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Bayat A, Grimes H, de Boer E, Herlin MK, Dahl RS, Lund ICB, Bayat M, Bolund ACS, Gjerulfsen CE, Gregersen PA, Zilmer M, Juhl S, Cebula K, Rahikkala E, Maystadt I, Peron A, Vignoli A, Alfano RM, Stanzial F, Benedicenti F, Currò A, Luk HM, Jouret G, Zurita E, Heuft L, Schnabel F, Busche A, Veenstra-Knol HE, Tkemaladze T, Vrielynck P, Lederer D, Platzer K, Ockeloen CW, Goel H, Low KJ. Natural history of adults with KBG syndrome: A physician-reported experience. Genet Med 2024; 26:101170. [PMID: 38818797 DOI: 10.1016/j.gim.2024.101170] [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: 01/31/2024] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 06/01/2024] Open
Abstract
PURPOSE KBG syndrome (KBGS) is a rare neurodevelopmental syndrome caused by haploinsufficiency of ANKRD11. The childhood phenotype is extensively reported but limited for adults. Thus, we aimed to delineate the clinical features of KBGS. METHODS We collected physician-reported data of adults with molecularly confirmed KBGS through an international collaboration. Moreover, we undertook a systematic literature review to determine the scope of previously reported data. RESULTS The international collaboration identified 36 adults from 31 unrelated families with KBGS. Symptoms included mild/borderline intellectual disability (n = 22); gross and/or fine motor difficulties (n = 15); psychiatric and behavioral comorbidities including aggression, anxiety, reduced attention span, and autistic features (n = 26); nonverbal (n = 3), seizures with various seizure types and treatment responses (n = 10); ophthalmological comorbidities (n = 20). Cognitive regression during adulthood was reported once. Infrequent features included dilatation of the ascending aorta (n = 2) and autoimmune conditions (n = 4). Education, work, and residence varied, and the diversity of professional and personal roles highlighted the range of abilities seen. The literature review identified 154 adults reported across the literature, and we have summarized the features across both data sets. CONCLUSION Our study sheds light on the long-term neurodevelopmental outcomes, seizures, behavioral and psychiatric features, and education, work, and living arrangements for adults with KBGS.
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Affiliation(s)
- Allan Bayat
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark; Department of Epilepsy Genetics and Personalized Medicine, Danish Epilepsy Center, Dianalund, Denmark; Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
| | - Hannah Grimes
- Department of Clinical Genetics, University Hospital Bristol and Weston NHS Foundation Trust, Bristol, United Kingdom
| | - Elke de Boer
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands; Department of Clinical Genetics, Erasmus Medical Centre - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Morten Krogh Herlin
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | - Rebekka Staal Dahl
- Department of Epilepsy Genetics and Personalized Medicine, Danish Epilepsy Center, Dianalund, Denmark
| | - Ida Charlotte Bay Lund
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Michael Bayat
- Department of Neurology, Aarhus University Hospital, Aarhus, Denmark; Center for Rare Diseases, Department of Pediatric and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Pernille Axél Gregersen
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Center for Rare Diseases, Department of Pediatric and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Monica Zilmer
- Department of Child Neurology, Danish Epilepsy Center, Dianalund, Denmark
| | - Stefan Juhl
- Department of Neurology, Danish Epilepsy Center, Dianalund, Denmark
| | - Katarzyna Cebula
- Department of Neurology, Danish Epilepsy Center, Dianalund, Denmark
| | - Elisa Rahikkala
- Dept of Clinical Genetics, Research Unit of Clinical Medicine, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Isabelle Maystadt
- Center for Human Genetics, Institute for Pathology and Genetics, Gosselies, Belgium; URPhyM, Faculty of Medicine, University of Namur, Namur, Belgium
| | - Angela Peron
- Medical Genetics, ASST Santi Paolo e Carlo, San Paolo Hospital, Milan, Italy; Division of Medical Genetics, Meyer Children's Hospital IRCCS, Florence, Italy; Department of Experimental and Clinical Biomedical Sciences "Mario Serio," Università degli Studi di Firenze, Florence, Italy
| | - Aglaia Vignoli
- Child Neuropsychiatry Unit, Grande Ospedale Metropolitano Niguarda, University of Milan, Milan, Italy
| | - Rosa Maria Alfano
- Medical Genetics, ASST Santi Paolo e Carlo, San Paolo Hospital, Milan, Italy
| | - Franco Stanzial
- Genetic Counseling Service, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano, Italy
| | - Francesco Benedicenti
- Genetic Counseling Service, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano, Italy
| | - Aurora Currò
- Genetic Counseling Service, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano, Italy
| | - Ho-Ming Luk
- Clinical Genetics Service Unit, Hong Kong Children's Hospital, HKSAR, Hong Kong
| | - Guillaume Jouret
- National Center of Genetics, Laboratoire National de Santé, Dudelange, Luxembourg
| | - Ella Zurita
- Hunter Genetics, New South Wales Health, Waratah, NSW, Australia
| | - Lara Heuft
- Institute for Human Genetics, University of Leipzig Medical Center, Leipzig, Germany
| | - Franziska Schnabel
- Institute for Human Genetics, University of Leipzig Medical Center, Leipzig, Germany
| | - Andreas Busche
- Department of Medical Genetics, University Hospital Münster, Germany
| | | | - Tinatin Tkemaladze
- Department of Molecular and Medical Genetics, Tbilisi State Medical University, Tbilisi, Georgia; Givi Zhvania Pediatric Academic Clinic, Tbilisi State Medical University, Tbilisi, Georgia
| | - Pascal Vrielynck
- Reference Center for Refractory Epilepsy, Catholic University of Louvain, William Lennox Neurological Hospital, Ottignies, Belgium
| | - Damien Lederer
- Institute for Pathology and Genetics, 6040, Gosselies, Belgium
| | - Konrad Platzer
- Institute for Human Genetics, University of Leipzig Medical Center, Leipzig, Germany
| | | | - Himanshu Goel
- Hunter Genetics, New South Wales Health, Waratah, NSW, Australia
| | - Karen Jaqueline Low
- Department of Clinical Genetics, University Hospital Bristol and Weston NHS Foundation Trust, Bristol, United Kingdom; Centre for Academic Child Health, Bristol Medical School, University of Bristol, United Kingdom
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Ascaso Á, Arnedo M, Puisac B, Latorre-Pellicer A, Del Rincón J, Bueno-Lozano G, Pié J, Ramos FJ. Cornelia de Lange Spectrum. An Pediatr (Barc) 2024; 100:352-362. [PMID: 38735830 DOI: 10.1016/j.anpede.2024.04.012] [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: 12/27/2023] [Accepted: 03/11/2024] [Indexed: 05/14/2024] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a rare congenital developmental disorder with multisystemic involvement. The clinical presentation is highly variable, but the classic phenotype, characterized by distinctive craniofacial features, pre- and postnatal growth retardation, extremity reduction defects, hirsutism and intellectual disability can be distinguished from the nonclassic phenotype, which is generally milder and more difficult to diagnose. In addition, the clinical features overlap with those of other neurodevelopmental disorders, so the use of consensus clinical criteria and artificial intelligence tools may be helpful in confirming the diagnosis. Pathogenic variants in NIPBL, which encodes a protein related to the cohesin complex, have been identified in more than 60% of patients, and pathogenic variants in other genes related to this complex in another 15%: SMC1A, SMC3, RAD21, and HDAC8. Technical advances in large-scale sequencing have allowed the description of additional genes (BRD4, ANKRD11, MAU2), but the lack of molecular diagnosis in 15% of individuals and the substantial clinical heterogeneity of the syndrome suggest that other genes and mechanisms may be involved. Although there is no curative treatment, there are symptomatic/palliative treatments that paediatricians should be aware of. The main medical complication in classic SCdL is gastro-esophageal reflux (GER), which should be treated early.
