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van Wijngaarden V, de Wilde H, Mink van der Molen D, Petter J, Stegeman I, Gerrits E, Smit AL, van den Boogaard MJ. Genetic outcomes in children with developmental language disorder: a systematic review. Front Pediatr 2024; 12:1315229. [PMID: 38298611 PMCID: PMC10828955 DOI: 10.3389/fped.2024.1315229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/02/2024] [Indexed: 02/02/2024] Open
Abstract
Introduction Developmental language disorder (DLD) is a common childhood condition negatively influencing communication and psychosocial development. An increasing number of pathogenic variants or chromosomal anomalies possibly related to DLD have been identified. To provide a base for accurate clinical genetic diagnostic work-up for DLD patients, understanding the specific genetic background is crucial. This study aims to give a systematic literature overview of pathogenic variants or chromosomal anomalies causative for DLD in children. Methods We conducted a systematic search in PubMed and Embase on available literature related to the genetic background of diagnosed DLD in children. Included papers were critically appraised before data extraction. An additional search in OMIM was performed to see if the described DLD genes are associated with a broader clinical spectrum. Results The search resulted in 15,842 papers. After assessing eligibility, 47 studies remained, of which 25 studies related to sex chromosome aneuploidies and 15 papers concerned other chromosomal anomalies (SCAs) and/or Copy Number Variants (CNVs), including del15q13.1-13.3 and del16p11.2. The remaining 7 studies displayed a variety of gene variants. 45 (candidate) genes related to language development, including FOXP2, GRIN2A, ERC1, and ATP2C2. After an additional search in the OMIM database, 22 of these genes were associated with a genetic disorder with a broader clinical spectrum, including intellectual disability, epilepsy, and/or autism. Conclusion Our study illustrates that DLD can be related to SCAs and specific CNV's. The reported (candidate) genes (n = 45) in the latter category reflect the genetic heterogeneity and support DLD without any comorbidities and syndromic language disorder have an overlapping genetic etiology.
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Affiliation(s)
| | - Hester de Wilde
- Department of Pediatric Otorhinolaryngology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Jildo Petter
- Faculty of Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Inge Stegeman
- Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht, Netherlands
- Brain Center, University Medical Center Utrecht, Utrecht, Netherlands
| | - Ellen Gerrits
- Research Group Speech and Language Therapy, HU University of Applied Sciences Utrecht, Utrecht, Netherlands
- Department of Languages, Literature and Communication, Faculty of Humanities, Utrecht University, Utrecht, Netherlands
| | - Adriana L. Smit
- Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht, Netherlands
- Research Group Speech and Language Therapy, HU University of Applied Sciences Utrecht, Utrecht, Netherlands
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Saby JN, Peters SU, Benke TA, Standridge SM, Swanson LC, Lieberman DN, Olson HE, Key AP, Percy AK, Neul JL, Nelson CA, Roberts TPL, Marsh ED. Comparison of evoked potentials across four related developmental encephalopathies. J Neurodev Disord 2023; 15:10. [PMID: 36870948 PMCID: PMC9985257 DOI: 10.1186/s11689-023-09479-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND Developing biomarkers is a priority for drug development for all conditions, but vital in the rare neurodevelopmental disorders where sensitive outcome measures are lacking. We have previously demonstrated the feasibility and tracking of evoked potentials to disease severity in Rett syndrome and CDKL5 deficiency disorder. The aim of the current study is to characterize evoked potentials in two related developmental encephalopathies, MECP2 duplication syndrome and FOXG1 syndrome, and compare across all four groups to better understand the potential of these measures to serve as biomarkers of clinical severity for the developmental encephalopathies. METHODS Visual and auditory evoked potentials were acquired from participants with MECP2 duplication syndrome and FOXG1 syndrome across five sites of the Rett Syndrome and Rett-Related Disorders Natural History Study. A group of age-matched individuals (mean = 7.8 years; range = 1-17) with Rett syndrome, CDKL5 deficiency disorder, and typically-developing participants served as a comparison group. The analysis focused on group-level differences as well as associations between the evoked potentials and measures of clinical severity from the Natural History Study. RESULTS As reported previously, group-level comparisons revealed attenuated visual evoked potentials (VEPs) in participants with Rett syndrome (n = 43) and CDKL5 deficiency disorder (n = 16) compared to typically-developing participants. VEP amplitude was also attenuated in participants with MECP2 duplication syndrome (n = 15) compared to the typically-developing group. VEP amplitude correlated with clinical severity for Rett syndrome and FOXG1 syndrome (n = 5). Auditory evoked potential (AEP) amplitude did not differ between groups, but AEP latency was prolonged in individuals with MECP2 duplication syndrome (n = 14) and FOXG1 syndrome (n = 6) compared to individuals with Rett syndrome (n = 51) and CDKL5 deficiency disorder (n = 14). AEP amplitude correlated with severity in Rett syndrome and CDKL5 deficiency disorder. AEP latency correlated with severity in CDKL5 deficiency disorder, MECP2 duplication syndrome, and FOXG1 syndrome. CONCLUSIONS There are consistent abnormalities in the evoked potentials in four developmental encephalopathies some of which correlate with clinical severity. While there are consistent changes amongst these four disorders, there are also condition specific findings that need to be further refined and validated. Overall, these results provide a foundation for further refinement of these measures for use in future clinical trials for these conditions.
