chr17-40632329-C-A

Position:

• chr17-40632329-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003079.5(SMARCE1):​c.580G>T​(p.Ala194Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,726 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A194T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: SMARCE1 NM_003079.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.77

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 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20000151).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SMARCE1	NM_003079.5	c.580G>T	p.Ala194Ser	missense_variant	8/11	ENST00000348513.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SMARCE1	ENST00000348513.12	c.580G>T	p.Ala194Ser	missense_variant	8/11	1	NM_003079.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251212 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135768

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461726 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727166

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

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

Dec 31, 2021

This variant has not been reported in the literature in individuals affected with SMARCE1-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.006%). This sequence change replaces alanine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 194 of the SMARCE1 protein (p.Ala194Ser). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.15	T;.;.;.;.;.;.;.;.;T;.;.;T;.;.;.;.;.;.;.
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.96	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	0.0099	T
MetaRNN	Benign	0.20	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.78	T
MutationAssessor	Benign	1.4	L;.;.;.;L;.;.;.;.;L;.;L;.;.;.;L;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-1.2	N;.;.;.;.;.;.;.;N;.;.;.;N;.;.;.;.;.;.;.
REVEL	Benign	0.080
Sift	Benign	0.17	T;.;.;.;.;.;.;.;T;.;.;.;T;.;.;.;.;.;.;.
Sift4G	Benign	0.27	T;.;.;.;.;T;.;T;T;.;.;.;T;T;.;.;.;.;.;.
Polyphen		0.12	B;.;.;.;.;.;.;.;.;B;.;.;.;.;.;.;.;.;.;.
Vest4		0.34
MutPred		0.31		Gain of disorder (P = 0.0319);.;.;.;Gain of disorder (P = 0.0319);.;.;.;.;Gain of disorder (P = 0.0319);.;Gain of disorder (P = 0.0319);.;.;.;Gain of disorder (P = 0.0319);.;Gain of disorder (P = 0.0319);.;.;
MVP		0.32
MPC		0.90
ClinPred		0.37	T
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.23
gMVP		0.54

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs753397709; hg19: chr17-38788581;