chr17-40631618-C-T

Position:

• chr17-40631618-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_003079.5(SMARCE1):​c.790G>A​(p.Asp264Asn) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SMARCE1 NM_003079.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.63

Genes affected

SMARCE1 (HGNC:11109): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily e, member 1) The protein encoded by this gene is part of the large ATP-dependent chromatin remodeling complex SWI/SNF, which is required for transcriptional activation of genes normally repressed by chromatin. The encoded protein, either alone or when in the SWI/SNF complex, can bind to 4-way junction DNA, which is thought to mimic the topology of DNA as it enters or exits the nucleosome. The protein contains a DNA-binding HMG domain, but disruption of this domain does not abolish the DNA-binding or nucleosome-displacement activities of the SWI/SNF complex. Unlike most of the SWI/SNF complex proteins, this protein has no yeast counterpart. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.32901314).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMARCE1	NM_003079.5	c.790G>A	p.Asp264Asn	missense_variant	9/11	ENST00000348513.12	NP_003070.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMARCE1	ENST00000348513.12	c.790G>A	p.Asp264Asn	missense_variant	9/11	1	NM_003079.5	ENSP00000323967	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1444324 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 719794

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Familial meningioma Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 02, 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 SMARCE1 protein function. ClinVar contains an entry for this variant (Variation ID: 532243). This variant has not been reported in the literature in individuals affected with SMARCE1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 264 of the SMARCE1 protein (p.Asp264Asn). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.46
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.21	T;.;.;.;.;.;.;.;.;T;.;.;T;.;.;.;.;.;.;.
Eigen	Uncertain	0.42
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	.;.;D;D;.;D;D;D;D;D;D;.;D;D;D;D;D;D;D;D
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.33	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.68	T
MutationAssessor	Uncertain	2.0	M;.;.;.;M;.;.;.;.;M;.;M;.;.;.;M;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-2.3	N;.;.;.;.;.;.;.;N;.;.;.;N;.;.;.;.;.;.;.
REVEL	Benign	0.13
Sift	Benign	0.070	T;.;.;.;.;.;.;.;T;.;.;.;T;.;.;.;.;.;.;.
Sift4G	Benign	0.12	T;.;.;.;.;T;.;T;T;.;.;.;T;T;.;.;.;.;.;.
Polyphen		0.26	B;.;.;.;.;.;.;.;.;B;.;.;.;.;.;.;.;.;.;.
Vest4		0.23
MutPred		0.23		Gain of MoRF binding (P = 0.0345);.;.;.;Gain of MoRF binding (P = 0.0345);.;.;.;.;Gain of MoRF binding (P = 0.0345);.;Gain of MoRF binding (P = 0.0345);.;.;.;Gain of MoRF binding (P = 0.0345);.;Gain of MoRF binding (P = 0.0345);.;.;
MVP		0.56
MPC		1.3
ClinPred		0.83	D
GERP RS		5.7
Varity_R		0.25
gMVP		0.19

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1555605342; hg19: chr17-38787870;