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Affiliation(s)
- Ángela Ascaso
- Consulta de Pediatría, Centro de Salud Delicias Sur, Zaragoza, Spain
| | - María Arnedo
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Beatriz Puisac
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Ana Latorre-Pellicer
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Julia Del Rincón
- Unidad de Genética Clínica, Servicio de Pediatría, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Gloria Bueno-Lozano
- Unidad de Genética Clínica, Servicio de Pediatría, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - Juan Pié
- Laboratorio de Genética Clínica y Genómica Funcional, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
| | - Feliciano J Ramos
- Unidad de Genética Clínica, Servicio de Pediatría, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain.
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Gruca-Stryjak K, Doda-Nowak E, Dzierla J, Wróbel K, Szymankiewicz-Bręborowicz M, Mazela J. Advancing the Clinical and Molecular Understanding of Cornelia de Lange Syndrome: A Multidisciplinary Pediatric Case Series and Review of the Literature. J Clin Med 2024; 13:2423. [PMID: 38673696 PMCID: PMC11050916 DOI: 10.3390/jcm13082423] [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: 02/10/2024] [Revised: 04/08/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a complex genetic disorder with distinct facial features, growth limitations, and limb anomalies. Its broad clinical spectrum presents significant challenges in pediatric diagnosis and management. Due to cohesin complex mutations, the disorder's variable presentation requires extensive research to refine care and improve outcomes. This article provides a case series review of pediatric CdLS patients alongside a comprehensive literature review, exploring clinical variability and the relationship between genotypic changes and phenotypic outcomes. It also discusses the evolution of diagnostic and therapeutic techniques, emphasizing innovations in genetic testing, including detecting mosaicism and novel genetic variations. The aim is to synthesize case studies with current research to advance our understanding of CdLS and the effectiveness of management strategies in pediatric healthcare. This work highlights the need for an integrated, evidence-based approach to diagnosis and treatment. It aims to fill existing research gaps and advocate for holistic care protocols and tailored treatment plans for CdLS patients, ultimately improving their quality of life.
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Affiliation(s)
- Karolina Gruca-Stryjak
- Department of Perinatology, Faculty of Medicine, University of Medical Sciences, 60-535 Poznan, Poland
- Department of Obstetrics and Gynecology, Polish Mother’s Memorial Hospital Research Institute, 93-338 Lodz, Poland
- Centers for Medical Genetics Diagnostyka GENESIS, 60-406 Poznan, Poland
| | - Emilia Doda-Nowak
- Faculty of Medicine, University of Medical Sciences, 61-701 Poznan, Poland (J.D.)
| | - Julia Dzierla
- Faculty of Medicine, University of Medical Sciences, 61-701 Poznan, Poland (J.D.)
| | - Karolina Wróbel
- Department of Neonatology, Faculty of Medicine, University of Medical Sciences, 60-535 Poznan, Poland
| | | | - Jan Mazela
- Department of Neonatology, Faculty of Medicine, University of Medical Sciences, 60-535 Poznan, Poland
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Wei S, Li Y, Yang W, Chen S, Liu F, Zhang M, Ban B, He D. Functional investigation of a novel ANKRD11 frameshift variant identified in a Chinese family with KBG syndrome. Heliyon 2024; 10:e28082. [PMID: 38515699 PMCID: PMC10956060 DOI: 10.1016/j.heliyon.2024.e28082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/23/2024] Open
Abstract
KBG syndrome is a rare autosomal dominant condition characterized by multisystem developmental disorder, primarily caused by loss-of-function variants in ankyrin repeat domain-containing protein 11 (ANKRD11). Approximately 80 % of ANKRD11 variants associated with KBG syndrome, are frameshift and nonsense variants. Current insight into the pathogenesis of KBG syndrome resulting from ANKRD11 truncating variants remains limited. Here, we presented two members from a non-consanguineous Chinese pedigree both exhibiting characteristics fitting the KBG syndrome-associated phenotypic spectrum. Whole-exome sequencing identified a novel heterozygous frameshift variant in ANKRD11 (NM_013275.6, c.2280_2281delGT, p.Y761Qfs*20) in the proband. Sanger sequencing confirmed that the variant was inherited from her mother and co-segregated with KBG syndrome phenotype. In vitro functional assays revealed that the frameshift variant escaped nonsense-mediated mRNA decay, and resulting in a truncated protein with significantly increased expression levels compared to full-length ANKRD11. Immunofluorescence results demonstrated that truncated protein was predominantly expressed in the nucleus of HEK293 cells, while wild-type ANKRD11 was equally distributed in both the nucleus and cytoplasm. Moreover, the truncated protein significantly reduced CDKN1A/P21-promoter luciferase activity in comparison to wild-type ANKRD11 protein, as well as a remarkably decrease in the endogenous CDKN1A/P21 mRNA level in HEK293 cells. These findings suggest a loss of transcriptional activation function and potentially a dominant-negative mechanism. Overall, our study expands the mutational spectrum of ANKRD11 gene and provides new insights into the pathogenic mechanism of KBG syndrome caused by ANKRD11 truncating variants.
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Affiliation(s)
- Shuoshuo Wei
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Medical Research Center, Affiliated Hospital of Jining Medical University, Jining, PR China
| | - Yanying Li
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Chinese Research Center for Behavior Medicine in Growth and Development, Jining, PR China
| | - Wanling Yang
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, PR China
| | - Shuxiong Chen
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Medical Research Center, Affiliated Hospital of Jining Medical University, Jining, PR China
| | - Fupeng Liu
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Medical Research Center, Affiliated Hospital of Jining Medical University, Jining, PR China
| | - Mei Zhang
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Chinese Research Center for Behavior Medicine in Growth and Development, Jining, PR China
| | - Bo Ban
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Medical Research Center, Affiliated Hospital of Jining Medical University, Jining, PR China
- Chinese Research Center for Behavior Medicine in Growth and Development, Jining, PR China
| | - Dongye He
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining, PR China
- Medical Research Center, Affiliated Hospital of Jining Medical University, Jining, PR China
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Chen S, Zhang W, Xia Z, Xie J, Li Z, Liu Z, Yu N, Wang X. MicroRNAs Associated with Keloids Identified by Microarray Analysis and In Vitro Experiments. Mol Biotechnol 2024:10.1007/s12033-024-01058-0. [PMID: 38393632 DOI: 10.1007/s12033-024-01058-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 01/02/2024] [Indexed: 02/25/2024]
Abstract
MicroRNAs (miRNAs) play a crucial role in gene regulation and the development of keloid. This research aimed to identify and verify miRNAs associated with keloids by microarray analysis and in vitro experiments, shedding light on seeking for potential therapeutic molecular targets. In this study, the weighted gene co-expression network analysis was performed based on the GSE113620. The key miRNA module most relevant to the keloid was further screened to identify hub miRNAs, and then hub miRNAs was verified by the microarray analysis and qRT-PCR experiments. Additionally, targeted genes of hub miRNAs were predicted and verified. Gene ontology (GO) analysis and KEGG enrichment analysis were also conducted. Five miRNA modules were divided, and the blue module exhibited the highest correlation with keloids. Then, hsa-miR-127-3p, hsa-miR-214-3p, hsa-miR-155-5p, hsa-miR-409-5p, and hsa-miR-542-5p were identified as the hub miRNAs. Subsequently, the microarray analysis and qRT-PCR results demonstrated that the expression of five miRNAs were upregulated in keloid tissues. The GO analysis revealed that the target genes of these miRNAs were mainly enriched in biological processes including gene transcription, protein phosphorylation and the MAPK (mitogen-activated protein kinase) cascade, and the KEGG pathway enrichment analysis showed that the PI3K-AKT signaling pathway were significantly enriched. In conclusion, these five miRNAs (hsa-miR-127-3p, hsa-miR-155-5p, hsa-miR-214-3p, hsa-miR-409-5p, and hsa-miR-542-5p) play vital roles in the pathogenesis of keloid and might be potential therapeutic targets. These miRNAs might regulate genes enriched in gene transcription, protein phosphorylation, the MAPK cascade, and the PI3K-Akt signaling pathway.
