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Pan X, Liu L, Zhang X, Tang X, Qian G, Qiu H, Lin S, Yao H, Dong X, Tan B. FBXO11 variants are associated with intellectual disability and variable clinical manifestation in Chinese affected individuals. J Hum Genet 2024; 69:391-400. [PMID: 38740982 DOI: 10.1038/s10038-024-01255-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 04/01/2024] [Accepted: 04/24/2024] [Indexed: 05/16/2024]
Abstract
F-box protein 11 (FBXO11) is a member of F-Box protein family, which has recently been proved to be associated with intellectual developmental disorder with dysmorphic facies and behavioral abnormalities (IDDFBA, OMIM: 618089). In this study, 12 intellectual disability individuals from 5 Chinese ID families were collected, and whole exome sequencing (WES), sanger sequencing, and RNA sequencing (RNA-seq) were conducted. Almost all the affected individuals presented with mild to severe intellectual disability (12/12), global developmental delay (10/12), speech and language development delay (8/12) associated with a range of alternate features including increased body weight (7/12), short stature (6/12), seizures (3/12), reduced visual acuity (4/12), hypotonia (1/12), and auditory hallucinations and hallucinations (1/12). Distinguishingly, malformation was not observed in all the affected individuals. WES analysis showed 5 novel FBXO11 variants, which include an inframe deletion variant, a missense variant, two frameshift variants, and a partial deletion of FBXO11 (exon 22-23). RNA-seq indicated that exon 22-23 deletion of FBXO11 results in a new mRNA structure. Conservation and protein structure prediction demonstrated deleterious effect of these variants. The DEGs analysis revealed 148 differentially expressed genes shared among 6 affected individuals, which were mainly associated with genes of muscle and immune system. Our research is the first report of FBXO11-associated IDDFBA in Chinese individuals, which expands the genetic and clinical spectrum of this newly identified NDD/ID syndrome.
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Affiliation(s)
- Xin Pan
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Li Liu
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Xu Zhang
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Xianglan Tang
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Guanhua Qian
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Hao Qiu
- Center for Clinical Genetics and Genomics, DIAN Diagnostics, Hangzhou, 310058, Zhejiang, China
| | - Shuhong Lin
- Center for Clinical Genetics and Genomics, DIAN Diagnostics, Hangzhou, 310058, Zhejiang, China
| | - Hong Yao
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Xiaojing Dong
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China
| | - Bo Tan
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400000, China.
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Choi H, Kim JA, Cho KO, Kim HJ, Park MH. Case Report: Intellectual disability and borderline intellectual functioning in two sisters with a 12p11.22 loss. Front Genet 2024; 15:1355823. [PMID: 38628577 PMCID: PMC11018894 DOI: 10.3389/fgene.2024.1355823] [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: 12/14/2023] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
Multiple genome sequencing studies have identified genetic abnormalities as major causes of severe intellectual disability (ID). However, many children affected by mild ID and borderline intellectual functioning (BIF) lack a genetic diagnosis because known causative ID genetic mutations have not been identified or the role of genetic variants in mild cases is less understood. Genetic variant testing in mild cases is necessary to provide information on prognosis and risk of occurrence. In this study, we report two sibling patients who were 5 years 9 months old and 3 years 3 months old and presented to the hospital due to developmental delay. Clinical assessment and chromosomal microarray analysis were performed. The patients were diagnosed with mild intellectual disability (ID) and borderline intellectual functioning (BIF). Genetic analysis identified a loss of 12p11.22, including the OVCH1-AS1, OVCH1, and TMTC1 genes, which was the only variant that occurred in both sisters. Identical variants were found in their father with probable BIF. Neither patient presented any brain structural abnormalities or dysmorphism, and no exogenous factors or parenting problems were reported. Thus, loss of 12p11.22 may be associated with our patients' cognitive impairment. The OVCH1, OVCH1-AS1 and TMTC1 variants identified in this study are the most likely disease-causing genes in the sisters. Our findings may expand as yet limited knowledge on mild ID and BIF causative variants, which would further support the diagnosis even if the severity is mild.
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Affiliation(s)
- Haemi Choi
- Department of Psychiatry, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jeong-A. Kim
- Department of Psychiatry, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kyung-Ok Cho
- Department of Pharmacology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Biomedicine & Health Sciences, The Catholic University of Korea, Seoul, Republic of Korea
- Catholic Neuroscience Institute, The Catholic University of Korea, Seoul, Republic of Korea
- Institute for Aging and Metabolic Diseases, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Jung Kim
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Division of Psychotic Disorders, McLean Hospital, Belmont, MA, United States
| | - Min-Hyeon Park
- Department of Psychiatry, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Biomedicine & Health Sciences, The Catholic University of Korea, Seoul, Republic of Korea
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Koch I, Slovik M, Zhang Y, Liu B, Rennie M, Konz E, Cogne B, Daana M, Davids L, Diets IJ, Gold NB, Holtz AM, Isidor B, Mor-Shaked H, Neira Fresneda J, Niederhoffer KY, Nizon M, Pfundt R, Simon M, Stegmann A, Guillen Sacoto MJ, Wevers M, Barakat TS, Yanovsky-Dagan S, Atanassov BS, Toth R, Gao C, Bustos F, Harel T. USP27X variants underlying X-linked intellectual disability disrupt protein function via distinct mechanisms. Life Sci Alliance 2024; 7:e202302258. [PMID: 38182161 PMCID: PMC10770416 DOI: 10.26508/lsa.202302258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/07/2024] Open
Abstract
Neurodevelopmental disorders with intellectual disability (ND/ID) are a heterogeneous group of diseases driving lifelong deficits in cognition and behavior with no definitive cure. X-linked intellectual disability disorder 105 (XLID105, #300984; OMIM) is a ND/ID driven by hemizygous variants in the USP27X gene encoding a protein deubiquitylase with a role in cell proliferation and neural development. Currently, only four genetically diagnosed individuals from two unrelated families have been described with limited clinical data. Furthermore, the mechanisms underlying the disorder are unknown. Here, we report 10 new XLID105 individuals from nine families and determine the impact of gene variants on USP27X protein function. Using a combination of clinical genetics, bioinformatics, biochemical, and cell biology approaches, we determined that XLID105 variants alter USP27X protein biology via distinct mechanisms including changes in developmentally relevant protein-protein interactions and deubiquitylating activity. Our data better define the phenotypic spectrum of XLID105 and suggest that XLID105 is driven by USP27X functional disruption. Understanding the pathogenic mechanisms of XLID105 variants will provide molecular insight into USP27X biology and may create the potential for therapy development.
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Affiliation(s)
- Intisar Koch
- https://ror.org/00sfn8y78 Pediatrics and Rare Diseases Group, Sanford Research, Sioux Falls, SD, USA
| | - Maya Slovik
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- https://ror.org/01cqmqj90 Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | - Yuling Zhang
- https://ror.org/0207yh398 Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, PR China
| | - Bingyu Liu
- https://ror.org/0207yh398 Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, PR China
| | - Martin Rennie
- https://ror.org/00vtgdb53 School of Molecular Biosciences, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Emily Konz
- https://ror.org/00sfn8y78 Pediatrics and Rare Diseases Group, Sanford Research, Sioux Falls, SD, USA
| | - Benjamin Cogne
- Nantes Université, CHU de Nantes, CNRS, INSERM, L'institut du thorax, Nantes, France
- Nantes Université, CHU de Nantes, Service de Génétique médicale, Nantes, France
| | - Muhannad Daana
- Child Development Centers, Clalit Health Care Services, Jerusalem, Israel
| | - Laura Davids
- Department of Neurosciences, Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Illja J Diets
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Nina B Gold
- Massachusetts General Hospital for Children, Boston, MA, USA
- https://ror.org/03wevmz92 Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Alexander M Holtz
- https://ror.org/03wevmz92 Division of Genetics & Genomics, Department of Pediatrics, Boston Children's Hospital, and Harvard Medical School, Boston, MA, USA
| | - Bertrand Isidor
- Nantes Université, CHU de Nantes, CNRS, INSERM, L'institut du thorax, Nantes, France
- Nantes Université, CHU de Nantes, Service de Génétique médicale, Nantes, France
| | - Hagar Mor-Shaked
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- https://ror.org/01cqmqj90 Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | - Juanita Neira Fresneda
- https://ror.org/03czfpz43 Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Karen Y Niederhoffer
- https://ror.org/0160cpw27 Department of Medical Genetics, University of Alberta, Edmonton, Canada
| | - Mathilde Nizon
- Nantes Université, CHU de Nantes, CNRS, INSERM, L'institut du thorax, Nantes, France
- Nantes Université, CHU de Nantes, Service de Génétique médicale, Nantes, France
| | - Rolph Pfundt
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Meh Simon
- https://ror.org/0575yy874 Department of Genetics, University Medical Center Utrecht, Utrecht, Netherlands
| | - Apa Stegmann
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, Netherlands
| | | | - Marijke Wevers
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, Netherlands
- Discovery Unit, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Shira Yanovsky-Dagan
- https://ror.org/01cqmqj90 Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | - Boyko S Atanassov
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Rachel Toth
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, UK
| | - Chengjiang Gao
- https://ror.org/0207yh398 Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, PR China
| | - Francisco Bustos
- https://ror.org/00sfn8y78 Pediatrics and Rare Diseases Group, Sanford Research, Sioux Falls, SD, USA
- Department of Pediatrics, University of South Dakota, Sioux Falls, SD, USA
| | - Tamar Harel
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- https://ror.org/01cqmqj90 Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
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Furnier SM, Gangnon R, Daniels JL, Ellis Weismer S, Nadler C, Pazol K, Reyes NM, Rosenberg S, Rubenstein E, Wiggins LD, Yeargin-Allsopp M, Durkin MS. Racial and ethnic disparities in the co-occurrence of intellectual disability and autism: Impact of incorporating measures of adaptive functioning. Autism Res 2024; 17:650-667. [PMID: 38415400 PMCID: PMC11151777 DOI: 10.1002/aur.3107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/27/2024] [Indexed: 02/29/2024]
Abstract
Intellectual disability (ID) commonly co-occurs in children with autism. Although diagnostic criteria for ID require impairments in both cognitive and adaptive functioning, most population-based estimates of the frequency of co-occurring ID in children with autism-including studies of racial and ethnic disparities in co-occurring autism and ID-base the definition of ID solely on cognitive scores. The goal of this analysis was to examine the effect of including both cognitive and adaptive behavior criteria on estimates of co-occurring ID in a well-characterized sample of 2- to 5-year-old children with autism. Participants included 3264 children with research or community diagnoses of autism enrolled in the population-based Study to Explore Early Development (SEED) phases 1-3. Based only on Mullen Scales of Early Learning (MSEL) composite cognitive scores, 62.9% (95% confidence interval [CI]: 61.1, 64.7%) of children with autism were estimated to have co-occurring ID. After incorporating Vineland Adaptive Behavior Scales, Second Edition (VABS-II) composite or domains criteria, co-occurring ID estimates were reduced to 38.0% (95% CI: 36.2, 39.8%) and 45.0% (95% CI: 43.1, 46.9%), respectively. The increased odds of meeting ID criteria observed for non-Hispanic (NH) Black and Hispanic children relative to NH White children when only MSEL criteria were used were substantially reduced, though not eliminated, after incorporating VABS-II criteria and adjusting for selected socioeconomic variables. This study provides evidence for the importance of considering adaptive behavior as well as socioeconomic disadvantage when describing racial and ethnic disparities in co-occurring ID in epidemiologic studies of autism.
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Affiliation(s)
- Sarah M. Furnier
- Department of Population Health Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Ronald Gangnon
- Department of Population Health Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Julie L. Daniels
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Susan Ellis Weismer
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Cy Nadler
- Division of Developmental and Behavioral Health, Children’s Mercy Kansas City, Kansas City, Missouri, USA
| | - Karen Pazol
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Nuri M. Reyes
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Steven Rosenberg
- Department of Psychiatry, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Eric Rubenstein
- Department of Epidemiology, Boston University, Boston, Massachusetts, USA
| | - Lisa D. Wiggins
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Marshalyn Yeargin-Allsopp
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Maureen S. Durkin
- Department of Population Health Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Huyghebaert J, Mateiu L, Elinck E, Van Rossem KE, Christiaenssen B, D'Incal CP, McCormack MK, Lazzarini A, Vandeweyer G, Kooy RF. Identification of a DLG3 stop mutation in the MRX20 family. Eur J Hum Genet 2024; 32:317-323. [PMID: 38273165 PMCID: PMC10923781 DOI: 10.1038/s41431-024-01537-7] [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: 06/30/2023] [Revised: 12/22/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024] Open
Abstract
Here, we identified the causal mutation in the MRX20 family, one of the larger X-linked pedigrees that have been described in which no gene had been identified up till now. In 1995, the putative disease gene had been mapped to the pericentromeric region on the X chromosome, but no follow-up studies were performed. Here, whole exome sequencing (WES) on two affected and one unaffected family member revealed the c.195del/p.(Thr66ProfsTer55) mutation in the DLG3 gene (NM_021120.4) that segregated with the affected individuals in the family. DLG3 mutations have been consequently associated with intellectual disability and are a plausible explanation for the clinical abnormalities observed in this family. In addition, we identified two other variants co-segregating with the phenotype: a stop gain mutation in SSX1 (c.358G>T/p.(Glu120Ter)) (NM_001278691.2) and a nonsynonymous SNV in USP27X (c.56 A>G/p.(Gln19Arg)) (NM_001145073.3). RNA sequencing revealed 14 differentially expressed genes (p value < 0.1) in 7 affected males compared to 4 unaffected males of the family, including four genes known to be associated with neurological disorders. Thus, in this paper we identified the c.195del/p.(Thr66ProfsTer55) mutation in the DLG3 gene (NM_021120.4) as likely responsible for the phenotype observed in the MRX20 family.
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Affiliation(s)
| | - Ligia Mateiu
- Department of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | - Ellen Elinck
- Department of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | | | | | | | - Michael K McCormack
- Department of Psychiatry, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, 08854, USA
- Department of Cell Biology and Neurosciences, Virtua Health College of Medicine and Life Sciences of Rowan University, Stratford, NJ, 08084, USA
| | - Alice Lazzarini
- Department of Neurology, Rutgers University-Robert Wood Johnson Medical School, New Brunswick, NJ, 08903, USA
| | - Geert Vandeweyer
- Department of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | - R Frank Kooy
- Department of Medical Genetics, University of Antwerp, Antwerp, Belgium.