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Affiliation(s)
- Joni N Saby
- Division of Radiology Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Sarika U Peters
- Department of Pediatrics, Vanderbilt University Medical Center, Vanderbilt Kennedy Center, Nashville, TN, USA
| | - Timothy A Benke
- Department of Pediatrics, Neurology,, Pharmacology and Otolaryngology, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, USA
| | - Shannon M Standridge
- Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, , USA
| | - Lindsay C Swanson
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - David N Lieberman
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - Heather E Olson
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | - Alexandra P Key
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Vanderbilt Kennedy Center, Nashville, TN, USA
| | - Alan K Percy
- Department of Pediatrics (Neurology), University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jeffrey L Neul
- Department of Pediatrics, Vanderbilt University Medical Center, Vanderbilt Kennedy Center, Nashville, TN, USA
| | - Charles A Nelson
- Laboratories of Cognitive Neuroscience, Boston Children's Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Graduate School of Education, Harvard University, Cambridge, MA, USA
| | - Timothy P L Roberts
- Division of Radiology Research, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Eric D Marsh
- Division of Child Neurology, Children's Hospital of Philadelphia, Abramson Research Building- Room 502E, 3615 Civic Center Boulevard, Philadelphia, PA, 19104, USA.
- Orphan Disease Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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Zhang M, Zhou Y, Jiang Y, Lu Z, Xiao X, Ning J, Sun H, Zhang X, Luo H, Can D, Lu J, Xu H, Zhang YW. Profiling of Sexually Dimorphic Genes in Neural Cells to Identify Eif2s3y, Whose Overexpression Causes Autism-Like Behaviors in Male Mice. Front Cell Dev Biol 2021; 9:669798. [PMID: 34307355 PMCID: PMC8292149 DOI: 10.3389/fcell.2021.669798] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/12/2021] [Indexed: 12/30/2022] Open
Abstract
Many neurological disorders exhibit sex differences and sex-specific therapeutic responses. Unfortunately, significant amounts of studies investigating molecular and cellular mechanisms underlying these neurological disorders use primary cell cultures with undetermined sexes; and this may be a source for contradictory results among different studies and impair the validity of study conclusion. Herein, we comprehensively compared sexual dimorphism of gene expression in primary neurons, astrocytes, and microglia derived from neonatal mouse brains. We found that overall sexually dimorphic gene numbers were relatively low in these primary cells, with microglia possessing the most (264 genes), neurons possessing the medium (69 genes), and astrocytes possessing the least (30 genes). KEGG analysis indicated that sexually dimorphic genes in these three cell types were strongly enriched for the immune system and immune-related diseases. Furthermore, we identified that sexually dimorphic genes shared by these primary cells dominantly located on the Y chromosome, including Ddx3y, Eif2s3y, Kdm5d, and Uty. Finally, we demonstrated that overexpression of Eif2s3y increased synaptic transmission specifically in male neurons and caused autism-like behaviors specifically in male mice. Together, our results demonstrate that the sex of primary cells should be considered when these cells are used for studying the molecular mechanism underlying neurological disorders with sex-biased susceptibility, especially those related to immune dysfunction. Moreover, our findings indicate that dysregulation of sexually dimorphic genes on the Y chromosome may also result in autism and possibly other neurological disorders, providing new insights into the genetic driver of sex differences in neurological disorders.
