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Wang Y, Liu C, Hu R, Geng J, Lu J, Zhao X, Xiong Y, Wu J, Yin A. Intrauterine phenotype features of fetuses with 7q11.23 microduplication syndrome. Orphanet J Rare Dis 2023; 18:305. [PMID: 37759207 PMCID: PMC10523695 DOI: 10.1186/s13023-023-02923-y] [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: 11/03/2022] [Accepted: 09/21/2023] [Indexed: 09/29/2023] Open
Abstract
OBJECTIVE To share our experience on prenatal diagnosis of 7q11.23 microduplication syndrome and to further delineate the fetal phenotypes of the syndrome. METHODS A retrospective study was conducted to evaluate seven cases of dup7q11.23 syndrome diagnosed prenatally by chromosomal microarray (CMA). Clinical data were reviewed, including maternal characteristics, indications for prenatal diagnosis, sonographic findings, CMA results, pregnancy outcomes and follow-ups. RESULTS Seven cases, including 2 pairs of MCDA twins, were prenatally identified with dup7q11.23 syndrome. The most common prenatal sonographic features were ventriculomegaly, low-lying conus medullaris, and dilated ascending aorta. All 7 fetuses presented with typical 7q11.23 duplications (1.40-1.55 Mb). Parental chromosome analysis was performed in four pairs of parents, and indicated that the duplications of Case 6 and 7 were inherited from their asymptomatic mother. CONCLUSION Our case series suggest that prenatal features of dup7q11.23 cases are diversified, with ventriculomegaly and low-lying conus medullaris being the most common intrauterine phenotypes. Additionally, cleft palate, dilated ascending aorta, and renal abnormalities were also observed, and should be taken into consideration in subsequent studies.
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Affiliation(s)
- Yunan Wang
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Chang Liu
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Rong Hu
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Juan Geng
- UItrasonic Diagnosis Deparment, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Jian Lu
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Xin Zhao
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Ying Xiong
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Jing Wu
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China
| | - Aihua Yin
- Medical Genetic Center, Guangdong Women and Children Hospital, NO.521-523, Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong, People's Republic of China.
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 510010, Guangdong, People's Republic of China.
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de Carvalho AFL, Alves ES, Pitanga PML, Ribeiro EM, Doriqui MJR, Toralles MBP, Topázio BA, dos Santos JF, de Lima RLLF, Kulikowski LD, Acosta AX. Identifying Genetic Etiology in Patients with Intellectual Disability: An Experience in Public Health Services in Northeastern Brazil. J Pediatr Genet 2022. [DOI: 10.1055/s-0042-1757888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AbstractIntellectual disability (ID) is considered a common neuropsychiatric disorder that affects up to 3% of the population. The etiologic origin of ID may be genetic, environmental, and multifactorial. Chromosomopathies are relatively common among the genetic causes of ID, especially in the most severe cases and those associated with dysmorphic features. Currently, the application of new molecular cytogenetics technologies has increasingly allowed the identification of microdeletions, microduplications, and unbalanced translocations as causes of ID. The objective of this study was to investigate the etiology of ID in patients admitted to a public hospital in Northeastern Brazil. In total, 119 patients with ID who had normal karyotypes and fragile X exams participated in this study. The patients were initially physically examined for microdeletion syndromes and then tested using fluorescence in situ hybridization (FISH), multiplex ligation-dependent probe amplification (MLPA), methylation-sensitive polymerase chain reaction (MS-PCR), and chromosome microarray analysis (CMA), according to clinical suspicion. Patients with no diagnoses after FISH, MLPA, and/or MS-PCR evaluations were subsequently tested by CMA. The rate of etiologic diagnoses of ID in the current study was 28%. FISH diagnosed 25 out of 79 tested (31%), MLPA diagnosed 26 out of 79 tested (32%), MS-PCR diagnosed 7 out of 20 tested (35%), and the single nucleotide polymorphism array diagnosed 6 out of 27 tested (22%). Although the CMA is the most complete and recommended tool for the diagnosis of microdeletions, microduplications, and unbalance translocations in patients with ID, FISH, MLPA, and MS-PCR testing can be used as the first tests for specific syndromes, as long as the patients are first physically screened clinically, especially in the public health networks system in Brazil, where resources are scarce.
