14-95113105-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2
The NM_177438.3(DICER1):c.2027G>A(p.Arg676Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,494 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R676G) has been classified as Uncertain significance.
Frequency
Consequence
NM_177438.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DICER1 | NM_177438.3 | c.2027G>A | p.Arg676Gln | missense_variant | 12/27 | ENST00000343455.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DICER1 | ENST00000343455.8 | c.2027G>A | p.Arg676Gln | missense_variant | 12/27 | 1 | NM_177438.3 | P1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251352Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135848
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461494Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727106
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
DICER1-related tumor predisposition Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 29, 2023 | This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 676 of the DICER1 protein (p.Arg676Gln). This variant is present in population databases (no rsID available, gnomAD 0.006%). 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: 820551). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt DICER1 protein function with a positive predictive value of 80%. 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. - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 03, 2024 | The p.R676Q variant (also known as c.2027G>A), located in coding exon 11 of the DICER1 gene, results from a G to A substitution at nucleotide position 2027. The arginine at codon 676 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at