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Affiliation(s)
- Sichao Chen
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenchao Zhang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zenan Xia
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiangmiao Xie
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhijin Li
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zeming Liu
- Department of Plastic and Cosmetic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Nanze Yu
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
- Department of International Medical Service, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Xiaojun Wang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Whitney R, Komar M, Yoganathan S, Costain G, Jain P. Epilepsy in KBG Syndrome: Report of Additional Cases. Pediatr Neurol 2024; 151:138-142. [PMID: 38157719 DOI: 10.1016/j.pediatrneurol.2023.12.006] [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: 10/26/2023] [Revised: 11/24/2023] [Accepted: 12/08/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND KBG syndrome is a genetic disorder characterized by short stature, dysmorphic features, macrodontia, cognitive impairment, and limb anomalies. Epilepsy is an important comorbidity associated with KBG syndrome, although the entire phenotypic spectrum may not be fully appreciated. METHODS We identified five new patients with KBG syndrome-related epilepsy and compared their phenotype to previously reported cases in the literature. RESULTS Five patients with KBG syndrome-related epilepsy were identified. Three patients (60%) were male. Median age of seizure onset was 18 months (interquartile range 5, 32). The epilepsy type was generalized in three patients (60%); in two, the epilepsy type was combined (40%), with focal and generalized seizures. In one patient (20%), the epilepsy syndrome was classifiable and the child was diagnosed with myoclonic-atonic epilepsy. All five patients had pathogenic variants in the ANKRD11 gene. Epilepsy was refractory in two patients (40%). No specific antiseizure medication (ASM) was found to be superior. Literature review yielded 134 cases, median age of seizure onset was 4 years, and seizures were generalized (n = 60, 44%), focal (n = 26, 19%), or combined (n = 13, 10%). An epilepsy syndrome was diagnosed in 12 patients (8.8%). In those with documented response to ASM (n = 49), 22.4% were refractory (n = 11). CONCLUSIONS Our study confirms that few patients with epilepsy and KBG syndrome have an identifiable epilepsy syndrome and generalized seizures are most common. We highlight that epilepsy associated with KBG syndrome may occur before age one year and should be an important diagnostic consideration in this age group.
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Affiliation(s)
- Robyn Whitney
- Division of Neurology, Department of Paediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Madeline Komar
- Division of Neurology, Department of Paediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Sangeetha Yoganathan
- Division of Pediatric Neurology, Department of Neurological Sciences, Christian Medical College (CMC), Vellore, Tamil Nadu, India
| | - Gregory Costain
- Division of Clinical and Metabolic Genetics, Hospital for Sick Children, and Program in Genetics & Genome Biology, SickKids Research Institute, Toronto, Ontario, Canada
| | - Puneet Jain
- Epilepsy Program, Division of Neurology, Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.
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Amllal N, Elalaoui SC, Zerkaoui M, Chiguer A, Afif L, Izgua AT, Sefiani A, Lyahyai J. Identification of Two Novel ANKRD11 Mutations: Highlighting Incomplete Penetrance in KBG Syndrome. Ann Lab Med 2024; 44:110-117. [PMID: 37665295 PMCID: PMC10485853 DOI: 10.3343/alm.2024.44.1.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/08/2023] [Accepted: 07/27/2023] [Indexed: 09/05/2023] Open
Affiliation(s)
- Nada Amllal
- Research Team in Genomics and Molecular Epidemiology of Genetic Diseases, Genomics Center of Human Pathologies, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
- Department of Medical Genetics, National Institute of Health, Rabat, Morocco
| | - Siham Chafai Elalaoui
- Research Team in Genomics and Molecular Epidemiology of Genetic Diseases, Genomics Center of Human Pathologies, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
- Medical Genetics Unit, CHU Ibn Sina, Rabat, Morocco
| | | | - Amal Chiguer
- Research Team in Genomics and Molecular Epidemiology of Genetic Diseases, Genomics Center of Human Pathologies, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
- Department of Medical Genetics, National Institute of Health, Rabat, Morocco
| | - Lamia Afif
- Research Team in Genomics and Molecular Epidemiology of Genetic Diseases, Genomics Center of Human Pathologies, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
- Department of Medical Genetics, National Institute of Health, Rabat, Morocco
| | - Amal Thimou Izgua
- Center of Consultations and External Explorations, HER, CHU Ibn Sina, Rabat, Morocco
| | - Abdelaziz Sefiani
- Research Team in Genomics and Molecular Epidemiology of Genetic Diseases, Genomics Center of Human Pathologies, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
- Department of Medical Genetics, National Institute of Health, Rabat, Morocco
| | - Jaber Lyahyai
- Research Team in Genomics and Molecular Epidemiology of Genetic Diseases, Genomics Center of Human Pathologies, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
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Monzon AM, Arrías PN, Elofsson A, Mier P, Andrade-Navarro MA, Bevilacqua M, Clementel D, Bateman A, Hirsh L, Fornasari MS, Parisi G, Piovesan D, Kajava AV, Tosatto SCE. A STRP-ed definition of Structured Tandem Repeats in Proteins. J Struct Biol 2023; 215:108023. [PMID: 37652396 DOI: 10.1016/j.jsb.2023.108023] [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: 04/29/2023] [Revised: 07/31/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
Tandem Repeat Proteins (TRPs) are a class of proteins with repetitive amino acid sequences that have been studied extensively for over two decades. Different features at the level of sequence, structure, function and evolution have been attributed to them by various authors. And yet many of its salient features appear only when looking at specific subclasses of protein tandem repeats. Here, we attempt to rationalize the existing knowledge on Tandem Repeat Proteins (TRPs) by pointing out several dichotomies. The emerging picture is more nuanced than generally assumed and allows us to draw some boundaries of what is not a "proper" TRP. We conclude with an operational definition of a specific subset, which we have denominated STRPs (Structural Tandem Repeat Proteins), which separates a subclass of tandem repeats with distinctive features from several other less well-defined types of repeats. We believe that this definition will help researchers in the field to better characterize the biological meaning of this large yet largely understudied group of proteins.
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Affiliation(s)
- Alexander Miguel Monzon
- Dept. of Information Engineering, University of Padova, via Giovanni Gradenigo 6/B, 35131 Padova, Italy
| | - Paula Nazarena Arrías
- Dept. of Biomedical Sciences, University of Padova, via U. Bassi 58/b, 35121 Padova, Italy
| | - Arne Elofsson
- Dept. of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Tomtebodavägen 23, 171 21 Solna, Sweden
| | - Pablo Mier
- Institute of Organismic and Molecular Evolution, Faculty of Biology, Johannes Gutenberg University of Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany
| | - Miguel A Andrade-Navarro
- Institute of Organismic and Molecular Evolution, Faculty of Biology, Johannes Gutenberg University of Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany
| | - Martina Bevilacqua
- Dept. of Biomedical Sciences, University of Padova, via U. Bassi 58/b, 35121 Padova, Italy
| | - Damiano Clementel
- Dept. of Biomedical Sciences, University of Padova, via U. Bassi 58/b, 35121 Padova, Italy
| | - Alex Bateman
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Layla Hirsh
- Dept. of Engineering, Faculty of Science and Engineering, Pontifical Catholic University of Peru, Av. Universitaria 1801 San Miguel, Lima 32, Lima, Peru
| | - Maria Silvina Fornasari
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, CONICET, Bernal, Buenos Aires, Argentina
| | - Gustavo Parisi
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, CONICET, Bernal, Buenos Aires, Argentina
| | - Damiano Piovesan
- Dept. of Biomedical Sciences, University of Padova, via U. Bassi 58/b, 35121 Padova, Italy
| | - Andrey V Kajava
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier, 1919 Route de Mende, Cedex 5, 34293 Montpellier, France
| | - Silvio C E Tosatto
- Dept. of Biomedical Sciences, University of Padova, via U. Bassi 58/b, 35121 Padova, Italy.
