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Baban A, Cicenia M, Magliozzi M, Parlapiano G, Cirillo M, Pascolini G, Fattori F, Gnazzo M, Bruno P, De Luca L, Di Chiara L, Francalanci P, Udd B, Secinaro A, Amodeo A, Bertini ES, Savarese M, Drago F, Novelli A. Biallelic truncating variants in children with titinopathy represent a recognizable condition with distinctive muscular and cardiac characteristics: a report on five patients. Front Cardiovasc Med 2023; 10:1210378. [PMID: 37576110 PMCID: PMC10415037 DOI: 10.3389/fcvm.2023.1210378] [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: 04/22/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023] Open
Abstract
Background Monoallelic and biallelic TTN truncating variants (TTNtv) may be responsible for a wide spectrum of musculoskeletal and cardiac disorders with different age at onset. Although the prevalence of heterozygous TTNtv is relatively high in the general population, cardiac phenotyping (mainly cardiomyopathies, CMPs) in biallelic titinopathy has rarely been described in children. Methods We reviewed the medical records of pediatric patients with biallelic TTNtv and cardiac involvement. Clinical exome sequencing excluded pathogenic/likely pathogenic variants in major CMP genes. Results Five pediatric patients (four male) with biallelic TTNtv were included. Major arthrogryposis multiplex was observed in four patients; no patient showed intellectual disability. At a cardiac level, congenital heart defects (atrial and ventricular septal defects, n = 3) and left ventricular non-compaction (n = 1) were reported. All patients had dilated cardiomyopathy (DCM) diagnosed at birth in one patient and at the age of 10, 13, 14, and 17 years in the other four patients. Heart rhythm monitoring showed tachyarrhythmias (premature ventricular contractions, n = 2; non-sustained ventricular tachycardia, n = 2) and nocturnal first-degree atrio-ventricular block (n = 2). Cardiac magnetic resonance (CMR) imaging was performed in all patients and revealed a peculiar late gadolinium enhancement distribution in three patients. HyperCKemia was present in two patients and end-stage heart failure in four. End-organ damage requiring heart transplantation (HT) was indicated in two patients, who were operated on successfully. Conclusion Biallelic TTNtv should be considered when evaluating children with severe and early-onset DCM, particularly if skeletal and muscular abnormalities are present, e.g., arthrogryposis multiplex and congenital progressive myopathy. End-stage heart failure is common and may require HT.
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Affiliation(s)
- Anwar Baban
- Pediatric Cardiology and Arrhythmia/Syncope Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Marianna Cicenia
- Pediatric Cardiology and Arrhythmia/Syncope Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Monia Magliozzi
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Giovanni Parlapiano
- Pediatric Cardiology and Arrhythmia/Syncope Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Marco Cirillo
- Department of Imaging, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Giulia Pascolini
- Pediatric Cardiology and Arrhythmia/Syncope Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Fabiana Fattori
- Unit of Muscular and Neurodegenerative Disorders, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Maria Gnazzo
- Translational Cytogenomics Research Unit, Bambino Gesù Children’s Hospital, Rome, Italy
| | - Pasqualina Bruno
- Department of Cardiac Surgery, Cardiology, Heart and Lung Transplantation, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Lorenzo De Luca
- Pediatric Cardiology and Arrhythmia/Syncope Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Luca Di Chiara
- Pediatric Cardiac Intensive Care Unit, Department of Cardiology and Cardiac Surgery, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Paola Francalanci
- Department of Pathology, Bambino Gesù Children’s Hospital and Research Institute, IRCCS, Rome, Italy
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
| | - Aurelio Secinaro
- Advanced Cardiothoracic Imaging Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Antonio Amodeo
- Heart Failureand Transplant, Mechanical Circulatory Support Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Enrico Silvio Bertini
- Unit of Muscular and Neurodegenerative Disorders, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Fabrizio Drago
- Pediatric Cardiology and Arrhythmia/Syncope Complex Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
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2
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Zhao X, Gao C, Li L, Jiang L, Wei Y, Che F, Liu Q. Clinical exome sequencing identifies novel compound heterozygous mutations of the POMT2 gene in patients with limb-girdle muscular dystrophy. Int J Dev Neurosci 2023; 83:23-30. [PMID: 36217604 DOI: 10.1002/jdn.10233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 09/21/2022] [Accepted: 09/26/2022] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE Mutations in protein O-mannosyltransferase 2 (POMT2) (MIM#607439) have been identified in severe congenital muscular dystrophy such as Walker-Warburg syndrome (WWS) and milder limb-girdle muscular dystrophy type 2N (LGMD2N). The aim of this study is to investigate the genetic causes in patients with LGMD2N. METHODS Three patients diagnosed with mild limb-girdle muscular dystrophy were recruited. The genetically pathogenic variant was identified by clinical exome sequencing, and healthy controls were verified by Sanger sequencing. RESULTS Novel compound heterozygous mutations c.800A > G and c.1074_1075delinsAT of POMT2 were revealed in one affected individual by clinical exome sequencing. There was no report of these two variants and predicted to be highly damaging to the function of the POMT2. CONCLUSION The novel variants extend the spectrum of POMT2 mutations, which promotes the prognostic value of testing for POMT2 mutations in patients with LGMD2N.
