dbSNP rs369557828: SMARCB1:c.93+7C>T (chr22-23787269-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_ModerateBP6_ModerateBS2

The NM_003073.5(SMARCB1):c.93+7C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000313 in 1,567,500 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

SMARCB1
NM_003073.5 splice_region, intron

Scores

Splicing: ADA: 0.001626

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: 0.880

Variant links:

Genes affected

SMARCB1 (HGNC:11103): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily b, member 1) The protein encoded by this gene is part of a complex that relieves repressive chromatin structures, allowing the transcriptional machinery to access its targets more effectively. The encoded nuclear protein may also bind to and enhance the DNA joining activity of HIV-1 integrase. This gene has been found to be a tumor suppressor, and mutations in it have been associated with malignant rhabdoid tumors. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2015]

SMARCB1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.42).

BP6

Variant 22-23787269-C-T is Benign according to our data. Variant chr22-23787269-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 416322.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 20 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
SMARCB1	NM_003073.5 link	c.93+7C>T	splice_region_variant, intron_variant	Intron 1 of 8	ENST00000644036.2	NP_003064.2	Q12824-1
SMARCB1	NM_001362877.2 link	c.93+7C>T	splice_region_variant, intron_variant	Intron 1 of 8		NP_001349806.1
SMARCB1	NM_001317946.2 link	c.93+7C>T	splice_region_variant, intron_variant	Intron 1 of 8		NP_001304875.1	G5E975Q9H836
SMARCB1	NM_001007468.3 link	c.93+7C>T	splice_region_variant, intron_variant	Intron 1 of 8		NP_001007469.1	Q12824-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SMARCB1	ENST00000644036.2 link	c.93+7C>T		splice_region_variant, intron_variant	Intron 1 of 8		NM_003073.5	ENSP00000494049.2		Q12824-1

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

151720

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000438

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:

0.0000431

AC:

AN:

231772

Hom.:

AF XY:

0.0000158

AC XY:

AN XY:

126946

show subpopulations

Gnomad AFR exome

AF:

0.000593

Gnomad AMR exome

AF:

0.0000311

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:

0.00000951

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000205

AC:

AN:

1415676

Hom.:

Cov.:

AF XY:

0.0000212

AC XY:

AN XY:

706158

show subpopulations

Gnomad4 AFR exome

AF:

0.000620

Gnomad4 AMR exome

AF:

0.0000465

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000239

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.27e-7

Gnomad4 OTH exome

AF:

0.0000682

GnomAD4 genome

AF:

0.000132

AC:

AN:

151824

Hom.:

Cov.:

AF XY:

0.0000943

AC XY:

AN XY:

74230

show subpopulations

Gnomad4 AFR

AF:

0.000436

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:

0.000135

Hom.:

Bravo

AF:

0.000162

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

SMARCB1-related disorder

Benign:1

Jun 03, 2024

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Jan 11, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely 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

-0.42

CADD

Benign

DANN

Benign

0.95

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0016

dbscSNV1_RF

Benign

0.28

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