10-110781289-G-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001134363.3(RBM20):c.680G>T(p.Gly227Val) variant causes a missense change. The variant allele was found at a frequency of 0.000662 in 1,551,716 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G227E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00075 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00065 ( 2 hom. )

Consequence

RBM20
NM_001134363.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:11

Conservation

PhyloP100: 4.68

Publications

9 publications found

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 Gene-Disease associations (from GenCC):

dilated cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
dilated cardiomyopathy 1DD
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hypertrophic cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

RBM20 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0089737475).

BP6

Variant 10-110781289-G-T is Benign according to our data. Variant chr10-110781289-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 178111.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000755 (115/152368) while in subpopulation SAS AF = 0.0029 (14/4828). AF 95% confidence interval is 0.00175. There are 0 homozygotes in GnomAd4. There are 63 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 115 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
RBM20	NM_001134363.3 link	c.680G>T	p.Gly227Val	missense_variant	Exon 2 of 14	ENST00000369519.4	NP_001127835.2
RBM20	XM_017016103.3 link	c.515G>T	p.Gly172Val	missense_variant	Exon 2 of 14		XP_016871592.1
RBM20	XM_017016104.3 link	c.296G>T	p.Gly99Val	missense_variant	Exon 2 of 14		XP_016871593.1
RBM20	XM_047425116.1 link	c.296G>T	p.Gly99Val	missense_variant	Exon 2 of 14		XP_047281072.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RBM20	ENST00000369519.4 link	c.680G>T	p.Gly227Val	missense_variant	Exon 2 of 14	1	NM_001134363.3	ENSP00000358532.3
RBM20	ENST00000718239.1 link	c.680G>T	p.Gly227Val	missense_variant	Exon 2 of 14			ENSP00000520684.1

Frequencies

GnomAD3 genomes

AF:

0.000749

AC:

114

AN:

152250

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00157

Gnomad ASJ

AF:

0.0112

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00269

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000367

Gnomad OTH

AF:

0.00239

GnomAD2 exomes

AF:

0.00142

AC:

218

AN:

153808

AF XY:

0.00160

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00113

Gnomad ASJ exome

AF:

0.0107

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000774

Gnomad OTH exome

AF:

0.00162

GnomAD4 exome

AF:

0.000652

AC:

912

AN:

1399348

Hom.:

Cov.:

AF XY:

0.000748

AC XY:

516

AN XY:

690188

show subpopulations

African (AFR)

AF:

0.000348

AC:

AN:

31598

American (AMR)

AF:

0.00104

AC:

AN:

35704

Ashkenazi Jewish (ASJ)

AF:

0.00997

AC:

251

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35738

South Asian (SAS)

AF:

0.00159

AC:

126

AN:

79236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49226

Middle Eastern (MID)

AF:

0.00544

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.000341

AC:

368

AN:

1078966

Other (OTH)

AF:

0.00152

AC:

AN:

58000

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

138

206

275

344

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000755

AC:

115

AN:

152368

Hom.:

Cov.:

AF XY:

0.000846

AC XY:

AN XY:

74504

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41592

American (AMR)

AF:

0.00157

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.0112

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00290

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.0000941

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000367

AC:

AN:

68030

Other (OTH)

AF:

0.00237

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000976

Hom.:

Bravo

AF:

0.000706

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00157

AC:

ExAC

AF:

0.00172

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:11

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:2Benign:3

Jul 16, 2014

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant classified as Uncertain Significance - Favor Benign. The Gly227Val varia nt in RBM20 has been identified by our laboratory in one Caucasian child with HC M. This variant has also been identified in 0.2% (5/3182) of European American c hromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington.edu; dbSNP rs202238753). Glycine (Gly) at position 227 is not well conserved in evolu tion and one mammal (panda) carries a valine (Val) at this position, raising the possibility that this change may be tolerated. In summary, while the clinical significance of the Gly227Val variant is uncertain, these data suggest that it i s more likely to be benign.

Apr 09, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Nov 13, 2013

Stanford Center for Inherited Cardiovascular Disease, Stanford University

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Note this variant was found in clinical genetic testing performed by one or more labs who may also submit to ClinVar. Thus any internal case data may overlap with the internal case data of other labs. The interpretation reviewed below is that of the Stanford Center for Inherited Cardiovascular Disease. p.Gly227Val (G227V; c.680 G>T) in the RBM20 gene. This variant has not previously been reported in individuals with DCM. The RBM20 gene is a minor cause of DCM, with mutations reported in approximately 3% of patients. This is a conservative amino acid change, resulting in the replacement of a nonpolar glycine with a nonpolar valine. Glycine at this location is 100% conserved across 8 mammalian species. The adjacent residues are not highly conserved. In silico analysis with PolyPhen-2 (http://genetics.bwh.harvard.edu/pph2/) predicts the variant to be “probably damaging” with a score of 0.976. Nonetheless, no mutations affecting nearby residues have been reported in HGMD according to GeneDx, indiacting that this region of the protein may be tolerant of change. Furthermore, the G227V variant has been seen in at least 5 individuals from >2200 individuals in publicly available population datasets. G227V is present in 5/1591 Caucasian and 0/692 African American individuals in the NHLBI Exome Sequencing Project dataset (http://evs.gs.washington.edu/EVS/). It is also listed in dbSNP (http://www.ncbi.nlm.nih.gov/projects/SNP). There is no variation at this codon in 1000 Genomes.

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Feb 25, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not provided

Benign:4

Jun 24, 2020

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 28255936, 30611920, 25351510)

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Jun 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

RBM20: BS1, BS2

Dilated cardiomyopathy 1DD

Uncertain:1Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.

Cardiomyopathy

Benign:1

Sep 16, 2019

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

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Primary dilated cardiomyopathy

Benign:1

Oct 01, 2016

CSER _CC_NCGL, University of Washington

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:research

Found in patient having exome sequencing for an unrelated indication. No known history of dilated cardiomyopathy. This interpretation considers GERP score and allele frequency data, in addition to published reports of the variant in the literature, available at the time of review.

Cardiovascular phenotype

Benign:1

May 08, 2018

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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.

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Uncertain

-0.030

CADD

Uncertain

(source)

DANN

Uncertain

1.0

Eigen

Benign

0.15

Eigen_PC

Benign

0.13

FATHMM_MKL

Benign

0.64

M_CAP

Uncertain

0.26

MetaRNN

Benign

0.0090

MetaSVM

Uncertain

0.58

PhyloP100

4.7

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-3.6

REVEL

Uncertain

0.44

Sift

Uncertain

0.027

Sift4G

Uncertain

0.011

Vest4

0.38

ClinPred

0.11

GERP RS

4.7

gMVP

0.66

Mutation Taster

=77/23

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over