|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
We show here that only the paternally-inherited IGF2 allele is transcriptionally active in the index patient of one family with inherited BWS.
|
7957404 |
1994 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
This study defines one or more gene loci for BWS on 11p15.5 in the genomic region from D11S12 to IGF2.
|
8518793 |
1993 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
In order to screen for other genetic predispositions to BWS, the conserved sequences between human and mouse differentially methylated regions (DMRs) of the IGF2 gene were analyzed for variants.
|
14645199 |
2004 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
By analysing the methylation pattern at the IGF2-H19 locus together with the clinical phenotypes in the individuals with maternal and those with paternal transmission of five different deletions, we demonstrate that maternal transmission of 1.4-1.8 kb deletions in the IC1 region co-segregates with the hypermethylation of the residual CTSs and BWS phenotype with complete penetrance, whereas normal phenotype is observed upon paternal transmission.
|
17158821 |
2007 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
The relevant imprinted chromosomal region in BWS is 11p15.5, which consists of two imprinting domains, IGF2/H19 and CDKN1C/KCNQ1OT1.
|
23719190 |
2013 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
In Wiedemann-Beckwith syndrome (WBS) a putative disease gene resides at the tip of the short arm of chromosome 11 in the region of the insulin growth like factor II (IGF-II) gene.
|
1356785 |
1992 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
The association of a chromosome 18 deletion and BWS may be coincidental or may indicate the location of a trans activating regulator element for maintenance of IGF2 imprinting.
|
9507400 |
1998 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Recently, we showed that a subgroup of BWS patients have loss of methylation (LOM) at a differentially methylated region (KvDMR1) within the KCNQ1 gene centromeric to the IGF2 and H19 genes.
|
11106355 |
2000 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Loss of imprinting at IGF2, generally through an H19-independent mechanism, is associated with a large percentage of patients with the overgrowth and cancer predisposition condition Beckwith-Wiedemann syndrome (BWS).
|
10393948 |
1999 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Genetic lesions at chromosome 11p15 have been associated with Beck-Wiedemann syndrome and Wilms' tumour for several years and the presence of the gene encoding insulin-like growth factor-II (IGF-II) in this region has given rise to much speculation over the involvement of this factor in these growth defects.
|
9239720 |
1997 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
This excess of IGF-II causes somatic overgrowth, visceromegaly, placentomegaly, omphalocele, and cardiac and adrenal defects, which are also features of the Beckwith-Wiedemann syndrome (BWS), a genetically complex human disorder associated with chromosomal abnormalities in the 11p15.5 region where the IGF2 gene resides.
|
9389646 |
1997 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
The same region includes IGF2 and CDKN1C and is well known to harbour alterations in patients suffering from Beckwith-Wiedemann syndrome.
|
15234339 |
2004 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
BWS is associated with various genetic alterations: a variety of molecular lesions are described on the chromosome 11p15, affecting gene expression for IGF2, H19, CDKN1C and KCNQ1OT1.
|
27345568 |
2016 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
We also examined p57KIP2 expression in the normal kidney and tongue of patients with Beckwith-Wiedemann syndrome (BWS), which predisposes to WT and also involves LOI of IGF2 and H19.
|
8971182 |
1996 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Maternally inherited genetic defects affecting the ICR1 domain have been associated with ICR1 hypermethylation and Beckwith-Wiedemann syndrome (an overgrowth syndrome, the clinical and molecular mirror of SRS), and paternal deletions of IGF2 enhancers have been detected in four SRS patients.
|
27701793 |
2017 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
For example, loss of proper imprinting control at the IGF2-H19 domain is a hallmark of cancer and Beckwith-Wiedemann syndrome, with no targeted therapeutic approaches available.
|
12621455 |
2003 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Neuroblastoma, which is an embryonal tumor originating from neural crest-derived cells, occasionally occurs in individuals with the Beckwith-Wiedemann syndrome; Wilm's tumor and embryonal rhabdomyosarcoma occur even more frequently in the Beckwith-Wiedemann syndrome; and paternal uniparental disomy of H19 and IGF2 loci (chromosome 11p15) is present in the Beckwith-Wiedemann syndrome.
|
7614476 |
1995 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
These findings suggest that sporadic BWS is not associated with a general alteration of methylation imprinting of the IGF2 and H19 genes.
|
7987305 |
1994 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
This study of a large maternal deletion encompassing the H19 gene and complete ICR1 is the first to demonstrate transcriptional consequences on IGF2 in addition to methylation effects resulting in severe overgrowth and occurrence of multiple tumors in a BWS patient.
|
27650505 |
2017 |
|
Beckwith-Wiedemann Syndrome
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
We investigated whether common variation in copy number in the BWS/SRS 11p15 region or altered methylation levels at IGF2/H19 ICR or KCNQ10T1 ICR was associated with SGA.
|
24934635 |
2014 |
|
Nephroblastoma
|
0.500 |
GeneticVariation
|
disease |
BEFREE |
Epigenetic abnormalities at the IGF2/H19 locus play a key role in the onset of Wilms tumor.
|
23074036 |
2013 |
|
Nephroblastoma
|
0.500 |
GeneticVariation
|
disease |
BEFREE |
Relaxation of imprinting at the insulin-like growth factor II (IFG-II)/H19 locus is a major mechanism involved in the onset of sporadic Wilms tumor and several other embryonal tumors.
|
9144243 |
1997 |
|
Nephroblastoma
|
0.500 |
GeneticVariation
|
disease |
BEFREE |
We have reported that the loss of the insulin-like growth factor-2 (IGF2) gene imprinting results in the deregulation of both IGF2 alleles, which may contribute to the onset of Wilms tumor.
|
8644850 |
1996 |
|
Nephroblastoma
|
0.500 |
GeneticVariation
|
disease |
BEFREE |
We describe a family with overgrowth in three generations and Wilms' tumor in two generations, with paternal inheritance of a cis-duplication at 11p15.5 spanning the BWS IC1 region and including H19, IGFII, INS, and TH.
|
17325026 |
2007 |
|
Nephroblastoma
|
0.500 |
GeneticVariation
|
disease |
BEFREE |
Using a combination of single-strand conformation polymorphism (SSCP) and polymerase chain reaction (PCR) sequencing techniques, no mutations were identified in the WT1 tumour-suppressor gene from the 11p13 region, but a novel polymorphism was identified in exon 1. mRNA expression studies using the insulin-like growth factor II (IGF-II) gene, located in 11p15, showed that there was no relaxation of imprinting at this locus.
|
7911030 |
1994 |