5-179820952-G-T

Position:

• chr5-179820952-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_003900.5(SQSTM1):​c.16G>T​(p.Val6Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000212 in 1,412,216 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SQSTM1 NM_003900.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.07

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SQSTM1	NM_003900.5	c.16G>T	p.Val6Leu	missense_variant	1/8	ENST00000389805.9
SQSTM1	NM_001142298.2	c.-47-2006G>T		intron_variant
SQSTM1	NM_001142299.2	c.-47-2006G>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SQSTM1	ENST00000389805.9	c.16G>T	p.Val6Leu	missense_variant	1/8	1	NM_003900.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000212 AC: 3 AN: 1412216 Hom.: 0 Cov.: 31 AF XY: 0.00000428 AC XY: 3 AN XY: 701324

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: 0.00000274

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Paget disease of bone 2, early-onset;C5779877:Frontotemporal dementia and/or amyotrophic lateral sclerosis 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Dec 02, 2021

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 1019498). This variant has not been reported in the literature in individuals affected with SQSTM1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 6 of the SQSTM1 protein (p.Val6Leu). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.71
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.070
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.43	T;T;T;T
Eigen	Benign	0.083
Eigen_PC	Benign	0.075
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.92	D;.;D;.
M_CAP	Pathogenic	0.93	D
MetaRNN	Uncertain	0.51	D;D;D;D
MetaSVM	Uncertain	0.059	D
MutationAssessor	Uncertain	2.1	M;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-2.1	N;.;N;N
REVEL	Benign	0.21
Sift	Pathogenic	0.0	D;.;D;D
Sift4G	Uncertain	0.011	D;D;D;D
Polyphen		0.25	B;.;.;P
Vest4		0.68
MutPred		0.42		Loss of sheet (P = 0.0054);Loss of sheet (P = 0.0054);Loss of sheet (P = 0.0054);Loss of sheet (P = 0.0054);
MVP		0.94
MPC		0.53
ClinPred		0.92	D
GERP RS		2.6
Varity_R		0.74
gMVP		0.71

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

Other links and lift over

dbSNP: rs778461636; hg19: chr5-179247952;