NM_001387283.1:c.222+18C>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001387283.1(SMARCA4):c.222+18C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00507 in 1,562,620 control chromosomes in the GnomAD database, including 37 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0040 ( 3 hom., cov: 32)

Exomes 𝑓: 0.0052 ( 34 hom. )

Consequence

SMARCA4
NM_001387283.1 intron

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:6

Conservation

PhyloP100: -1.63

Variant links:

Genes affected

SMARCA4 (HGNC:11100): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4) The protein encoded by this gene is a member of the SWI/SNF family of proteins and is similar to the brahma protein of Drosophila. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein is part of the large ATP-dependent chromatin remodeling complex SNF/SWI, which is required for transcriptional activation of genes normally repressed by chromatin. In addition, this protein can bind BRCA1, as well as regulate the expression of the tumorigenic protein CD44. Mutations in this gene cause rhabdoid tumor predisposition syndrome type 2. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]

SMARCA4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BP6

Variant 19-10984391-C-T is Benign according to our data. Variant chr19-10984391-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 380632.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Benign=3, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00398 (607/152352) while in subpopulation SAS AF= 0.0108 (52/4832). AF 95% confidence interval is 0.00843. There are 3 homozygotes in gnomad4. There are 289 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 607 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMARCA4	NM_001387283.1 link	c.222+18C>T		intron_variant	Intron 2 of 35	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.222+18C>T		intron_variant	Intron 2 of 34	ENST00000344626.10	NP_003063.2	P51532-1A7E2E1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
SMARCA4	ENST00000646693.2 link	c.222+18C>T	intron_variant	Intron 2 of 35		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.222+18C>T	intron_variant	Intron 2 of 34	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.222+18C>T	intron_variant	Intron 2 of 34			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.222+18C>T	intron_variant	Intron 3 of 34	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.222+18C>T	intron_variant	Intron 2 of 33			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.222+18C>T	intron_variant	Intron 2 of 33			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.222+18C>T	intron_variant	Intron 3 of 34	5		ENSP00000464778.1	P51532-3

Frequencies

GnomAD3 genomes

AF:

0.00399

AC:

608

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000892

Gnomad AMI

AF:

0.00549

Gnomad AMR

AF:

0.00222

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.0108

Gnomad FIN

AF:

0.00725

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00579

Gnomad OTH

AF:

0.00335

GnomAD3 exomes

AF:

0.00455

AC:

752

AN:

165184

Hom.:

AF XY:

0.00511

AC XY:

452

AN XY:

88434

show subpopulations

Gnomad AFR exome

AF:

0.000647

Gnomad AMR exome

AF:

0.000949

Gnomad ASJ exome

AF:

0.00105

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00972

Gnomad FIN exome

AF:

0.00634

Gnomad NFE exome

AF:

0.00558

Gnomad OTH exome

AF:

0.00437

GnomAD4 exome

AF:

0.00519

AC:

7322

AN:

1410268

Hom.:

Cov.:

AF XY:

0.00542

AC XY:

3777

AN XY:

696952

show subpopulations

Gnomad4 AFR exome

AF:

0.000564

Gnomad4 AMR exome

AF:

0.00146

Gnomad4 ASJ exome

AF:

0.00123

Gnomad4 EAS exome

AF:

0.0000275

Gnomad4 SAS exome

AF:

0.0106

Gnomad4 FIN exome

AF:

0.00716

Gnomad4 NFE exome

AF:

0.00530

Gnomad4 OTH exome

AF:

0.00389

GnomAD4 genome

AF:

0.00398

AC:

607

AN:

152352

Hom.:

Cov.:

AF XY:

0.00388

AC XY:

289

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.000890

Gnomad4 AMR

AF:

0.00216

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.0108

Gnomad4 FIN

AF:

0.00725

Gnomad4 NFE

AF:

0.00579

Gnomad4 OTH

AF:

0.00331

Alfa

AF:

0.00427

Hom.:

Bravo

AF:

0.00297

Asia WGS

AF:

0.00231

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:4

May 15, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Aug 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

SMARCA4: BS1, BS2 -

Sep 27, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Uncertain:1

Nov 22, 2016

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.222+18C>T intronic alteration consists of a C to T substitution 8 nucleotides after coding exon 1 in the SMARCA4 gene. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not specified

Benign:1

Oct 30, 2017

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Rhabdoid tumor predisposition syndrome 2

Benign:1

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

1.9

DANN

Benign

0.72

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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