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Affiliation(s)
| | - Esmeralda Santos Alves
- Laboratory of Human Genetics and Mutagenesis, Institute of Biology, Federal University Bahia (UFBA), Salvador, Bahia, Brazil
| | - Paula Monique Leite Pitanga
- Laboratory of Human Genetics and Mutagenesis, Institute of Biology, Federal University Bahia (UFBA), Salvador, Bahia, Brazil
| | - Erlane Marques Ribeiro
- Faculty of Medicine Estacio of Juazeiro Norte, Estacio-FMJ, Hospital Infantil Albert Sabin, Fortaleza, Ceará, Brazil
| | | | - Maria Betânia Pereira Toralles
- Medical School of Medicine, Medical Genetic Service – Edgard Santos Teaching Hospital/Federal University of Bahia, Salvador, Bahia, Brazil
| | - Bianca Arcaro Topázio
- Laboratory of Human Genetics and Mutagenesis, Institute of Biology, Federal University Bahia (UFBA), Salvador, Bahia, Brazil
| | - Jéssica Fernandes dos Santos
- Laboratory of Human Genetics and Mutagenesis, Institute of Biology, Federal University Bahia (UFBA), Salvador, Bahia, Brazil
| | | | | | - Angelina Xavier Acosta
- Medical School of Medicine, Medical Genetic Service – Edgard Santos Teaching Hospital/Federal University of Bahia, Salvador, Bahia, Brazil
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3
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Klein-Tasman BP, Yund BD, Mervis CB. The Behavioral Phenotype of 7q11.23 Duplication Syndrome Includes Risk for Oppositional Behavior and Aggression. J Dev Behav Pediatr 2022; 43:e390-e398. [PMID: 35580312 PMCID: PMC9329151 DOI: 10.1097/dbp.0000000000001068] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 01/03/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE 7q11.23 duplication syndrome (Dup7) is a genetic disorder with a variable phenotype associated with cognitive and behavioral characteristics including a high incidence of expressive language difficulties, social anxiety, and oppositional or disruptive behavior. Correlates of aggression and oppositionality were examined. METHOD Participants were 63 children with genetically confirmed Dup7 between the ages of 4 and 17 years. A multimethod, multi-informant approach was used to assess aggression and oppositional behavior, and the contributions of cognitive functioning, expressive language, autism spectrum, social anxiety, and hyperactivity/impulsivity (H/I) symptomatology were considered. RESULTS Elevated levels of aggression and oppositional behavior were found. Cognitive functioning, expressive language, and autism spectrum disorder symptomatology were not significantly related to parent ratings of aggression, although young children who had language and nonverbal cognitive delays were most likely to demonstrate examiner-observed aggression. Social anxiety and H/I symptomatology were related to defiant/aggressive and oppositional behavior. CONCLUSION Genes in the 7q11.23 region duplicated in Dup7, in transaction with the environment, may contribute to aggressive and oppositional behavior.
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Affiliation(s)
| | - Brianna D Yund
- Department of Pediatrics, Division of Clinical Behavioral Neuroscience, University of Minnesota, Minneapolis, MN
| | - Carolyn B Mervis
- Department of Psychological and Behavioral Sciences, University of Louisville, Louisville, KY
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Li C, Zhang J, Li J, Qiao G, Zhan Y, Xu Y, Yang H. BACs-on-Beads Assay for the Prenatal Diagnosis of Microdeletion and Microduplication Syndromes. Mol Diagn Ther 2021; 25:339-349. [PMID: 33826125 DOI: 10.1007/s40291-021-00522-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To evaluate the clinical value of BACs-on-Beads (BoBs) assay in detection of microdeletion and microduplication syndromes. METHODS A total of 6,814 cases of amniotic fluid cells collected from January 2015 to July 2020 in our hospital were analyzed by chromosomal karyotyping and BoBs assay. Fluorescence in situ hybridization (FISH) or chromosomal microarray analysis (CMA) provided further validation for the cases of microdeletion and microduplication. RESULTS Thirty microdeletion and microduplication syndromes were identified by BoBs with an incidence of ~1/227, including 22q11.2 microduplication (0.044%, 3/6814), DiGeorge I syndrome (0.044%, 3/6814), 17p11.2 microduplication (0.015%, 1/6814), Smith-Magenis syndrome (0.015%, 1/6814), 17p11.2p11.3 microduplication (0.015%, 1/6814), Williams-Beuren syndrome (0.088%, 6/6814), 7q11.2 microduplication (0.029%, 2/6814), DiGeorge II syndrome (0.015%, 1/6814), 18p11.32p11.21 microduplication (0.015%, 1/6814), Wolf-Hirschhorn syndrome (0.029%, 2/6814), 4p16.3 microduplication (0.015%, 1/6814), Langer-Giedion syndrome (0.015%, 1/6814), Miller-Dieker syndrome (0.015%, 1/6814), Cri du Chat syndrome (0.015%, 1/6814), Xp22.31 microdeletion (0.059%, 4/6814), Prader-Willi syndrome (0.015%, 1/6814). High concordance was obtained between BoBs and FISH or CMA. However, only four cases were detected by chromosomal karyotyping. CONCLUSION BoBs assay can rapidly detect microdeletion and microduplication syndromes, which compensates the shortcomings of conventional chromosomal karyotyping and greatly improves the efficiency and accuracy of prenatal diagnosis.
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Affiliation(s)
- Chunyan Li
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, 127 West ChangLe Road, Xi'an, 710032, Shaanxi, China
| | - Jianfang Zhang
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, 127 West ChangLe Road, Xi'an, 710032, Shaanxi, China
| | - Jia Li
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, 127 West ChangLe Road, Xi'an, 710032, Shaanxi, China
| | - Guyuan Qiao
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, 127 West ChangLe Road, Xi'an, 710032, Shaanxi, China
| | - Ying Zhan
- Department of Obstetrics and Gynecology, 518 Hospital of PLA, Xi'an, 710043, Shaanxi, China
| | - Ying Xu
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, 127 West ChangLe Road, Xi'an, 710032, Shaanxi, China
| | - Hong Yang
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, 127 West ChangLe Road, Xi'an, 710032, Shaanxi, China.
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Dentici ML, Bergonzini P, Scibelli F, Caciolo C, De Rose P, Cumbo F, Alesi V, Capolino R, Zanni G, Sinibaldi L, Novelli A, Tartaglia M, Digilio MC, Dallapiccola B, Vicari S, Alfieri P. 7q11.23 Microduplication Syndrome: Clinical and Neurobehavioral Profiling. Brain Sci 2020; 10:E839. [PMID: 33187326 PMCID: PMC7697259 DOI: 10.3390/brainsci10110839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 11/20/2022] Open
Abstract
7q11.23 Microduplication (dup7q11.23) syndrome is a rare autosomal dominant disorder due to a recurring 1.5 to 1.8 Mb duplication of the Williams-Beuren Syndrome critical region. Dup7q11.23 has been associated with several neuro-behavioral characteristics such as low cognitive and adaptive functioning, expressive language impairment, anxiety problems and autistic features. In the present study, we analyze the clinical features of ten individuals in which array-CGH detected dup7q11.23, spanning from 1.4 to 2.1 Mb. The clinical characteristics associated with dup7q11.23 are discussed with respect to its reciprocal deletion. Consistent with previous studies, we confirm that individuals with dup7q11.23 syndrome do not have a homogeneous clinical profile, although some recurring dysmorphic features were found, including macrocephaly, prominent forehead, elongated palpebral fissures, thin lip vermilion and microstomia. Minor congenital malformations include patent ductus arteriosus, cryptorchidism and pes planus. A common finding is hypotonia and joint laxity, resulting in mild motor delay. Neuropsychological and psychodiagnostic assessment confirm that mild cognitive impairment, expressive language deficits and anxiety are recurring neurobehavioral features. New insights into adaptive, psychopathological and neurodevelopmental profiles are discussed.