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Magistrelli L, Contaldi E, Caushi F, Spano A, Cantello R, D'Alfonso S, Corrado L. A case of early-onset Parkinson's disease in a patient with KBG syndrome. Neurol Sci 2023; 44:4537-4539. [PMID: 37540342 DOI: 10.1007/s10072-023-06988-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/23/2023] [Indexed: 08/05/2023]
Affiliation(s)
- Luca Magistrelli
- Department of Translational Medicine, Section of Neurology, University of Piemonte Orientale and "Maggiore della Carità" University Hospital, Novara, Italy.
| | - Elena Contaldi
- PhD Program in Medical Sciences and Biotechnology, University of Piemonte Orientale, 28100, Novara, Italy
| | - Fjorilda Caushi
- Department of Health Sciences, Centre on Autoimmune and Allergic Diseases (CAAD), UPO, University of Eastern Piedmont, 28100, Novara, Italy
| | - Alice Spano
- Laboratory of Genetics, Clinical Biochemistry, University Hospital Maggiore della Carità, Novara, Italy
| | - Roberto Cantello
- Department of Translational Medicine, Section of Neurology, University of Piemonte Orientale and "Maggiore della Carità" University Hospital, Novara, Italy
| | - Sandra D'Alfonso
- Department of Health Sciences, Centre on Autoimmune and Allergic Diseases (CAAD), UPO, University of Eastern Piedmont, 28100, Novara, Italy
| | - Lucia Corrado
- Department of Health Sciences, Centre on Autoimmune and Allergic Diseases (CAAD), UPO, University of Eastern Piedmont, 28100, Novara, Italy
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10
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Zhang H, Guo X, Yang C, Zhang K, Wang D, Wang J, Liu Y, Kang L, Liu Q, Li X. Clinical feature and genetic mutation of KBG syndrome diagnosed in neonatal period: A case report. Medicine (Baltimore) 2023; 102:e35449. [PMID: 37800809 PMCID: PMC10553122 DOI: 10.1097/md.0000000000035449] [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: 07/02/2023] [Accepted: 09/11/2023] [Indexed: 10/07/2023] Open
Abstract
RATIONALE KBG syndrome (KBGS, OMIM: 148050), a rare genetic disorder, is clinically characterized by megalodontia, short stature, skeletal abnormalities, and nervous system manifestations. In the study, we explore the clinical and genetic characteristics of one neonate suffering KBGS caused by ANKRD11 gene mutation. PATIENT CONCERNS The proband, a female, was born prematurely at 31 + 2 weeks. There were repeated infections and abdominal distension in the first month after birth, and the platelets could not rise to normal. Head ultrasound showed intracranial brain injury and intracranial hemorrhage. DIAGNOSES Sequencing revealed that there was a heterozygous mutation in exon 9 of the ANKRD11 gene (NM_013275.5) for the child, c.1896_1897delTA (p.H632Qfs*30), which was a de novo mutation and has not been reported. Combining clinical features and genetic results, the proband was diagnosed as KBGS. INTERVENTIONS AND OUTCOMES The brain sonography on day 4 after birth showed brain injury and intracranial hemorrhage. Therefore, 140 mg of bovine lung surfactant was administered through endotracheal intubation in addition to ventilator-assisted ventilation. Antibiotic treatment was also given till the inflammatory indicators of the infant returned to normal levels. The following-up of 1-year-6-month showed that the language, motion and height of development is slight falling behind the children of the same age. LESSONS This is the first case of KBGS was diagnosed in the neonatal period, which provides a reference for the child to receive timely and correct treatment.
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Affiliation(s)
- HaoZheng Zhang
- Pediatric Research Institute, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Xuening Guo
- Neonatal Intensive Care Unit, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Chun Yang
- Department of Clinical Laboratory, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Kaihui Zhang
- Pediatric Research Institute, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Dong Wang
- Pediatric Research Institute, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Juan Wang
- Department of Clinical Laboratory, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Yi Liu
- Neonatal Intensive Care Unit, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Lili Kang
- Neonatal Intensive Care Unit, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Qinghua Liu
- Department of Ultrasound, Children’s Hospital Affiliated to Shandong University, Jinan, China
| | - Xiaoying Li
- Pediatric Research Institute, Children’s Hospital Affiliated to Shandong University, Jinan, China
- Neonatal Intensive Care Unit, Children’s Hospital Affiliated to Shandong University, Jinan, China
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11
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Borja N, Zafeer MF, Rodriguez JA, Morel Swols D, Thorson W, Bademci G, Tekin M. Deletion of first noncoding exon in ANKRD11 leads to KBG syndrome. Am J Med Genet A 2023; 191:1044-1049. [PMID: 36628575 DOI: 10.1002/ajmg.a.63119] [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: 08/26/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/12/2023]
Abstract
Phenotypic features of KBG syndrome include craniofacial anomalies, short stature, cognitive disability and behavioral findings. The syndrome is caused by heterozygous pathogenic single nucleotide variants and indels in ANKRD11, or a heterozygous deletion of 16q24.3 that includes ANKRD11. We performed genome sequencing on a patient with clinical manifestations of KBG syndrome including distinct craniofacial features as well as a history of mild intellectual disability and attention-deficit hyperactivity disorder. This led to the identification of a 43 kb intragenic deletion of ANKRD11 affecting the first noncoding exon while leaving the coding regions intact. Review of the literature shows that this is the smallest 5' deletion affecting only the noncoding exons of ANKRD11. Real-time polymerase chain reaction demonstrated that the copy number variant was not present in either of the proband's parents, suggesting it occurred de novo. RNA expression analysis demonstrated significantly decreased transcript abundance compared to controls. This provides new evidence for haploinsufficiency as a mechanism of disease in KBG syndrome.
