16-2085009-A-G
Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4BP6BS2
The NM_000548.5(TSC2):āc.4552A>Gā(p.Ile1518Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,613,214 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. I1518M) 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 -6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TSC2 | NM_000548.5 | c.4552A>G | p.Ile1518Val | missense_variant | 35/42 | ENST00000219476.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TSC2 | ENST00000219476.9 | c.4552A>G | p.Ile1518Val | missense_variant | 35/42 | 5 | NM_000548.5 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152142Hom.: 0 Cov.: 34
GnomAD3 exomes AF: 0.0000160 AC: 4AN: 250406Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135760
GnomAD4 exome AF: 0.00000684 AC: 10AN: 1461072Hom.: 0 Cov.: 33 AF XY: 0.00000825 AC XY: 6AN XY: 726846
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152142Hom.: 0 Cov.: 34 AF XY: 0.0000135 AC XY: 1AN XY: 74312
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | May 15, 2024 | The c.4552A>G (p.I1518V) alteration is located in exon 35 (coding exon 34) of the TSC2 gene. This alteration results from a A to G substitution at nucleotide position 4552, causing the isoleucine (I) at amino acid position 1518 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Uncertain significance, criteria provided, single submitter | curation | Sema4, Sema4 | Mar 09, 2022 | - - |
Tuberous sclerosis 2 Benign:2
Benign, criteria provided, single submitter | clinical testing | Invitae | Apr 23, 2023 | - - |
Likely benign, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 07, 2021 | - - |
not provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Dec 30, 2020 | In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; Observed in 0.0016% (4/250406 alleles) in large population cohorts (Lek et al., 2016) - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at