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Escudero SC, Sepúlveda EM. Pragmatic competence in people with dual diagnosis: down syndrome and autism spectrum disorder. BMC Psychol 2024; 12:74. [PMID: 38360760 PMCID: PMC10870447 DOI: 10.1186/s40359-023-01508-5] [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: 09/01/2023] [Accepted: 12/23/2023] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Pragmatics is an area that can be affected in a wide variety of disorders. In this sense, Syndromic Autism is defined as a disorder in which a causal link is established between an associated syndrome and Autism Spectrum Disorder (ASD). Likewise, Down Syndrome (DS) is one of the main genetically based syndromes in which ASD is described as one of its possible manifestations. In this direction, people with DS are described as social beings whereas in ASD there seems to be a specific alteration of this domain. METHODS In this study, pragmatic performance was analysed in a sample of 72 participants, where comparisons were made between the scores obtained by children with ASD (n = 24), with DS (n = 24) and with DS + ASD (n = 24). RESULTS The Social Communication Questionnaire (SCQ), the Block Objective and Criterial Language Battery (BLOC-SR) and the Neuropsychology subtest (NEPSY-II) aimed at Theory of Mind (ToM) identified significant differences between the groups. However, two-to-two comparisons reported no significant differences between DS and DS + ASD. CONCLUSIONS Although several studies report differences between the three proposed groups, our data seem to suggest that ASD symptomatology in DS is associated with Intellectual Developmental Disorder (IDD). However, the lack of solid scientific evidence regarding comorbid diagnosis makes further research along these lines indispensable. TRIAL REGISTRATION This study was approved by the Ethics Committee for Social Research at UCLM with reference CEIS-704,511-L8M4.
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Affiliation(s)
- Sara Cortés Escudero
- Department of Psychology, Faculty of Health Sciences, University of Castilla-La-Mancha, Avda Real Fábrica de la Seda s/n, 45600, Talavera de la Reina, Spain
| | - Esther Moraleda Sepúlveda
- Department of Psychology, Faculty of Pychology, University Complutense. Campus de Somosaguas, 28223, Pozuelo de Alarcón. Madrid, Spain.
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Hsu HHL, Lane JM, Schnaas L, Coull BA, Osorio-Valencia E, Chiu YHM, Wilson A, Just AC, Kloog I, Bellinger D, Téllez-Rojo MM, Wright RO. Sensitive development windows of prenatal air pollution and cognitive functioning in preschool age Mexican children. Environ Epidemiol 2024; 8:e291. [PMID: 38343731 PMCID: PMC10852370 DOI: 10.1097/ee9.0000000000000291] [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: 07/18/2023] [Accepted: 12/18/2023] [Indexed: 03/13/2024] Open
Abstract
Introduction Neurotoxicity resulting from air pollution is of increasing concern. Considering exposure timing effects on neurodevelopmental impairments may be as important as the exposure dose. We used distributed lag regression to determine the sensitive windows of prenatal exposure to fine particulate matter (PM2.5) on children's cognition in a birth cohort in Mexico. Methods Analysis included 553 full-term (≥37 weeks gestation) children. Prenatal daily PM2.5 exposure was estimated using a validated satellite-based spatiotemporal model. McCarthy Scales of Children's Abilities (MSCA) were used to assess children's cognitive function at 4-5 years old (lower scores indicate poorer performance). To identify susceptibility windows, we used Bayesian distributed lag interaction models to examine associations between prenatal PM2.5 levels and MSCA. This allowed us to estimate vulnerable windows while testing for effect modification. Results After adjusting for maternal age, socioeconomic status, child age, and sex, Bayesian distributed lag interaction models showed significant associations between increased PM2.5 levels and decreased general cognitive index scores at 31-35 gestation weeks, decreased quantitative scale scores at 30-36 weeks, decreased motor scale scores at 30-36 weeks, and decreased verbal scale scores at 37-38 weeks. Estimated cumulative effects (CE) of PM2.5 across pregnancy showed significant associations with general cognitive index (C E ^ = -0.35, 95% confidence interval [CI] = -0.68, -0.01), quantitative scale (C E ^ = -0.27, 95% CI = -0.74, -0.02), motor scale (C E ^ = -0.25, 95% CI = -0.44, -0.05), and verbal scale (C E ^ = -0.2, 95% CI = -0.43, -0.02). No significant sex interactions were observed. Conclusions Prenatal exposure to PM2.5, particularly late pregnancy, was inversely associated with subscales of MSCA. Using data-driven methods to identify sensitive window may provide insight into the mechanisms of neurodevelopmental impairment due to pollution.
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Affiliation(s)
- Hsiao-Hsien Leon Hsu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Jamil M. Lane
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Brent A. Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts
| | | | - Yueh-Hsiu Mathilda Chiu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ander Wilson
- Department of Biostatistics, Colorado State University, Fort Collins, Colorado
| | - Allan C. Just
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Itai Kloog
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Israel
| | - David Bellinger
- Department of Neurology,Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
- National Institute of Public Health, Cuernavaca, Mexico
| | | | - Robert O. Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
- Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, New York
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8
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van Slobbe M, van Haeringen A, Vissers LELM, Bijlsma EK, Rutten JW, Suerink M, Nibbeling EAR, Ruivenkamp CAL, Koene S. Reanalysis of whole-exome sequencing (WES) data of children with neurodevelopmental disorders in a standard patient care context. Eur J Pediatr 2024; 183:345-355. [PMID: 37889289 PMCID: PMC10858114 DOI: 10.1007/s00431-023-05279-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/20/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023]
Abstract
This study aims to inform future genetic reanalysis management by evaluating the yield of whole-exome sequencing (WES) reanalysis in standard patient care in the Netherlands. Single-center data of 159 patients with a neurodevelopmental disorder (NDD), in which WES analysis and reanalysis were performed between January 1, 2014, and December 31, 2021, was retrospectively collected. Patients were included if they were under the age of 18 years at initial analysis and if this initial analysis did not result in a diagnosis. Demographic, phenotypic, and genotypic characteristics of patients were collected and analyzed. The primary outcomes of our study were (i) diagnostic yield at reanalysis, (ii) reasons for detecting a new possibly causal variant at reanalysis, (iii) unsolicited findings, and (iv) factors associated with positive result of reanalysis. In addition, we conducted a questionnaire study amongst the 7 genetic department in the Netherlands creating an overview of used techniques, yield, and organization of WES reanalysis. The single-center data show that in most cases, WES reanalysis was initiated by the clinical geneticist (65%) or treating physician (30%). The mean time between initial WES analysis and reanalysis was 3.7 years. A new (likely) pathogenic variant or VUS with a clear link to the phenotype was found in 20 initially negative cases, resulting in a diagnostic yield of 12.6%. In 75% of these patients, the diagnosis had clinical consequences, as for example, a screening plan for associated signs and symptoms could be devised. Most (32%) of the (likely) causal variants identified at WES reanalysis were discovered due to a newly described gene-disease association. In addition to the 12.6% diagnostic yield based on new diagnoses, reclassification of a variant of uncertain significance found at initial analysis led to a definite diagnosis in three patients. Diagnostic yield was higher in patients with dysmorphic features compared to patients without clear dysmorphic features (yield 27% vs. 6%; p = 0.001). CONCLUSIONS Our results show that WES reanalysis in patients with NDD in standard patient care leads to a substantial increase in genetic diagnoses. In the majority of newly diagnosed patients, the diagnosis had clinical consequences. Knowledge about the clinical impact of WES reanalysis, clinical characteristics associated with higher yield, and the yield per year after a negative WES in larger clinical cohorts is warranted to inform guidelines for genetic reanalysis. These guidelines will be of great value for pediatricians, pediatric rehabilitation specialists, and pediatric neurologists in daily care of patients with NDD. WHAT IS KNOWN • Whole exome sequencing can cost-effectively identify a genetic cause of intellectual disability in about 30-40% of patients. • WES reanalysis in a research setting can lead to a definitive diagnosis in 10-20% of previously exome negative cases. WHAT IS NEW • WES reanalysis in standard patient care resulted in a diagnostic yield of 13% in previously exome negative children with NDD. • The presence of dysmorphic features is associated with an increased diagnostic yield of WES reanalysis.
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Affiliation(s)
- Michelle van Slobbe
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Arie van Haeringen
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Lisenka E L M Vissers
- Department of Human Genetics, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Emilia K Bijlsma
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Julie W Rutten
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Manon Suerink
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Esther A R Nibbeling
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Claudia A L Ruivenkamp
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands
| | - Saskia Koene
- Department of Clinical Genetics, Leiden University Medical Centre, Leiden, The Netherlands.
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9
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Müller AR, van Silfhout NY, den Hollander B, Kampman DHC, Bakkum L, Brands MMMG, Haverman L, Terwee CB, Schuengel C, Daams J, Hessl D, Wijburg FA, Boot E, van Eeghen AM. Navigating the outcome maze: a scoping review of outcomes and instruments in clinical trials in genetic neurodevelopmental disorders and intellectual disability. THERAPEUTIC ADVANCES IN RARE DISEASE 2024; 5:26330040241245721. [PMID: 38681798 PMCID: PMC11047260 DOI: 10.1177/26330040241245721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 03/14/2024] [Indexed: 05/01/2024]
Abstract
Background Individuals with genetic neurodevelopmental disorders (GNDs) or intellectual disability (ID) are often affected by complex neuropsychiatric comorbidities. Targeted treatments are increasingly available, but due to the heterogeneity of these patient populations, choosing a key outcome and corresponding outcome measurement instrument remains challenging. Objectives The aim of this scoping review was to describe the research on outcomes and instruments used in clinical trials in GNDs and ID. Eligibility criteria Clinical trials in individuals with GNDs and ID for any intervention over the past 10 years were included in the review. Sources of evidence MEDLINE, PsycINFO, and Cochrane CENTRAL were searched. Titles and abstracts were independently screened for eligibility with a subsample of 10% double-screening for interrater reliability. Data from full texts were independently reviewed. Discrepancies were discussed until consensus was reached. Charting methods Information was recorded on patient populations, interventions, designs, outcomes, measurement instruments, and type of reporter when applicable. Qualitative and descriptive analyses were performed. Results We included 312 studies reporting 91 different outcomes, with cognitive function most frequently measured (28%). Various outcome measurement instruments (n = 457) were used, with 288 in only a single clinical trial. There were 18 genetic condition-specific instruments and 16 measures were designed ad-hoc for one particular trial. Types of report included proxy-report (39%), self-report (22%), clinician-report (16%), observer-report (6%), self-assisted report (1%), or unknown (16%). Conclusion This scoping review of current practice reveals a myriad of outcomes and outcome measurement instruments for clinical trials in GNDs and ID. This complicates generalization, evidence synthesis, and evaluation. It underlines the need for consensus on suitability, validity, and relevancy of instruments, ultimately resulting in a core outcome set. A series of steps is proposed to move from the myriad of measures to a more unified approach.
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Affiliation(s)
- Annelieke R. Müller
- Department of Pediatrics, Emma Children’s Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- Advisium, ’s Heeren Loo, Amersfoort, Utrecht, The Netherlands
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, The Netherlands
| | - Nadia Y. van Silfhout
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development, Child Development, Amsterdam, The Netherlands
- Emma Children’s Hospital, Child and Adolescent Psychiatry & Psychosocial Care, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
| | - Bibiche den Hollander
- Department of Pediatrics, Emma Children’s Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, The Netherlands
- United for Metabolic Diseases, Amsterdam, The Netherlands
| | - Dick H. C. Kampman
- Faculty of Science, Operational Management, ICT Department, Utrecht University, Utrecht, The Netherlands
| | - Lianne Bakkum
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- Department of Clinical Child and Family Studies, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Marion M. M. G. Brands
- Department of Pediatrics, Emma Children’s Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development, Child Development, Amsterdam, The Netherlands
- United for Metabolic Diseases, Amsterdam, The Netherlands
| | - Lotte Haverman
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development, Child Development, Amsterdam, The Netherlands
- Emma Children’s Hospital, Child and Adolescent Psychiatry & Psychosocial Care, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
| | - Caroline B. Terwee
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- Epidemiology and Data Science, Amsterdam UMC Location Vrije Universiteit, Amsterdam, The Netherlands
| | - Carlo Schuengel
- Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- Department of Clinical Child and Family Studies, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Joost Daams
- Medical Library, Research Support, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
| | - David Hessl
- MIND Institute and Department of Psychiatry and Behavioral Sciences, University of California Davis, Sacramento, CA, USA
| | - Frits A. Wijburg
- Department of Pediatrics, Emma Children’s Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
| | - Erik Boot
- Advisium, ’s Heeren Loo, Amersfoort, Utrecht, The Netherlands
- The Dalglish Family 22q Clinic, Toronto, ON, Canada
- Department of Psychiatry & Neuropsychology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Agnies M. van Eeghen
- Emma Center for Personalized Medicine, Amsterdam UMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
- Advisium, ’s Heeren Loo, Berkenweg 11, 3818 LA, Amersfoort, The Netherlands
- Amsterdam Public Health Research Institute, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development, Child Development, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
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Rafat K, Abdel-Hamid MS, Abdel-Salam GM. Dandy-Walker Malformation in a Girl with DDX3X-Related Intellectual Disability. Mol Syndromol 2023; 14:523-529. [PMID: 38058759 PMCID: PMC10697763 DOI: 10.1159/000531715] [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: 05/10/2023] [Accepted: 06/21/2023] [Indexed: 12/08/2023] Open
Abstract
Introduction We report on a 4-year-old female patient who presented with severe intellectual disability, autistic features, hyperlaxity of joints, and progressive scoliosis. Whole-exome sequencing identified a de novo missense variant (c.976C>T; p.Arg326Cys) in DDX3X. Case Presentation The girl was born with congenital diaphragmatic hernia a finding which had not previously been associated with variants in DDX3X. Her brain MRI showed hypogenesis of corpus callosum, ventriculomegaly, frontal and perisylvian polymicrogyria, and hypoplastic pons in addition to Dandy-Walker malformation. Conclusion Our results confirmed the phenotype and genotype correlation of missense variants and the polymicrogyria. Moreover, it further expands the knowledge of the phenotypic and molecular features of DDX3X-related intellectual disability.
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Affiliation(s)
- Karima Rafat
- Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - Mohamed S. Abdel-Hamid
- Medical Molecular Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - Ghada M.H. Abdel-Salam
- Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
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11
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Lin IH, Tseng YC, Lai DC. Trends in the prevalence of intellectual disability among children in Taiwan. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2023; 67:1227-1236. [PMID: 36478619 DOI: 10.1111/jir.12998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Intellectual disability (ID) is a major developmental disability. However, data on changes in the prevalence over time at the national level are limited. METHOD Using data from the national disability registry, we conducted an ecological study to evaluate the time trends of ID among children in Taiwan. We calculated the prevalence of ID by age, sex and severity, from 2000 to 2011, and assessed the time trends. RESULTS During the study period, the overall prevalence of ID in children aged 3-17 years increased from 3.60 to 5.91 per 1000 (β = 0.22, P < 0.001, r2 = 0.97). The prevalence of mild ID (MID, intelligence quotient: 50-69) increased from 1.30 to 3.60 per 1000 (β = 0.21, P < 0.001, r2 = 0.98). However, the prevalence of severe ID (SID, intelligence quotient: <50) was relatively constant, between 2.22 and 2.38 per 1000 (β = 0.01, P = 0.076, r2 = 0.96). Boys had a higher prevalence than girls, and the average boy-to-girl prevalence ratio was 1.42 for MID and 1.31 for SID. The boy-to-girl prevalence ratios of MID and SID decreased over time (β = -0.01, P < 0.001, r2 = 0.99 for MID; β = -0.01, P < 0.001, r2 = 1.00 for SID). CONCLUSION The prevalence of ID in Taiwanese children increased from 2000 to 2011 and was largely attributable to increases in MID. Boys had a higher prevalence of ID and were more likely to have MID.