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Affiliation(s)
- Maria Lisa Dentici
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Paola Bergonzini
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Francesco Scibelli
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Cristina Caciolo
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Paola De Rose
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Francesca Cumbo
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Viola Alesi
- Laboratory of Medical Genetics, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (V.A.); (A.N.)
| | - Rossella Capolino
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Ginevra Zanni
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
- Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Lorenzo Sinibaldi
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Antonio Novelli
- Laboratory of Medical Genetics, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (V.A.); (A.N.)
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Maria Cristina Digilio
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Bruno Dallapiccola
- Scientific Directorate, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
- Department of Life Sciences and Public Health, Catholic University, 00168 Rome, Italy
| | - Paolo Alfieri
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
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Assessment of Multiplex Ligation-Dependent Probe Amplification (MLPA) as a diagnostic test for Egyptian patients with Williams-Beuren syndrome. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Ghaffari M, Tahmasebi Birgani M, Kariminejad R, Saberi A. Genotype–phenotype correlation and the size of microdeletion or microduplication of 7q11.23 region in patients with Williams‐Beuren syndrome. Ann Hum Genet 2018; 82:469-476. [DOI: 10.1111/ahg.12278] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/29/2018] [Accepted: 07/13/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Mahsa Ghaffari
- Departement of Medical Genetics, School of Medicine Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
| | - Maryam Tahmasebi Birgani
- Departement of Medical Genetics, School of Medicine Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
| | | | - Alihossein Saberi
- Departement of Medical Genetics, School of Medicine Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
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Klein-Tasman BP, Mervis CB. Autism Spectrum Symptomatology Among Children with Duplication 7q11.23 Syndrome. J Autism Dev Disord 2018; 48:1982-1994. [PMID: 29307037 PMCID: PMC6003247 DOI: 10.1007/s10803-017-3439-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Gold-standard diagnostic assessments of autism spectrum disorder (ASD) symptomatology were conducted on 63 children (mean CA: 8.81 years) with 7q11.23 duplication syndrome, one of the copy number variants identified by Sanders et al. (Neuron 70:863-885, 2011a) as associated with ASD. ASD classification rate was 39.6% for the Autism Diagnostic Interview-Revised and 25.4% for the Autism Diagnostic Observation Schedule-2 (ADOS-2). Based on these assessments combined with clinical judgment, 19.0% of children were diagnosed with ASD. Reasons for these discrepancies are discussed, as are differences in rate of diagnosis as a function of sex, age, and ADOS-2 module administered and differences in intellectual and adaptive behavior abilities as a function of presence or absence of ASD diagnosis and ADOS-2 module administered. Implications are addressed.
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Affiliation(s)
- Bonita P Klein-Tasman
- Department of Psychology, University of Wisconsin-Milwaukee, PO Box 413, Milwaukee, WI, 53201, USA.
| | - Carolyn B Mervis
- Department of Psychological and Brain Sciences, University of Louisville, 317 Life Sciences Building, Louisville, KY, 40292, USA
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Castiglia L, Husain RA, Marquardt I, Fink C, Liehr T, Serino D, Elia M, Coci EG. 7q11.23 microduplication syndrome: neurophysiological and neuroradiological insights into a rare chromosomal disorder. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2018; 62:359-370. [PMID: 29266505 DOI: 10.1111/jir.12457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/09/2017] [Accepted: 11/10/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The phenotypical consequence of the heterozygous chromosome 7q11.23 interstitial microdeletion is the Williams-Beuren syndrome, a very well-known genetic multi-systemic disorder. Much less is known about the reverse condition, the heterozygous interstitial microduplication of 7q11.23 region. The first molecular cytogenetic description was published in 2005, and only after several years were the reported patients numerous enough to attempt a description of a common phenotype. METHOD By using a broad multidisciplinary approach, we investigated 12 patients with this rare genetic anomaly. Ten of them harboured the duplication of the classical Williams-Beuren syndrome region and two a slightly larger duplication. Upon a detailed description of the clinical and psychological features, we used electroencephalography and magnetic resonance imaging to explore neurophysiological function and brain structures. RESULTS We analysed the clinical, psychological, neuroradiological and neurophysiological features of 12 yet-unpublished individuals affected by this rare genetic anomaly, focusing specifically on the last two aspects. Several structural abnormalities of the central nervous system were detected, like ventriculomegaly, hypotrophic cerebellum, hypotrophic corpus callosum and hypoplastic temporal lobes. Although only one of 12 individuals suffered from seizures during childhood, three others had abnormal electroencephalography findings prominent in the anterior brain regions, without any visible seizures to date. CONCLUSION Taken together, we enlarged the yet-underrepresented cohort in the literature of patients affected by 7q11.23 microduplication syndrome and shed further light on neuroradiological and neurophysiological aspects of this rare genetic syndrome.
