rs201144475
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP3BP6BS2
The NM_000548.5(TSC2):c.922C>G(p.Arg308Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000811 in 1,602,976 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. R308Q) has been classified as Likely benign.
Frequency
Consequence
NM_000548.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TSC2 | NM_000548.5 | c.922C>G | p.Arg308Gly | missense_variant | 10/42 | ENST00000219476.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TSC2 | ENST00000219476.9 | c.922C>G | p.Arg308Gly | missense_variant | 10/42 | 5 | NM_000548.5 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152220Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000217 AC: 5AN: 230892Hom.: 0 AF XY: 0.0000401 AC XY: 5AN XY: 124582
GnomAD4 exome AF: 0.00000827 AC: 12AN: 1450756Hom.: 0 Cov.: 32 AF XY: 0.0000125 AC XY: 9AN XY: 720438
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152220Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74362
ClinVar
Submissions by phenotype
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Mar 08, 2022 | In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 18466115) - |
Uncertain significance, no assertion criteria provided | research | Biesecker Lab/Clinical Genomics Section, National Institutes of Health | Jul 13, 2012 | - - |
Hereditary cancer-predisposing syndrome Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 21, 2022 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Likely benign, criteria provided, single submitter | curation | Sema4, Sema4 | Nov 10, 2020 | - - |
Tuberous sclerosis syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Jan 11, 2024 | This missense variant replaces arginine with glycine at codon 308 of the TSC2 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with tuberous sclerosis complex in the literature. This variant has been identified in 5/230892 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Tuberous sclerosis 2 Benign:1
Benign, criteria provided, single submitter | clinical testing | Invitae | Dec 12, 2023 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at