rs541330074

Positions:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBS1_SupportingBS2

The NM_001134363.3(RBM20):c.1858G>A(p.Asp620Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00002 in 1,551,504 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 (★★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

RBM20
NM_001134363.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 6.89

Variant links:

Genes affected

RBM20 (HGNC:27424): (RNA binding motif protein 20) This gene encodes a protein that binds RNA and regulates splicing. Mutations in this gene have been associated with familial dilated cardiomyopathy. [provided by RefSeq, Apr 2014]

RBM20 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.11794141).

BS1

Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.0000121 (17/1399204) while in subpopulation AFR AF= 0.000475 (15/31598). AF 95% confidence interval is 0.000292. There are 0 homozygotes in gnomad4_exome. There are 8 alleles in male gnomad4_exome subpopulation. Median coverage is 30. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
RBM20	NM_001134363.3 linkuse as main transcript	c.1858G>A	p.Asp620Asn	missense_variant	8/14	ENST00000369519.4
RBM20	XM_017016103.3 linkuse as main transcript	c.1693G>A	p.Asp565Asn	missense_variant	8/14
RBM20	XM_017016104.3 linkuse as main transcript	c.1474G>A	p.Asp492Asn	missense_variant	8/14
RBM20	XM_047425116.1 linkuse as main transcript	c.1474G>A	p.Asp492Asn	missense_variant	8/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RBM20	ENST00000369519.4 linkuse as main transcript	c.1858G>A	p.Asp620Asn	missense_variant	8/14	1	NM_001134363.3	P1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000320

AC:

AN:

156468

Hom.:

AF XY:

0.0000362

AC XY:

AN XY:

82924

show subpopulations

Gnomad AFR exome

AF:

0.000253

Gnomad AMR exome

AF:

0.0000810

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:

0.00

Gnomad OTH exome

AF:

0.000228

GnomAD4 exome

AF:

0.0000121

AC:

AN:

1399204

Hom.:

Cov.:

AF XY:

0.0000116

AC XY:

AN XY:

690118

show subpopulations

Gnomad4 AFR exome

AF:

0.000475

Gnomad4 AMR exome

AF:

0.0000280

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

AF:

0.0000919

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.000337

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000869

ExAC

AF:

0.0000780

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Dilated cardiomyopathy 1DD

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 13, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Jan 01, 2024	This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 620 of the RBM20 protein (p.Asp620Asn). This variant is present in population databases (rs541330074, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with RBM20-related conditions. ClinVar contains an entry for this variant (Variation ID: 470591). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on RBM20 protein function. 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. -

Cardiomyopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Sep 13, 2017

- -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 23, 2022

The p.D620N variant (also known as c.1858G>A), located in coding exon 8 of the RBM20 gene, results from a G to A substitution at nucleotide position 1858. The aspartic acid at codon 620 is replaced by asparagine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.31

CADD

Uncertain

DANN

Pathogenic

1.0

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

0.98

M_CAP

Uncertain

0.21

MetaRNN

Benign

0.12

MetaSVM

Uncertain

0.60

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.4

REVEL

Uncertain

0.45

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.024

Vest4

0.38

MVP

0.86

ClinPred

0.24

GERP RS

5.1

gMVP

0.75

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