rs373729361
Variant summary
Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2
The NM_177438.3(DICER1):c.2689A>G(p.Met897Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000558 in 1,613,968 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M897L) 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 -6 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152206Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000398 AC: 1AN: 251258 AF XY: 0.00 show subpopulations
GnomAD4 exome AF: 0.00000547 AC: 8AN: 1461762Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1AN XY: 727192 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152206Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74360 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
The p.M897V variant (also known as c.2689A>G), located in coding exon 16 of the DICER1 gene, results from an A to G substitution at nucleotide position 2689. The methionine at codon 897 is replaced by valine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
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DICER1-related tumor predisposition Uncertain:1
This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 897 of the DICER1 protein (p.Met897Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DICER1-related conditions. ClinVar contains an entry for this variant (Variation ID: 412070). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt DICER1 protein function with a negative predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at