rs753685955

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_003900.5(SQSTM1):c.802C>G(p.Leu268Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000929 in 1,614,114 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L268P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

SQSTM1
NM_003900.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 3.76

Variant links:

Genes affected

SQSTM1 (HGNC:11280): (sequestosome 1) This gene encodes a multifunctional protein that binds ubiquitin and regulates activation of the nuclear factor kappa-B (NF-kB) signaling pathway. The protein functions as a scaffolding/adaptor protein in concert with TNF receptor-associated factor 6 to mediate activation of NF-kB in response to upstream signals. Alternatively spliced transcript variants encoding either the same or different isoforms have been identified for this gene. Mutations in this gene result in sporadic and familial Paget disease of bone. [provided by RefSeq, Mar 2009]

SQSTM1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06951392).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SQSTM1	NM_003900.5 linkuse as main transcript	c.802C>G	p.Leu268Val	missense_variant	6/8	ENST00000389805.9
SQSTM1	NM_001142298.2 linkuse as main transcript	c.550C>G	p.Leu184Val	missense_variant	7/9
SQSTM1	NM_001142299.2 linkuse as main transcript	c.550C>G	p.Leu184Val	missense_variant	7/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SQSTM1	ENST00000389805.9 linkuse as main transcript	c.802C>G	p.Leu268Val	missense_variant	6/8	1	NM_003900.5	P1	Q13501-1
SQSTM1	ENST00000360718.5 linkuse as main transcript	c.550C>G	p.Leu184Val	missense_variant	5/7	1			Q13501-2
SQSTM1	ENST00000510187.5 linkuse as main transcript	c.802C>G	p.Leu268Val	missense_variant	6/7	5
SQSTM1	ENST00000466342.1 linkuse as main transcript	n.501C>G		non_coding_transcript_exon_variant	4/4	2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251452

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135906

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000989

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Frontotemporal dementia and/or amyotrophic lateral sclerosis 1;C4085251:Paget disease of bone 2, early-onset

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 10, 2023

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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SQSTM1 protein function. ClinVar contains an entry for this variant (Variation ID: 542158). This missense change has been observed in individual(s) with Alzheimer's disease or amyotrophic lateral sclerosis (PMID: 25796131, 32397312). This variant is present in population databases (rs753685955, gnomAD 0.002%). This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 268 of the SQSTM1 protein (p.Leu268Val). -

SQSTM1-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 02, 2024

The SQSTM1 c.802C>G variant is predicted to result in the amino acid substitution p.Leu268Val. This variant has been reported with uncertain significance in an individual with early onset Alzheimer disease and an individual with familial amyotrophic lateral sclerosis; in both individuals, additional variants were reported (Table 3, Cuyvers E et al. 2015. PubMed ID: 25796131; Table 2, Scarlino S et al. 2020. PubMed ID: 32397312). This variant is reported in 0.0015% of alleles in individuals of European (Non-Finnish) descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Mayo Clinic Laboratories, Mayo Clinic

Feb 23, 2023

BP4 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

0.0011

BayesDel_noAF

Benign

-0.24

Cadd

Benign

Dann

Benign

0.77

DEOGEN2

Benign

0.10

T;T;.

Eigen

Benign

-0.47

Eigen_PC

Benign

-0.29

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.84

T;.;T

M_CAP

Benign

0.042

MetaRNN

Benign

0.070

T;T;T

MetaSVM

Benign

-0.87

MutationAssessor

Benign

1.1

L;.;.

MutationTaster

Benign

0.82

N;N;N;N;N

PrimateAI

Benign

0.47

PROVEAN

Benign

0.68

N;N;N

REVEL

Benign

0.13

Sift

Benign

1.0

T;T;T

Sift4G

Benign

1.0

T;T;T

Polyphen

0.0040

B;B;.

Vest4

0.053

MutPred

0.15

Loss of catalytic residue at L268 (P = 0.0203);Loss of catalytic residue at L268 (P = 0.0203);.;

MVP

0.86

MPC

0.13

ClinPred

0.11

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.081

gMVP

0.22

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over