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Affiliation(s)
- L Castiglia
- Oasi Institute for Research on Mental Retardation and Brain, Troina, Enna, Italy
| | - R A Husain
- Department of Neuropediatrics, Universitätsklinikum Jena, Jena, Thuringia, Germany
| | - I Marquardt
- Department of Neuropediatrics, Klinikum Oldenburg, Oldenburg, Lower Saxony, Germany
| | - C Fink
- Department of Radiology, Allgemeines Krankenhaus Celle, Celle, Lower Saxony, Germany
| | - T Liehr
- Institute of Human Genetics, Friedrich-Schiller-Universität Jena, Jena, Thuringia, Germany
| | - D Serino
- Department of Pediatric Neuro-Psichiatry, ASL CN1, Cuneo, Piedmont, Italy
| | - M Elia
- Oasi Institute for Research on Mental Retardation and Brain, Troina, Enna, Italy
| | - E G Coci
- Department of Paediatrics, Städtisches Klinikum Braunschweig, Braunschweig, Lower Saxony, Germany
- Department of Neuropediatrics, Universitaetsklinikum Bochum, Ruhr-Universitaet Bochum, Bochum, North Rhine-Westphalia, Germany
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Deshpande A, Weiss LA. Recurrent reciprocal copy number variants: Roles and rules in neurodevelopmental disorders. Dev Neurobiol 2018; 78:519-530. [PMID: 29575775 DOI: 10.1002/dneu.22587] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 02/08/2018] [Accepted: 03/13/2018] [Indexed: 12/14/2022]
Abstract
Deletions and duplications, called reciprocal CNVs when they occur at the same locus, are implicated in neurodevelopmental phenotypes ranging from morphological to behavioral. In this article, we propose three models of how differences in gene expression in deletion and duplication genotypes may result in deleterious phenotypes. To explore these models, we use examples of the similarities and differences in clinical phenotypes of five reciprocal CNVs known to cause neurodevelopmental disorders: 1q21.1, 7q11.23, 15q13.3, 16p11.2, and 22q11.2. These models and examples may inform some insights into better understanding of gene-phenotype relationships. © 2018 Wiley Periodicals, Inc. Develop Neurobiol 78: 519-530, 2018.
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Affiliation(s)
- Aditi Deshpande
- Department of Psychiatry, University of California, San Francisco, San Francisco, California, 94143.,Institute for Human Genetics, University of California, San Francisco, San Francisco, California, 94143.,Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, California, 94143
| | - Lauren A Weiss
- Department of Psychiatry, University of California, San Francisco, San Francisco, California, 94143.,Institute for Human Genetics, University of California, San Francisco, San Francisco, California, 94143.,Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, California, 94143
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11
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Crespi BJ, Procyshyn TL. Williams syndrome deletions and duplications: Genetic windows to understanding anxiety, sociality, autism, and schizophrenia. Neurosci Biobehav Rev 2017; 79:14-26. [DOI: 10.1016/j.neubiorev.2017.05.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 04/06/2017] [Accepted: 05/06/2017] [Indexed: 12/30/2022]
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Faundes V, Santa María L, Morales P, Curotto B, Parraguez MM. Distal 7q11.23 Duplication, an Emerging Microduplication Syndrome: A Case Report and Further Characterisation. Mol Syndromol 2016; 7:287-291. [PMID: 27867344 DOI: 10.1159/000448698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2016] [Indexed: 11/19/2022] Open
Abstract
Chromosome 7q11.23 duplication syndrome is a well-recognised syndrome which involves the duplication of the same genes located in the Williams-Beuren critical region. However, in 2010, 4 patients were reported with a microduplication only in the HIP1 and YWHAG genes. We refer to this as a distal 7q11.23 duplication (dup7q11.23D). Here, we report the fifth de novo patient with dup7q11.23D, whose symptoms may be explained by YWHAG overexpression as was demonstrated recently in mice and obese patients. Finally, further studies will be necessary to delineate this emerging microduplication syndrome.
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Affiliation(s)
- Víctor Faundes
- Laboratorio de Genética y Enfermedades Metabólicas, Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Lorena Santa María
- Laboratorio de Genética y Enfermedades Metabólicas, Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Paulina Morales
- Laboratorio de Genética y Enfermedades Metabólicas, Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Bianca Curotto
- Laboratorio de Genética y Enfermedades Metabólicas, Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
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Earhart BA, Williams ME, Zamora I, Randolph LM, Votava-Smith JK, Marcy SN. Phenotype of 7q11.23 duplication: A family clinical series. Am J Med Genet A 2016; 173:114-119. [DOI: 10.1002/ajmg.a.37966] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 08/04/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Beth A. Earhart
- USC University Center for Excellence in Developmental Disabilities; Children's Hospital Los Angeles; Los Angeles California
| | - Marian E. Williams
- Department of Pediatrics, USC University Center for Excellence in Developmental Disabilities; University of Southern California Keck School of Medicine of USC, Children's Hospital Los Angeles; Los Angeles California
| | - Irina Zamora
- Department of Pediatrics, USC University Center for Excellence in Developmental Disabilities; University of Southern California Keck School of Medicine of USC, Children's Hospital Los Angeles; Los Angeles California
| | - Linda Marie Randolph
- Division of Medical Genetics, Department of Pediatrics; University of Southern California, Children's Hospital Los Angeles; Los Angeles California
| | - Jodie K. Votava-Smith
- Division of Cardiology, Department of Pediatrics; University of Southern California, Children's Hospital Los Angeles; Los Angeles California
| | - Stephanie N. Marcy
- Department of Pediatrics, USC University Center for Excellence in Developmental Disabilities; University of Southern California Keck School of Medicine of USC, Children's Hospital Los Angeles; Los Angeles California
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Abbas E, Cox DM, Smith T, Butler MG. The 7q11.23 Microduplication Syndrome: A Clinical Report with Review of Literature. J Pediatr Genet 2016; 5:129-40. [PMID: 27617154 DOI: 10.1055/s-0036-1584361] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 04/11/2016] [Indexed: 12/11/2022]
Abstract