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Affiliation(s)
- Nicholas Borja
- Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Mohammad Faraz Zafeer
- Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Jeimy Alfonso Rodriguez
- John P. Hussmann Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Dayna Morel Swols
- Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Willa Thorson
- Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Guney Bademci
- Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Mustafa Tekin
- Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA.,John P. Hussmann Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, USA
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12
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Martinez-Cayuelas E, Blanco-Kelly F, Lopez-Grondona F, Swafiri ST, Lopez-Rodriguez R, Losada-Del Pozo R, Mahillo-Fernandez I, Moreno B, Rodrigo-Moreno M, Casas-Alba D, Lopez-Gonzalez A, García-Miñaúr S, Ángeles Mori M, Pacio-Minguez M, Rikeros-Orozco E, Santos-Simarro F, Cruz-Rojo J, Quesada-Espinosa JF, Sanchez-Calvin MT, Sanchez-del Pozo J, Bernado Fonz R, Isidoro-Garcia M, Ruiz-Ayucar I, Alvarez-Mora MI, Blanco-Lago R, De Azua B, Eiris J, Garcia-Peñas JJ, Gil-Fournier B, Gomez-Lado C, Irazabal N, Lopez-Gonzalez V, Madrigal I, Malaga I, Martinez-Menendez B, Ramiro-Leon S, Garcia-Hoyos M, Prieto-Matos P, Lopez-Pison J, Aguilera-Albesa S, Alvarez S, Fernández-Jaén A, Llano-Rivas I, Gener-Querol B, Ayuso C, Arteche-Lopez A, Palomares-Bralo M, Cueto-González A, Valenzuela I, Martinez-Monseny A, Lorda-Sanchez I, Almoguera B. Clinical description, molecular delineation and genotype–phenotype correlation in 340 patients with KBG syndrome: addition of 67 new patients. J Med Genet 2022:jmg-2022-108632. [DOI: 10.1136/jmg-2022-108632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 11/06/2022] [Indexed: 11/30/2022]
Abstract
BackgroundKBG syndrome is a highly variable neurodevelopmental disorder and clinical diagnostic criteria have changed as new patients have been reported. Both loss-of-function sequence variants and large deletions (copy number variations, CNVs) involvingANKRD11cause KBG syndrome, but no genotype–phenotype correlation has been reported.Methods67 patients with KBG syndrome were assessed using a custom phenotypical questionnaire. Manifestations present in >50% of the patients and a ‘phenotypical score’ were used to perform a genotype–phenotype correlation in 340 patients from our cohort and the literature.ResultsNeurodevelopmental delay, macrodontia, triangular face, characteristic ears, nose and eyebrows were the most prevalentf (eatures. 82.8% of the patients had at least one of seven main comorbidities: hearing loss and/or otitis media, visual problems, cryptorchidism, cardiopathy, feeding difficulties and/or seizures. Associations found included a higher phenotypical score in patients with sequence variants compared with CNVs and a higher frequency of triangular face (71.1% vs 42.5% in CNVs). Short stature was more frequent in patients with exon 9 variants (62.5% inside vs 27.8% outside exon 9), and the prevalence of intellectual disability/attention deficit hyperactivity disorder/autism spectrum disorder was lower in patients with the c.1903_1907del variant (70.4% vs 89.4% other variants). Presence of macrodontia and comorbidities were associated with larger deletion sizes and hand anomalies with smaller deletions.ConclusionWe present a detailed phenotypical description of KBG syndrome in the largest series reported to date of 67 patients, provide evidence of a genotype–phenotype correlation between some KBG features and specificANKRD11variants in 340 patients, and propose updated clinical diagnostic criteria based on our findings.
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13
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Guo L, Park J, Yi E, Marchi E, Hsieh TC, Kibalnyk Y, Moreno-Sáez Y, Biskup S, Puk O, Beger C, Li Q, Wang K, Voronova A, Krawitz PM, Lyon GJ. KBG syndrome: videoconferencing and use of artificial intelligence driven facial phenotyping in 25 new patients. Eur J Hum Genet 2022; 30:1244-1254. [PMID: 35970914 PMCID: PMC9626563 DOI: 10.1038/s41431-022-01171-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/26/2022] [Accepted: 07/26/2022] [Indexed: 02/04/2023] Open
Abstract
Genetic variants in Ankyrin Repeat Domain 11 (ANKRD11) and deletions in 16q24.3 are known to cause KBG syndrome, a rare syndrome associated with craniofacial, intellectual, and neurobehavioral anomalies. We report 25 unpublished individuals from 22 families with molecularly confirmed diagnoses. Twelve individuals have de novo variants, three have inherited variants, and one is inherited from a parent with low-level mosaicism. The mode of inheritance was unknown for nine individuals. Twenty are truncating variants, and the remaining five are missense (three of which are found in one family). We present a protocol emphasizing the use of videoconference and artificial intelligence (AI) in collecting and analyzing data for this rare syndrome. A single clinician interviewed 25 individuals throughout eight countries. Participants' medical records were reviewed, and data was uploaded to the Human Disease Gene website using Human Phenotype Ontology (HPO) terms. Photos of the participants were analyzed by the GestaltMatcher and DeepGestalt, Face2Gene platform (FDNA Inc, USA) algorithms. Within our cohort, common traits included short stature, macrodontia, anteverted nares, wide nasal bridge, wide nasal base, thick eyebrows, synophrys and hypertelorism. Behavioral issues and global developmental delays were widely present. Neurologic abnormalities including seizures and/or EEG abnormalities were common (44%), suggesting that early detection and seizure prophylaxis could be an important point of intervention. Almost a quarter (24%) were diagnosed with attention deficit hyperactivity disorder and 28% were diagnosed with autism spectrum disorder. Based on the data, we provide a set of recommendations regarding diagnostic and treatment approaches for KBG syndrome.
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Affiliation(s)
- Lily Guo
- grid.420001.70000 0000 9813 9625Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314 USA
| | - Jiyeon Park
- grid.420001.70000 0000 9813 9625Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314 USA
| | - Edward Yi
- grid.420001.70000 0000 9813 9625Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314 USA
| | - Elaine Marchi
- grid.420001.70000 0000 9813 9625Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314 USA
| | - Tzung-Chien Hsieh
- grid.10388.320000 0001 2240 3300Institute for Genomic Statistics and Bioinformatics, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Yana Kibalnyk
- grid.17089.370000 0001 2190 316XDepartment of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB Canada ,grid.17089.370000 0001 2190 316XDepartment of Cell Biology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB Canada
| | | | - Saskia Biskup
- CeGaT GmbH, Praxis für Humangenetik Tübingen, Tübingen, Germany
| | - Oliver Puk
- CeGaT GmbH, Praxis für Humangenetik Tübingen, Tübingen, Germany
| | - Carmela Beger
- grid.512442.40000 0004 0553 6293MVZ Labor Krone GbR, Filialpraxis für Humangenetik, Bielefeld, Germany
| | - Quan Li
- grid.17063.330000 0001 2157 2938Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON M5G2C1 Canada
| | - Kai Wang
- grid.239552.a0000 0001 0680 8770Raymond G. Perelman Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA 19104 USA
| | - Anastassia Voronova
- grid.17089.370000 0001 2190 316XDepartment of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB Canada ,grid.17089.370000 0001 2190 316XDepartment of Cell Biology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB Canada
| | - Peter M. Krawitz
- grid.10388.320000 0001 2240 3300Institute for Genomic Statistics and Bioinformatics, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Gholson J. Lyon
- grid.420001.70000 0000 9813 9625Department of Human Genetics, NYS Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314 USA ,grid.420001.70000 0000 9813 9625George A. Jervis Clinic, NYS Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314 USA ,grid.212340.60000000122985718Biology PhD Program, The Graduate Center, The City University of New York, New York, NY USA
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14
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Demaria F, Alfieri P, Digilio MC, Pontillo M, Di Vincenzo C, Montanaro FAM, Ciullo V, Zampino G, Vicari S. Obsessive Compulsive “Paper Handling”: A Potential Distinctive Behavior in Children and Adolescents with KBG Syndrome. J Clin Med 2022; 11:jcm11164687. [PMID: 36012925 PMCID: PMC9410117 DOI: 10.3390/jcm11164687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/21/2022] Open
Abstract
KBG syndrome (KBGS; OMIM #148050) is a rare disease characterized by short stature, facial dysmorphism, macrodontia of the upper central incisors, skeletal anomalies, and neurodevelopmental disorder/intellectual disability. It is caused by a heterozygous variant or 16q24.3 microdeletions of the ANKRD11 gene (OMIM #611192), which plays a primary role in neuronal development. KBGS traits are variable, and mild expressions of the phenotype may complicate diagnosis. The present work aims at improving the characterization of KBGS in order to facilitate its recognition. A psychopathological evaluation of 17 subjects affected by KBGS found that 10 patients exhibited peculiar behavior related to “paper handling”. These children and adolescents performed repetitive activities with paper, reminiscent of the hoarding and ordering behaviors characteristic of obsessive compulsive disorder. Their activities were time consuming and carried out in solitary, and forced interruption could generate intense emotional reactions. Paper handling may thus be understood as a potential distinct KBGS symptom akin to an obsessive compulsive symptom. Further research is needed to verify this claim.
