Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Clinical and genetic analysis of a rare syndrome associated with neoteny

ABSTRACT: We describe a novel syndrome in six patients with extreme developmental delay and the defining characteristic of neoteny. In an effort to discover any genetic causes of this syndrome whole genome sequence (WGS) analysis of the patients and their families was performed on Complete Genomics’ nanoarray platform.

PROVIDER: EGAS00001002419 | EGA |

REPOSITORIES: EGA

ACCESS DATA

Json Xml

Similar Datasets

Clinical and molecular characterization of patients with 16p11.2 microdeletion syndrome

Project description:The study presents three cases of patients with deletions within 16p11.2 regions. Every child had characteristic craniofacial dysmorphic features and hand or feet abnormalities. The first proband had additionally obesity, epilepsy, moderate intellectual disability, aphasia, motor delay, hyperinsulinism and café au lait spots. The second proband suffered from cardiac, pulmonary and hematological problems. The third proband had motor delay, bronchial asthma and umbilical hernia. Although each patient presented characteristic features of the syndrome, children differed in clinical pictures among themselves. The genetic diagnosis of the 16p11.2 deletion syndrome was made in children at different age, based on the multiplex ligation probe-dependent ampliﬁcation (MLPA) analysis and/or microarrays methods. This study highlights the impact of the size of deleted regions, as they may affect the clinical picture of patients with 16p11.2 microdeletion syndrome. Reported cases indicates the key role of the interdisciplinary approach in 16p11.2 microdeletion syndrome diagnostics, as the care of patients with this deletion is based on regular health assessment and adjustment of the nervous system development therapy

2020-10-07 | GSE159129 | GEO

A genotype-first approach for the molecular and clinical characterization of uncommon de novo microdeletion of 20q13.33

Project description:Molecular cytogenetic techniques such as microarray analysis have allowed for a “genotype-first” approach to the characterization of chromosome abnormalities: in the absence of clinical features suggestive of a specific syndrome, patients with similar copy number imbalances can be examined for common clinical features. Using a genotype-first approach, we characterized microdeletions at 20q13.33 in six patients referred for genetic evaluation of developmental delay, mental retardation, and/or congenital anomalies. These deletions are relatively rare, with only 11 cases reported. A comparison to previously reported cases of 20q13.33 microdeletion shows phenotypic overlap, with clinical features that include mental retardation, developmental delay, speech and language deficits, seizures, and behavior problems such as autistic spectrum disorder. Based on analysis of the smallest region of overlap (SRO) among cases reported here and in previous studies, we discuss several possible candidate genes for specific clinical features, including ARFGAP1, CHRNA4, KCNQ2, and MYT1. Deletion of this region may play an important role in cognitive development. aCGH control vs. patient, total of 6 patients

2010-12-31 | E-GEOD-21536 | biostudies-arrayexpress

A genotype-first approach for the molecular and clinical characterization of uncommon de novo microdeletion of 20q13.33

2010-12-31 | GSE21536 | GEO

Clinical course and genetic characteristics for familial colorectal cancer and intestinal polyposis syndrome

Project description:Primary outcome(s): The clinical characteristic of familial colorectal cancer and intestinal polyposis syndrome;The genetic characteristic of familial colorectal cancer and intestinal polyposis syndrome Study Design: Observational Study Model : Cohort, Time Perspective : Other(Retrospective and prospective study), Enrollment : 500, Biospecimen Retention : Collect & Archive- Sample with DNA, Biospecimen Description : whole blood

| 2508990 | ecrin-mdr-crc

Project description:Whole-exome sequencing for developmental delay

| PRJNA1321735 | ENA

RNA-seq transcriptonal profiling in whole hippocampus in WT and Arid1b+/- mice

Project description:There is growing evidence for the involvement of ARID1B, a SWI/SNF ATP-dependent chromatin remodeling subunit, in a broad range of human disorders. Sequencing studies have recurrently implicated ARID1B haploinsufficiency in autism spectrum disorder (ASD), non-syndromic intellectual disability (ID), corpus callosum agenesis, and short stature. In addition, ARID1B is by far the most common cause of Coffin-Siris Syndrome (CSS), a monogenic developmental delay syndrome characterized by a combination of the neuropsychiatric and physical abnormalities mentioned above. To understand how ARID1B mutations lead to these phenotypes, we generated Arid1b mutant mice, which exhibited physical manifestations of developmental delay and behaviors reminiscent of ASD. In the brain, Arid1b haploinsufficiency resulted in changes in the expression of SWI/SNF- regulated genes implicated in ASD.

2017-06-26 | GSE92238 | GEO

Project description:An extreme human-specific delay in cortical synaptic development

| PRJNA140341 | ENA

EHMT1 gene truncation in HEK293 cells recapitulates Kleefstra Syndrome disease phenotype

Project description:Haploinsufficiency of the Euchromatin histone methyltransferase 1 (EHMT1) gene leads to Kleefstra Syndrome, a rare disease characterised by moderate to severe developmental delay/intellectual disability, childhood hypotonia and distinct facial features, comprising microcephaly. This study examines the genetic variant EHMT1_Ter (p.[Tyr1148=];[Tyr1148Leufs*9]) in HEK293 cells.

2020-09-04 | GSE157390 | GEO

Neurodevelopmental disorder risk gene DYRK1A is required for ciliogenesis and brain size in Xenopus embryos

Project description:DYRK1A (dual specificity tyrosine-(Y)-phosphorylation-regulated kinase 1 A) is a high confidence autism risk gene that encodes a conserved kinase. In addition to autism, patients with putative loss of function variants in DYRK1A exhibit microcephaly, intellectual disability, developmental delay, and congenital anomalies of the kidney and urinary tract. DYRK1A is also located within the critical region for Down syndrome; therefore, understanding the role of DYRK1A in brain development is crucial for understanding the pathobiology of multiple developmental disorders. To characterize the function of this gene, we leveraged the diploid frog, Xenopus tropicalis. We discover that Dyrk1a is expressed in ciliated tissues, localizes to ciliary axonemes and basal bodies, and is required for ciliogenesis. We also demonstrate that Dyrk1a localizes to mitotic spindles and that its inhibition leads to decreased forebrain size, abnormal cell cycle progression, and cell death during brain development. These findings provide hypotheses about potential mechanisms of pathobiology and underscore the utility of X. tropicalis as a model system for understanding neurodevelopmental disorders.

2020-06-08 | GSE149538 | GEO

CSER: Genomic Diagnosis in Children with Developmental Delay

Project description:CSER: Genomic Diagnosis in Children with Developmental Delay

| PRJNA315714 | ENA