We report a 14-year-old adolescent girl with selective mutism (SM) and a 7q11.23 microduplication detected by chromosomal microarray (CMA) analysis and reviewed the literature from 18 published clinical reports. Our patient had specific phobias, SM, extreme anxiety, obesity, cutis marmorata, and a round appearing face with a short neck and over folded ears. We reviewed the published clinical, cognitive, behavioral, and cytogenetic findings grouped by speech and language delay, growth and development, craniofacial, clinical, and behavior and cognitive features due to the 7q11.23 microduplication. This microduplication syndrome is characterized by speech delay (91%), social anxiety (42%), attention deficit hyperactivity disorder (ADHD, 37%), autism spectrum disorder (29%), and separation anxiety (13%). Other findings include abnormal brain imaging (80%), congenital heart and vascular defects (54%), and mild intellectual disability (38%). We then compared the phenotype with Williams-Beuren syndrome (WBS) which is due to a deletion of the same chromosome region. Both syndromes have abnormal brain imaging, hypotonia, delayed motor development, joint laxity, mild intellectual disability, ADHD, autism, and poor visuospatial skills but opposite or dissimilar findings regarding speech and behavioral patterns, cardiovascular problems, and social interaction. Those with WBS are prone to have hyperverbal speech, lack of stranger anxiety, and supravalvular aortic stenosis while those with the 7q11.23 microduplication have speech delay, SM, social anxiety, and are prone to aortic dilatation.
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Affiliation(s)
- Elham Abbas
- Departments of Psychiatry and Behavioral Sciences, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Devin M Cox
- Departments of Psychiatry and Behavioral Sciences, University of Kansas Medical Center, Kansas City, Kansas, United States; Department of Pediatrics, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Teri Smith
- Departments of Psychiatry and Behavioral Sciences, University of Kansas Medical Center, Kansas City, Kansas, United States
| | - Merlin G Butler
- Departments of Psychiatry and Behavioral Sciences, University of Kansas Medical Center, Kansas City, Kansas, United States; Department of Pediatrics, University of Kansas Medical Center, Kansas City, Kansas, United States
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Li L, Huang L, Luo Y, Huang X, Lin S, Fang Q. Differing Microdeletion Sizes and Breakpoints in Chromosome 7q11.23 in Williams-Beuren Syndrome Detected by Chromosomal Microarray Analysis. Mol Syndromol 2016; 6:268-75. [PMID: 27022327 DOI: 10.1159/000443942] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2015] [Indexed: 01/01/2023] Open
Abstract
Williams-Beuren syndrome (WBS) manifests as supravalvular aortic stenosis, intellectual disability, developmental delay and characteristic facial features. The common WBS deletion region ranges from 1.55 to 1.84 Mb and primarily contains the ELN gene. We analyzed 10 patients diagnosed with 7q11.23 microdeletion syndrome by chromosomal microarray analysis. The clinical features of these patients varied from classic WBS to normal phenotype. All 10 patients exhibited different sizes and breakpoints of chromosome microdeletions ranging from 44 kb to 9.88 Mb. The hemizygosity of the ELN gene was detected in 7 patients, while a normal ELN gene was present in 3 other patients with small deletions. We observed that the phenotypic features of WBS varied in fetuses, children and adults, influenced by the genes, deletion size and breakpoint. Our findings provide more information on the genotype-phenotype correlations of WBS. However, further research is needed to explore the size and breakpoint effect and functions of the genes on chromosome 7q11.23.
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Affiliation(s)
- Lin Li
- Department of Gynecology and Obstetrics, Fetal Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Linhuan Huang
- Department of Gynecology and Obstetrics, Fetal Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Yanmin Luo
- Department of Gynecology and Obstetrics, Fetal Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Xuan Huang
- Department of Gynecology and Obstetrics, Fetal Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Shaobin Lin
- Department of Gynecology and Obstetrics, Fetal Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Qun Fang
- Department of Gynecology and Obstetrics, Fetal Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
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Morris CA, Mervis CB, Paciorkowski AP, Abdul-Rahman O, Dugan SL, Rope AF, Bader P, Hendon LG, Velleman SL, Klein-Tasman BP, Osborne LR. 7q11.23 Duplication syndrome: Physical characteristics and natural history. Am J Med Genet A 2015; 167A:2916-35. [PMID: 26333794 PMCID: PMC5005957 DOI: 10.1002/ajmg.a.37340] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 08/08/2015] [Indexed: 01/17/2023]
Abstract
In order to describe the physical characteristics, medical complications, and natural history of classic 7q11.23 duplication syndrome [hereafter Dup7 (MIM 609757)], reciprocal duplication of the region deleted in Williams syndrome [hereafter WS (MIM 194050)], we systematically evaluated 53 individuals aged 1.25-21.25 years and 11 affected adult relatives identified in cascade testing. In this series, 27% of probands with Dup7 had an affected parent. Seven of the 26 de novo duplications that were examined for inversions were inverted; in all seven cases one of the parents had the common inversion polymorphism of the WS region. We documented the craniofacial features of Dup7: brachycephaly, broad forehead, straight eyebrows, broad nasal tip, low insertion of the columella, short philtrum, thin upper lip, minor ear anomalies, and facial asymmetry. Approximately 30% of newborns and 50% of older children and adults had macrocephaly. Abnormalities were noted on neurological examination in 88.7% of children, while 81.6% of MRI studies showed structural abnormalities such as decreased cerebral white matter volume, cerebellar vermis hypoplasia, and ventriculomegaly. Signs of cerebellar dysfunction were found in 62.3%, hypotonia in 58.5%, Developmental Coordination Disorder in 74.2%, and Speech Sound Disorder in 82.6%. Behavior problems included anxiety disorders, ADHD, and oppositional disorders. Medical problems included seizures, 19%; growth hormone deficiency, 9.4%; patent ductus arteriosus, 15%; aortic dilation, 46.2%; chronic constipation, 66%; and structural renal anomalies, 18%. We compare these results to the WS phenotype and offer initial recommendations for medical evaluation and surveillance of individuals who have Dup7.
