rs757113497
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6
The NM_000548.5(TSC2):āc.106A>Gā(p.Thr36Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,936 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign 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. T36M) has been classified as Uncertain significance.
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 | UniProt |
---|---|---|---|---|---|---|---|
TSC2 | NM_000548.5 | c.106A>G | p.Thr36Ala | missense_variant | 2/42 | ENST00000219476.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TSC2 | ENST00000219476.9 | c.106A>G | p.Thr36Ala | missense_variant | 2/42 | 5 | NM_000548.5 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152172Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251284Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135894
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461764Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1AN XY: 727168
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152172Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74348
ClinVar
Submissions by phenotype
Tuberous sclerosis 2 Uncertain:1Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 07, 2021 | - - |
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Oct 27, 2023 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | St. Jude Molecular Pathology, St. Jude Children's Research Hospital | Jun 22, 2023 | The TSC2 c.106A>G (p.Thr36Ala) missense change has a maximum subpopulation frequency of 0.0058% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org). The in silico tool REVEL predicts a benign effect on protein function, but to our knowledge this prediction has not been confirmed by functional studies. To our knowledge, this variant has not been reported in individuals with tuberous sclerosis complex. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 25, 2021 | The p.T36A variant (also known as c.106A>G), located in coding exon 1 of the TSC2 gene, results from an A to G substitution at nucleotide position 106. The threonine at codon 36 is replaced by alanine, an amino acid with similar properties. This amino acid position is well 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. - |
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Apr 03, 2013 | This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at