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Affiliation(s)
- Francesco Demaria
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
- Correspondence:
| | - Paolo Alfieri
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | | | - Maria Pontillo
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Cristina Di Vincenzo
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Federica Alice Maria Montanaro
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Valentina Ciullo
- IRCCS Santa Lucia Foundation, Laboratory of Neuropsychiatry, 00179 Rome, Italy
| | - Giuseppe Zampino
- Istituto di Clinica Pediatrica, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
- Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
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15
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Loberti L, Bruno LP, Granata S, Doddato G, Resciniti S, Fava F, Carullo M, Rahikkala E, Jouret G, Menke LA, Lederer D, Vrielynck P, Ryba L, Brunetti-Pierri N, Lasa-Aranzasti A, Cueto-González AM, Trujillano L, Valenzuela I, Tizzano EF, Spinelli AM, Bruno I, Currò A, Stanzial F, Benedicenti F, Lopergolo D, Santorelli FM, Aristidou C, Tanteles GA, Maystadt I, Tkemaladze T, Reimand T, Lokke H, Õunap K, Haanpää MK, Holubová A, Zoubková V, Schwarz M, Žordania R, Muru K, Roht L, Tihveräinen A, Teek R, Thomson U, Atallah I, Superti-Furga A, Buoni S, Canitano R, Scandurra V, Rossetti A, Grosso S, Battini R, Baldassarri M, Mencarelli MA, Rizzo CL, Bruttini M, Mari F, Ariani F, Renieri A, Pinto AM. Natural history of KBG syndrome in a large European cohort. Hum Mol Genet 2022; 31:4131-4142. [PMID: 35861666 PMCID: PMC9759332 DOI: 10.1093/hmg/ddac167] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/22/2022] [Accepted: 07/07/2022] [Indexed: 01/21/2023] Open
Abstract
KBG syndrome (KBGS) is characterized by distinctive facial gestalt, short stature and variable clinical findings. With ageing, some features become more recognizable, allowing a differential diagnosis. We aimed to better characterize natural history of KBGS. In the context of a European collaborative study, we collected the largest cohort of KBGS patients (49). A combined array- based Comparative Genomic Hybridization and next generation sequencing (NGS) approach investigated both genomic Copy Number Variants and SNVs. Intellectual disability (ID) (82%) ranged from mild to moderate with severe ID identified in two patients. Epilepsy was present in 26.5%. Short stature was consistent over time, while occipitofrontal circumference (median value: -0.88 SD at birth) normalized over years. Cerebral anomalies, were identified in 56% of patients and thus represented the second most relevant clinical feature reinforcing clinical suspicion in the paediatric age when short stature and vertebral/dental anomalies are vague. Macrodontia, oligodontia and dental agenesis (53%) were almost as frequent as skeletal anomalies, such as brachydactyly, short fifth finger, fifth finger clinodactyly, pectus excavatum/carinatum, delayed bone age. In 28.5% of individuals, prenatal ultrasound anomalies were reported. Except for three splicing variants, leading to a premature termination, variants were almost all frameshift. Our results, broadening the spectrum of KBGS phenotype progression, provide useful tools to facilitate differential diagnosis and improve clinical management. We suggest to consider a wider range of dental anomalies before excluding diagnosis and to perform a careful odontoiatric/ear-nose-throat (ENT) evaluation in order to look for even submucosal palate cleft given the high percentage of palate abnormalities. NGS approaches, following evidence of antenatal ultrasound anomalies, should include ANKRD11.
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Affiliation(s)
| | | | - Stefania Granata
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy,Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
| | - Gabriella Doddato
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy
| | - Sara Resciniti
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy
| | - Francesca Fava
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy,Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
| | - Michele Carullo
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy
| | - Elisa Rahikkala
- Department of Clinical Genetics, PEDEGO Research Unit, and Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu 90014, Finland
| | - Guillaume Jouret
- National Center of Genetics (NCG), Laboratoire national de santé (LNS), L-3555 Dudelange, Luxembourg
| | - Leonie A Menke
- Amsterdam UMC location University of Amsterdam, Department of Pediatrics, Amsterdam 1100, The Netherlands
| | - Damien Lederer
- Institut de Pathologie et de Génétique; Centre de Génétique Humaine, Gosselies 6041, Belgium
| | - Pascal Vrielynck
- William Lennox Neurological Hospital, Reference Center for Refractory Epilepsy UCLouvain, Ottignies 1340, Belgium
| | - Lukáš Ryba
- Department of Biology and Medical Genetics, Charles University – 2 Faculty of Medicine and University Hospital Motol, Prague 150 00, Czech Republic
| | - Nicola Brunetti-Pierri
- Department of Translational Medicine, University of Naples "Federico II", Naples 80125, Italy
| | - Amaia Lasa-Aranzasti
- Area of Clinical and Molecular Genetics, Vall d’Hebron University Hospital, Barcellona 08035, Spain
| | | | - Laura Trujillano
- Area of Clinical and Molecular Genetics, Vall d’Hebron University Hospital, Barcellona 08035, Spain
| | - Irene Valenzuela
- Area of Clinical and Molecular Genetics, Vall d’Hebron University Hospital, Barcellona 08035, Spain
| | - Eduardo F Tizzano
- Area of Clinical and Molecular Genetics, Vall d’Hebron University Hospital, Barcellona 08035, Spain
| | | | - Irene Bruno
- Institute for Maternal and Child Health, Trieste 34100, Italy
| | - Aurora Currò
- Genetic Counseling Service, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano 39100, Italy
| | - Franco Stanzial
- Genetic Counseling Service, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano 39100, Italy
| | - Francesco Benedicenti
- Genetic Counseling Service, Department of Pediatrics, Regional Hospital of Bolzano, Bolzano 39100, Italy
| | - Diego Lopergolo
- IRCCS Stella Maris Foundation, Molecular Medicine for Neurodegenerative and Neuromuscular Disease Unit, Pisa 98125, Italy
| | - Filippo Maria Santorelli
- IRCCS Stella Maris Foundation, Molecular Medicine for Neurodegenerative and Neuromuscular Disease Unit, Pisa 98125, Italy
| | - Constantia Aristidou
- Department of Clinical Genetics and Genomics, The Cyprus Institute of Neurology & Genetics, Nicosia 1683, Cyprus
| | - George A Tanteles
- Department of Clinical Genetics and Genomics, The Cyprus Institute of Neurology & Genetics, Nicosia 1683, Cyprus
| | - Isabelle Maystadt
- Institut de Pathologie et de Génétique; Centre de Génétique Humaine, Gosselies 6041, Belgium
| | - Tinatin Tkemaladze
- Department of Molecular and Medical Genetics, Tbilisi State Medical University, Tbilisi 0162, Georgia
| | - Tiia Reimand
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia,Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Helen Lokke
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia,Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Katrin Õunap
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia,Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Maria K Haanpää
- Department of Genomics and Clinical Genetics, Turku University Hospital, Turku 20500, Finland
| | - Andrea Holubová
- Department of Biology and Medical Genetics, Charles University – 2 Faculty of Medicine and University Hospital Motol, Prague 150 00, Czech Republic
| | - Veronika Zoubková
- Department of Biology and Medical Genetics, Charles University – 2 Faculty of Medicine and University Hospital Motol, Prague 150 00, Czech Republic
| | - Martin Schwarz
- Department of Biology and Medical Genetics, Charles University – 2 Faculty of Medicine and University Hospital Motol, Prague 150 00, Czech Republic
| | - Riina Žordania
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia
| | - Kai Muru
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia,Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Laura Roht
