1
|
Zhu J, Li W, Yu S, Lu W, Xu Q, Wang S, Qian Y, Guo Q, Xu S, Wang Y, Zhang P, Zhao X, Ni Q, Liu R, Li X, Wu B, Zhou S, Wang H. Further delineation of EBF3-related syndromic neurodevelopmental disorder in twelve Chinese patients. Front Pediatr 2023; 11:1091532. [PMID: 36937983 PMCID: PMC10020332 DOI: 10.3389/fped.2023.1091532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/13/2023] [Indexed: 03/06/2023] Open
Abstract
Neurodevelopmental disorders (NDDs) have heterogeneity in both clinical characteristics and genetic factors. EBF3 is a recently discovered gene associated with a syndromic form of NDDs characterized by hypotonia, ataxia and facial features. In this study, we report twelve unrelated individuals with EBF3 variants using next-generation sequencing. Five missense variants (four novel variants and one known variant) and seven copy number variations (CNVs) of EBF3 gene were identified. All of these patients exhibited developmental delay/intellectual disability. Ataxia was observed in 33% (6/9) of the patients, and abnormal muscle tone was observed in 55% (6/11) of the patients. Aberrant MRI reports were noted in 64% (7/11) of the patients. Four novel missense variants were all located in the DNA-binding domain. The pathogenicity of these variants was validated by in vitro experiments. We found that the subcellular protein localization of the R152C and F211L mutants was changed, and the distribution pattern of the R163G mutant was changed from even to granular. Luciferase assay results showed that the four EBF3 mutants' transcriptional activities were all significantly decreased (p < 0.01). Our study further expanded the gene mutation spectrum of EBF3-related NDD.
Collapse
Affiliation(s)
- Jitao Zhu
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Wenhui Li
- Neurology Department, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Sha Yu
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Qiong Xu
- Department of Child Health Care, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Sujuan Wang
- Department of Rehabilitation, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Yanyan Qian
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Qiufang Guo
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Suzhen Xu
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Yao Wang
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Ping Zhang
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Xuemei Zhao
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Qi Ni
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Renchao Liu
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Xu Li
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Bingbing Wu
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Correspondence: Bingbing Wu Shuizhen Zhou Huijun Wang
| | - Shuizhen Zhou
- Neurology Department, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Correspondence: Bingbing Wu Shuizhen Zhou Huijun Wang
| | - Huijun Wang
- Center for Molecular Medicine, Pediatrics Research Institute, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Correspondence: Bingbing Wu Shuizhen Zhou Huijun Wang
| |
Collapse
|
2
|
Li Q, Sun C, Guo J, Zhai W, Zhang L. Terminal 10q26.12 deletion is associated with neonatal asymmetric crying facies syndrome: a case report and literature review. Mol Cytogenet 2021; 14:36. [PMID: 34256807 PMCID: PMC8278754 DOI: 10.1186/s13039-021-00554-1] [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: 04/07/2021] [Accepted: 06/24/2021] [Indexed: 11/26/2022] Open
Abstract
Background The terminal 10q26 deletion syndrome is a clinically heterogeneous disorder without identified genotype–phenotype correlations. We reported a case of congenital asymmetric crying facies (ACF) syndrome with 10q26.12qter deletion and discussed their genotype–phenotype correlations and the potentially contributing genes involving the etiology of ACF. Methods and results We reported a case of neonatal 10q26.12qter deletion and summarized the genotype–phenotype correlations and contributing genes of 10q26.12qter deletion from DECIPHER database and published studies. Meanwhile, we analyzed the potential pathogenic genes contributing to 10q26 deletion syndrome. The female preterm infant harboring 10q26.12qter deletion showed symptoms of abnormal craniofacial appearance with rare congenital asymmetric crying facies, developmental retardation, congenital heart disease, and pulmonary artery hypertension. The deleted region was 13.28 Mb in size as detected by G-banding and array comparative genome hybridization, containing 62 Online Mendelian Inheritance in Man (OMIM) catalog genes. We summarized data from 17 other patients with 10q26.12qter deletion, 11 from the DECIPHER database and 6 from published studies. Patients with monoallelic WDR11 and FGFR2 deletions located in 10q26.12q26.2 were predisposed to craniofacial dysmorphisms, growth retardation, intellectual disability and cardiac diseases. Conclusion ACF is a facial dysmorphism frequently accompanied by other systemic deformities. It is a genetic abnormality that may associate with terminal 10q26.12 deletion. Early cardiac, audiologic, cranial examinations and genetic detection are needed to guide early diagnosis and treatment strategy.