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Affiliation(s)
- I-H Lin
- Department of Physical Medicine and Rehabilitation, Ditmanson Medical Foundation, Chia-Yi Christian Hospital, Chia-Yi, Taiwan
| | - Y-C Tseng
- Language Education Center and Department of Tourism, Food, and Beverage Management, Chang Jung Christian University, Tainan, Taiwan
| | - D-C Lai
- Department of Physical Medicine and Rehabilitation, Ditmanson Medical Foundation, Chia-Yi Christian Hospital, Chia-Yi, Taiwan
- Department of Nursing, Chung-Jen Junior College of Nursing, Health Sciences and Management, Chia-Yi, Taiwan
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12
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Uctepe E, Yesilyurt A, Esen FN, Tumer S, Mancilar H, Sonmez FM. TRAPPC9-Related Intellectual Disability: Report of Two New Cases and Review of the Literature. Mol Syndromol 2023; 14:485-492. [PMID: 38058760 PMCID: PMC10697769 DOI: 10.1159/000531439] [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: 03/18/2023] [Accepted: 06/05/2023] [Indexed: 12/08/2023] Open
Abstract
Introduction Hereditary forms of intellectual disability (ID), an estimated prevalence ranging between 1% and 3% in the general population, are among the most important problems in health care. Especially, autosomal-recessive ID has a very heterogeneous molecular basis and a lack of specific phenotypic features. Methods Here, we report on two unrelated patients with autosomal-recessive ID, microcephaly, and autistic features and review the patients with TRAPPC9-related ID. Whole-exome sequencing and array CGH were performed for molecular diagnosis of the patients. Results The first case has a microdeletion on chromosome 8q24.23-q24.3 region which is 1.7 Mb in length and includes the last 5 exons of TRAPPC9, and c.3435delG [p.Thr1146Profs*8] deletion. The second case has a homozygous missense c.623A>C (p.His208Pro) variant in TRAPPC9 which is detected by means of whole-exome sequencing study of the proband. We also reviewed the clinical findings and mutation spectrum of all patients with TRAPPC9-related ID reported so far. Conclusions Our study showed that the most consistent clinical findings for TRAPPC9-related ID are ID, microcephaly, and some structural brain MRI abnormalities. The mutations in the TRAPPC9 are scattered throughout all exons of TRAPPC9 indicating there is no hot spot mutation region in this gene.
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Affiliation(s)
- Eyyup Uctepe
- Acibadem Ankara Tissue Typing Laboratory, Ankara, Turkey
| | - Ahmet Yesilyurt
- Acibadem Labgen Genetic Diagnosis Center, Istanbul, Turkey
- Acibadem Maslak Hospital, Istanbul, Turkey
| | | | - Sait Tumer
- Acibadem Labgen Genetic Diagnosis Center, Istanbul, Turkey
| | | | - Fatma Mujgan Sonmez
- Karadeniz Technical University Faculty of Medicine, Department of Child Neurology, Ankara, Turkey
- Private office, Child Neurology, Ankara, Turkey
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13
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Verkhratsky A, Butt A, Li B, Illes P, Zorec R, Semyanov A, Tang Y, Sofroniew MV. Astrocytes in human central nervous system diseases: a frontier for new therapies. Signal Transduct Target Ther 2023; 8:396. [PMID: 37828019 PMCID: PMC10570367 DOI: 10.1038/s41392-023-01628-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 10/14/2023] Open
Abstract
Astroglia are a broad class of neural parenchymal cells primarily dedicated to homoeostasis and defence of the central nervous system (CNS). Astroglia contribute to the pathophysiology of all neurological and neuropsychiatric disorders in ways that can be either beneficial or detrimental to disorder outcome. Pathophysiological changes in astroglia can be primary or secondary and can result in gain or loss of functions. Astroglia respond to external, non-cell autonomous signals associated with any form of CNS pathology by undergoing complex and variable changes in their structure, molecular expression, and function. In addition, internally driven, cell autonomous changes of astroglial innate properties can lead to CNS pathologies. Astroglial pathophysiology is complex, with different pathophysiological cell states and cell phenotypes that are context-specific and vary with disorder, disorder-stage, comorbidities, age, and sex. Here, we classify astroglial pathophysiology into (i) reactive astrogliosis, (ii) astroglial atrophy with loss of function, (iii) astroglial degeneration and death, and (iv) astrocytopathies characterised by aberrant forms that drive disease. We review astroglial pathophysiology across the spectrum of human CNS diseases and disorders, including neurotrauma, stroke, neuroinfection, autoimmune attack and epilepsy, as well as neurodevelopmental, neurodegenerative, metabolic and neuropsychiatric disorders. Characterising cellular and molecular mechanisms of astroglial pathophysiology represents a new frontier to identify novel therapeutic strategies.
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Affiliation(s)
- Alexei Verkhratsky
- International Joint Research Centre on Purinergic Signalling/School of Health and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
- Department of Forensic Analytical Toxicology, School of Forensic Medicine, China Medical University, Shenyang, China.
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.
- Achucarro Centre for Neuroscience, IKERBASQUE, Basque Foundation for Science, Bilbao, Spain.
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, LT-01102, Vilnius, Lithuania.
| | - Arthur Butt
- Institute of Biomedical and Biomolecular Sciences, School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Baoman Li
- Department of Forensic Analytical Toxicology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Peter Illes
- International Joint Research Centre on Purinergic Signalling/School of Health and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Rudolf Boehm Institute for Pharmacology and Toxicology, University of Leipzig, 04109, Leipzig, Germany
| | - Robert Zorec
- Celica Biomedical, Lab Cell Engineering, Technology Park, 1000, Ljubljana, Slovenia
- Laboratory of Neuroendocrinology-Molecular Cell Physiology, Institute of Pathophysiology, University of Ljubljana, Faculty of Medicine, Ljubljana, Slovenia
| | - Alexey Semyanov
- Department of Physiology, Jiaxing University College of Medicine, 314033, Jiaxing, China
| | - Yong Tang
- International Joint Research Centre on Purinergic Signalling/School of Health and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
- Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education/Acupuncture and Chronobiology Key Laboratory of Sichuan Province, Chengdu, China.
| | - Michael V Sofroniew
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
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14
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Büyükçelik NM, Yiğit S, Turhan B. An investigation of the effects of dual-task balance exercises on balance, functional status and dual-task performance in children with Down syndrome. Dev Neurorehabil 2023; 26:320-327. [PMID: 37403442 DOI: 10.1080/17518423.2023.2233031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 06/30/2023] [Accepted: 07/01/2023] [Indexed: 07/06/2023]
Abstract
PURPOSE To investigate the effects of dual task (DT) balance exercises on functional status, balance, and DT performance in children with Down Syndrome (DS). METHODS Participants were divided into two groups: intervention group (IG; n = 13) and control group (CG;n = 14). WeeFIM was used to measure the functional independence level and balance was evaluated using the Pediatric Balance Scale. DT performance was assessed using Timed Up and Go, Single Leg Stance, Tandem-Stance and 30 s Sit to Stand tests without concomitant task, with motor task or cognitive task. The IG received 16 sessions of DT training twice a week for 8 weeks. RESULTS Functional level, balance, and DT performance improved significantly in the IG, whereas only balance improved in the CG. Significantly better results were achieved in the IG, as demonstrated by greater pre/post-treatment changes. CONCLUSION DT balance exercises improved functional level, balance and DT performance of children with DS.
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Affiliation(s)
- Neslinur Merve Büyükçelik
- Institute of Graduate Programs, Department of Physiotherapy and Rehabilitation, Hasan Kalyoncu University, Gaziantep, Turkey
| | - Sedat Yiğit
- Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Gaziantep University, Gaziantep, Turkey
| | - Begümhan Turhan
- Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Hasan Kalyoncu University, Gaziantep, Turkey
- Faculty of Medicine, Department of Anatomy, Baskent University, Ankara, Turkey
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15
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Aksović N, Dobrescu T, Bubanj S, Bjelica B, Milanović F, Kocić M, Zelenović M, Radenković M, Nurkić F, Nikolić D, Marković J, Tomović M, Vulpe AM. Sports Games and Motor Skills in Children, Adolescents and Youth with Intellectual Disabilities. CHILDREN (BASEL, SWITZERLAND) 2023; 10:912. [PMID: 37371144 DOI: 10.3390/children10060912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/14/2023] [Accepted: 05/18/2023] [Indexed: 06/29/2023]
Abstract
(1) Background: Sports games are one of the best ways of engaging in physical activity for individuals with intellectual disabilities (ID) and Down syndrome (DS). This systematic review of the current literature aims to identify and sum relevant data on motor skills and clarify whether there are positive effects of sports programs in motor skills games in children, adolescents, and youth with ID and DS. (2) Methods: The systematic review of the papers was carried out following the methodological guidelines and by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) consensus. The following electronic databases were researched: PubMed, MEDLINE, Google Scholar, ScienceDirect, and ERIC from 2001 to 2023. (3) Results: The basketball test battery can be used to improve and monitor basketball training. Basketball players with lower levels of ID achieved better results, especially those with disabilities of the II and III degrees. Futsal has a positive impact on the coordination, and the differences between the test results of the vertical jump with and without an arm swing, that can be seen indirectly as a coordination factor, were statistically significant. (4) Conclusions: Basketball is recommended as an effective and practical rehabilitation program for children, adolescents, and youth with ID and DS. Futsal is an interesting and helpful activity for individuals with ID as well.
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Affiliation(s)
- Nikola Aksović
- Faculty of Sport and Physical Education, University of Priština, 38218 Priština, Serbia
| | - Tatiana Dobrescu
- Department of Physical Education and Sport Performance, Vasile Alecsandri University, 600115 Bacau, Romania
| | - Saša Bubanj
- Faculty of Sport and Physical Education, University of Niš, 18000 Niš, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Bojan Bjelica
- Faculty of Physical Education and Sports, University of East Sarajevo, 71126 Lukavica, Bosnia and Herzegovina
| | | | - Miodrag Kocić
- Faculty of Sport and Physical Education, University of Niš, 18000 Niš, Serbia
| | - Milan Zelenović
- Faculty of Physical Education and Sports, University of East Sarajevo, 71126 Lukavica, Bosnia and Herzegovina
| | - Marko Radenković
- Faculty of Sport and Physical Education, University of Niš, 18000 Niš, Serbia
| | - Filip Nurkić
- Faculty of Sport and Physical Education, University of Niš, 18000 Niš, Serbia
| | - Dejan Nikolić
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Jovan Marković
- Faculty of Pedagogy, University of Kragujevac, 31000 Užice, Serbia
| | - Milena Tomović
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ana-Maria Vulpe
- Department of Physical Education and Sport Performance, Vasile Alecsandri University, 600115 Bacau, Romania
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Zare Ashrafi F, Akhtarkhavari T, Fattahi Z, Asadnezhad M, Beheshtian M, Arzhangi S, Najmabadi H, Kahrizi K. Emerging Epidemiological Data on Rare Intellectual Disability Syndromes from Analyzing the Data of a Large Iranian Cohort. ARCHIVES OF IRANIAN MEDICINE 2023; 26:186-197. [PMID: 38301078 PMCID: PMC10685746 DOI: 10.34172/aim.2023.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 02/25/2023] [Indexed: 02/03/2024]
Abstract
BACKGROUND Intellectual disability (ID) is a genetically heterogeneous condition, and so far, 1679 human genes have been identified for this phenotype. Countries with a high rate of parental consanguinity, such as Iran, provide an excellent opportunity to identify the remaining novel ID genes, especially those with an autosomal recessive (AR) mode of inheritance. This study aimed to investigate the most prevalent ID genes identified via next-generation sequencing (NGS) in a large ID cohort at the Genetics Research Center (GRC) of the University of Social Welfare and Rehabilitation Sciences. METHODS First, we surveyed the epidemiological data of 619 of 1295 families in our ID cohort, who referred to the Genetics Research Center from all over the country between 2004 and 2021 for genetic investigation via the NGS pipeline. We then compared our data with those of several prominent studies conducted in consanguineous countries. Data analysis, including cohort data extraction, categorization, and comparison, was performed using the R program version 4.1.2. RESULTS We categorized the most common ID genes that were mutated in more than two families into 17 categories. The most common syndromic ID in our cohort was AP4 deficiency syndrome, and the most common non-syndromic autosomal recessive intellectual disability (ARID) gene was ASPM. We identified two unrelated families for the 36 ID genes. We found 14 genes in common between our cohort and the Arab and Pakistani groups, of which three genes (AP4M1, AP4S1, and ADGRG1) were repeated more than once. CONCLUSION To date, there has been no comprehensive targeted NGS platform for the detection of ID genes in our country. Due to the large sample size of our study, our data may provide the initial step toward designing an indigenously targeted NGS platform for the diagnosis of ID, especially common ARID in our population.
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Affiliation(s)
- Farzane Zare Ashrafi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Tara Akhtarkhavari
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Zohreh Fattahi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Maryam Asadnezhad
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Maryam Beheshtian
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Sanaz Arzhangi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Kimia Kahrizi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
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Bustos F, Findlay GM. Therapeutic validation and targeting of signalling networks that are dysregulated in intellectual disability. FEBS J 2023; 290:1454-1460. [PMID: 35212144 PMCID: PMC10952735 DOI: 10.1111/febs.16411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/14/2022] [Accepted: 02/22/2022] [Indexed: 11/28/2022]
Abstract
Intellectual disability (ID) represents a major burden on healthcare systems in the developed world. However, there is a disconnect between our knowledge of genes that are mutated in ID and our understanding of the underpinning molecular mechanisms that cause these disorders. We argue that elucidating the signalling and transcriptional networks that are dysregulated in patients will afford new therapeutic opportunities.
