rs773552098
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_003900.5(SQSTM1):c.46G>A(p.Ala16Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000699 in 1,574,758 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_003900.5 missense
Scores
Clinical Significance
Conservation
Publications
- neurodegeneration with ataxia, dystonia, and gaze palsy, childhood-onsetInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Illumina
- frontotemporal dementia and/or amyotrophic lateral sclerosis 3Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen
- osteosarcomaInheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
- Paget disease of bone 3Inheritance: AD Classification: STRONG, LIMITED Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
- amyotrophic lateral sclerosisInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- behavioral variant of frontotemporal dementiaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- frontotemporal dementia with motor neuron diseaseInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| SQSTM1 | NM_003900.5 | c.46G>A | p.Ala16Thr | missense_variant | Exon 1 of 8 | ENST00000389805.9 | NP_003891.1 | |
| SQSTM1 | NM_001142298.2 | c.-47-1976G>A | intron_variant | Intron 2 of 8 | NP_001135770.1 | |||
| SQSTM1 | NM_001142299.2 | c.-47-1976G>A | intron_variant | Intron 2 of 8 | NP_001135771.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| SQSTM1 | ENST00000389805.9 | c.46G>A | p.Ala16Thr | missense_variant | Exon 1 of 8 | 1 | NM_003900.5 | ENSP00000374455.4 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152206Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000100 AC: 2AN: 199356 AF XY: 0.0000178 show subpopulations
GnomAD4 exome AF: 0.00000703 AC: 10AN: 1422552Hom.: 0 Cov.: 31 AF XY: 0.00000565 AC XY: 4AN XY: 707896 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152206Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1AN XY: 74354 show subpopulations
ClinVar
Submissions by phenotype
not provided Uncertain:2
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Has not been previously published as pathogenic or benign to our knowledge; Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function -
Inborn genetic diseases Uncertain:1
The c.46G>A (p.A16T) alteration is located in exon 1 (coding exon 1) of the SQSTM1 gene. This alteration results from a G to A substitution at nucleotide position 46, causing the alanine (A) at amino acid position 16 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
SQSTM1-related disorder Uncertain:1
The SQSTM1 c.46G>A variant is predicted to result in the amino acid substitution p.Ala16Thr. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0022% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/5-179247982-G-A). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -
Paget disease of bone 2, early-onset;C5779877:Frontotemporal dementia and/or amyotrophic lateral sclerosis 1 Uncertain:1
This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 16 of the SQSTM1 protein (p.Ala16Thr). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with SQSTM1-related conditions. ClinVar contains an entry for this variant (Variation ID: 423540). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt SQSTM1 protein function with a negative predictive value of 80%. 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at