Collapse
Affiliation(s)
- Qinghong Li
- Department of Neonatology, Northwest Women's and Children's Hospital, Yanta District, No. 1616, Yanxiang Road, Xi'an, 7100061, Shaanxi, People's Republic of China.
| | - Chunmei Sun
- Department of Neonatology, Northwest Women's and Children's Hospital, Yanta District, No. 1616, Yanxiang Road, Xi'an, 7100061, Shaanxi, People's Republic of China
| | - Jinzhen Guo
- Department of Neonatology, Northwest Women's and Children's Hospital, Yanta District, No. 1616, Yanxiang Road, Xi'an, 7100061, Shaanxi, People's Republic of China
| | - Wen Zhai
- Genetic Medical Center, Northwest Women's and Children's Hospital, Xi'an, 7100061, Shaanxi, People's Republic of China
| | - Liping Zhang
- Genetic Medical Center, Northwest Women's and Children's Hospital, Xi'an, 7100061, Shaanxi, People's Republic of China
| |
Collapse
|
3
|
Lopes F, Soares G, Gonçalves-Rocha M, Pinto-Basto J, Maciel P. Whole Gene Deletion of EBF3 Supporting Haploinsufficiency of This Gene as a Mechanism of Neurodevelopmental Disease. Front Genet 2017; 8:143. [PMID: 29062322 PMCID: PMC5640723 DOI: 10.3389/fgene.2017.00143] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/21/2017] [Indexed: 02/02/2023] Open
Abstract
Mutations in early B cell factor 3 (EBF3) were recently described in patients with a neurodevelopmental disorder (NDD) that includes developmental delay/intellectual disability, ataxia, hypotonia, speech impairment, strabismus, genitourinary abnormalities, and mild facial dysmorphisms. Several large 10q terminal and interstitial deletions affecting many genes and including EBF3 have been described in the literature. However, small deletions (<1 MB) affecting almost exclusively EBF3 are not commonly reported. We performed array comparative genomic hybridization (aCGH) (Agilent 180K) and quantitative PCR analysis in a female patient with intellectual disability. A clinical comparison between our patient and overlapping cases reported in the literature was also made. The patient carries a de novo 600 Kb deletion at 10q26.3 affecting the MGMT, EBF3, and GLRX genes. The patient has severe intellectual disability, language impairment, conductive hearing loss, hypotonia, vision alterations, triangular face, short stature, and behavior problems. This presentation overlaps that reported for patients carrying EBF3 heterozygous point mutations, as well as literature reports of patients carrying large 10qter deletions. Our results and the literature review suggest that EBF3 haploinsufficiency is a key contributor to the common aspects of the phenotype presented by patients bearing point mutations and indels in this gene, given that deletions affecting the entire gene (alone or in addition to other genes) are causative of a similar syndrome, including intellectual disability (ID) with associated neurological symptoms and particular facial dysmorphisms.
Collapse
Affiliation(s)
- Fátima Lopes
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,PT Associate Laboratory ICVS/3B's, University of Minho, Braga, Portugal
| | - Gabriela Soares
- Center for Medical Genetics Dr. Jacinto Magalhães, Centro Hospitalar do Porto, Porto, Portugal
| | | | | | - Patrícia Maciel
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,PT Associate Laboratory ICVS/3B's, University of Minho, Braga, Portugal
| |
Collapse
|
4
|
Lacaria M, Srour M, Michaud JL, Doja A, Miller E, Schwartzentruber J, Goldsmith C, Majewski J, Boycott KM. Expansion of the clinical phenotype of the distal 10q26.3 deletion syndrome to include ataxia and hyperemia of the hands and feet. Am J Med Genet A 2017; 173:1611-1619. [PMID: 28432728 DOI: 10.1002/ajmg.a.38231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 03/05/2017] [Indexed: 12/23/2022]
Abstract
Distal deletion of the long arm of chromosome 10 is associated with a dysmorphic craniofacial appearance, microcephaly, behavioral issues, developmental delay, intellectual disability, and ocular, urogenital, and limb abnormalities. Herein, we present clinical, molecular, and cytogenetic investigations of four patients, including two siblings, with nearly identical terminal deletions of 10q26.3, all of whom have an atypical presentation of this syndrome. Their prominent features include ataxia, mild-to-moderate intellectual disability, and hyperemia of the hands and feet, and they do not display many of the other features commonly associated with deletions of this region. These results point to a novel gene locus associated with ataxia and highlight the variability of the clinical presentation of patients with deletions of this region.