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Affiliation(s)
- Francisco Bustos
- Pediatrics and Rare Diseases GroupSanford ResearchSioux FallsSDUSA
- Department of PediatricsSanford School of MedicineUniversity of South DakotaSioux FallsSDUSA
| | - Greg M. Findlay
- The MRC Protein Phosphorylation & Ubiquitylation UnitSchool of Life SciencesThe University of DundeeDundeeUK
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18
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Muacevic A, Adler JR, Verma R, Shah SD, Vattikuti B, Khan AZ, Shahzadi A, Abdi P, Anthony M, Farkouh CS, Farkouh M, Santiago N, Zepeda D, Nunez A. Non-syndromic Intellectual Disability: An Experimental In-Depth Exploration of Inheritance Pattern, Phenotypic Presentation, and Genomic Composition. Cureus 2023; 15:e34085. [PMID: 36843831 PMCID: PMC9946902 DOI: 10.7759/cureus.34085] [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] [Accepted: 01/23/2023] [Indexed: 01/25/2023] Open
Abstract
Background Intellectual disability (ID), also termed mental retardation (MR), is a neurodevelopmental disorder characterized by an intelligence quotient (IQ) of 70 or below and a deficit in at least two behaviors associated with adaptive functioning. The condition is further classified into syndromic intellectual disability (S-ID) and non-syndromic intellectual disability (NS-ID). This study highlights the genes associated with NS-ID. Objectives A genetic study was performed on two Pakistani families to know the inheritance patterns, clinical phenotypes, and molecular genetics of affected individuals with NS-ID. Methodology Samples were collected from two families: families A and B. All affected individuals in both families were diagnosed by a neurologist. Written informed consent was taken from the affected individuals and guardians before collecting the data and sample. Family A belongs to the Swabi District of Pakistan having four affected individuals, out of whom three were male and one was female. Family B also belongs to the Swabi District of Pakistan having two affected individuals, out of whom one was male and one was female. A total of 10 candidate genes were selected and were further screened by microarray analysis. Results In family A, this analysis identified a region of 9.6 Mb on chromosome 17q11.2-q12 between the single nucleotide polymorphisms (SNPs) rs953527 and rs2680398. The region was genotyped using microsatellite markers to confirm the haplotypes in all family members. Based on the phenotype-genotype relationship, 10 possible candidate genes were selected out of more than 140 genes in this critical region of 9.6 Mb. In family B, homozygosity mapping through microarray identified four homozygous areas of affected individuals: two (27,324,822-59,122,062 and 96,423,252123,656,241) on chromosome 8, one (14,785,224-19,722,760) on chromosome 9, and one (126173647-126215644) on chromosome 11. Conclusion An autosomal recessive pattern was found in the pedigrees of both families A and B. Phenotypically affected individuals showed IQ levels below 70. Three genes, CDK5R1, OMG, and EV12A, were found on chromosome 17q11.2-q12 region of affected individuals in family A with high expression in the frontal cortex of the brain, hippocampus, and spinal cord, respectively. Other regions on chromosomes 8, 9, and 11 as evident from the affected individuals in family B can also contribute to the non-syndromic autosomal recessive intellectual disability (NS-ARID). Further research is needed to find the association of these genes with intelligence and other neuropsychiatric conditions.
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19
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Whole-Exome Sequencing of Pakistani Consanguineous Families Identified Pathogenic Variants in Genes of Intellectual Disability. Genes (Basel) 2022; 14:genes14010048. [PMID: 36672789 PMCID: PMC9858807 DOI: 10.3390/genes14010048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/01/2022] [Accepted: 12/16/2022] [Indexed: 12/28/2022] Open
Abstract
Intellectual disability (ID) is a condition of significant limitation of cognitive functioning and adaptive behavior, with 50% of etiology attributed to genetic predisposition. We recruited two consanguineous Pakistani families manifesting severe ID and developmental delay. The probands were subjected to whole exome sequencing (WES) and variants were further prioritized based on population frequency, predicted pathogenicity and functional relevance. The WES data analysis identified homozygous pathogenic variants in genes MBOAT7 and TRAPPC9. The pathogenicity of the variants was supported by co-segregation analysis and in silico tool. The findings of this study expand mutation spectrum and provide additional evidence to the role of MBOAT7 and TRAPPC9 in causation of ID.
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20
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Wenzel DM, Olivier-Van Stichelen S. The O-GlcNAc cycling in neurodevelopment and associated diseases. Biochem Soc Trans 2022; 50:1693-1702. [PMID: 36383066 PMCID: PMC10462390 DOI: 10.1042/bst20220539] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 11/18/2022]
Abstract
Proper neuronal development is essential to growth and adult brain function. Alterations at any step of this highly organized sequence of events, due to genetic mutations or environmental factors, triggers brain malformations, which are leading causes of diseases including epilepsy, intellectual disabilities, and many others. The role of glycosylation in neuronal development has been emphasized for many years, notably in studying human congenital disorders of glycosylation (CDGs). These diseases highlight that genetic defects in glycosylation pathways are almost always associated with severe neurological abnormalities, suggesting that glycosylation plays an essential role in early brain development. Congenital disorders of O-GlcNAcylation are no exception, and all mutations of the O-GlcNAc transferase (OGT) are associated with X-linked intellectual disabilities (XLID). In addition, mouse models and in vitro mechanistic studies have reinforced the essential role of O-GlcNAcylation in neuronal development and signaling. In this review, we give an overview of the role of O-GlcNAcylation in this critical physiological process and emphasize the consequences of its dysregulation.
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Affiliation(s)
- Dawn M Wenzel
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, U.S.A
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21
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Differential diagnosis between autism spectrum disorder and other developmental disorders with emphasis on the preschool period. World J Pediatr 2022:10.1007/s12519-022-00629-y. [PMID: 36282408 DOI: 10.1007/s12519-022-00629-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 09/27/2022] [Indexed: 10/31/2022]
Abstract
BACKGROUND Neurodevelopmental disorders are a heterogeneous group of conditions that manifest as delays or deviations in the acquisition of expected developmental milestones and behavioral changes. Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in communication and social interaction and by repetitive and restricted patterns of behavior, interests and activities. The aim of this review is to discuss the clinical features of the differential diagnoses of ASD that are prevalent among preschoolers, focusing on their similarities and disparities. DATA SOURCES The international medical literature search was conducted using PubMed and was revised regarding the subject using single and/or combined keywords as follows: differential diagnosis, preschoolers, diagnostic challenge, attention deficit hyperactivity disorder, intellectual disability, high abilities/giftedness, childhood apraxia of speech, social communication disorder, Landau-Kleffner syndrome, stereotyped movement disorder and excessive screen time. RESULTS We describe conditions commonly found in clinical practice, taking ASD as a reference. We addressed converging and divergent aspects of behavior, cognition, communication, language, speech, socialization, and stereotypes for the diagnosis of ASD and other disorders identified as potential differential or comorbid diagnoses. CONCLUSIONS The ranking and characterization of symptoms appear to be essential for better understanding the underlying common ground between children with developmental disorders and children with ASD, thus properly diagnosing and directing social, professional, or medication interventions. This detailed discussion adds to the literature since, although ASD differential diagnoses are frequently mentioned and discussed in textbooks and journal articles, they rarely occupy a prominent place as we aimed herein.
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22
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Rafiullah R, Albalawi AM, Alaradi SR, Alluqmani M, Mushtaq M, Wali A, Basit S. An expansion of phenotype: novel homozygous variant in the MED17 identified in patients with progressive microcephaly and global developmental delay. J Neurogenet 2022; 36:108-114. [PMID: 36508181 DOI: 10.1080/01677063.2022.2149748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Global developmental delay (GDD) is a lifelong disability that affects 1-3% of the population around the globe. It is phenotypically variable and highly heterogeneous in terms of the underlying genetics. Patients with GDD are intellectually disabled (ID) manifesting cognitive impairment and deficient adaptive behavior. Here, we investigated a two-looped consanguineous family segregating severe ID, seizure, and progressive microcephaly. Magnetic resonance imaging (MRI) of the brain showed mild brain atrophy and myelination defect. Whole exome sequencing (WES) was performed on the DNA samples of two patients and a novel homozygous missense variant (Chr11:g0.93528085; NM_004268.5_c.871T > C; p. Trp291Gly) was identified in the MED17 gene. Sanger sequencing revealed that the identified variant is heterozygous in both parents and healthy siblings. This variant is conserved among different species, causes a non-conserved amino acid change, and is predicted deleterious by various in silico tools. The variant is not reported in population variant databases. MED17 (OMIM: 613668) encodes for the mediator of RNA polymerase II transcription complex subunit 17. Structure modeling of MED17 protein revealed that Trp291 is involved in different inter-helical interactions, providing structural stability. Replacement of Trp291Gly, a less hydrophobic amino acid loses the inter-helical interaction leading to a perturb variant of MED17 protein.
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Affiliation(s)
- Rafiullah Rafiullah
- Department of Biotechnology, Faculty of Life Sciences & Informatics, BUITEMS, Quetta, Pakistan
| | - Alia M Albalawi
- Center for Genetics and Inherited Diseases, Taibah University, Madinah, Saudi Arabia
| | - Sultan R Alaradi
- Department of Laboratory and Blood Bank, Alwajh General Hospital, Ministry of Health, Alwajh, Saudi Arabia
| | - Majed Alluqmani
- College of Medicine, Taibah University, Madinah, Saudi Arabia
| | - Muhammad Mushtaq
- Department of Biotechnology, Faculty of Life Sciences & Informatics, BUITEMS, Quetta, Pakistan
| | - Abdul Wali
- Department of Biotechnology, Faculty of Life Sciences & Informatics, BUITEMS, Quetta, Pakistan
| | - Sulman Basit
- Center for Genetics and Inherited Diseases, Taibah University, Madinah, Saudi Arabia.,Department of Biochemistry and Molecular Medicine, College of Medicine, Taibah University, Madinah, Saudi Arabia
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23
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Boonsawat P, Horn AHC, Steindl K, Baumer A, Joset P, Kraemer D, Bahr A, Ivanovski I, Cabello EM, Papik M, Zweier M, Oneda B, Sirleto P, Burkhardt T, Sticht H, Rauch A. Assessing clinical utility of preconception expanded carrier screening regarding residual risk for neurodevelopmental disorders. NPJ Genom Med 2022; 7:45. [PMID: 35906228 PMCID: PMC9338263 DOI: 10.1038/s41525-022-00316-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 07/15/2022] [Indexed: 11/10/2022] Open
Abstract
The magnitude of clinical utility of preconception expanded carrier screening (ECS) concerning its potential to reduce the risk of affected offspring is unknown. Since neurodevelopmental disorders (NDDs) in their offspring is a major concern of parents-to-be, we addressed the question of residual risk by assessing the risk-reduction potential for NDDs in a retrospective study investigating ECS with different criteria for gene selection and definition of pathogenicity. We used exome sequencing data from 700 parents of children with NDDs and blindly screened for carrier-alleles in up to 3046 recessive/X-linked genes. Depending on variant pathogenicity thresholds and gene content, NDD-risk-reduction potential was up to 43.5% in consanguineous, and 5.1% in nonconsanguineous couples. The risk-reduction-potential was compromised by underestimation of pathogenicity of missense variants (false-negative-rate 4.6%), inherited copy-number variants and compound heterozygosity of one inherited and one de novo variant (0.9% each). Adherence to the ACMG recommendations of restricting ECS to high-frequency genes in nonconsanguineous couples would more than halve the detectable inherited NDD-risk. Thus, for optimized clinical utility of ECS, screening in recessive/X-linked genes regardless of their frequency (ACMG Tier-4) and sensible pathogenicity thresholds should be considered for all couples seeking ECS.
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Affiliation(s)
| | - Anselm H C Horn
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland.,Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Katharina Steindl
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Alessandra Baumer
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Pascal Joset
- Medical Genetics, University Hospital Basel, Basel, Switzerland
| | - Dennis Kraemer
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Angela Bahr
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Ivan Ivanovski
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Elena M Cabello
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Michael Papik
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Markus Zweier
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Beatrice Oneda
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Pietro Sirleto
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Tilo Burkhardt
- University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Heinrich Sticht
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Anita Rauch
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland. .,University Children's Hospital Zurich, University of Zurich, Zurich, Switzerland.
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24
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Complex Diagnostics of Non-Specific Intellectual Developmental Disorder. Int J Mol Sci 2022; 23:ijms23147764. [PMID: 35887114 PMCID: PMC9323143 DOI: 10.3390/ijms23147764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 11/17/2022] Open
Abstract
Intellectual development disorder (IDD) is characterized by a general deficit in intellectual and adaptive functioning. In recent years, there has been a growing interest in studying the genetic structure of IDD. Of particular difficulty are patients with non-specific IDD, for whom it is impossible to establish a clinical diagnosis without complex genetic diagnostics. We examined 198 patients with non-specific IDD from 171 families using whole-exome sequencing and chromosome microarray analysis. Hereditary forms of IDD account for at least 35.7% of non-specific IDD, of which 26.9% are monogenic forms. Variants in the genes associated with the BAF (SWI/SNF) complex were the most frequently identified. We were unable to identify phenotypic features that would allow differential diagnosis of monogenic and microstructural chromosomal rearrangements in non-specific IDD at the stage of clinical examination, but due to its higher efficiency, exome sequencing should be the diagnostic method of the highest priority study after the standard examination of patients with NIDD in Russia.
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25
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Ismail V, Zachariassen LG, Godwin A, Sahakian M, Ellard S, Stals KL, Baple E, Brown KT, Foulds N, Wheway G, Parker MO, Lyngby SM, Pedersen MG, Desir J, Bayat A, Musgaard M, Guille M, Kristensen AS, Baralle D. Identification and functional evaluation of GRIA1 missense and truncation variants in individuals with ID: An emerging neurodevelopmental syndrome. Am J Hum Genet 2022; 109:1217-1241. [PMID: 35675825 PMCID: PMC9300760 DOI: 10.1016/j.ajhg.2022.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/11/2022] [Indexed: 12/02/2022] Open
Abstract
GRIA1 encodes the GluA1 subunit of α-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptors, which are ligand-gated ion channels that act as excitatory receptors for the neurotransmitter L-glutamate (Glu). AMPA receptors (AMPARs) are homo- or heteromeric protein complexes with four subunits, each encoded by different genes, GRIA1 to GRIA4. Although GluA1-containing AMPARs have a crucial role in brain function, the human phenotype associated with deleterious GRIA1 sequence variants has not been established. Subjects with de novo missense and nonsense GRIA1 variants were identified through international collaboration. Detailed phenotypic and genetic assessments of the subjects were carried out and the pathogenicity of the variants was evaluated in vitro to characterize changes in AMPAR function and expression. In addition, two Xenopus gria1 CRISPR-Cas9 F0 models were established to characterize the in vivo consequences. Seven unrelated individuals with rare GRIA1 variants were identified. One individual carried a homozygous nonsense variant (p.Arg377Ter), and six had heterozygous missense variations (p.Arg345Gln, p.Ala636Thr, p.Ile627Thr, and p.Gly745Asp), of which the p.Ala636Thr variant was recurrent in three individuals. The cohort revealed subjects to have a recurrent neurodevelopmental disorder mostly affecting cognition and speech. Functional evaluation of major GluA1-containing AMPAR subtypes carrying the GRIA1 variant mutations showed that three of the four missense variants profoundly perturb receptor function. The homozygous stop-gain variant completely destroys the expression of GluA1-containing AMPARs. The Xenopus gria1 models show transient motor deficits, an intermittent seizure phenotype, and a significant impairment to working memory in mutants. These data support a developmental disorder caused by both heterozygous and homozygous variants in GRIA1 affecting AMPAR function.
