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Verbesselt J, Walsh LK, Mitchel MW, Taylor CM, Finucane BM, Breckpot J, Zink I, Swillen A. Association of behavioural and social-communicative profiles in children with 16p11.2 copy number variants: a multi-site study. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2024; 68:969-984. [PMID: 38657658 DOI: 10.1111/jir.13141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/29/2024] [Accepted: 03/29/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND Despite the established knowledge that recurrent copy number variants (CNVs) at the 16p11.2 locus BP4-BP5 confer risk for behavioural and language difficulties, limited research has been conducted on the association between behavioural and social-communicative profiles. The current study aims to further delineate the prevalence, nature and severity of, and the association between, behavioural and social-communicative features of school-aged children with 16p11.2 deletion syndrome (16p11.2DS) and 16p11.2 duplication (16p11.2Dup). METHODS A total of 68 individuals (n = 47 16p11.2DS and n = 21 16p11.2Dup) aged 6-17 years participated. Standardised intelligence tests were administered, and behavioural and social-communicative skills were assessed by standardised questionnaires. Scores of both groups were compared with population norms and across CNVs. The influence of confounding factors was investigated, and correlation analyses were performed. RESULTS Compared with the normative sample, children with 16p11.2DS showed high rates of social responsiveness (67%) and communicative problems (69%), while approximately half (52%) of the patients displayed behavioural problems. Children with 16p11.2Dup demonstrated even higher rates of social-communicative problems (80-90%) with statistically significantly more externalising and overall behavioural challenges (89%). In both CNV groups, there was a strong positive correlation between behavioural and social-communicative skills. CONCLUSIONS School-aged children with 16p11.2 CNVs show high rates of behavioural, social responsiveness and communicative problems compared with the normative sample. These findings point to the high prevalence of autistic traits and diagnoses in these CNV populations. Moreover, there is a high comorbidity between behavioural and social-communicative problems. Patients with difficulties in both domains are vulnerable and need closer clinical follow-up and care.
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Affiliation(s)
- J Verbesselt
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Research Group Experimental Oto-Rhino-Laryngology (ExpORL), Department of Neurosciences, Leuven Brain Institute, KU Leuven, Leuven, Belgium
| | - L K Walsh
- Autism & Developmental Medicine Institute, Geisinger, Lewisburg, PA, USA
| | - M W Mitchel
- Autism & Developmental Medicine Institute, Geisinger, Lewisburg, PA, USA
| | - C M Taylor
- Autism & Developmental Medicine Institute, Geisinger, Lewisburg, PA, USA
| | - B M Finucane
- Autism & Developmental Medicine Institute, Geisinger, Lewisburg, PA, USA
| | - J Breckpot
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Centre for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - I Zink
- Research Group Experimental Oto-Rhino-Laryngology (ExpORL), Department of Neurosciences, Leuven Brain Institute, KU Leuven, Leuven, Belgium
- MUCLA, Department of Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium
| | - A Swillen
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Centre for Human Genetics, University Hospitals Leuven, Leuven, Belgium
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Nascimento LPC, Mergener R, Nunes MR, Muniz VF, Catao JR, da Silveira AKB, Dorfman LE, Graziadio C, Zen PRG. 16p11.2 Microduplication Syndrome with Increased Fluid in the Cisterna: Coincidence or Phenotype Extension? Genes (Basel) 2023; 14:1583. [PMID: 37628634 PMCID: PMC10454344 DOI: 10.3390/genes14081583] [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: 06/29/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
We report the first case of a child with 16p11.2 microduplication syndrome with increased fluid in the cisterna magna seen on magnetic resonance imaging (MRI). This finding may correspond to a Blake's Pouch Cyst (BPC) or a Mega Cisterna Magna (MCM), being impossible to differentiate through image examination. The molecular duplication was diagnosed using chromosomal microarray analysis with single nucleotide polymorphism (SNP). We review the clinical and neuroimaging features in published case reports in order to observe the findings described in the literature so far and present a skull three-dimensional model to contribute to a better understanding. Despite the variable expressivity of the syndrome being well known, there is no case described in the available literature that mentions the association of 16p11.2 microduplication and the presence of BPC or MCM seen in neuroimaging exams. This finding may represent an extension of the phenotype not yet reported or may present itself as a coincidence in a child with various malformations.