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Affiliation(s)
- Muxian Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Yunqiang Zhou
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Yiru Jiang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China.,Emergency Department, Xiang'an Hospital, Xiamen University, Xiamen, China
| | - Zhancheng Lu
- Institute of Chemistry, University of Vienna, Vienna, Austria
| | - Xiaoxia Xiao
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Jinhuan Ning
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Hao Sun
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Xian Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Hong Luo
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Dan Can
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Jinsheng Lu
- Emergency Department, Xiang'an Hospital, Xiamen University, Xiamen, China
| | - Huaxi Xu
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China.,Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Yun-Wu Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute for Neuroscience, School of Medicine, Xiamen University, Xiamen, China.,Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, Xiamen, China
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Lu X, Wang C, Sun Y, Tang J, Tong K, Zhu J. Noninvasive prenatal testing for assessing foetal sex chromosome aneuploidy: a retrospective study of 45,773 cases. Mol Cytogenet 2021; 14:1. [PMID: 33407708 PMCID: PMC7786464 DOI: 10.1186/s13039-020-00521-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 12/09/2020] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE To assess the positive predictive value (PPV) of noninvasive prenatal testing (NIPT) as a screening test for sex chromosome aneuploidy (SCA) with different maternal characteristics and prenatal decisions in positive cases. MATERIALS AND METHODS We retrospectively analysed 45,773 singleton pregnancies with different characteristics that were subjected to NIPT in the Maternity and Child Health Hospital of Anhui Province. The results were validated by karyotyping. Clinical data, diagnostic results, and data on pregnancy outcomes were collected. RESULTS In total, 314 cases were SCA positive by NIPT; among those, 143 underwent invasive prenatal diagnostic testing, and 58 were true-positive. Overall, the PPVs for 45,X, 47,XXX, 47,XXY and 47,XYY were 12.5%, 51.72%, 66.67% and 83.33%, respectively. Interestingly, when only pregnant women of advanced maternal age (AMA) were screened, the PPVs for 45,X, 47,XXX, 47,XXY and 47,XYY were 23.81%, 53.33%, 78.95%, and 66.67%, respectively. The frequency of SCA was significantly higher in the AMA group than in the non-AMA group. The frequencies of 47,XXX and 47,XXY were significantly correlated with maternal age. CONCLUSION NIPT performed better in predicting sex chromosome trisomies than monosomy X, and patients with 45,X positive foetuses were more eager to terminate pregnancy than those with 47,XXX and 47,XYY. AMA may be a risk factor of having a foetus with SCA. Our findings may assist in genetic counselling of AMA pregnant women. Our pre- and posttest counselling are essential for familiarizing pregnant women with the benefits and limitations of NIPT, which may ease their anxiety and enable them to make informed choices for further diagnosis and pregnancy decisions.
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Affiliation(s)
- Xinran Lu
- Affiliated Maternity and Child Health Hospital of Anhui Medical University, Hefei, China.,Maternity and Child Health Hospital of Anhui Province, Hefei, China
| | - Chaohong Wang
- Maternity and Child Health Hospital of Anhui Province, Hefei, China
| | - Yuxiu Sun
- Maternity and Child Health Hospital of Anhui Province, Hefei, China
| | - Junxiang Tang
- Maternity and Child Health Hospital of Anhui Province, Hefei, China
| | - Keting Tong
- Maternity and Child Health Hospital of Anhui Province, Hefei, China
| | - Jiansheng Zhu
- Affiliated Maternity and Child Health Hospital of Anhui Medical University, Hefei, China. .,Maternity and Child Health Hospital of Anhui Province, Hefei, China.
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Green HL, Edgar JC, Matsuzaki J, Roberts TPL. Magnetoencephalography Research in Pediatric Autism Spectrum Disorder. Neuroimaging Clin N Am 2020; 30:193-203. [PMID: 32336406 PMCID: PMC7216756 DOI: 10.1016/j.nic.2020.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Magnetoencephalography (MEG) research indicates differences in neural brain measures in children with autism spectrum disorder (ASD) compared to typically developing (TD) children. As reviewed here, resting-state MEG exams are of interest as well as MEG paradigms that assess neural function across domains (e.g., auditory, resting state). To date, MEG research has primarily focused on group-level differences. Research is needed to explore whether MEG measures can predict, at the individual level, ASD diagnosis, prognosis (future severity), and response to therapy.
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Affiliation(s)
- Heather L Green
- Department of Radiology, Lurie Family Foundations MEG Imaging Center, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA 19104, USA.
