Variant 22-23834152-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PM5PP2PP3_Moderate

The NM_003073.5(SMARCB1):c.1130G>T(p.Arg377Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R377G) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SMARCB1
NM_003073.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.63

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_003073.5

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr22-23834151-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 638627.Status of the report is no_assertion_criteria_provided, 0 stars.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SMARCB1. . Gene score misZ 3.6016 (greater than the threshold 3.09). Trascript score misZ 4.8554 (greater than threshold 3.09). GenCC has associacion of gene with schwannomatosis 1, familial multiple meningioma, rhabdoid tumor predisposition syndrome 1, complex neurodevelopmental disorder, intellectual disability, autosomal dominant 15, familial rhabdoid tumor, schwannomatosis, Coffin-Siris syndrome.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.87

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SMARCB1	NM_003073.5 linkuse as main transcript	c.1130G>T	p.Arg377Leu	missense_variant	9/9	ENST00000644036.2
SMARCB1	NM_001362877.2 linkuse as main transcript	c.1184G>T	p.Arg395Leu	missense_variant	9/9
SMARCB1	NM_001317946.2 linkuse as main transcript	c.1157G>T	p.Arg386Leu	missense_variant	9/9
SMARCB1	NM_001007468.3 linkuse as main transcript	c.1103G>T	p.Arg368Leu	missense_variant	9/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SMARCB1	ENST00000644036.2 linkuse as main transcript	c.1130G>T	p.Arg377Leu	missense_variant	9/9		NM_003073.5	A1	Q12824-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1441674

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

715478

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.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.53

BayesDel_noAF

Pathogenic

0.52

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.92

.;D;T;.

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Pathogenic

0.99

M_CAP

Pathogenic

0.52

MetaRNN

Pathogenic

0.87

D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.0

.;M;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.90

PROVEAN

Pathogenic

-5.1

D;.;D;.

REVEL

Pathogenic

0.89

Sift

Pathogenic

0.0

D;.;D;.

Sift4G

Uncertain

0.0050

D;.;D;.

Polyphen

0.99, 0.99

.;D;D;.

Vest4

0.88

MutPred

0.51

.;.;Loss of disorder (P = 0.1289);.;

MVP

0.96

MPC

2.8

ClinPred

0.99

GERP RS

5.1

Varity_R

0.96

gMVP

1.0

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over