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Affiliation(s)
- Colleen A. Morris
- Department of Pediatrics, University of Nevada School of Medicine, Las Vegas, NV
| | - Carolyn B. Mervis
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, KY
| | - Alex P. Paciorkowski
- Center for Neural Development and Disease, Departments of Neurology, Pediatrics, and Biomedical Genetics, University of Rochester Medical Center, Rochester, NY
| | - Omar Abdul-Rahman
- Department of Pediatrics University of Mississippi Medical Center, Jackson, MS
| | - Sarah L. Dugan
- Division of Medical Genetics, University of Utah, Salt Lake City, UT
| | - Alan F. Rope
- Department of Medical Genetics, Kaiser Permanente, Portland OR
| | | | - Laura G. Hendon
- Department of Pediatrics University of Mississippi Medical Center, Jackson, MS
| | - Shelley L. Velleman
- Department of Communication Sciences and Disorders, University of Vermont, Burlington, VT
| | | | - Lucy R. Osborne
- Departments of Medicine and Molecular Genetics and Institute of Medical Science, University of Toronto, Toronto ON, Canada
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Barnett CP, van Bon BWM. Monogenic and chromosomal causes of isolated speech and language impairment. J Med Genet 2015; 52:719-29. [DOI: 10.1136/jmedgenet-2015-103161] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 06/11/2015] [Indexed: 12/26/2022]
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Patil SJ, Salian S, Bhat V, Girisha KM, Shrivastava Y, Vs K, Sapare A. Familial 7q11.23 duplication with variable phenotype. Am J Med Genet A 2015; 167A:2727-30. [PMID: 26109321 DOI: 10.1002/ajmg.a.37226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 06/10/2015] [Indexed: 11/10/2022]
Abstract
Chromosomal microdeletions and microduplications are known to cause variable clinical features ranging from apparently normal phenotype to intellectual disability, multiple congenital anomalies, and/or other variable clinical features. 7q11.23 region deletion is the cause for Williams-Beuren syndrome and duplication of same region 7q11.23 causes distinguishable clinical phenotype. Familial inheritance is known for both microdeletion and microduplication of 7q11.23 region. Here, we report a patient of paternally inherited 7q11.23 microduplication with developmental delay, macrocephaly, and structural brain malformations.
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Affiliation(s)
- Siddaramappa J Patil
- Department of Medical Genetics, Narayana Multispecialty Hospital, Bangalore, India
| | - Smrithi Salian
- Department of Medical Genetics, Kasturba Medical College, Manipal University, Manipal, India
| | - Venkaraman Bhat
- Department of Radiology, Narayana Multispecialty Hospital, Bangalore, India
| | - Katta Mohan Girisha
- Department of Medical Genetics, Kasturba Medical College, Manipal University, Manipal, India
| | - Yash Shrivastava
- Department of Pediatric Cardiology, Narayana Institute of Cardiac Sciences, Bangalore, India
| | - Kiran Vs
- Department of Pediatric Cardiology, Narayana Institute of Cardiac Sciences, Bangalore, India
| | - Anilkumar Sapare
- Department of Pediatrics, Narayana Multispecialty Hospital, Bangalore, India
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Mervis CB, Klein-Tasman BP, Huffman MJ, Velleman SL, Pitts CH, Henderson DR, Woodruff-Borden J, Morris CA, Osborne LR. Children with 7q11.23 duplication syndrome: psychological characteristics. Am J Med Genet A 2015; 167:1436-50. [PMID: 25900101 DOI: 10.1002/ajmg.a.37071] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 03/08/2015] [Indexed: 12/11/2022]
Abstract
To begin to delineate the psychological characteristics associated with classic 7q11.23 duplication syndrome (duplication of the classic Williams syndrome region; hereafter classic Dup7), we tested 63 children with classic Dup7 aged 4-17 years. Sixteen toddlers aged 18-45 months with classic Dup7 and 12 adults identified by cascade testing also were assessed. For the child group, median General Conceptual Ability (similar to IQ) on the Differential Ability Scales-II was 85.0 (low average), with a range from severe disability to high average ability. Median reading and mathematics achievement standard scores were at the low average to average level, with a range from severe impairment to high average or superior ability. Adaptive behavior was considerably more limited; median Scales of Independent Behavior-Revised Broad Independence standard score was 62.0 (mild impairment), with a range from severe adaptive impairment to average adaptive ability. Anxiety disorders were common, with 50.0% of children diagnosed with Social Phobia, 29.0% with Selective Mutism, 12.9% with Separation Anxiety Disorder, and 53.2% with Specific Phobia. In addition, 35.5% were diagnosed with Attention Deficit/Hyperactivity Disorder and 24.2% with Oppositional Defiant Disorder or Disruptive Behavior Disorder-Not Otherwise Specified. 33.3% of the children screened positive for a possible Autism Spectrum Disorder and 82.3% were diagnosed with Speech Sound Disorder. We compare these findings to previously reported results for children with Williams syndrome and argue that genotype/phenotype studies involving the Williams syndrome region offer important opportunities to understand the contribution of genes in this region to common disorders affecting the general population.
