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Li X, Zhang W, Zhou D, Lv T, Xu A, Wang H, Zhao X, Zhang B, Li Y, Jia S, Wang Y, Wang X, Wu Z, Duan W, Wang Q, Nan Y, Shang J, Jiang W, Chen Y, Zheng S, Liu M, Sun L, You H, Jia J, Ou X, Huang J. Complex ATP7B mutation patterns in Wilson disease and evaluation of a yeast model for functional analysis of variants. Hum Mutat 2019; 40:552-565. [PMID: 30702195 DOI: 10.1002/humu.23714] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 12/16/2022]
Abstract
Wilson disease (WD) is a rare autosomal recessive genetic disorder that is associated with various mutations in the ATP7B gene. Although ATP7B variants are frequently identified, the exact mutation patterns remain unknown because of the absence of pedigree studies, and the functional consequences of individual ATP7B variants remain to be clarified. In this study, we recruited 65 clinically diagnosed WD patients from 60 unrelated families. Pedigree analysis showed that besides several ATP7B homozygous variants (8/65, 12.3%), compound heterozygous variants (43/65, 66.2%) were present in the majority of WD patients. There were 20% of the patients had one (12/65, 18.5%) or multiple (1/65, 1.5%) variants in only a single allele, characterized by a high ratio of splicing or frameshift variants. Nine ATP7B variants were cloned into the pAG426GPD yeast expression vector to evaluate their functional consequences, and the results suggested different degrees of functional disruption from mild or uncertain to severe, consistent with the corresponding phenotypes. Our study revealed the complex ATP7B mutation patterns in WD patients and the applicability of a yeast model system to the evaluation of the functional consequences of ATP7B variants, which is essential for WD cases that are difficult to interpret.
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Affiliation(s)
- Xiaojin Li
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Wei Zhang
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Donghu Zhou
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Tingxia Lv
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Anjian Xu
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Hejing Wang
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Xinyan Zhao
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Bei Zhang
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Yanmeng Li
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Siyu Jia
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Yu Wang
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Xiaoming Wang
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Zhen Wu
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Weijia Duan
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Qianyi Wang
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Yuemin Nan
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jia Shang
- Department of Infectious Diseases, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Wei Jiang
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yongpeng Chen
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Sujun Zheng
- Artificial Liver Center, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Mei Liu
- Artificial Liver Center, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Liying Sun
- Liver Transplant Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hong You
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Jidong Jia
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Xiaojuan Ou
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Jian Huang
- Experimental Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Clinical Research Center for Rare Liver Diseases, Capital Medical University, Beijing, China.,Liver Research Center, National Clinical Research Center for Digestive Diseases, Beijing, China
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4
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Huong NTM, Lien NTK, Ngoc ND, Mai NTP, Hoa NPA, Hai LT, Van Chi P, Van TT, Van Khanh T, Hoang NH. Three novel mutations in the ATP7B gene of unrelated Vietnamese patients with Wilson disease. BMC MEDICAL GENETICS 2018; 19:104. [PMID: 29914392 PMCID: PMC6006946 DOI: 10.1186/s12881-018-0619-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 05/25/2018] [Indexed: 12/02/2022]
Abstract
Background Wilson disease (OMIM # 277900) is a autosomal recessive disorder characterized by accumulation of copper in liver and brain. The accumulation of copper resulting in oxidative stress and eventually cell death. The disease has an onset in a childhood and result in a significant neurological impairment or require lifelong treatment. Another serious consequence of the disease is the development of liver damage and acute liver failure leading to liver transplant. The disorder is caused by mutations in the ATP7B gene, encoding a P-type copper transporting ATPase. Case presentation We performed genetic analysis of three unrelated patients from three different Vietnamese families. These patients had clinical features such as numbness of hands and feet, vomiting, insomnia, palsy, liver failure and Kayser–Fleischer (K–F) rings and were diagnosed with Wilson disease in the Human Genetics Department, Vietnam National Children’s Hospital. The entire coding region and adjacent splice sites of ATP7B gene were amplified and sequenced by Sanger method. Sequencing data were analyzed and compared with the ATP7B gene sequence published in Ensembl (ENSG00000123191) by using BioEdit software to detect mutations. Conclusions In this study, five mutations in the ATP7B gene were found. Among of these, three mutations were novel: c.750_751insG (p.His251Alafs*19) in exon 2, c.2604delC (p.Pro868Profs*5) in exon 11, and c.3077 T > A (p.Phe1026Tyr) in exon 14. Our results of the mutations associated with Wilson disease might facilitate the development of effective treatment plans. Electronic supplementary material The online version of this article (10.1186/s12881-018-0619-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nguyen Thi Mai Huong
- Human Genetics Department, Vietnam National Children's Hospital, Ministry of Health, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Nguyen Thi Kim Lien
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Caugiay, Hanoi, Vietnam
| | - Ngo Diem Ngoc
- Human Genetics Department, Vietnam National Children's Hospital, Ministry of Health, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Nguyen Thi Phuong Mai
- Human Genetics Department, Vietnam National Children's Hospital, Ministry of Health, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Nguyen Pham Anh Hoa
- Hepatology Department, Vietnam National Children's Hospital, Ministry of Health, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Le Thanh Hai
- Vietnam National Children's Hospital, Ministry of Health, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Phan Van Chi
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Caugiay, Hanoi, Vietnam
| | - Ta Thanh Van
- Hanoi Medical University, Ministry of Education and Training, 1 - Ton That Tung str., Dongda, Hanoi, Vietnam
| | - Tran Van Khanh
- Hanoi Medical University, Ministry of Education and Training, 1 - Ton That Tung str., Dongda, Hanoi, Vietnam
| | - Nguyen Huy Hoang
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Caugiay, Hanoi, Vietnam.