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia,Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Annika Tihveräinen
- Department of Child Neurology, Turku University Hospital, Turku 20500, Finland
| | - Rita Teek
- Department of Clinical Genetics, Genetic and Personalized Medicine Clinic, Tartu University Hospital, Tartu 50406, Estonia
| | - Ulvi Thomson
- Centre for Neurological Diseases, West-Tallinn Central Hospital, Tallinn 10617, Estonia
| | - Isis Atallah
- Division of Genetic Medicine, Lausanne University Hospital (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Lausanne University Hospital (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland
| | - Sabrina Buoni
- Division of Child and Adolescent Neuropsychiatry, University of Siena, Siena 53100, Italy
| | - Roberto Canitano
- Division of Child and Adolescent Neuropsychiatry, University of Siena, Siena 53100, Italy
| | - Valeria Scandurra
- Division of Child and Adolescent Neuropsychiatry, University of Siena, Siena 53100, Italy
| | - Annalisa Rossetti
- Clinical Paediatrics, Department of Molecular Medicine and Development, University of Siena, Siena 53100, Italy
| | - Salvatore Grosso
- Clinical Paediatrics, Department of Molecular Medicine and Development, University of Siena, Siena 53100, Italy
| | - Roberta Battini
- IRCCS Stella Maris Foundation, Department of Developmental Neuroscience, Pisa 98125, Italy,Department of Clinical and Experimental Medicine, University of Pisa, Pisa 56122, Italy
| | - Margherita Baldassarri
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy
| | | | - Caterina Lo Rizzo
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
| | - Mirella Bruttini
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy,Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
| | - Francesca Mari
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy,Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
| | - Francesca Ariani
- Medical Genetics, University of Siena, Siena 53100, Italy,Med Biotech Hub and Competence Centre, Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy,Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
| | - Alessandra Renieri
- To whom correspondence should be addressed at: Medical Genetics Unit, University of Siena, Policlinico Santa Maria alle Scotte, Viale Bracci, 2, 53100 Siena, Italy. Tel: 39 0577 233303; Fax: 39 0577 233325;
| | - Anna Maria Pinto
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena 53100, Italy
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16
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Expanding the Molecular Spectrum of ANKRD11 Gene Defects in 33 Patients with a Clinical Presentation of KBG Syndrome. Int J Mol Sci 2022; 23:ijms23115912. [PMID: 35682590 PMCID: PMC9180463 DOI: 10.3390/ijms23115912] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/17/2022] [Accepted: 05/23/2022] [Indexed: 02/07/2023] Open
Abstract
KBG syndrome (KBGS) is a neurodevelopmental disorder caused by the Ankyrin Repeat Domain 11 (ANKRD11) haploinsufficiency. Here, we report the molecular investigations performed on a cohort of 33 individuals with KBGS clinical suspicion. By using a multi-testing genomic approach, including gene sequencing, Chromosome Microarray Analysis (CMA), and RT-qPCR gene expression assay, we searched for pathogenic alterations in ANKRD11. A molecular diagnosis was obtained in 22 out of 33 patients (67%). ANKRD11 sequencing disclosed pathogenic or likely pathogenic variants in 18 out of 33 patients. CMA identified one full and one terminal ANKRD11 pathogenic deletions, and one partial duplication and one intronic microdeletion, with both possibly being pathogenic. The pathogenic effect was established by RT-qPCR, which confirmed ANKRD11 haploinsufficiency only for the three deletions. Moreover, RT-qPCR applied to six molecularly unsolved KBGS patients identified gene downregulation in a clinically typical patient with previous negative tests, and further molecular investigations revealed a cryptic deletion involving the gene promoter. In conclusion, ANKRD11 pathogenic variants could also involve the regulatory regions of the gene. Moreover, the application of a multi-test approach along with the innovative use of RT-qPCR improved the diagnostic yield in KBGS suspected patients.
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17
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Gao F, Zhao X, Cao B, Fan X, Li X, Li L, Sui S, Su Z, Gong C. Genetic and Phenotypic Spectrum of KBG Syndrome: A Report of 13 New Chinese Cases and a Review of the Literature. J Pers Med 2022; 12:jpm12030407. [PMID: 35330407 PMCID: PMC8948816 DOI: 10.3390/jpm12030407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/16/2022] [Accepted: 02/24/2022] [Indexed: 02/06/2023] Open
Abstract
KBG syndrome (KBGS) is a rare autosomal dominant inherited disease that involves multiple systems and is associated with variations in the ankyrin repeat domain 11 (ANKRD11) gene. We report the clinical and genetic data for 13 Chinese KBGS patients diagnosed by genetic testing and retrospectively analyse the genotypes and phenotypes of previously reported KBGS patients. The 13 patients in this study had heterozygous variations in the ANKRD11 gene, including seven frameshift variations, three nonsense variations, and three missense variations. They carried 11 variation sites, of which eight were previously unreported. The clinical phenotype analysis of these 13 patients and 240 previously reported patients showed that the occurrence rates of craniofacial anomalies, dental anomalies, global developmental delays, intellectual disability/learning difficulties, limb anomalies, and behavioural anomalies were >70%. The occurrence rates of short stature, delayed bone age, and spinal vertebral body anomalies were >50%. The frequency of global developmental delays and intellectual disability/learning difficulties in patients with truncated ANKRD11 gene variation was higher than that in patients with missense variation in the ANKRD11 gene (p < 0.05). Collectively, this study reported the genotypic and phenotypic characteristics of the largest sample of KBGS patients from China and discovered eight new ANKRD11 gene variations, which enriched the variation spectrum of the ANKRD11 gene. Variation in the ANKRD11 gene mainly caused craniofacial anomalies, growth and developmental anomalies, skeletal system anomalies, and nervous system anomalies. Truncated variation in the ANKRD11 gene is more likely to lead to global growth retardation and intellectual disability/learning difficulties than missense variation in ANKRD11.
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Affiliation(s)
- Fenqi Gao
- Department of Endocrinology, Genetics, Metabolism and Adolescent Medicine, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China; (F.G.); (B.C.); (X.L.); (L.L.); (S.S.)
| | - Xiu Zhao
- Department of Endocrinology, Shenzhen Children’s Hospital, Shenzhen 518000, China;
| | - Bingyan Cao
- Department of Endocrinology, Genetics, Metabolism and Adolescent Medicine, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China; (F.G.); (B.C.); (X.L.); (L.L.); (S.S.)
| | - Xin Fan
- Pediatric Dapartment, The Second Affiliated Hospital of Guangxi Medical University, Nanning 510000, China;
| | - Xiaoqiao Li
- Department of Endocrinology, Genetics, Metabolism and Adolescent Medicine, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China; (F.G.); (B.C.); (X.L.); (L.L.); (S.S.)
| | - Lele Li
- Department of Endocrinology, Genetics, Metabolism and Adolescent Medicine, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China; (F.G.); (B.C.); (X.L.); (L.L.); (S.S.)
| | - Shengbin Sui
- Department of Endocrinology, Genetics, Metabolism and Adolescent Medicine, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China; (F.G.); (B.C.); (X.L.); (L.L.); (S.S.)
| | - Zhe Su
- Department of Endocrinology, Shenzhen Children’s Hospital, Shenzhen 518000, China;
- Correspondence: (Z.S.); (C.G.)
| | - Chunxiu Gong
- Department of Endocrinology, Genetics, Metabolism and Adolescent Medicine, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China; (F.G.); (B.C.); (X.L.); (L.L.); (S.S.)
- Correspondence: (Z.S.); (C.G.)