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Affiliation(s)
- Lívia Polisseni Cotta Nascimento
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil; (L.P.C.N.); (R.M.); (V.F.M.)
- Medical Residency Committee, Federal University of Health Sciences of Porto Alegre (UFCSPA)/Brotherhood of the Santa Casa de Misericórdia of Porto Alegre (ISCMPA), Porto Alegre 90050-170, RS, Brazil;
| | - Rafaella Mergener
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil; (L.P.C.N.); (R.M.); (V.F.M.)
| | - Marcela Rodrigues Nunes
- Medical Residency Committee, Federal University of Health Sciences of Porto Alegre (UFCSPA)/Brotherhood of the Santa Casa de Misericórdia of Porto Alegre (ISCMPA), Porto Alegre 90050-170, RS, Brazil;
| | - Victória Feitosa Muniz
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil; (L.P.C.N.); (R.M.); (V.F.M.)
| | - Juliana Rossi Catao
- Medicine Course, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil;
| | - Ana Kalise Böttcher da Silveira
- Undergraduate Program in Biomedical Science, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil;
| | - Luiza Emy Dorfman
- Health School, University of Vale do Rio dos Sinos (Unisinos), São Leopoldo 93022-750, RS, Brazil;
| | - Carla Graziadio
- Department of Clinical Medicine, Federal University of Health Sciences of Porto Alegre (UFCSPA)/Brotherhood of the Santa Casa de Misericórdia of Porto Alegre (ISCMPA), Porto Alegre 90050-170, RS, Brazil;
| | - Paulo Ricardo Gazzola Zen
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre 90050-170, RS, Brazil; (L.P.C.N.); (R.M.); (V.F.M.)
- Department of Clinical Medicine, Federal University of Health Sciences of Porto Alegre (UFCSPA)/Brotherhood of the Santa Casa de Misericórdia of Porto Alegre (ISCMPA), Porto Alegre 90050-170, RS, Brazil;
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Tang J, Zhou B, Luo S. Netherton syndrome with chromosome 16p11.2 microduplication in a Chinese infant. Int J Dermatol 2023; 62:e168-e170. [PMID: 36331057 DOI: 10.1111/ijd.16495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 08/13/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Jinling Tang
- Department of Dermatology, Hunan Children's Hospital, Changsha, China
| | - Bin Zhou
- Department of Dermatology, Hunan Children's Hospital, Changsha, China
| | - Shuaihantian Luo
- Department of Dermatology, Second Xiangya Hospital of Central South University, Changsha, China
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Bristow GC, Thomson DM, Openshaw RL, Mitchell EJ, Pratt JA, Dawson N, Morris BJ. 16p11 Duplication Disrupts Hippocampal-Orbitofrontal-Amygdala Connectivity, Revealing a Neural Circuit Endophenotype for Schizophrenia. Cell Rep 2021; 31:107536. [PMID: 32320645 DOI: 10.1016/j.celrep.2020.107536] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 02/18/2020] [Accepted: 03/28/2020] [Indexed: 02/07/2023] Open
Abstract
Chromosome 16p11.2 duplications dramatically increase risk for schizophrenia, but the mechanisms remain largely unknown. Here, we show that mice with an equivalent genetic mutation (16p11.2 duplication mice) exhibit impaired hippocampal-orbitofrontal and hippocampal-amygdala functional connectivity. Expression of schizophrenia-relevant GABAergic cell markers (parvalbumin and calbindin) is selectively decreased in orbitofrontal cortex, while somatostatin expression is decreased in lateral amygdala. When 16p11.2 duplication mice are tested in cognitive tasks dependent on hippocampal-orbitofrontal connectivity, performance is impaired in an 8-arm maze "N-back" working memory task and in a touchscreen continuous performance task. Consistent with hippocampal-amygdala dysconnectivity, deficits in ethologically relevant social behaviors are also observed. Overall, the cellular/molecular, brain network, and behavioral alterations markedly mirror those observed in schizophrenia patients. Moreover, the data suggest that 16p11.2 duplications selectively impact hippocampal-amygdaloid-orbitofrontal circuitry, supporting emerging ideas that dysfunction in this network is a core element of schizophrenia and defining a neural circuit endophenotype for the disease.
