Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
Angelman syndrome (AS) is a severe neurodevelopmental disorder caused by either disruptions of the gene UBE3A or deletion of chromosome 15 at 15q11-q13, which encompasses UBE3A and several other genes, including GABRB3, GABRA5, GABRG3, encoding gamma-aminobutyric acid type A receptor subunits (β3, α5, γ3).
|
30826071 |
2019 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
These results suggest that impairment in GABRB3 downregulates OCA2 and indirectly causes ocular hypopigmentation and visual defects in AS and PWS.
|
28009282 |
2016 |
Angelman Syndrome
|
0.400 |
AlteredExpression
|
disease |
BEFREE |
Quantitative real-time RT-PCR analysis of PWS and AS samples with paternal and maternal 15q11-13 deletions revealed a paternal expression bias of GABRB3, while RTT brain samples showed a significant reduction in GABRB3 and UBE3A.
|
17339270 |
2007 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
CTD_human |
Since most children with Angelman syndrome are autosomal heterozygotes of maternal origin, apparently through genomic imprinting, we used gabrb3-deficient heterozygote mice of defined parental origin to investigate whether this phenotype is also maternally imprinted in mouse.
|
15878204 |
2005 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
We have screened the families of the Collaborative Linkage Study of Autism for several markers spanning a candidate region covering approximately 2 Mb and including the Angelman syndrome gene (UBE3A) and a cluster of gamma-aminobutyric acid (GABA(A)) receptor subunit genes (GABRB3, GABRA5, and GABRG3).
|
11543639 |
2001 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
These gabrb3 gene knockout mice provide direct evidence that a reduction of a specific subunit of the GABA(A) receptor system can result in epilepsy and support a GABAergic role in the pathophysiology of Angelman syndrome.
|
10515160 |
1999 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
Involvement of other genes in the chromosome 15q11-13 deletion, such as GABRB3, may explain severe epilepsy in AS.
|
9546330 |
1998 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
The loss of the single gene, gabrb3, in these mice is sufficient to cause phenotypic traits that have marked similarities to the clinical features of AS, indicating that impaired expression of the GABRB3 gene in humans probably contributes to the overall phenotype of Angelman syndrome.
|
9763493 |
1998 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
Clinical reassessment and the use of molecular studies, including methylation analysis with an SNRPN probe, microsatellite analyses of D15S11, GABRB3 and D15S113 loci, and fluorescence in situ hybridization (FISH) using the SNRPN and GABRB3 probes, are consistent with a diagnosis of Angelman syndrome (AS) due to paternal isodisomy.
|
9831341 |
1998 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
The common deletion of GABRB 3 was documented in those AS cases (n = 15) by FISH.
|
9044396 |
1997 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
Fluorescence in situ hybridization (FISH) using cosmid probes for SNRPN, D15S10, and GABRB3 for the Prader-Willi syndrome (PWS)/Angelman syndrome (AS) critical region were not present on the derived chromosome.
|
9128934 |
1997 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
We have evaluated fluorescence in situ hybridization (FISH) analysis for the clinical laboratory detection of the 15q11-q13 deletion seen in Prader-Willi syndrome (PWS) and Angelman syndrome (AS) using probes for loci D15S11, SNRPN, D15S10, and GABRB3.
|
8882776 |
1996 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
In a series of 18 individuals comprising parents of Angelman syndrome (AS) patients and AS patients with large deletions, microdeletions, and no deletions, we utilized fluorescence in situ hybridization (FISH) with genomic phage clones for loci D15S63 and GABRB3 for deletion detection of chromosome 15q11-q13.
|
7747771 |
1995 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
Of 8 familial cases, 3 sibs from one family had a molecular deletion involving only 2 loci, D15S10 and GABRB3, which define the critical region for AS phenotypes.
|
7802001 |
1994 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
To date, the AS critical region has been defined by an inherited deletion of approximately 1.5Mb, spanning the 3-21 (D15S10), LS6-1 (D15S113) and GABRB3 loci.
|
7987324 |
1994 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
Molecular analysis of patients with varying deletions has localized the AS locus to the interval between D15S113 and GABRB3 and the PWS locus between D15S13 and D15S113.
|
8188222 |
1994 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
This recombination within the AS critical region confirmed the exclusion of GABRB3 as a candidate gene for AS.
|
7810569 |
1994 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
The GABRB3/GABRA5 region appears, therefore, to be enriched for highly informative (CA)n. This set of closely spaced, short tandem repeat polymorphisms will be useful in the molecular analyses of Prader-Willi and Angelman syndromes and in high-resolution studies of genetic recombination within this region.
|
8188218 |
1994 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
Chromosomal rearrangement breakpoints--in one Angelman syndrome (AS) patient with an unbalanced translocation and in another patient with a submicroscopic deletion--are located within the large GABRB3 intron.
|
8389098 |
1993 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
Analysis of linkage of AS to GABRB3 in these three families, on the assumption of imprinted inheritance (i.e., penetrance of an AS mutation is 1 if transmitted maternally and is 0 if transmitted paternally), indicates a maximum lod score of 3.52 at theta = 0.
|
8317476 |
1993 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
DNA studies in 22 families with Angelman syndrome (AS) were performed using the chromosome 15 marker loci D15S9, D15S10, D15S11, D15S12, D15S13, D15S18, D15S24, D15S86, the alpha-actin gene and the GABA beta 3 receptor gene (GABRB3).
|
8094063 |
1993 |
Angelman Syndrome
|
0.400 |
Biomarker
|
disease |
BEFREE |
FISH analysis on a previously reported case of familial AS confirmed a submicroscopic deletion including YACs corresponding to LS6-1, TD3-21 and GABRB3 and supports the separation of the PWS and AS critical regions.
|
1363801 |
1992 |
Angelman Syndrome
|
0.400 |
GeneticVariation
|
disease |
BEFREE |
Deletion of this gene (GABRB3) was found in AS and PWS patients with interstitial cytogenetic deletions.
|
1714232 |
1991 |