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Affiliation(s)
- Carolyn B Mervis
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky
| | | | - Myra J Huffman
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky
| | - Shelley L Velleman
- Department of Communication Sciences and Disorders, University of Vermont, Burlington, Vermont
| | - C Holley Pitts
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky
| | - Danielle R Henderson
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky
| | - Janet Woodruff-Borden
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky
| | - Colleen A Morris
- Department of Pediatrics, University of Nevada School of Medicine, Las Vegas, Nevada
| | - Lucy R Osborne
- Departments of Medicine and Molecular Genetics and Institute of Medical Science, University of Toronto, Toronto, ON, Canada
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Coutton C, Dieterich K, Satre V, Vieville G, Amblard F, David M, Cans C, Jouk PS, Devillard F. Array-CGH in children with mild intellectual disability: a population-based study. Eur J Pediatr 2015; 174:75-83. [PMID: 24985125 DOI: 10.1007/s00431-014-2367-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 06/17/2014] [Accepted: 06/19/2014] [Indexed: 01/24/2023]
Abstract
UNLABELLED Intellectual disability (ID) is characterized by limitation in intellectual function and adaptive behavior, with onset in childhood. Frequent identifiable causes of ID originate from chromosomal imbalances. During the last years, array-CGH has successfully contributed to improve the diagnostic detection rate of genetic abnormalities in patients with ID. Most array-CGH studies focused on patients with moderate or severe intellectual disability. Studies on genetic etiology in children with mild intellectual disability (ID) are very rare. We performed array-CGH analysis in 66 children with mild intellectual disability assessed in a population-based study and for whom no genetic etiology was identified. We found one or more copy number variations (CNVs) in 20 out of 66 (~30 %) patients with a mild ID. In eight of them (~12 %), the CNVs were certainly responsible for the phenotype and in six they were potentially pathogenic for ID. Altogether, array-CGH helped to determine the etiology of ID in 14 patients (~21 %). CONCLUSION Our results underscore the clinical relevance of array-CGH to investigate the etiology of isolated idiopathic mild ID in patients or associated with even subtle dysmorphic features or congenital malformations.
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Affiliation(s)
- Charles Coutton
- Laboratoire de Génétique Chromosomique, Département de Génétique et Procréation, Hôpital Couple Enfant, CHU Grenoble, 38700, Grenoble, France,
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Crespi BJ, Hurd PL. Cognitive-behavioral phenotypes of Williams syndrome are associated with genetic variation in the GTF2I gene, in a healthy population. BMC Neurosci 2014; 15:127. [PMID: 25429715 PMCID: PMC4247780 DOI: 10.1186/s12868-014-0127-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 11/13/2014] [Indexed: 11/10/2022] Open
Abstract
Background Individuals with Williams syndrome, a neurogenetic condition caused by deletion of a set of genes at chromosomal location 7q11.23, exhibit a remarkable suite of traits including hypersociality with high, nonselective friendliness and low social anxiety, expressive language relatively well-developed but under-developed social-communication skills overall, and reduced visual-spatial abilities. Deletions and duplications of the Williams-syndrome region have also been associated with autism, and with schizophrenia, two disorders centrally involving social cognition. Several lines of evidence have linked the gene GTF2I (General Transcription Factor IIi) with the social phenotypes of Williams syndrome, but a role for this gene in sociality within healthy populations has yet to be investigated. Results We genotyped a large set of healthy individuals for two single-nucleotide polymorphisms in the GTF2I gene that have recently been significantly associated with autism, and thus apparently exhibit functional effects on autism-related social phenotypes. GTF2I genotypes for these SNPs showed highly significant association with low social anxiety combined with reduced social-communication abilities, which represents a metric of the Williams-syndrome cognitive profile as described from previous studies. Conclusions These findings implicate the GTF2I gene in the neurogenetic basis of social communication and social anxiety, both in Williams syndrome and among individuals in healthy populations.
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Affiliation(s)
- Bernard J Crespi
- Department of Biology, Simon Fraser University, 8888 University Drive, Burnaby V5A 1S6, , BC, Canada.