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Affiliation(s)
- Xiangyu Zhao
- Department of Clinical Laboratory, Linyi People's Hospital, Shandong University, Linyi, China
| | - Chunhai Gao
- Department of Clinical Laboratory, Linyi People's Hospital, Shandong University, Linyi, China
| | - Lin Li
- Department of Clinical Laboratory, Linyi People's Hospital, Shandong University, Linyi, China
| | - Liangqian Jiang
- Department of Clinical Laboratory, Linyi People's Hospital, Shandong University, Linyi, China
| | - Yuda Wei
- Department of Clinical Laboratory, Linyi People's Hospital, Shandong University, Linyi, China
| | - Fengyuan Che
- Department of Central Laboratory, Linyi People's Hospital, Shandong University, Linyi, China.,Department of Neurology, Linyi People's Hospital, Shandong University, Linyi, China
| | - Qiji Liu
- Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
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3
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Khan A, Bruno LP, Alomar F, Umair M, Pinto AM, Khan AA, Khan A, Saima, Fabbiani A, Zguro K, Furini S, Mencarelli MA, Renieri A, Resciniti S, Peña-Guerra KA, Guzmán-Vega FJ, Arold ST, Ariani F, Khan SN. SPTBN5, Encoding the βV-Spectrin Protein, Leads to a Syndrome of Intellectual Disability, Developmental Delay, and Seizures. Front Mol Neurosci 2022; 15:877258. [PMID: 35782384 PMCID: PMC9248767 DOI: 10.3389/fnmol.2022.877258] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/07/2022] [Indexed: 12/14/2022] Open
Abstract
Whole exome sequencing has provided significant opportunities to discover novel candidate genes for intellectual disability and autism spectrum disorders. Variants in the spectrin genes SPTAN1, SPTBN1, SPTBN2, and SPTBN4 have been associated with neurological disorders; however, SPTBN5 gene-variants have not been associated with any human disorder. This is the first report that associates SPTBN5 gene variants (ENSG00000137877: c.266A>C; p.His89Pro, c.9784G>A; p.Glu3262Lys, c.933C>G; p.Tyr311Ter, and c.8809A>T; p.Asn2937Tyr) causing neurodevelopmental phenotypes in four different families. The SPTBN5-associated clinical traits in our patients include intellectual disability (mild to severe), aggressive tendencies, accompanied by variable features such as craniofacial and physical dysmorphisms, autistic behavior, and gastroesophageal reflux. We also provide a review of the existing literature related to other spectrin genes, which highlights clinical features partially overlapping with SPTBN5.
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4
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Novel compound heterozygous mutations in the TTN gene: elongation and truncation variants causing limb-girdle muscular dystrophy type 2J in a Han Chinese family. Neurol Sci 2022; 43:3427-3433. [DOI: 10.1007/s10072-022-05979-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 02/18/2022] [Indexed: 10/18/2022]
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5
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Lee JW, Park YS, Choi JY, Chang WJ, Lee S, Sung JS, Kim B, Lee SB, Lee SY, Choi J, Kim YH. Genetic Characteristics Associated With Drug Resistance in Lung Cancer and Colorectal Cancer Using Whole Exome Sequencing of Cell-Free DNA. Front Oncol 2022; 12:843561. [PMID: 35402275 PMCID: PMC8987589 DOI: 10.3389/fonc.2022.843561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 03/01/2022] [Indexed: 12/12/2022] Open
Abstract
Circulating cell-free DNA (cfDNA) can be used to characterize tumor genomes through next-generation sequencing (NGS)-based approaches. We aim to identify novel genetic alterations associated with drug resistance in lung cancer and colorectal cancer patients who were treated with EGFR-targeted therapy and cytotoxic chemotherapy through whole exome sequencing (WES) of cfDNA. A cohort of 18 lung cancer patients was treated with EGFR TKI or cytotoxic chemotherapy, and a cohort of 37 colorectal cancer patients was treated with EGFR monoclonal antibody or cytotoxic chemotherapy alone. Serum samples were drawn before and after development of drug resistance, and the genetic mutational profile was analyzed with WES data. For 110 paired cfDNA and matched germline DNA WES samples, mean coverage of 138x (range, 52–208.4x) and 47x (range, 30.5–125.1x) was achieved, respectively. After excluding synonymous variants, mutants identified in more than two patients at the time of acquired resistance were selected. Seven genes in lung cancer and 16 genes in colorectal cancer were found, namely, APC, TP53, KRAS, SMAD4, and EGFR. In addition, the GPR155 I357S mutation in lung cancer and ADAMTS20 S1597P and TTN R7415H mutations in colorectal cancer were frequently detected at the time of acquired resistance, indicating that these mutations have an important function in acquired resistance to chemotherapy. Our data suggest that novel genetic variants associated with drug resistance can be identified using cfDNA WES. Further validation is necessary, but these candidate genes are promising therapeutic targets for overcoming drug resistance in lung cancer and colorectal cancer.
