rs752740048
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2
The NM_177438.3(DICER1):c.4102C>T(p.Arg1368Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000335 in 1,613,836 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1368L) has been classified as Uncertain significance.
Frequency
Consequence
NM_177438.3 missense
Scores
Clinical Significance
Conservation
Publications
- DICER1-related tumor predispositionInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- pleuropulmonary blastomaInheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
- DICER1 syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- global developmental delay - lung cysts - overgrowth - Wilms tumor syndromeInheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 152004Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000278 AC: 7AN: 251378 AF XY: 0.0000368 show subpopulations
GnomAD4 exome AF: 0.0000342 AC: 50AN: 1461832Hom.: 0 Cov.: 34 AF XY: 0.0000330 AC XY: 24AN XY: 727214 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000263 AC: 4AN: 152004Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74254 show subpopulations
ClinVar
Submissions by phenotype
not provided Uncertain:3
In silico analysis supports that this missense variant does not alter protein structure/function; Identified in an individual with Wilms tumor (Walz et al., 2015); This variant is associated with the following publications: (PMID: 28825729, 37333613, 25670082, 28748527) -
In the published literature, this variant has been reported as a germline and somatic variant in Wilms Tumor (PMID: 25670082 (2015), 28825729 (2017)). The frequency of this variant in the general population, 0.000062 (8/129108 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -
DICER1: PP2, BS1:Supporting -
not specified Uncertain:2
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ACMG criteria met: BP1 -
Global developmental delay - lung cysts - overgrowth - Wilms tumor syndrome Uncertain:1
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Hereditary cancer-predisposing syndrome Uncertain:1
The p.R1368C variant (also known as c.4102C>T), located in coding exon 21 of the DICER1 gene, results from a C to T substitution at nucleotide position 4102. The arginine at codon 1368 is replaced by cysteine, an amino acid with highly dissimilar properties. This variant was reported in 1/77 favorable histology Wilms tumors; the tumor sample did not show loss of heterozygozity (Walz AL et al. Cancer Cell. 2015 Feb;27:286-97). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
DICER1-related tumor predisposition Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at