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Affiliation(s)
- Vardha Ismail
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Foundation Trust, Coxford Rd, Southampton SO165YA, UK
| | - Linda G Zachariassen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Annie Godwin
- European Xenopus Resource Centre, School of Biological Sciences, King Henry Building, King Henry I Street, Portsmouth PO1 2DY, UK
| | - Mane Sahakian
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Sian Ellard
- Exeter Genomics Laboratory, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter EX2 5DW, UK; University of Exeter Medical School, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter EX2 5DW, UK
| | - Karen L Stals
- Exeter Genomics Laboratory, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter EX2 5DW, UK
| | - Emma Baple
- Exeter Genomics Laboratory, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter EX2 5DW, UK; University of Exeter Medical School, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter EX2 5DW, UK
| | - Kate Tatton Brown
- South-West Thames Clinical Genetics Service, St George's University of London, Cranmer Terrace, London SW17 0RE, UK
| | - Nicola Foulds
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Foundation Trust, Coxford Rd, Southampton SO165YA, UK
| | - Gabrielle Wheway
- Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK
| | - Matthew O Parker
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Old St Michael's Building, White Swan Road, Portsmouth PO1 2DT, UK
| | - Signe M Lyngby
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Miriam G Pedersen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Julie Desir
- Département de Génétique Clinique - Institut de Pathologie et de Génétique, Institut de Pathologie et de Génétique, Avenue Georges Lemaître, 25 6041 Gosselies, Belgium
| | - Allan Bayat
- Danish Epilepsy Centre, Department of Epilepsy Genetics and Personalized Medicine, 4293 Dianalund, Denmark; Department of Regional Health Research, University of Southern Denmark, 5230 Odense, Denmark
| | - Maria Musgaard
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 75 Laurier Ave E, Ottawa, ON K1N 6N5, Canada
| | - Matthew Guille
- European Xenopus Resource Centre, School of Biological Sciences, King Henry Building, King Henry I Street, Portsmouth PO1 2DY, UK
| | - Anders S Kristensen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Diana Baralle
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Foundation Trust, Coxford Rd, Southampton SO165YA, UK; Faculty of Medicine, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK.
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26
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Catino G, Genovese S, Di Tommaso S, Orlando V, Petti MT, De Bernardi ML, Dallapiccola B, Novelli A, Ulgheri L, Piscopo C, Alesi V. Reciprocal Xp11.4p11.3 microdeletion/microduplication spanning USP9X, DDX3X, and CASK genes in two patients with syndromic intellectual disability. Am J Med Genet A 2022; 188:1836-1847. [PMID: 35238482 DOI: 10.1002/ajmg.a.62694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 12/13/2022]
Abstract
Only a few patients with deletions or duplications at Xp11.4, bridging USP9X, DDX3X, and CASK genes, have been described so far. Here, we report on a female harboring a de novo Xp11.4p11.3 deletion and a male with an overlapping duplication inherited from an unaffected mother, presenting with syndromic intellectual disability. We discuss the role of USP9X, DDX3X, and CASK genes in human development and describe the effects of Xp11.4 deletion and duplications in female and male patients, respectively.
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Affiliation(s)
- Giorgia Catino
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Silvia Genovese
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Silvia Di Tommaso
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Valeria Orlando
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Maria Teresa Petti
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, Naples, Italy
| | | | - Bruno Dallapiccola
- Genetics and Rare Disease Research Division, Bambino Gesu Children Hospital, IRCCS, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Lucia Ulgheri
- Department of Biomedical Sciences, Clinical Genetics Service, Azienda Ospedaliero-Universitaria, Sassari, Italy
| | - Carmelo Piscopo
- Department of Molecular Medicine and Medical Biotechnology, University Federico II, Naples, Italy
| | - Viola Alesi
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
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27
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Kim S. Worldwide national intervention of developmental screening programs in infant and early childhood. Clin Exp Pediatr 2022; 65:10-20. [PMID: 34592802 PMCID: PMC8743433 DOI: 10.3345/cep.2021.00248] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 07/26/2021] [Indexed: 11/27/2022] Open
Abstract
The prevalence of developmental disabilities is increasing worldwide over time. Developmental issues in infancy or early childhood may cause learning difficulties or behavioral problem in school age, further adversely affecting adolescent quality of life, which finally lead to low socioeconomic status in family, increase in medical expenses, and other relevant issues in various ways. Early childhood has brain plasticity, which means there is a high chance of recovering from developmental issues by early detection and timely intervention. Pediatricians are placed an ideal position to meet with young children till 6 years of age, of which age range is the time applicable to early intervention. Determining child’s developmental status can be made by 2 pathways such as developmental surveillance and developmental screening tests. For better results, pediatricians should update their knowledge about developmental issues, risk factors, and screening techniques through varying educational program or other relevant educating materials. This paper will update reports on the prevalence of developmental disabilities and review the recent results of the Korean developmental screening test and discuss relevant issues. Finally, it will be addressed the pediatrician’s role in early detecting developmental issues and timely intervention.
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Affiliation(s)
- Seunghyo Kim
- Department of Pediatrics, Jeju National University Hospital, Jeju, Korea
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28
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Leonard H, Montgomery A, Wolff B, Strumpher E, Masi A, Woolfenden S, Williams K, Eapen V, Finlay-Jones A, Whitehouse A, Symons M, Licari M, Varcin K, Alvares G, Evans K, Downs J, Glasson E. A systematic review of the biological, social, and environmental determinants of intellectual disability in children and adolescents. Front Psychiatry 2022; 13:926681. [PMID: 36090348 PMCID: PMC9453821 DOI: 10.3389/fpsyt.2022.926681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/27/2022] [Indexed: 11/24/2022] Open
Abstract
AIM This systematic review aimed to identify the most important social, environmental, biological, and/or genetic risk factors for intellectual disability (ID). METHODS Eligible were published prospective or retrospective comparative studies investigating risk factors for ID in children 4-18 years. Exclusions were single group studies with no comparator without ID and a sample size <100. Electronic databases (Medline, Cochrane Library, EMBASE, PsycInfo, Campbell Collaboration, and CINAHL) were searched for eligible publications from 1980 to 2020. Joanna Briggs Institute critical appraisal instruments, appropriate for study type, were used to assess study quality and risk of bias. Descriptive characteristics and individual study results were presented followed by the synthesis for individual risk factors, also assessed using GRADE. RESULTS Fifty-eight individual eligible studies were grouped into six exposure topics: sociodemographic; antenatal and perinatal; maternal physical health; maternal mental health; environmental; genetic or biological studies. There were few eligible genetic studies. For half the topics, the certainty of evidence (GRADE) was moderate or high. CONCLUSION Multiple studies have examined individual potential determinants of ID, but few have investigated holistically to identify those populations most at risk. Our review would indicate that there are vulnerable groups where risk factors we identified, such as low socioeconomic status, minority ethnicity, teenage motherhood, maternal mental illness, and alcohol abuse, may cluster, highlighting a target for preventive strategies. At-risk populations need to be identified and monitored so that interventions can be implemented when appropriate, at preconception, during pregnancy, or after birth. This could reduce the likelihood of ID and provide optimal opportunities for vulnerable infants. SYSTEMATIC REVIEW REGISTRATION [https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=120032], identifier [CRD42019120032].
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Affiliation(s)
- Helen Leonard
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Alicia Montgomery
- School of Clinical Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Brittany Wolff
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Elissa Strumpher
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Anne Masi
- School of Clinical Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Susan Woolfenden
- School of Clinical Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Katrina Williams
- Department of Paediatrics, Monash University, Clayton, VIC, Australia
| | - Valsamma Eapen
- School of Clinical Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Amy Finlay-Jones
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Andrew Whitehouse
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Martyn Symons
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Melissa Licari
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Kandice Varcin
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Gail Alvares
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Kiah Evans
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Jenny Downs
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
| | - Emma Glasson
- Telethon Kids Institute, Centre for Child Health Research, The University of Western Australia, Perth, WA, Australia
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Song C, Jiang ZQ, Liu D, Wu LL. Application and research progress of machine learning in the diagnosis and treatment of neurodevelopmental disorders in children. Front Psychiatry 2022; 13:960672. [PMID: 36090350 PMCID: PMC9449316 DOI: 10.3389/fpsyt.2022.960672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/01/2022] [Indexed: 11/22/2022] Open
Abstract
The prevalence of neurodevelopment disorders (NDDs) among children has been on the rise. This has affected the health and social life of children. This condition has also imposed a huge economic burden on families and health care systems. Currently, it is difficult to perform early diagnosis of NDDs, which results in delayed intervention. For this reason, patients with NDDs have a prognosis. In recent years, machine learning (ML) technology, which integrates artificial intelligence technology and medicine, has been applied in the early detection and prediction of diseases based on data mining. This paper reviews the progress made in the application of ML in the diagnosis and treatment of NDDs in children based on supervised and unsupervised learning tools. The data reviewed here provide new perspectives on early diagnosis and treatment of NDDs.
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Affiliation(s)
- Chao Song
- Department of Developmental and Behavioral Pediatrics, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Centre for Child Health, Hangzhou, China
| | | | - Dong Liu
- Department of Neonatology, Shenzhen People's Hospital, Shenzhen, China
| | - Ling-Ling Wu
- Department of Developmental and Behavioral Pediatrics, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Centre for Child Health, Hangzhou, China
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30
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Maia N, Nabais Sá MJ, Melo-Pires M, de Brouwer APM, Jorge P. Intellectual disability genomics: current state, pitfalls and future challenges. BMC Genomics 2021; 22:909. [PMID: 34930158 PMCID: PMC8686650 DOI: 10.1186/s12864-021-08227-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 12/02/2021] [Indexed: 12/18/2022] Open
Abstract
Intellectual disability (ID) can be caused by non-genetic and genetic factors, the latter being responsible for more than 1700 ID-related disorders. The broad ID phenotypic and genetic heterogeneity, as well as the difficulty in the establishment of the inheritance pattern, often result in a delay in the diagnosis. It has become apparent that massive parallel sequencing can overcome these difficulties. In this review we address: (i) ID genetic aetiology, (ii) clinical/medical settings testing, (iii) massive parallel sequencing, (iv) variant filtering and prioritization, (v) variant classification guidelines and functional studies, and (vi) ID diagnostic yield. Furthermore, the need for a constant update of the methodologies and functional tests, is essential. Thus, international collaborations, to gather expertise, data and resources through multidisciplinary contributions, are fundamental to keep track of the fast progress in ID gene discovery.
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Affiliation(s)
- Nuno Maia
- Centro de Genética Médica Jacinto de Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), Porto, Portugal. .,Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), and ITR - Laboratory for Integrative and Translational Research in Population Health, University of Porto, Porto, Portugal.
| | - Maria João Nabais Sá
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), and ITR - Laboratory for Integrative and Translational Research in Population Health, University of Porto, Porto, Portugal
| | - Manuel Melo-Pires
- Serviço de Neuropatologia, Centro Hospitalar e Universitário do Porto (CHUPorto), Porto, Portugal
| | - Arjan P M de Brouwer
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Paula Jorge
- Centro de Genética Médica Jacinto de Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), Porto, Portugal.,Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), and ITR - Laboratory for Integrative and Translational Research in Population Health, University of Porto, Porto, Portugal
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31
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Wu PM, Yu WH, Chiang CW, Wu CY, Chen JS, Tu YF. Novel Variations in the KDM5C Gene Causing X-Linked Intellectual Disability. Neurol Genet 2021; 8:e646. [PMID: 34877407 PMCID: PMC8641966 DOI: 10.1212/nxg.0000000000000646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/13/2021] [Indexed: 11/15/2022]
Abstract
Background and Objectives To investigate the pathogenicity of 2 novel KDM5C variations, report the clinical and neuroimaging findings, and review the available literature. Methods Physical examinations, structural neuroimaging studies, and exome sequence analysis were performed. KDM5C constructs were used to study the effect of the variations in transfected cells. Results We identified 2 novel variations c.2233C>G and c.3392_3393delAG in the KDM5C gene harboring from 2 Chinese families with X-linked intellectual disability (ID). The affected male patients exhibited severe ID, short stature, and facial dysmorphism. The 1 with c.3392_3393delAG additionally had epilepsy and autistic spectrum disorder (ASD). Transiently transfected mutant KDM5C constructs both reduced protein expression and stability and decreased histone demethylase activities in cells. Reviewing the available literature, we found that the associated ASD tended to occur in patients with variations near the C-terminus of KDM5C. Discussion We report the clinical, molecular genetic, and pathologic features in patients with novel variations of KDM5C. The variability of the clinical phenotype in addition to an ID may associate with altered particular parts of KDM5C.