| | - J Christopher Edgar
- Department of Radiology, Lurie Family Foundations MEG Imaging Center, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA 19104, USA; Department of Radiology, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Junko Matsuzaki
- Department of Radiology, Lurie Family Foundations MEG Imaging Center, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Timothy P L Roberts
- Department of Radiology, Lurie Family Foundations MEG Imaging Center, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA 19104, USA; Department of Radiology, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Boulevard, Philadelphia, PA 19104, USA
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Abnormal Auditory Mismatch Fields in Children and Adolescents With 16p11.2 Deletion and 16p11.2 Duplication. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2020; 5:942-950. [PMID: 32033921 DOI: 10.1016/j.bpsc.2019.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/02/2019] [Accepted: 11/04/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND Individuals with either deletion or duplication of the BP4-BP5 segment of chromosome 16p11.2 have varied behavioral phenotypes that may include autistic features, mild to moderate intellectual disability, and/or language impairment. However, the neurophysiological correlates of auditory language discrimination processing in individuals with 16p11.2 deletion and 16p11.2 duplication have not been investigated. METHODS Magnetoencephalography was used to measure magnetic mismatch fields (MMFs) arising from the left and right superior temporal gyrus during an auditory oddball paradigm with vowel stimuli (/a/ and /u/) in children and adolescents with 16p11.2 deletion or 16p11.2 duplication and in typically developing peers. One hundred twenty-eight participants ranging from 7 to 17 years of age were included in the final analysis (typically developing: n = 61, 12.08 ± 2.50 years of age; 16p11.2 deletion: n = 45, 11.28 ± 2.51 years of age; and 16p11.2 duplication: n = 22, 10.73 ± 2.49 years of age). RESULTS Delayed MMF latencies were found in both 16p11.2 deletion and 16p11.2 duplication groups compared with typically developing subjects. In addition, these delayed MMF latencies were associated with language and cognitive ability, with prolonged latency predicting greater impairment. CONCLUSIONS Our findings suggest that auditory MMF response delays are associated with clinical severity of language and cognitive impairment in individuals with either 16p11.2 deletion or 16p11.2 duplication, indicating a correlate of their shared/overlapping behavioral phenotype (and not a correlate of gene dosage).
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Gregoric Kumperscak H, Krgovic D, Drobnic Radobuljac M, Senica N, Zagorac A, Kokalj Vokac N. CNVs and Chromosomal Aneuploidy in Patients With Early-Onset Schizophrenia and Bipolar Disorder: Genotype-Phenotype Associations. Front Psychiatry 2020; 11:606372. [PMID: 33510659 PMCID: PMC7837028 DOI: 10.3389/fpsyt.2020.606372] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/07/2020] [Indexed: 11/17/2022] Open
Abstract
Introduction: Early-onset schizophrenia (EOS) and bipolar disorder (EOB) start before the age of 18 years and have a more severe clinical course, a worse prognosis, and a greater genetic loading compared to the late-onset forms. Copy number variations (CNVs) are an important genetic factor in the etiology of psychiatric disorders. Therefore, this study aimed to analyze CNVs in patients with EOS and EOB and to establish genotype-phenotype relationships for contiguous gene syndromes or genes affected by identified CNVs. Methods: Molecular karyotyping was performed in 45 patients, 38 with EOS and seven with EOB hospitalized between 2010 and 2017. The exclusion criteria were medical or neurological disorders or IQ under 70. Detected CNVs were analyzed according to the standards and guidelines of the American College of Medical Genetics. Result: Molecular karyotyping showed CNVs in four patients with EOS (encompassing the PAK2, ADAMTS3, and ADAMTSL1 genes, and the 16p11.2 microduplication syndrome) and in two patients with EOB (encompassing the ARHGAP11B and PRODH genes). In one patient with EOB, a chromosomal aneuploidy 47, XYY was found. Discussion: Our study is the first study of CNVs in EOS and EOB patients in Slovenia. Our findings support the association of the PAK2, ARHGAP11B, and PRODH genes with schizophrenia and/or bipolar disorder. To our knowledge, this is also the first report of a multiplication of the ADAMTSL1 gene and the smallest deletion of the PAK2 gene in a patient with EOS, and one of the few reports of the 47, XYY karyotype in a patient with EOB.
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Affiliation(s)
- Hojka Gregoric Kumperscak
- Department of Pediatrics, University Medical Center Maribor, Maribor, Slovenia.,Medical Faculty, University of Maribor, Maribor, Slovenia
| | - Danijela Krgovic
- Medical Faculty, University of Maribor, Maribor, Slovenia.,Laboratory of Medical Genetics, University Medical Center Maribor, Maribor, Slovenia
| | - Maja Drobnic Radobuljac
- Unit for Intensive Child and Adolescent Psychiatry, Center for Mental Health, University Psychiatric Clinic Ljubljana, Ljubljana, Slovenia.,Medical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Nina Senica
- Department of Pediatrics, University Medical Center Maribor, Maribor, Slovenia
| | - Andreja Zagorac
- Laboratory of Medical Genetics, University Medical Center Maribor, Maribor, Slovenia
| | - Nadja Kokalj Vokac
- Medical Faculty, University of Maribor, Maribor, Slovenia.,Laboratory of Medical Genetics, University Medical Center Maribor, Maribor, Slovenia
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