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6
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Yahata S, Yung S, Mandai M, Nagahara T, Kuzume D, Sakaeda H, Wakusawa S, Kato A, Tatsumi Y, Kato K, Hayashi H, Isaji R, Sasaki Y, Yano M, Hayashi K, Ishigami M, Goto H. Phenotypes and Chronic Organ Damage May Be Different among Siblings with Wilson's Disease. J Clin Transl Hepatol 2017; 5:27-30. [PMID: 28507923 PMCID: PMC5411353 DOI: 10.14218/jcth.2016.00064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/29/2017] [Accepted: 02/01/2017] [Indexed: 12/15/2022] Open
Abstract
Background and Aims: Cloning of ATP7B provided evidence that Wilson's disease is a hepatic copper toxicosis with a variety of extrahepatic complications. Affected siblings with the same genetic background and exposure to similar environmental factors may be a good model for the study of genotype-phenotype correlation. Methods: Twenty-three affected siblings in 11 families were selected from a database. The first phenotypes were determined according to the international proposal. The final types of chronic organ damage were re-evaluated for life-long management. Results: Phenotypes were identical in 5 of the families and different in 6 of the families. The acute hepatic phenotype H1 was found in 3 younger siblings and 1 older sibling. All survived an acute episode of hemolysis with underlying chronic liver disease. One also presented complication with neurological disease. The neurological phenotype N1 with neuropsychiatric symptoms and hepatic disease was found in 2 aged siblings of 1 family, in an older sibling in 3 families and in the oldest sibling in 1 family. Phenotypes in siblings were mainly split by either H1 occurring in random order or age-dependent N1. Types of chronic organ damage were identical in 8 of the families and different in 3 of the families. The same combination of chronic liver disease was found in 6 families and chronic liver disease complicated with neurological disease in 2 families. Split organ damage in siblings was found when an older sibling was complicated by neurological disease. There was no reverse combination of a younger sibling being complicated by neurological disease in any of the families. Conclusion: Phenotype combinations of siblings were mainly modified by externally-induced hemolytic episodes, while chronic organ damage in siblings was split by age-dependent neurological complications.
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Affiliation(s)
- Shinsuke Yahata
- Department of Gastroenterology, Hyogo Prefectural Kakogawa Medical Center, Kakogawa, Hyogo, Japan
| | - Seitetsu Yung
- Department of Gastroenterology, Hyogo Prefectural Kakogawa Medical Center, Kakogawa, Hyogo, Japan
| | - Mari Mandai
- Department of Gastroenterology and Hepatology, Tottori Prefectural Kousei Hospital, Kurayoshi, Tottori, Japan
| | - Takakazu Nagahara
- Department of Gastroenterology and Hepatology, Tottori Prefectural Kousei Hospital, Kurayoshi, Tottori, Japan
| | - Daisaku Kuzume
- Departments of Neurology and Gastroenterology, Chikamori Hospital, Kochi, Japan
| | - Hiroshi Sakaeda
- Departments of Neurology and Gastroenterology, Chikamori Hospital, Kochi, Japan
| | - Shinya Wakusawa
- Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Higashi-ku, Nagoya, Japan
| | - Ayako Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Koichi Kato
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
| | - Hisao Hayashi
- Department of Medicine, Aichi Gakuin University School of Pharmacy, Chikusa-ku, Nagoya, Japan
- *Correspondence to: Hisao Hayashi, Department of Medicine, Aichi Gakuin University School of Pharmacy, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan. Tel: +81-52-757-6779, Fax: +81-52-757-6799, E-mail:
| | - Ryohei Isaji
- Department of Gastroenterology, Konan Kosei Hospital, Takaya-cho, Konan, Aichi, Japan
| | - Yoji Sasaki
- Department of Gastroenterology, Konan Kosei Hospital, Takaya-cho, Konan, Aichi, Japan
| | - Motoyoshi Yano
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Kazuhiko Hayashi
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Masatoshi Ishigami
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Hidemi Goto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
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