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Affiliation(s)
- Po-Ming Wu
- Department of Pediatrics (P.-M.W., W.-H.Y., C.-Y.W., Y.-F.T.), National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan; School of Medicine for International Students (J.-S.C.), I-Shou University, Kaohsiung; Institute of Clinical Medicine (W.-H.Y., Y.-F.T.), College of Medicine, National Cheng Kung University, Tainan; Institute of Molecular Medicine (C.-W.C.), College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wen-Hao Yu
- Department of Pediatrics (P.-M.W., W.-H.Y., C.-Y.W., Y.-F.T.), National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan; School of Medicine for International Students (J.-S.C.), I-Shou University, Kaohsiung; Institute of Clinical Medicine (W.-H.Y., Y.-F.T.), College of Medicine, National Cheng Kung University, Tainan; Institute of Molecular Medicine (C.-W.C.), College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Wu Chiang
- Department of Pediatrics (P.-M.W., W.-H.Y., C.-Y.W., Y.-F.T.), National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan; School of Medicine for International Students (J.-S.C.), I-Shou University, Kaohsiung; Institute of Clinical Medicine (W.-H.Y., Y.-F.T.), College of Medicine, National Cheng Kung University, Tainan; Institute of Molecular Medicine (C.-W.C.), College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chen-Yu Wu
- Department of Pediatrics (P.-M.W., W.-H.Y., C.-Y.W., Y.-F.T.), National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan; School of Medicine for International Students (J.-S.C.), I-Shou University, Kaohsiung; Institute of Clinical Medicine (W.-H.Y., Y.-F.T.), College of Medicine, National Cheng Kung University, Tainan; Institute of Molecular Medicine (C.-W.C.), College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jia-Shing Chen
- Department of Pediatrics (P.-M.W., W.-H.Y., C.-Y.W., Y.-F.T.), National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan; School of Medicine for International Students (J.-S.C.), I-Shou University, Kaohsiung; Institute of Clinical Medicine (W.-H.Y., Y.-F.T.), College of Medicine, National Cheng Kung University, Tainan; Institute of Molecular Medicine (C.-W.C.), College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Fang Tu
- Department of Pediatrics (P.-M.W., W.-H.Y., C.-Y.W., Y.-F.T.), National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan; School of Medicine for International Students (J.-S.C.), I-Shou University, Kaohsiung; Institute of Clinical Medicine (W.-H.Y., Y.-F.T.), College of Medicine, National Cheng Kung University, Tainan; Institute of Molecular Medicine (C.-W.C.), College of Medicine, National Cheng Kung University, Tainan, Taiwan
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32
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Gao L, Zhang J, Ran X, Jia X, Xing Y, Dai T, Song W, Wu Z, Sun W, Shan D. Urinary Proteomics for Noninvasive Prenatal Screening of Trisomy 21: New Biomarker Candidates. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2021; 25:738-744. [PMID: 34714146 DOI: 10.1089/omi.2021.0154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Trisomy 21 is a common birth defect in humans. Screening for trisomy 21 is one of the most important tasks in routine prenatal care and robust noninvasive diagnostics are needed in clinical practice. Urinary proteomics offers a new research platform for diagnostics innovation in this context. We report here new biomarker candidates using urinary proteomics profiling. Specifically, we used liquid chromatography-tandem mass spectrometry (LC-MS/MS) to analyze the proteomes of urine samples from 19 pregnant women (aged 28-44 years) carrying fetuses with trisomy 21 and 22 healthy pregnant women (aged 27-42 years) carrying fetuses with normal karyotype. We identified more than 50 differentially expressed proteins between the trisomy 21 group and healthy group, and most of these proteins were associated with the embryonic development. Importantly, tissue inhibitor of metalloproteinases 2 (TIMP2) and lysosomal-associated membrane protein 2 (LAMP2) were further selected as potential urinary protein biomarkers. We found that the combination of TIMP2 and LAMP2 could differentiate fetuses with trisomy 21 from healthy controls with a sensitivity of 74%, a specificity of 82%, and an area under the receiver operating characteristic curves (AUC) value of 0.82 (95% confidence interval, 0.69-0.95). We conclude that TIMP2 and LAMP2 offer promise as biomarker candidates and warrant further clinical research in larger study samples. These findings further our understanding of the pathological processes involved in fetal trisomy 21 and are poised to accelerate the development of new noninvasive potential biomarkers for trisomy 21 prenatal screening.
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Affiliation(s)
- Lei Gao
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Jian Zhang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Xiaoju Ran
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China.,School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Xue Jia
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Yiyi Xing
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Tianyi Dai
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Wei Song
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Ze Wu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Wei Sun
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China.,School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Dan Shan
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, Beijing, China
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33
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Milone R, Tancredi R, Cosenza A, Ferrari AR, Scalise R, Cioni G, Battini R. 17q12 Recurrent Deletions and Duplications: Description of a Case Series with Neuropsychiatric Phenotype. Genes (Basel) 2021; 12:genes12111660. [PMID: 34828266 PMCID: PMC8620923 DOI: 10.3390/genes12111660] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/15/2021] [Accepted: 10/19/2021] [Indexed: 12/22/2022] Open
Abstract
Syndromic neurodevelopmental disorders are usually investigated through genetics technologies, within which array comparative genomic hybridization (Array-CGH) is still considered the first-tier clinical diagnostic test. Among recurrent syndromic imbalances, 17q12 deletions and duplications are characterized by neurodevelopmental disorders associated with visceral developmental disorders, although expressive variability is common. Here we describe a case series of 12 patients with 17q12 chromosomal imbalances, in order to expand the phenotypic characterization of these recurrent syndromes whose diagnosis is often underestimated, especially if only mild traits are present. Gene content and genotype-phenotype correlations have been discussed, with special regard to neuropsychiatric features, whose impact often requires etiologic analysis.
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Affiliation(s)
- Roberta Milone
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
| | - Raffaella Tancredi
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
| | - Angela Cosenza
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
| | - Anna Rita Ferrari
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
| | - Roberta Scalise
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
- Tuscan PhD Program of Neuroscience, University of Florence, Pisa and Siena, 50139 Florence, Italy
| | - Giovanni Cioni
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
| | - Roberta Battini
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (R.M.); (R.T.); (A.C.); (A.R.F.); (R.S.); (G.C.)
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
- Correspondence:
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34
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Gangfuß A, Czech A, Hentschel A, Münchberg U, Horvath R, Töpf A, O'Heir E, Lochmüller H, Stehling F, Kiewert C, Sickmann A, Kuechler A, Kaiser FJ, Kölbel H, Christiansen J, Schara-Schmidt U, Roos A. Homozygous WASHC4 variant in two sisters causes a syndromic phenotype defined by dysmorphisms, intellectual disability, profound developmental disorder, and skeletal muscle involvement. J Pathol 2021; 256:93-107. [PMID: 34599609 DOI: 10.1002/path.5812] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/01/2021] [Accepted: 09/29/2021] [Indexed: 12/29/2022]
Abstract
Recessive variants in WASHC4 are linked to intellectual disability complicated by poor language skills, short stature, and dysmorphic features. The protein encoded by WASHC4 is part of the Wiskott-Aldrich syndrome protein and SCAR homolog family, co-localizes with actin in cells, and promotes Arp2/3-dependent actin polymerization in vitro. Functional studies in a zebrafish model suggested that WASHC4 knockdown may also affect skeletal muscles by perturbing protein clearance. However, skeletal muscle involvement has not been reported so far in patients, and precise biochemical studies allowing a deeper understanding of the molecular etiology of the disease are still lacking. Here, we report two siblings with a homozygous WASHC4 variant expanding the clinical spectrum of the disease and provide a phenotypical comparison with cases reported in the literature. Proteomic profiling of fibroblasts of the WASHC4-deficient patient revealed dysregulation of proteins relevant for the maintenance of the neuromuscular axis. Immunostaining on a muscle biopsy derived from the same patient confirmed dysregulation of proteins relevant for proper muscle function, thus highlighting an affliction of muscle cells upon loss of functional WASHC4. The results of histological and coherent anti-Stokes Raman scattering microscopic studies support the concept of a functional role of the WASHC4 protein in humans by altering protein processing and clearance. The proteomic analysis confirmed key molecular players in vitro and highlighted, for the first time, the involvement of skeletal muscle in patients. © 2021 The Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Andrea Gangfuß
- Department of Pediatric Neurology, Centre for Neuromuscular Disorders, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg-Essen, Essen, Germany
| | - Artur Czech
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
| | - Andreas Hentschel
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
| | - Ute Münchberg
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
| | - Rita Horvath
- Department of Clinical Neurosciences, John Van Geest Centre for Brain Repair, School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Ana Töpf
- The John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Emily O'Heir
- Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Hanns Lochmüller
- Department of Neuropediatrics and Muscle Disorders, Medical Center - University of Freiburg, Faculty of Medicine, Freiburg, Germany.,Centro Nacional de Análisis Genómico (CNAG-CRG), Center for Genomic Regulation, Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.,Children's Hospital of Eastern Ontario Research Institute; Division of Neurology, Department of Medicine, The Ottawa Hospital; and Brain and Mind Research Institute, University of Ottawa, Ottawa, Canada
| | - Florian Stehling
- Children's Hospital, Department of Pneumology, University Hospital Essen, Essen, Germany
| | - Cordula Kiewert
- Children's Hospital, Department of Endocrinology, University Hospital Essen, Essen, Germany
| | - Albert Sickmann
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
| | - Alma Kuechler
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany.,Essener Zentrum für seltene Erkrankungen (EZSE), University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Frank J Kaiser
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany.,Essener Zentrum für seltene Erkrankungen (EZSE), University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Heike Kölbel
- Department of Pediatric Neurology, Centre for Neuromuscular Disorders, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg-Essen, Essen, Germany
| | - Jon Christiansen
- Department of Pediatric Neurology, Centre for Neuromuscular Disorders, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg-Essen, Essen, Germany
| | - Ulrike Schara-Schmidt
- Department of Pediatric Neurology, Centre for Neuromuscular Disorders, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg-Essen, Essen, Germany
| | - Andreas Roos
- Department of Pediatric Neurology, Centre for Neuromuscular Disorders, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg-Essen, Essen, Germany.,Children's Hospital of Eastern Ontario Research Institute; Division of Neurology, Department of Medicine, The Ottawa Hospital; and Brain and Mind Research Institute, University of Ottawa, Ottawa, Canada
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35
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Masefield SC, Prady SL, Pickett KE. An approach to identifying young children with developmental disabilities via primary care records. Wellcome Open Res 2021; 6:189. [PMID: 35141426 PMCID: PMC8822140 DOI: 10.12688/wellcomeopenres.17051.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2021] [Indexed: 11/20/2022] Open
Abstract
Background: Preschool aged children with developmental disabilities frequently receive a diagnosis of an indicator of disability, such as developmental delay, some time before receiving a definitive diagnosis at school age, such as autism spectrum disorder. The absence of a definitive diagnosis potentially underestimates the need for support by families with young disabled children, also delaying the access of families to condition-specific information and support. Our aim was to develop a strategy to identify children with probable and potential developmental disabilities before the age of five in primary care records for a UK birth cohort, considering how the identification of only probable or potential developmental disability might influence prevalence estimates. Methods: As part of a study of the effects of caring for young children with developmental disabilities on mothers’ health and healthcare use, we developed a two-part strategy to identify: 1) children with conditions associated with significant disability and which can be diagnosed during the preschool period; and 2) children with diagnoses which could indicate potential disability, such as motor development disorder. The strategy, using Read codes, searched the electronic records of children in the Born in Bradford cohort with linked maternal and child sociodemographic information. The results were compared with national and Bradford prevalence estimates. Results: We identified 83 children with disability conditions and 394 with potential disability (44 children had a disability condition and an indicator of potential disability). Combined they produced a developmental disability prevalence of 490 per 10,000 which is above the UK estimate for developmental disabilities in children under five (468 per 10,000) and within the 419-505 per 10,000 prevalence estimated for Bradford (for children aged 0-18). Conclusions: When disability prevalence is estimated only using conditions diagnosed as developmental disabilities, most young children with developmental disabilities likely to be diagnosed at later ages will be missed.
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Affiliation(s)
| | | | - Kate E. Pickett
- Health Sciences, University of York, York, Yorkshire, YO10 5DD, UK
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36
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Chaya T, Ishikane H, Varner LR, Sugita Y, Maeda Y, Tsutsumi R, Motooka D, Okuzaki D, Furukawa T. Deficiency of the neurodevelopmental disorder-associated gene Cyfip2 alters the retinal ganglion cell properties and visual acuity. Hum Mol Genet 2021; 31:535-547. [PMID: 34508581 PMCID: PMC8863419 DOI: 10.1093/hmg/ddab268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 11/28/2022] Open
Abstract
Intellectual disability (ID) is a neurodevelopmental disorder affecting approximately 0.5–3% of the population in the developed world. Individuals with ID exhibit deficits in intelligence, impaired adaptive behavior and often visual impairments. Cytoplasmic fragile X mental retardation 1 (FMR1)-interacting protein 2 (CYFIP2) is an interacting partner of the FMR protein, whose loss results in fragile X syndrome, the most common inherited cause of ID. Recently, CYFIP2 variants have been found in patients with early-onset epileptic encephalopathy, developmental delay and ID. Such individuals often exhibit visual impairments; however, the underlying mechanism is poorly understood. In the present study, we investigated the role of Cyfip2 in retinal and visual functions by generating and analyzing Cyfip2 conditional knockout (CKO) mice. While we found no major differences in the layer structures and cell compositions between the control and Cyfip2 CKO retinas, a subset of genes associated with the transporter and channel activities was differentially expressed in Cyfip2 CKO retinas than in the controls. Multi-electrode array recordings showed more sustained and stronger responses to positive flashes of the ON ganglion cells in the Cyfip2 CKO retina than in the controls, although electroretinogram analysis revealed that Cyfip2 deficiency unaffected the photoreceptor and ON bipolar cell functions. Furthermore, analysis of initial and late phase optokinetic responses demonstrated that Cyfip2 deficiency impaired the visual function at the organismal level. Together, our results shed light on the molecular mechanism underlying the visual impairments observed in individuals with CYFIP2 variants and, more generally, in patients with neurodevelopmental disorders, including ID.
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Affiliation(s)
- Taro Chaya
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Hiroshi Ishikane
- Department of Psychology, Faculty of Human Sciences, Senshu University, Kawasaki, Japan
| | - Leah R Varner
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Yuko Sugita
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Yamato Maeda
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Ryotaro Tsutsumi
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Takahisa Furukawa
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
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37
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Rasheed M, Khan V, Harripaul R, Siddiqui M, Malik MA, Ullah Z, Zahid M, Vincent JB, Ansar M. Exome sequencing identifies novel and known mutations in families with intellectual disability. BMC Med Genomics 2021; 14:211. [PMID: 34452636 PMCID: PMC8399827 DOI: 10.1186/s12920-021-01066-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 08/25/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Intellectual disability (ID) is a phenotypically and genetically heterogeneous disorder. METHODS In this study, genome wide SNP microarray and whole exome sequencing are used for the variant identification in eight Pakistani families with ID. Beside ID, most of the affected individuals had speech delay, facial dysmorphism and impaired cognitive abilities. Repetitive behavior was observed in MRID143, while seizures were reported in affected individuals belonging to MRID137 and MRID175. RESULTS In two families (MRID137b and MRID175), we identified variants in the genes CCS and ELFN1, which have not previously been reported to cause ID. In four families, variants were identified in ARX, C5orf42, GNE and METTL4. A copy number variation (CNV) was identified in IL1RAPL1 gene in MRID165. CONCLUSION These findings expand the existing knowledge of variants and genes implicated in autosomal recessive and X linked ID.