Collapse
Affiliation(s)
- Melanie Lacaria
- Department of Genetics, Children's Hospital of Eastern Ontario, Ottawa, Ontario
| | - Myriam Srour
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec.,Department of Pediatrics, McGill University, Montreal, Quebec
| | - Jacques L Michaud
- Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec.,Department of Pediatrics, Universite de Montreal, Montreal, Quebec.,Department of Neurosciences, Universite de Montreal, Montreal, Quebec
| | - Asif Doja
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario.,Division of Neurology, Children's Hospital of Eastern Ontario, Ottawa, Ontario.,Faculty of Medicine, University of Ottawa, Ottawa, Ontario
| | - Elka Miller
- Department of Medical Imaging, Children's Hospital of Eastern Ontario, Ottawa, Ontario
| | | | - Claire Goldsmith
- Department of Genetics, Children's Hospital of Eastern Ontario, Ottawa, Ontario
| | - Jacek Majewski
- Department of Human Genetics, McGill University, Montreal, Quebec
| | | | - Kym M Boycott
- Department of Genetics, Children's Hospital of Eastern Ontario, Ottawa, Ontario.,Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario.,Faculty of Medicine, University of Ottawa, Ottawa, Ontario
| |
Collapse
|
5
|
Screening for Subtelomeric Rearrangements in Thai Patients with Intellectual Disabilities Using FISH and Review of Literature on Subtelomeric FISH in 15,591 Cases with Intellectual Disabilities. GENETICS RESEARCH INTERNATIONAL 2016; 2016:9153740. [PMID: 27822388 PMCID: PMC5086359 DOI: 10.1155/2016/9153740] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 01/02/2023]
Abstract
We utilized fluorescence in situ hybridization (FISH) to screen for subtelomeric rearrangements in 82 Thai patients with unexplained intellectual disability (ID) and detected subtelomeric rearrangements in 5 patients. Here, we reported on a patient with der(20)t(X;20)(p22.3;q13.3) and a patient with der(3)t(X;3)(p22.3;p26.3). These rearrangements have never been described elsewhere. We also reported on a patient with der(10)t(7;10)(p22.3;q26.3), of which the same rearrangement had been reported in one literature. Well-recognized syndromes were detected in two separated patients, including 4p deletion syndrome and 1p36 deletion syndrome. All patients with subtelomeric rearrangements had both ID and multiple congenital anomalies (MCA) and/or dysmorphic features (DF), except the one with der(20)t(X;20), who had ID alone. By using FISH, the detection rate of subtelomeric rearrangements in patients with both ID and MCA/DF was 8.5%, compared to 2.9% of patients with only ID. Literature review found 28 studies on the detection of subtelomeric rearrangements by FISH in patients with ID. Combining data from these studies and our study, 15,591 patients were examined and 473 patients with subtelomeric rearrangements were determined. The frequency of subtelomeric rearrangements detected by FISH in patients with ID was 3%. Terminal deletions were found in 47.7%, while unbalanced derivative chromosomes were found in 47.9% of the rearrangements.
Collapse
|
6
|
Mild Phenotype in a Patient with a De Novo 6.3 Mb Distal Deletion at 10q26.2q26.3. Case Rep Genet 2015; 2015:242891. [PMID: 26294985 PMCID: PMC4532806 DOI: 10.1155/2015/242891] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 06/25/2015] [Indexed: 11/18/2022] Open
Abstract
We report on a 29-year-old Greek-Cypriot female with a de novo 6.3 Mb distal 10q26.2q26.3 deletion. She had a very mild neurocognitive phenotype with near normal development and intellect. In addition, she had certain distinctive features and postural orthostatic tachycardia. We review the relevant literature and postulate that certain of her features can be diagnostically relevant. This report illustrates the powerful diagnostic ability of array-CGH in the elucidation of relatively mild phenotypes.
Collapse
|