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Affiliation(s)
- Greg C Bristow
- Department of Biomedical and Life Sciences, University of Lancaster, Lancaster LA1 4YW, UK
| | - David M Thomson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
| | - Rebecca L Openshaw
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, West Medical Building, Glasgow G12 8QQ, UK
| | - Emma J Mitchell
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
| | - Judith A Pratt
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
| | - Neil Dawson
- Department of Biomedical and Life Sciences, University of Lancaster, Lancaster LA1 4YW, UK
| | - Brian J Morris
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, West Medical Building, Glasgow G12 8QQ, UK.
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Xie H, Liu F, Zhang Y, Chen Q, Shangguan S, Gao Z, Wu N, Wang J, Cui X, Wang L, Chen X. Neurodevelopmental trajectory and modifiers of 16p11.2 microdeletion: A follow-up study of four Chinese children carriers. Mol Genet Genomic Med 2020; 8:e1485. [PMID: 32870608 PMCID: PMC7667312 DOI: 10.1002/mgg3.1485] [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: 07/20/2020] [Accepted: 08/05/2020] [Indexed: 01/06/2023] Open
Abstract
Background Neurodevelopmental disorders (NDDs) are a group of disorders with high genetic and phenotypic heterogeneities. The 16p11.2 microdeletion has been implicated as an important genetic risk factor for NDDs. Methods Multiple genetic tests were used to detect the 16p11.2 microdeletion from 918 Chinese children with NDDs. Targeted sequencing of genes in the 16p11.2 interval was performed in all carriers of the 16p11.2 microdeletion, and whole‐genome expression profiling analysis was performed for the patient carriers and normal carriers in their intra‐family. Results Three patients carrying the 16p11.2 microdeletion were screened out, indicating a frequency of 0.33% for the 16p11.2 microdeletion in this cohort. We reviewed the neurodevelopmental trajectories of the 16p11.2 microdeletion carriers from childhood to puberty and confirmed that this microdeletion was associated with abnormal neurodevelopment, with varied neurodevelopmental phenotypes. A differential PRRT2 genotype (rs10204, T>C) was identified between patients and normal carriers of the 16p11.2 microdeletion. Moreover, the determination of differential whole‐genome expression profiling demonstrated the destruction of the top‐ranked network in neurogenesis and accounted for observation of abnormal neurodevelopmental phenotypes in the 16p11.2 microdeletion carriers. Conclusions We have provided the frequency of the 16p11.2 microdeletion in a Chinese pediatric NDD cohort with a variable NDD phenotype from childhood to puberty, which is useful for Chinese geneticists/pediatricians to conduct the 16p11.2 microdeletion testing in children with NDDs.
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Affiliation(s)
- Hua Xie
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China
| | - Fang Liu
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China.,Graduate School of Peking, Union Medical College, Beijing, China
| | - Yu Zhang
- Department of Laboratory Center, Capital Institute of Pediatrics, Beijing, China
| | - Qian Chen
- Department of Neurology, Affiliated Children's Hospital of Capital Institute of Pediatrics, Beijing, China
| | - Shaofang Shangguan
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China
| | - Zhijie Gao
- Department of Neurology, Affiliated Children's Hospital of Capital Institute of Pediatrics, Beijing, China
| | - Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, China.,Key laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, China
| | - Jian Wang
- Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaodai Cui
- Department of Laboratory Center, Capital Institute of Pediatrics, Beijing, China
| | - Lin Wang
- Department of Preventive Health Care, Affiliated Children's Hospital of Capital Institute of Pediatrics, Beijing, China
| | - Xiaoli Chen
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China.,Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
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