14-95096101-G-C
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate
The NM_177438.3(DICER1):c.4819C>G(p.Arg1607Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 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. R1607Q) has been classified as Likely benign.
Frequency
Consequence
NM_177438.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DICER1 | NM_177438.3 | c.4819C>G | p.Arg1607Gly | missense_variant | 23/27 | ENST00000343455.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DICER1 | ENST00000343455.8 | c.4819C>G | p.Arg1607Gly | missense_variant | 23/27 | 1 | NM_177438.3 | P1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome Cov.: 32
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
DICER1-related tumor predisposition Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 09, 2022 | This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 1607 of the DICER1 protein (p.Arg1607Gly). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The glycine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. ClinVar contains an entry for this variant (Variation ID: 934284). This variant has not been reported in the literature in individuals affected with DICER1-related conditions. This variant is not present in population databases (gnomAD no frequency). 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 | Apr 22, 2021 | The p.R1607G variant (also known as c.4819C>G), located in coding exon 22 of the DICER1 gene, results from a C to G substitution at nucleotide position 4819. The arginine at codon 1607 is replaced by glycine, an amino acid with dissimilar properties. This amino acid position is not well 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. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at