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Affiliation(s)
- Memoona Rasheed
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Valeed Khan
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Ricardo Harripaul
- Molecular Neuropsychiatry and Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1R8, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Maimoona Siddiqui
- Division of Neurology, Shifa College of Medicine, H-8/1, Islamabad, Pakistan
| | - Madiha Amin Malik
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Zahid Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Zahid
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - John B Vincent
- Molecular Neuropsychiatry and Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1R8, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, M5T 1R8, Canada
| | - Muhammad Ansar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
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Burger P, Coutelle R, Strehle A, Colin F, Collot N, Koolen D, Kleefstra T, Mandel JL. GenIDA : l’histoire naturelle et les comorbidités des troubles du neurodéveloppement d’origine génétique. ENFANCE 2021. [DOI: 10.3917/enf2.213.0229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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39
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Polla DL, Fard MAF, Tabatabaei Z, Habibzadeh P, Levchenko OA, Nikuei P, Makrythanasis P, Hussain M, von Hardenberg S, Zeinali S, Fallah MS, Schuurs-Hoeijmakers JHM, Shahzad M, Fatima F, Fatima N, Kaat LD, Bruggenwirth HT, Fleming LR, Condie J, Ploski R, Pollak A, Pilch J, Demina NA, Chukhrova AL, Sergeeva VS, Venselaar H, Masri AT, Hamamy H, Santoni FA, Linda K, Ahmed ZM, Kasri NN, de Brouwer APM, Bergmann AK, Hethey S, Yavarian M, Ansar M, Riazuddin S, Riazuddin S, Silawi M, Ruggeri G, Pirozzi F, Eftekhar E, Sheshdeh AT, Bahramjahan S, Mirzaa GM, Lavrov AV, Antonarakis SE, Faghihi MA, van Bokhoven H. Biallelic variants in TMEM222 cause a new autosomal recessive neurodevelopmental disorder. Genet Med 2021; 23:1246-1254. [PMID: 33824500 PMCID: PMC8725574 DOI: 10.1038/s41436-021-01133-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 02/12/2021] [Accepted: 02/16/2021] [Indexed: 01/25/2023] Open
Abstract
PURPOSE To elucidate the novel molecular cause in families with a new autosomal recessive neurodevelopmental disorder. METHODS A combination of exome sequencing and gene matching tools was used to identify pathogenic variants in 17 individuals. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) and subcellular localization studies were used to characterize gene expression profile and localization. RESULTS Biallelic variants in the TMEM222 gene were identified in 17 individuals from nine unrelated families, presenting with intellectual disability and variable other features, such as aggressive behavior, shy character, body tremors, decreased muscle mass in the lower extremities, and mild hypotonia. We found relatively high TMEM222 expression levels in the human brain, especially in the parietal and occipital cortex. Additionally, subcellular localization analysis in human neurons derived from induced pluripotent stem cells (iPSCs) revealed that TMEM222 localizes to early endosomes in the synapses of mature iPSC-derived neurons. CONCLUSION Our findings support a role for TMEM222 in brain development and function and adds variants in the gene TMEM222 as a novel underlying cause of an autosomal recessive neurodevelopmental disorder.
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Affiliation(s)
- Daniel L. Polla
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands.,CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil.,These authors contributed equally: Daniel L. Polla, Mohammad Ali Farazi Fard
| | - Mohammad Ali Farazi Fard
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.,These authors contributed equally: Daniel L. Polla, Mohammad Ali Farazi Fard
| | - Zahra Tabatabaei
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Parham Habibzadeh
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | | | - Pooneh Nikuei
- Molecular Medicine Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Periklis Makrythanasis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland.,Present address: Biomedical Research Foundation Academy of Athens, Athens, Greece
| | - Mureed Hussain
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Sirous Zeinali
- Department of Molecular Medicine, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | | | - Janneke H. M. Schuurs-Hoeijmakers
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mohsin Shahzad
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, USA.,Department of Molecular Biology, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan.,Jinnah Burn and Reconstructive Surgery Center, Allama Iqbal Medical Research Center, University of Health Sciences, Lahore, Pakistan
| | - Fareeha Fatima
- Center for Excellence in Molecular Biology, University of Punjab, Lahore, Pakistan
| | - Neelam Fatima
- Center for Excellence in Molecular Biology, University of Punjab, Lahore, Pakistan
| | - Laura Donker Kaat
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Hennie T. Bruggenwirth
- Department of Clinical Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Leah R. Fleming
- St. Luke’s Children’s Genetics and Metabolic Clinic, Boise, ID, USA
| | - John Condie
- St Luke’s Pediatric Neurology Clinic, Boise, ID, USA
| | - Rafal Ploski
- Department of Medical Genetics, Warsaw Medical University, Warsaw, Poland
| | - Agnieszka Pollak
- Department of Medical Genetics, Warsaw Medical University, Warsaw, Poland
| | - Jacek Pilch
- Department of Pediatric Neurology, Medical University of Silesia, Katowice, Poland
| | | | | | | | - Hanka Venselaar
- Center for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Amira T. Masri
- Faculty of Medicine, Pediatric Department Division of Child Neurology, The University of Jordan, Amman, Jordan
| | - Hanan Hamamy
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
| | - Federico A. Santoni
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland.,Department of Endocrinology Diabetes and Metabolism, Lausanne University Hospital, Lausanne, Switzerland
| | - Katrin Linda
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Zubair M. Ahmed
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Nael Nadif Kasri
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Arjan P. M. de Brouwer
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anke K. Bergmann
- Department of Human Genetics, Hannover Medical School, Hanover, Germany
| | - Sven Hethey
- Department of Neuropediatrics, Children’s and Youth Hospital Auf der Bult, Hanover, Germany
| | - Majid Yavarian
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Muhammad Ansar
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland.,Institute of Molecular and Clinical Ophthalmology Basel, Basel, Switzerland
| | - Saima Riazuddin
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Sheikh Riazuddin
- Department of Molecular Biology, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan.,Jinnah Burn and Reconstructive Surgery Center, Allama Iqbal Medical Research Center, University of Health Sciences, Lahore, Pakistan
| | - Mohammad Silawi
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Gaia Ruggeri
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA, USA
| | - Filomena Pirozzi
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA, USA
| | - Ebrahim Eftekhar
- Molecular Medicine Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Afsaneh Taghipour Sheshdeh
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Shima Bahramjahan
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Ghayda M. Mirzaa
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, WA, USA.,Department of Pediatrics, University of Washington, Seattle, WA, USA.,Brotman Baty Institute for Precision Medicine, Seattle, WA, USA
| | | | - Stylianos E. Antonarakis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland.,Medigenome, Swiss Institute of Genomic Medicine, Geneva, Switzerland
| | - Mohammad Ali Faghihi
- Persian BayanGene Research and Training Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.,Department of Psychiatry & Behavioral Sciences, Hussman Institute for Human Genomics, University of Miami, Miami, FL, USA
| | - Hans van Bokhoven
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands.
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Inositol monophosphatase 1 (IMPA1) mutation in intellectual disability patients impairs neurogenesis but not gliogenesis. Mol Psychiatry 2021; 26:3558-3571. [PMID: 32839513 DOI: 10.1038/s41380-020-00862-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 11/09/2022]
Abstract
A homozygous mutation in the inositol monophosphatase 1 (IMPA1) gene was recently identified in nine individuals with severe intellectual disability (ID) and disruptive behavior. These individuals belong to the same family from Northeastern Brazil, which has 28 consanguineous marriages and 59 genotyped family members. IMPA1 is responsible for the generation of free inositol from de novo biosynthesis and recycling from inositol polyphosphates and participates in the phosphatidylinositol signaling pathway. To understand the role of IMPA1 deficiency in ID, we generated induced pluripotent stem cells (iPSCs) from patients and neurotypical controls and differentiated these into hippocampal dentate gyrus-like neurons and astrocytes. IMPA1-deficient neuronal progenitor cells (NPCs) revealed substantial deficits in proliferation and neurogenic potential. At low passage NPCs (P1 to P3), we observed cell cycle arrest, apoptosis, progressive change to a glial morphology and reduction in neuronal differentiation. These observations were validated by rescuing the phenotype with myo-inositol supplemented media during differentiation of patient-derived iPSCs into neurons and by the reduction of neurogenic potential in control NPCs-expressing shIMPA1. Transcriptome analysis showed that NPCs and neurons derived from ID patients have extensive deregulation of gene expression affecting pathways necessary for neurogenesis and upregulation of gliogenic genes. IMPA1 deficiency did not affect cell cycle progression or survival in iPSCs and glial progenitor cells or astrocyte differentiation. Therefore, this study shows that the IMPA1 mutation specifically affects NPC survival and neuronal differentiation.
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García-Payá E, Gutiérrez-Agulló M, García-Prieto FF, Francés Ferre J. An 88.8-kb Novel Deletion of 19q13.2 Encompassing the ATP1A3 Gene Detected by Array CGH in a Patient with Delayed Psychomotor Development, Generalized Hypotonia and Macrocephaly. Mol Syndromol 2021; 12:234-239. [PMID: 34421501 PMCID: PMC8339483 DOI: 10.1159/000515043] [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: 11/07/2020] [Accepted: 02/04/2021] [Indexed: 11/19/2022] Open
Abstract
Many neurodevelopmental disorders are caused by the presence of CNVs. Chromosome microarray technology is widely used to accurately detect CNVs. We report the case of a male, aged 3 years, presenting with delayed psychomotor development, generalized hypotonia, encephalopathy, delayed myelination in the central nervous system, and poor motor coordination. The array CGH revealed an interstitial deletion of chromosome 19q13.2 with a size of 88.8 kb involving 3 OMIM genes: RABAC1, ARHGEF1, and ATP1A3. Heterozygous mutations in the ATP1A3 gene are associated with delayed psychomotor development, alternating hemiplegia of childhood type 2 (AHC2), dystonia type 12, and cerebellarataxia-areflexia-pes cavus-optic atrophy-sensorineural hearing loss syndrome, also called CAPOS syndrome. The phenotypic expression of partial ATP1A3 deletion is, however, poorly described in the literature. The deletion was confirmed by MLPA, and we identified a hitherto undescribed novel deletion of exons 3b-21 of the ATP1A3 gene. Our data suggest that the deletion of the ATP1A3 gene is a causative factor of the AHC2 phenotype in the patient.
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Affiliation(s)
- Elena García-Payá
- Laboratory of Molecular Cytogenetics, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Hospital General Universitario de Alicante, Alicante, Spain
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Hatch HAM, O'Neil MH, Marion RW, Secombe J, Shulman LH. Caregiver-reported characteristics of children diagnosed with pathogenic variants in KDM5C. Am J Med Genet A 2021; 185:2951-2958. [PMID: 34089235 DOI: 10.1002/ajmg.a.62381] [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: 11/18/2020] [Revised: 05/08/2021] [Accepted: 05/22/2021] [Indexed: 11/09/2022]
Abstract
Loss of function variants in the lysine demethylase 5C (KDM5C) gene account for approximately 0.7-2.8% of X-linked intellectual disability (ID) cases and pose significant burdens for patients and their caregivers. To date, 45 unique variants in KDM5C have been reported in individuals with ID. As a rare disorder, its etiology and natural history remain an area of active investigation, with treatment limited to symptom management. Previous studies have found that males present with moderate to severe ID with significant syndromic comorbidities such as epilepsy, short stature, and craniofacial abnormalities. Although not as well characterized, females have been reported to predominantly display mild to moderate ID with approximately half being asymptomatic. Here, we present caregiver-reported data for 37 unrelated individuals with pathogenic variants in KDM5C; the largest cohort reported to-date. We find that up to 70% of affected females were reported to display syndromic features including gastrointestinal dysfunction and hearing impairment. Additionally, more than half of individuals reported a diagnosis of autism spectrum disorder or described features consistent with this spectrum. Our data thus provide further evidence of sexually dimorphic heterogeneity in disease presentation and suggest that pathogenic variants in KDM5C may be more common than previously assumed.
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Affiliation(s)
- Hayden A M Hatch
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Molly H O'Neil
- Rose F. Kennedy Children's Evaluation and Rehabilitation Center, The Children's Hospital at Montefiore, Bronx, New York, USA
| | - Robert W Marion
- Division of Genetic Medicine, The Children's Hospital at Montefiore, Bronx, New York, USA
| | - Julie Secombe
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, USA.,Department of Genetics, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Lisa H Shulman
- Rose F. Kennedy Children's Evaluation and Rehabilitation Center, The Children's Hospital at Montefiore, Bronx, New York, USA
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Cao J, Xian W, Palihati M, Zhu Y, Wang G, Xie Y, Zhou G, You L. Deficiency of intellectual disability-related gene Brpf1 reduced inhibitory neurotransmission in MGE-derived GABAergic interneurons. G3-GENES GENOMES GENETICS 2021; 11:6179329. [PMID: 33744924 PMCID: PMC8496217 DOI: 10.1093/g3journal/jkab090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/09/2021] [Indexed: 12/13/2022]
Abstract
Intellectual disability is closely related to impaired GABA neurotransmission. Brpf1 was specifically expressed in medial ganglionic eminence (MGE), a developmental niche of GABAergic interneurons, and patients with BRPF1 mutations showed intellectual disability. To test its role in the development and function of MGE-derived GABAergic interneurons, we performed immunofluorescence staining, whole-cell patch-clamp, MGE transplantation, and mRNA-Seq to understand its effect on neuronal differentiation, dendritic morphology, electrophysiology, migration, and gene regulation, using mouse MGE-derived GABAergic interneurons infected with AAV-shBrpf1. The results showed that Brpf1 knockdown had a decreasing trend, although not significant, on the differentiation of GABAergic interneurons into parvalbumin+ interneurons. Moreover, increased firing threshold, decreased number of evoked action potentials, and a reduced amplitude of miniature inhibitory postsynaptic currents were observed before any significant change of MAP2+ dendritic morphology and in vivo migration ability appeared. Finally, mRNA-Seq analysis revealed that genes related to neurodevelopment and synaptic transmission such as Map2k7 were dysregulated. Our results demonstrated a key role of Brpf1 in inhibitory neurotransmission and related gene expression of GABAergic interneurons.
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Affiliation(s)
- Jingli Cao
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Weiwei Xian
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Maierdan Palihati
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yu Zhu
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Guoxiang Wang
- Institutes of Brain Sciences, Fudan University, Shanghai 200032, China
| | - Yunli Xie
- Institutes of Brain Sciences, Fudan University, Shanghai 200032, China
| | - Guomin Zhou
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention of Shanghai, Shanghai 200032, China
| | - Linya You
- Department of Human Anatomy & Histoembryology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention of Shanghai, Shanghai 200032, China
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García-Santiago FA, Martínez-Payo C, Mansilla E, Santos-Simarro F, Ruiz de Azua Ballesteros M, Mori MÁ, Antolín Alvarado E, Nieto Y, Vallcorba I, Tenorio J, Nevado J, Lapunzina P. Prenatal ultrasound findings in Koolen-de Vries foetuses: Central nervous system anomalies are frequent markers of this syndrome. Mol Genet Genomic Med 2021; 9:e1649. [PMID: 33733630 PMCID: PMC8172212 DOI: 10.1002/mgg3.1649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 02/12/2021] [Accepted: 02/19/2021] [Indexed: 11/12/2022] Open
Abstract
Objective Prenatal diagnoses of microdeletion syndromes without ultrasound findings in the first and second trimester are always difficult. The objective of this study is to report the prenatal ultrasound findings in four foetuses diagnosed with 17q21.31 microdeletions (Koolen‐de Vries syndrome) using chromosomal microarrays (CMA). Patients and Methods We present four foetuses with 17q21.31 microdeletion. All showed CNS anomalies in the third trimester, three had ventriculomegaly, and one hypogenesis of corpus callosum at 31 weeks of pregnancy. Results Array‐SNPs and CGH‐array were performed on uncultured amniocytes and peripheral blood revealing a 17q21.31 microdeletion. Conclusions Prenatal CNS anomalies (mainly ventriculomegaly) at third trimester, in spite of isolate, should be considered a prenatal ultrasound marker of this syndrome. This kind of malformations raise the possibility of an underlying genetic conditions including 17q21.31 microdeletion; thus, CMA should be taken into consideration when offering prenatal genetic counselling.