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Affiliation(s)
- Jong Won Lee
- Cancer Research Institute, Korea University College of Medicine, Seoul, South Korea
- Brain Korea 21 Plus Project for Biomedical Science, Korea University College of Medicine, Seoul, South Korea
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
| | - Young Soo Park
- Cancer Research Institute, Korea University College of Medicine, Seoul, South Korea
| | - Jung Yoon Choi
- Division of Hematology–Oncology, Department of Internal Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, South Korea
| | - Won Jin Chang
- Division of Hematology–Oncology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, South Korea
| | - Soohyeon Lee
- Division of Hematology–Oncology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, South Korea
| | - Jae Sook Sung
- Cancer Research Institute, Korea University College of Medicine, Seoul, South Korea
| | - Boyeon Kim
- Cancer Research Institute, Korea University College of Medicine, Seoul, South Korea
- Brain Korea 21 Plus Project for Biomedical Science, Korea University College of Medicine, Seoul, South Korea
| | - Saet Byeol Lee
- Cancer Research Institute, Korea University College of Medicine, Seoul, South Korea
- Brain Korea 21 Plus Project for Biomedical Science, Korea University College of Medicine, Seoul, South Korea
| | - Sung Yong Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Medical Center, Korea University College of Medicine, Seoul, South Korea
| | - Jungmin Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
- Department of Genetics, Yale University School of Medicine, New Haven, CT, United States
| | - Yeul Hong Kim
- Cancer Research Institute, Korea University College of Medicine, Seoul, South Korea
- Brain Korea 21 Plus Project for Biomedical Science, Korea University College of Medicine, Seoul, South Korea
- Division of Hematology–Oncology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, South Korea
- *Correspondence: Yeul Hong Kim,
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6
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Huang S, Ma Y, Zhang Y, Xiong H, Chang X. Centronuclear myopathy due to a de novo nonsense variant and a maternally inherited splice-site variant in TTN: A case report. Clin Case Rep 2021; 9:e04478. [PMID: 34295493 PMCID: PMC8283857 DOI: 10.1002/ccr3.4478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/25/2021] [Accepted: 06/01/2021] [Indexed: 11/15/2022] Open
Abstract
Next-generation sequencing has resulted in an explosion of rare de novo TTN variants. The clinical interpretation of these de novo variants in patients with recessive titinopathy is very difficult. Here, we provided a useful way to identify compound heterozygous mutations with a de novo one.
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Affiliation(s)
- Sheng Huang
- Department of PediatricsPeking University First HospitalBeijingChina
- Department of NeurologyWuhan Children's HospitalTongji Medical CollegeHuazhong University of Science & TechnologyWuhanChina
| | - Yinan Ma
- Department of Central LaboratoryPeking University First HospitalBeijingChina
| | - Yu Zhang
- Department of PediatricsPeking University International HospitalBeijingChina
| | - Hui Xiong
- Department of PediatricsPeking University First HospitalBeijingChina
| | - Xingzhi Chang
- Department of PediatricsPeking University First HospitalBeijingChina
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7
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Abstract
PURPOSE OF REVIEW The last few years have confirmed previous assumptions of an enormous impact of the titin gene (TTN) on the occurrence of muscle disease, cardiomyopathy, or both together. The reason for this rather late understanding of its importance is because of the huge size which prevented sequencing of the whole gene by the previous Sanger technique in the individual cases. An update of the advances in diagnosing titinopathies is the main focus of this review. RECENT FINDINGS High throughput methods are now widely available for TTN sequencing and a corresponding explosion of different types of identified titinopathies is observed and published in the literature, although final confirmation is lacking in many cases with recessive missense variants. SUMMARY The implications of these findings for clinical practice are easy to understand: patients with previously undiagnosed muscle disease can now have a correct diagnosis and subsequently receive a likely prognosis, can have accurate genetic counseling for the whole family and early treatment for predictable complications from the heart and respiratory muscles. In addition not to forget, they can avoid wrong diagnoses leading to wrong treatments.
