9-2029072-C-T

Position:

chr9-2029072-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PP2PP3BP6_Very_StrongBS1BS2

The NM_003070.5(SMARCA2):c.50C>T(p.Pro17Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000191 in 1,567,482 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. P17P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

SMARCA2
NM_003070.5 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 6.17

Variant links:

Genes affected

SMARCA2 (HGNC:11098): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 2) The protein encoded by this gene is a member of the SWI/SNF family of proteins and is highly 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. Alternatively spliced transcript variants encoding different isoforms have been found for this gene, which contains a trinucleotide repeat (CAG) length polymorphism. [provided by RefSeq, Jan 2014]

SMARCA2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SMARCA2. . Gene score misZ 5.054 (greater than the threshold 3.09). Trascript score misZ 4.663 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability-sparse hair-brachydactyly syndrome, Coffin-Siris syndrome 1.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.826

BP6

Variant 9-2029072-C-T is Benign according to our data. Variant chr9-2029072-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1186796.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0000328 (5/152376) while in subpopulation AFR AF= 0.0000721 (3/41598). AF 95% confidence interval is 0.0000191. There are 0 homozygotes in gnomad4. There are 2 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SMARCA2	NM_003070.5 linkuse as main transcript	c.50C>T	p.Pro17Leu	missense_variant	2/34	ENST00000349721.8
SMARCA2	NM_001289396.1 linkuse as main transcript	c.50C>T	p.Pro17Leu	missense_variant	2/34
SMARCA2	NM_139045.4 linkuse as main transcript	c.50C>T	p.Pro17Leu	missense_variant	2/33
SMARCA2	NM_001289397.2 linkuse as main transcript	c.50C>T	p.Pro17Leu	missense_variant	2/33

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SMARCA2	ENST00000349721.8 linkuse as main transcript	c.50C>T	p.Pro17Leu	missense_variant	2/34	5	NM_003070.5	P2	P51531-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152258

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000723

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:

0.0000112

AC:

AN:

178370

Hom.:

AF XY:

0.0000104

AC XY:

AN XY:

95814

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000401

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000139

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000177

AC:

AN:

1415106

Hom.:

Cov.:

AF XY:

0.0000157

AC XY:

AN XY:

699872

show subpopulations

Gnomad4 AFR exome

AF:

0.0000623

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000123

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000193

Gnomad4 OTH exome

AF:

0.0000171

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152376

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74510

show subpopulations

Gnomad4 AFR

AF:

0.0000721

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

Bravo

AF:

0.0000151

ExAC

AF:

0.0000250

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 27, 2024

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Jun 07, 2022

See Variant Classification Assertion Criteria. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.060

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

.;.;T;D;T;T;T;.;T;T;D

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.91

.;D;.;.;.;D;D;D;D;D;D

M_CAP

Uncertain

0.21

MetaRNN

Pathogenic

0.83

D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

0.69

MutationAssessor

Benign

1.8

L;.;.;L;.;.;.;L;.;.;L

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.91

PROVEAN

Uncertain

-3.5

D;D;.;D;.;.;D;D;D;.;D

REVEL

Uncertain

0.54

Sift

Pathogenic

0.0

D;D;.;D;.;.;D;D;D;.;D

Sift4G

Uncertain

0.012

D;D;.;D;.;.;T;D;D;.;D

Polyphen

1.0

D;.;.;D;.;.;.;D;.;.;D

Vest4

0.60

MVP

0.76

MPC

0.048

ClinPred

0.96

GERP RS

5.4

Varity_R

0.52

gMVP

0.20

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