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Affiliation(s)
- Fe Amalia García-Santiago
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain.,The European Reference Network on Intellectual Disability, TeleHealth and Congenital Anomalies (ERN ITHACA), Brussels, Belgium
| | - Cristina Martínez-Payo
- Department of Gynecology and Obstetrics, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Elena Mansilla
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain.,The European Reference Network on Intellectual Disability, TeleHealth and Congenital Anomalies (ERN ITHACA), Brussels, Belgium
| | - Fernando Santos-Simarro
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain.,The European Reference Network on Intellectual Disability, TeleHealth and Congenital Anomalies (ERN ITHACA), Brussels, Belgium
| | | | - María Ángeles Mori
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain
| | - Eugenia Antolín Alvarado
- Universidad Autónoma de Madrid, Madrid, Spain.,Department of Gynecology and Obstetrics, Hospital Universitario La Paz, Madrid, Spain
| | - Yolanda Nieto
- Department of Gynecology and Obstetrics, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Isabel Vallcorba
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain
| | - Jair Tenorio
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain.,The European Reference Network on Intellectual Disability, TeleHealth and Congenital Anomalies (ERN ITHACA), Brussels, Belgium
| | - Julián Nevado
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain.,The European Reference Network on Intellectual Disability, TeleHealth and Congenital Anomalies (ERN ITHACA), Brussels, Belgium
| | - Pablo Lapunzina
- INGEMM, Institute of Medical and Molecular Genetics-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Unidad 753, ISCIII, Madrid, Spain.,The European Reference Network on Intellectual Disability, TeleHealth and Congenital Anomalies (ERN ITHACA), Brussels, Belgium
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Hatch HAM, Belalcazar HM, Marshall OJ, Secombe J. A KDM5-Prospero transcriptional axis functions during early neurodevelopment to regulate mushroom body formation. eLife 2021; 10:63886. [PMID: 33729157 PMCID: PMC7997662 DOI: 10.7554/elife.63886] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 03/16/2021] [Indexed: 02/06/2023] Open
Abstract
Mutations in the lysine demethylase 5 (KDM5) family of transcriptional regulators are associated with intellectual disability, yet little is known regarding their spatiotemporal requirements or neurodevelopmental contributions. Utilizing the mushroom body (MB), a major learning and memory center within the Drosophila brain, we demonstrate that KDM5 is required within ganglion mother cells and immature neurons for proper axogenesis. Moreover, the mechanism by which KDM5 functions in this context is independent of its canonical histone demethylase activity. Using in vivo transcriptional and binding analyses, we identify a network of genes directly regulated by KDM5 that are critical modulators of neurodevelopment. We find that KDM5 directly regulates the expression of prospero, a transcription factor that we demonstrate is essential for MB morphogenesis. Prospero functions downstream of KDM5 and binds to approximately half of KDM5-regulated genes. Together, our data provide evidence for a KDM5-Prospero transcriptional axis that is essential for proper MB development.
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Affiliation(s)
- Hayden AM Hatch
- Dominick P. Purpura Department of Neuroscience Albert Einstein College of Medicine, Bronx, United States
| | - Helen M Belalcazar
- Department of Genetics Albert Einstein College of Medicine, Bronx, United States
| | - Owen J Marshall
- Menzies Institute for Medical Research University of Tasmania, Hobart, Australia
| | - Julie Secombe
- Dominick P. Purpura Department of Neuroscience Albert Einstein College of Medicine, Bronx, United States.,Department of Genetics Albert Einstein College of Medicine, Bronx, United States
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Rasool IG, Zahoor MY, Iqbal M, Anjum AA, Ashraf F, Abbas HQ, Baig HMA, Mahmood T, Shehzad W. Whole exome sequencing revealed novel variants in consanguineous Pakistani families with intellectual disability. Genes Genomics 2021; 43:503-512. [PMID: 33710595 DOI: 10.1007/s13258-021-01070-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 02/19/2021] [Indexed: 01/19/2023]
Abstract
BACKGROUND Intellectual disability (ID) is a heterogeneous disorder affecting 1-3% of the population. Elucidation of monogenic variants for ID is a current challenge. These variants can be better demonstrated in consanguineous affected families. OBJECTIVE The study was designed to find the genetic variants of ID in consanguineous families. METHODS We analyzed five unrelated consanguineous Pakistani families affected with ID using whole exome sequencing (WES). Data was analyzed using different bioinformatics tools and software. RESULTS We mapped four variants including three novels in four different ID known genes. Each variant is found in a different family, co-segregating with a recessive pattern of inheritance. The novel variants found are; c. 2_4del (p.?) mapped in ROS1 and c. 718G>A (p.Gly240Arg) in GRM1. Another novel causative variant, c.2673del (p.Gly892Aspfs*17) identified in COL18A1 in a recessive form, a gene reported for Knobloch syndrome that manifests ID along with typical retinal abnormalities, and this phenotype was confirmed on reverse phenotyping. A mutation c.2134C>T (p.Arg712*) in TRAPPC9 has been found first time in the homozygous recessive form in our enrolled three affected siblings while it was previously reported in compound heterozygous form in a Caucasian descent. While fifth family remained unsolved. CONCLUSION These mutations in four different genes with a recessive inheritance would be a contribution to the disease variant database of this devastating disorder.
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Affiliation(s)
- Iqra Ghulam Rasool
- Molecular Biology and Forensic Laboratory, Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - Muhammad Yasir Zahoor
- Molecular Biology and Forensic Laboratory, Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan.
| | - Muhammad Iqbal
- Department of Biotechnology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Aftab Ahmad Anjum
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Fatima Ashraf
- Molecular Biology and Forensic Laboratory, Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - Hafiz Qamar Abbas
- Molecular Biology and Forensic Laboratory, Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | | | - Tariq Mahmood
- Department of Statistics and Computer Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Wasim Shehzad
- Molecular Biology and Forensic Laboratory, Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
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Gangfuß A, Yigit G, Altmüller J, Nürnberg P, Czeschik JC, Wollnik B, Bögershausen N, Burfeind P, Wieczorek D, Kaiser F, Roos A, Kölbel H, Schara-Schmidt U, Kuechler A. Intellectual disability associated with craniofacial dysmorphism, cleft palate, and congenital heart defect due to a de novo MEIS2 mutation: A clinical longitudinal study. Am J Med Genet A 2021; 185:1216-1221. [PMID: 33427397 DOI: 10.1002/ajmg.a.62070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/09/2020] [Accepted: 12/19/2020] [Indexed: 11/09/2022]
Abstract
Intellectual disability (ID) has an estimated prevalence of 1.5%-2%. Whole exome sequencing (WES) studies have identified a multitude of novel causative gene defects and have shown that sporadic ID cases result from de novo mutations in genes associated with ID. Here, we report on a 10-year-old girl, who has been regularly presented in our neuropediatric and genetic outpatient clinic. A median cleft palate and a heart defect were surgically corrected in infancy. Apart from ID, she has behavioral anomalies, muscular hypotonia, scoliosis, and hypermobile joints. The facial phenotype is characterized by arched eyebrows, mildly upslanting long palpebral fissures, prominent nasal tip, and large, protruding ears. Trio WES revealed a de novo missense variant in MEIS2 (c.998G>A; p.Arg333Lys). Haploinsufficiency of MEIS2 had been discussed as the most likely mechanism of the microdeletion 5q14-associated complex phenotype with ID, cleft palate, and heart defect. Recently, four studies including in total 17 individuals with intragenic MEIS2 variants were reported. Here we present the evolution of the clinical phenotype and compare with the data of known individuals.
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Affiliation(s)
- Andrea Gangfuß
- Department of Neuropediatrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Gökhan Yigit
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Janine Altmüller
- Cologne Center for Genomics, University of Cologne, Cologne, Germany.,Institute of Human Genetics, University of Cologne, Cologne, Germany
| | - Peter Nürnberg
- Cologne Center for Genomics, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | | | - Bernd Wollnik
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Nina Bögershausen
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Peter Burfeind
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Dagmar Wieczorek
- Institute of Human Genetics, University Hospital Essen, University of Duisburg - Essen, Essen, Germany.,Institute of Human Genetics, University Hospital Düsseldorf, Heinrich-Heine University, Düsseldorf, Germany
| | - Frank Kaiser
- Institute of Human Genetics, University Hospital Essen, University of Duisburg - Essen, Essen, Germany
| | - Andreas Roos
- Department of Neuropediatrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Heike Kölbel
- Department of Neuropediatrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Ulrike Schara-Schmidt
- Department of Neuropediatrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Alma Kuechler
- Institute of Human Genetics, University Hospital Essen, University of Duisburg - Essen, Essen, Germany
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Roos E, Søndenaa E. Improving the transition process to independent living for adolescents with profound intellectual disabilities. Experiences of parents and employees. BMC Health Serv Res 2020; 20:1133. [PMID: 33298053 PMCID: PMC7724626 DOI: 10.1186/s12913-020-05976-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 11/25/2020] [Indexed: 11/22/2022] Open
Abstract
Background The transition process from the family home to independent living for young adults with profound intellectual disability (PID) becomes delayed. Those families face challenges that exceed those of typical families such as higher objective and subjective burden, more frequent psychological distress and lower social support. The aim of this study was to explore the collaboration process between parents and employees and identify factors that improve the transition with less burden. Methods A descriptive qualitative study was undertaken with 18 persons (9 parents and 9 employees) interviewed individually and in groups. In accordance with the municipality’s guidelines, families with a child with PID should apply for housing, when the child turns 16. The purpose is to ensure interdisciplinary collaboration, information flow and coordinated services according to family’s needs. The main question in the interviews was ‘What was your experience with cooperation in the transition process, and what would you do to improve this process?’ The interviews were analysed with a thematic approach using systematic text condensation. Results The parents experienced a lack of general information about the ‘housing waiting list’, level of services, and the plan for time of moving from the family home, and how to choose where and whom to live with. Parents described an unsustainable burden of care during the waiting period, and a family crisis caused the allocation of an apartment in a group house. Employees shared challenges to meet families’ wishes, as there were too few group homes. They experienced good collaboration with families and said they offered respite care, due to reduce parents’ burden of care. Employees experienced that PID adolescents developed skills, mastery and degrees of independence after completing a residency at the Folk High School. Conclusions To improve the transition process from family home to independent living for young adults with PID, the informants highlighted some factors to reduce the burden of care on families: 1) Systematic follow-up program for families to observe their needs at an early stage; 2) More available group houses; 3) Information about the housing priorities of the services and; 4) Educational preparation programs for families.
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Affiliation(s)
- Eirik Roos
- Department of Health and Welfare, Municipality of Trondheim, Norway
| | - Erik Søndenaa
- Faculty of Medicine and Health Sciences (MH), Department of Mental Health, Norwegian University of Science and Technology, 7491, Trondheim, Norway. .,Department of Brøset, St. Olavs University Hospital, Trondheim, Norway.
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Oliveira LF, Chaves TF, Baretto N, de Luca GR, Barbato IT, Barbato Filho JH, Ocampos M, Maris AF. Etiology of intellectual disability in individuals from special education schools in the south of Brazil. BMC Pediatr 2020; 20:506. [PMID: 33143672 PMCID: PMC7640392 DOI: 10.1186/s12887-020-02382-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 10/12/2020] [Indexed: 11/25/2022] Open
Abstract
Background Intellectual Disability (ID) is characterized by significant limitations that affect intellectual functioning, adaptive behavior, and practical skills which directly interfere with interpersonal relationships and the environment. In Western countries, individuals with ID are overrepresented in the health system, often due to associated comorbidities, and its life-time cost places ID as one of the most expensive conditions of all diagnoses in the International Classification of Diseases. Most of the people affected (75%) live in low-income countries, suffer from malnutrition, lack health care, and do not have access to adequate treatment. The aim of this study was to obtain an estimate of the diagnostic status as well as the prevalence of familial ID among individuals with serious (moderate or severe) ID in a region of the State of Santa Catarina, investigating attendees of special education schools of the Florianópolis Macroregion. Methods This was a cross-sectional study conducted between August 2011 and August 2014, through a semi-structured screening questionnaire for the collection of relevant developmental, clinical, familial and educational data, applied in an interview to guardians of students of special education schools of the macroregion of Florianópolis. Results The participant special schools enrolled close to 1700 students during the study period and the questionnaire was applied to 849 (50.5%). The male to female ratio of the participants was 1.39:1. Clear etiologic explanations were relatively scarce (24%); most diagnoses referring only to the type and the degree of impairment and for the majority (61.4%) the cause was unknown. About half were sporadic cases within their families (considering three generations). For 44.2% at least one other case of an ID-related condition in the extended family was mentioned, with 293 (34.5%) representing potential familial cases. Conclusion Here we describe the epidemiological profile, the available diagnostics, etiology, family history and possible parental consanguinity of participants with ID of special education schools in the South of Brazil. The main results show the need for etiological diagnosis and uncover the relevance of potential hereditary cases in a population where consanguineous unions have a relatively low frequency (0,6%) and highlight the need for public health actions. Supplementary information Supplementary information accompanies this paper at 10.1186/s12887-020-02382-5.
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Affiliation(s)
- Luan Freitas Oliveira
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina-UFSC, Florianópolis, SC, 88040-900, Brazil.
| | - Tiago Fernando Chaves
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina-UFSC, Florianópolis, SC, 88040-900, Brazil
| | - Nathacha Baretto
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina-UFSC, Florianópolis, SC, 88040-900, Brazil
| | | | | | | | | | - Angelica Francesca Maris
- Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina-UFSC, Florianópolis, SC, 88040-900, Brazil.
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50
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The effects of sex on prevalence and mechanisms underlying neurodevelopmental disorders. HANDBOOK OF CLINICAL NEUROLOGY 2020. [PMID: 32958183 DOI: 10.1016/b978-0-444-64150-2.00025-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Neurodevelopmental disorders occur more frequently in boys than in girls and often differ in presentation between the sexes. The sex differences in prevalence and presentation of autism spectrum disorder, intellectual disability, communication disorders, specific learning disabilities, attention deficit/hyperactivity disorder, Tourette's syndrome, and epilepsy are discussed, as well as sex differences in the patterns of comorbidities between these disorders. Prominent theories have been proposed to explain sex biases. These include genetic factors, sex hormones, sociological factors, cognitive differences between the sexes, and environmental insult. Despite the large body of research reviewed in this chapter, many aspects of sex-related effects in neurodevelopmental disorders remain poorly understood.
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