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Parrott A, James J, Goldenberg P, Hinton RB, Miller E, Shikany A, Aylsworth AS, Kaiser-Rogers K, Ferns SJ, Lalani SR, Ware SM. Aortopathy in the 7q11.23 microduplication syndrome. Am J Med Genet A 2014; 167A:363-70. [DOI: 10.1002/ajmg.a.36859] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ashley Parrott
- Department of Pediatrics; Cincinnati Children's Hospital Medical Center; Heart Institute; Cincinnati Ohio
| | - Jeanne James
- Department of Pediatrics; Cincinnati Children's Hospital Medical Center; Heart Institute; Cincinnati Ohio
| | - Paula Goldenberg
- Department of Pediatrics; Cincinnati Children's Hospital Medical Center; Heart Institute; Cincinnati Ohio
| | - Robert B. Hinton
- Department of Pediatrics; Cincinnati Children's Hospital Medical Center; Heart Institute; Cincinnati Ohio
| | - Erin Miller
- Department of Pediatrics; Cincinnati Children's Hospital Medical Center; Heart Institute; Cincinnati Ohio
| | - Amy Shikany
- Department of Pediatrics; Cincinnati Children's Hospital Medical Center; Heart Institute; Cincinnati Ohio
| | - Arthur S. Aylsworth
- Department of Pediatrics; University of North Carolina; Chapel Hill North Carolina
- Department of Genetics; University of North Carolina; Chapel Hill North Carolina
| | - Kathleen Kaiser-Rogers
- Department of Pediatrics; University of North Carolina; Chapel Hill North Carolina
- Department of Genetics; University of North Carolina; Chapel Hill North Carolina
- Department of Pathology and Laboratory Medicine; University of North Carolina; Chapel Hill North Carolina
| | - Sunita J. Ferns
- Department of Pediatrics; University of North Carolina; Chapel Hill North Carolina
| | - Seema R. Lalani
- Department of Molecular and Human Genetics; Baylor College of Medicine; Houston Texas
| | - Stephanie M. Ware
- Department of Pediatrics and Medical and Molecular Genetics; Indiana University School of Medicine; Indianapolis Indiana
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Damasceno ML, Cristante AF, Marcon RM, Barros Filho TEPD. Prevalence of scoliosis in Williams-Beuren syndrome patients treated at a regional reference center. Clinics (Sao Paulo) 2014; 69:452-6. [PMID: 25029575 PMCID: PMC4081883 DOI: 10.6061/clinics/2014(07)02] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 12/20/2013] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE This study assessed the prevalence of scoliosis and the patterns of scoliotic curves in patients with Williams-Beuren syndrome. Williams-Beuren syndrome is caused by a chromosome 7q11.23 deletion in a region containing 28 genes, with the gene encoding elastin situated approximately at the midpoint of the deletion. Mutation of the elastin gene leads to phenotypic changes in patients, including neurodevelopmental impairment of varying degrees, characteristic facies, cardiovascular abnormalities, hypercalcemia, urological dysfunctions, and bone and joint dysfunctions. METHODS A total of 41 patients diagnosed with Williams-Beuren syndrome, who were followed up at the genetics ambulatory center of a large referral hospital, were included in the study. There were 25 male subjects. The patients were examined and submitted to radiographic investigation for Cobb angle calculation. RESULTS It was observed that 14 patients had scoliosis; of these 14 patients, 10 were male. The pattern of deformity in younger patients was that of flexible and simple curves, although adults presented with double and triple curves. Statistical analysis showed no relationships between scoliosis and age or sex. CONCLUSION This study revealed a prevalence of scoliosis in patients with Williams-Beuren syndrome of 34.1%; however, age and sex were not significantly associated with scoliosis or with the severity of the curves.
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Affiliation(s)
- Marcelo Loquette Damasceno
- Department of Orthopaedics and Traumatology, Spine Surgery Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (IOT-HCFMUSP), São Paulo, SP, Brazil
| | - Alexandre Fogaça Cristante
- Instituto de Ortopedia e Traumatologia, Spine Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (IOT-HCFMUSP), São Paulo, SP, Brazil
| | - Raphael Martus Marcon
- Instituto de Ortopedia e Traumatologia, Spine Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (IOT-HCFMUSP), São Paulo, SP, Brazil
| | - Tarcísio Eloy Pessoa de Barros Filho
- Instituto de Ortopedia e Traumatologia, Departamento de Ortopedia e Traumatologia, Disciplina de Ortopedia Geral, Grupo de Oncologia Ortopédica, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (IOT-HCFMUSP), São Paulo, SP, Brazil
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25
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Zarate YA, Lepard T, Sellars E, Kaylor JA, Alfaro MP, Sailey C, Schaefer GB, Collins RT. Cardiovascular and genitourinary anomalies in patients with duplications within the Williams syndrome critical region: Phenotypic expansion and review of the literature. Am J Med Genet A 2014; 164A:1998-2002. [DOI: 10.1002/ajmg.a.36601] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 04/11/2014] [Indexed: 01/19/2023]
Affiliation(s)
- Yuri A. Zarate
- Division of Genetics; Arkansas Children's Hospital; Little Rock Arkansas
| | - Tiffany Lepard
- Division of Genetics; Arkansas Children's Hospital; Little Rock Arkansas
| | - Elizabeth Sellars
- Division of Genetics; Arkansas Children's Hospital; Little Rock Arkansas
| | - Julie A. Kaylor
- Molecular Genetic Pathology; Arkansas Children's Hospital; Little Rock Arkansas
| | - Maria P. Alfaro
- Molecular Genetic Pathology; Arkansas Children's Hospital; Little Rock Arkansas
| | - Charles Sailey
- Department of Pathology; The University of Arkansas for Medical Sciences; Little Rock Arkansas
| | | | - R. Thomas Collins
- Division of Cardiology; Arkansas Children's Hospital; Little Rock Arkansas
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Chromosomal Microarrays in Prenatal Diagnosis: Time for a Change of Policy? MICROARRAYS 2013; 2:304-17. [PMID: 27605194 PMCID: PMC5003441 DOI: 10.3390/microarrays2040304] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 11/19/2013] [Accepted: 11/27/2013] [Indexed: 01/26/2023]
Abstract
Microarrays have replaced conventional karyotyping as a first-tier test for unbalanced chromosome anomalies in postnatal cytogenetics mainly due to their unprecedented resolution facilitating the detection of submicroscopic copy number changes at a rate of 10-20% depending on indication for testing. A number of studies have addressed the performance of microarrays for chromosome analyses in high risk pregnancies due to abnormal ultrasound findings and reported an excess detection rate between 5% and 10%. In low risk pregnancies, clear pathogenic copy number changes at the submicroscopic level were encountered in 1% or less. Variants of unclear clinical significance, unsolicited findings, and copy number changes with variable phenotypic consequences are the main issues of concern in the prenatal setting posing difficult management questions. The benefit of microarray testing may be limited in pregnancies with only moderately increased risks (advanced maternal age, positive first trimester test). It is suggested to not change the current policy of microarray application in prenatal diagnosis until more data on the clinical significance of copy number changes are available.
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