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8
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Tariq M, Latif M, Inam M, Jan A, Bibi N, Mohamoud HSA, Ali I, Ahmad H, Khan A, Nasir J, Wadood A, Jelani M. Whole exome sequencing reveals a homozygous SGCB variant in a Pakhtun family with limb girdle muscular dystrophy (LGMDR4) phenotype. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2020.101014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Novel homozygous variant in the TPO gene associated with congenital hypothyroidism and mild-intellectual disability. Hum Genome Var 2020; 7:41. [PMID: 33298898 PMCID: PMC7695822 DOI: 10.1038/s41439-020-00129-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 12/16/2022] Open
Abstract
Congenital hypothyroidism (CH) is one of the most common hereditary disorders affecting neonates worldwide. CH is a multifactorial complex disorder and can be caused by either environmental factors or genetic factors. We studied one Pakistani family with segregating mutations in CH inherited in an autosomal recessive manner. Using whole-exome sequencing (WES), we found a novel homozygous missense variant (c.2315A>G; p.Tyr772Cys) in the thyroid peroxidase (TPO) gene. Different bioinformatics prediction tools and Sanger sequencing were performed to verify the identified variant. Our findings highlight the importance of this gene in causing CH and mild-intellectual disability (ID) in two affected brothers. WES is a convenient and useful tool for the clinical diagnosis of CH and other associated disorders.
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10
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Al Hajri Q, Dash S, Feng WC, Garner HR, Anandakrishnan R. Identifying multi-hit carcinogenic gene combinations: Scaling up a weighted set cover algorithm using compressed binary matrix representation on a GPU. Sci Rep 2020; 10:2022. [PMID: 32029803 PMCID: PMC7005272 DOI: 10.1038/s41598-020-58785-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/20/2020] [Indexed: 01/16/2023] Open
Abstract
Despite decades of research, effective treatments for most cancers remain elusive. One reason is that different instances of cancer result from different combinations of multiple genetic mutations (hits). Therefore, treatments that may be effective in some cases are not effective in others. We previously developed an algorithm for identifying combinations of carcinogenic genes with mutations (multi-hit combinations), which could suggest a likely cause for individual instances of cancer. Most cancers are estimated to require three or more hits. However, the computational complexity of the algorithm scales exponentially with the number of hits, making it impractical for identifying combinations of more than two hits. To identify combinations of greater than two hits, we used a compressed binary matrix representation, and optimized the algorithm for parallel execution on an NVIDIA V100 graphics processing unit (GPU). With these enhancements, the optimized GPU implementation was on average an estimated 12,144 times faster than the original integer matrix based CPU implementation, for the 3-hit algorithm, allowing us to identify 3-hit combinations. The 3-hit combinations identified using a training set were able to differentiate between tumor and normal samples in a separate test set with 90% overall sensitivity and 93% overall specificity. We illustrate how the distribution of mutations in tumor and normal samples in the multi-hit gene combinations can suggest potential driver mutations for further investigation. With experimental validation, these combinations may provide insight into the etiology of cancer and a rational basis for targeted combination therapy.
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Affiliation(s)
- Qais Al Hajri
- Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, 24060, USA
| | - Sajal Dash
- Department of Computer Science, Virginia Tech, Blacksburg, VA, 24060, USA
| | - Wu-Chun Feng
- Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, 24060, USA
- Department of Computer Science, Virginia Tech, Blacksburg, VA, 24060, USA
| | - Harold R Garner
- Department of Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA, 24060, USA
- Gibbs Cancer Center and Research Institute, Spartanburg, SC, 29303, USA
| | - Ramu Anandakrishnan
- Department of Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA, 24060, USA.
- Gibbs Cancer Center and Research Institute, Spartanburg, SC, 29303, USA.
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Khan A, Wang R, Han S, Umair M, Abbas S, Khan MI, Alshabeeb MA, Alfadheland M, Zhang X. Correction to: Homozygous missense variant in the TTN gene causing autosomal recessive limb-girdle muscular dystrophy type 10. BMC MEDICAL GENETICS 2019; 20:195. [PMID: 31830914 PMCID: PMC6907177 DOI: 10.1186/s12881-019-0929-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Amjad Khan
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China.,The Research Center for Medical Genomics, China Medical University, Shenyang, China.,Developmental Medicine Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.,Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Rongrong Wang
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Shirui Han
- The Research Center for Medical Genomics, China Medical University, Shenyang, China
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Safdar Abbas
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Mohammad A Alshabeeb
- Developmental Medicine Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Majid Alfadheland
- Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Xue Zhang
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China. .,The Research Center for Medical Genomics, China Medical University, Shenyang, China.
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