng Fang
- Department of Laboratory MedicineShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Xiao Xiao
- Department of Clinical Laboratory Medicine CenterYueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Zhiyuan Gao
- Department of Clinical Laboratory Medicine CenterYueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Ying Wang
- Department of Laboratory MedicineShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Chunfang Gao
- Department of Clinical Laboratory Medicine CenterYueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina
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