rs780682938
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PM5PP3_ModerateBP6BS2
The NM_000548.5(TSC2):āc.2297T>Cā(p.Val766Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,613,506 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. V766M) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000548.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
TSC2 | NM_000548.5 | c.2297T>C | p.Val766Ala | missense_variant | 21/42 | ENST00000219476.9 | NP_000539.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
TSC2 | ENST00000219476.9 | c.2297T>C | p.Val766Ala | missense_variant | 21/42 | 5 | NM_000548.5 | ENSP00000219476.3 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152220Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000797 AC: 2AN: 251056Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135846
GnomAD4 exome AF: 0.00000821 AC: 12AN: 1461286Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5AN XY: 726906
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152220Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74366
ClinVar
Submissions by phenotype
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jan 17, 2023 | 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 - |
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Jul 02, 2024 | - - |
Tuberous sclerosis 2 Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Nov 05, 2023 | - - |
Likely benign, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 07, 2021 | - - |
Tuberous sclerosis syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Aug 13, 2024 | This missense variant replaces valine with alanine at codon 766 of the TSC2 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 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 TSC2-related disorders in the literature. This variant has been identified in 2/251056 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. - |
Hereditary cancer-predisposing syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | May 08, 2023 | 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. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at