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18
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Shangguan H, Chen R. Phenotypes of Cornelia de Lange syndrome caused by non-cohesion genes: Novel variants and literature review. Front Pediatr 2022; 10:940294. [PMID: 35935361 PMCID: PMC9355708 DOI: 10.3389/fped.2022.940294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/27/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Cornelia de Lange syndrome (CdLS) is a genetic disorder caused by variants in cohesion genes including NIPBL, SMC1A, SMC3, RAD21, and HDAC8. According to the 2018 consensus statement, a patient with clinical scored ≥ 11 points could be diagnosed as CdLS. However, some variants in non-cohesion genes rather than cohesion genes can manifest as phenotypes of CdLS. OBJECTIVES This study describes six variants of non-cohesion genes (KDM6A, KMT2D, KMT2A ANKRD11, and UBE2A), and assesses the reliability of 11-points scale criteria in the clinical diagnosis of CdLS. METHODS Whole-exome sequencing (WES) was performed on six patients with features of CdLS. Phenotypic and genotypic spectra of 40 previously reported patients with features of CdLS caused by non-cohesion genes variants and 34 previously reported patients with NIPBL variants were summarized. Clinical score comparison among patients with NIPBL variants versus those with variants in non-cohesin genes was performed. RESULTS Variants in non-cohesion genes were found in six patients [KMT2A (n = 2), KMT2D, ANKRD11, KDM6A, and UBE2A]. Of them, four variants (KMT2A c.7789C > T, ANKRD11 c.1757_1776del, KDM6A c.655-1G > A, and UBE2A c.439C > T) were novel. Combining with previously reported cases, 46 patients with phenotypes of CdLS caused by variants in 20 non-cohesion genes are now reported. From this total cohort, the average clinical score of patients in ANKRD11 cohort, SETD5 cohort, and AFF4 cohort was statistically lower than those in NIPBL cohort (8.92 ± 1.77 vs. 12.23 ± 2.58, 7.33 ± 2.52 vs. 12.23 ± 2.58, 5.33 ± 1.53 vs. 12.23 ± 2.58; p < 0.05). The average clinical score of KMT2A cohort, EP300 cohort, and NIPBL cohort had not significantly different from (11 ± 2.19 vs. 12.23 ± 2.58, 10 ± 4.58 vs. 12.23 ± 2.58; p > 0.05). CONCLUSION We described 4 novel variants of non-cohesion genes in six Chinese patients with phenotypes of CdLS. Of note, three genes (KMT2D, KDM6A, and UBE2A) causing features of CdLS have never been reported. The proposed clinical criteria for CdLS needed to be updated and refined, insofar as WES was necessary to confirm the diagnosis of CdLS. Our study expanded the spectra of non-cohesion genetic variations in patients with features of CdLS.
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Affiliation(s)
- Huakun Shangguan
- Department of Endocrinology, Fuzhou Children's Hospital of Fujian Medical University, Fuzhou, China
| | - Ruimin Chen
- Department of Endocrinology, Fuzhou Children's Hospital of Fujian Medical University, Fuzhou, China
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19
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Parenti I, Kaiser FJ. Cornelia de Lange Syndrome as Paradigm of Chromatinopathies. Front Neurosci 2021; 15:774950. [PMID: 34803598 PMCID: PMC8603810 DOI: 10.3389/fnins.2021.774950] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/18/2021] [Indexed: 12/18/2022] Open
Abstract
Chromatinopathies can be defined as a class of neurodevelopmental disorders caused by mutations affecting proteins responsible for chromatin remodeling and transcriptional regulation. The resulting dysregulation of gene expression favors the onset of a series of clinical features such as developmental delay, intellectual disability, facial dysmorphism, and behavioral disturbances. Cornelia de Lange syndrome (CdLS) is a prime example of a chromatinopathy. It is caused by mutations affecting subunits or regulators of the cohesin complex, a multisubunit protein complex involved in various molecular mechanisms such as sister chromatid cohesion, transcriptional regulation and formation of topologically associated domains. However, disease-causing variants in non-cohesin genes with overlapping functions have also been described in association with CdLS. Notably, the majority of these genes had been previously found responsible for distinct neurodevelopmental disorders that also fall within the category of chromatinopathies and are frequently considered as differential diagnosis for CdLS. In this review, we provide a systematic overview of the current literature to summarize all mutations in non-cohesin genes identified in association with CdLS phenotypes and discuss about the interconnection of proteins belonging to the chromatinopathies network.
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Affiliation(s)
- Ilaria Parenti
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Frank J Kaiser
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany.,Essener Zentrum für Seltene Erkrankungen (EZSE), Universitätsklinikum Essen, Essen, Germany
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20
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Latorre-Pellicer A, Ascaso Á, Lucia-Campos C, Gil-Salvador M, Arnedo M, Antoñanzas R, Ayerza-Casas A, Marcos-Alcalde I, Gómez-Puertas P, Ramos FJ, Pié J, Puisac B. Things are not always what they seem: From Cornelia de Lange to KBG phenotype in a girl with genetic variants in NIPBL and ANKRD11. Mol Genet Genomic Med 2021; 9:e1826. [PMID: 34617417 PMCID: PMC8606202 DOI: 10.1002/mgg3.1826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 01/30/2023] Open
Affiliation(s)
- Ana Latorre-Pellicer
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Ángela Ascaso
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Cristina Lucia-Campos
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Marta Gil-Salvador
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - María Arnedo
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Rebeca Antoñanzas
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Ariadna Ayerza-Casas
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain.,Unit of Paediatric Cardiology, Service of Paediatrics, Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Iñigo Marcos-Alcalde
- Molecular Modeling Group, Centro de Biología Molecular Severo Ochoa, CBMSO (CSIC-UAM), Madrid, Spain.,Biosciences Research Institute, School of Experimental Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - Paulino Gómez-Puertas
- Biosciences Research Institute, School of Experimental Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - Feliciano J Ramos
- Unit of Clinical Genetics, Service of Paediatrics, Hospital Clínico Universitario Lozano Blesa, Department of Paediatrics, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Juan Pié
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
| | - Beatriz Puisac
- Unit of Clinical Genetics and Functional Genomics, Department of Pharmacology-Physiology, School of Medicine, Universidad de Zaragoza, Zaragoza, Spain
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21
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Selicorni A, Mariani M, Lettieri A, Massa V. Cornelia de Lange Syndrome: From a Disease to a Broader Spectrum. Genes (Basel) 2021; 12:1075. [PMID: 34356091 PMCID: PMC8307173 DOI: 10.3390/genes12071075] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 12/23/2022] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a genetic disease that exemplifies the evolution of knowledge in the field of rare genetic disorders. Originally described as a unique pattern of major and minor anomalies, over time this syndrome has been shown to be characterized by a significant variability of clinical expression. By increasing the number of patients described, knowledge of the natural history of the condition has been enriched with the demonstration of the relative frequency of various potential comorbidities. Since 2006, the discovery of CdLS's molecular basis has shown an equally vast genetic heterogeneity linked to the presence of variants in genes encoding for the cohesin complex pathway. The most recent clinical-genetic data led to the classification of the "original syndrome" into a "clinical spectrum" that foresees the presence of classic patients, of non-classic forms, and of conditions that show a modest phenotypic overlapping with the original disease. Finally, the knowledge of the molecular basis of the disease has allowed the development of basic research projects that could lay the foundations for the development of possible innovative pharmacological treatments.
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Affiliation(s)
- Angelo Selicorni
- Mariani Foundation Center for Fragile Child, Pediatric Unit ASST Lariana, 22100 Como, Italy;
| | - Milena Mariani
- Mariani Foundation Center for Fragile Child, Pediatric Unit ASST Lariana, 22100 Como, Italy;
| | - Antonella Lettieri
- Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy; (A.L.); (V.M.)
- CRC Aldo Ravelli for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy
| | - Valentina Massa
- Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy; (A.L.); (V.M.)
- CRC Aldo Ravelli for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy
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