rs199868951

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.448G>A(p.Ala150Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000475 in 1,551,758 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00053 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00047 ( 5 hom. )

Consequence

RBM20
NM_001134363.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:9

Conservation

PhyloP100: -0.316

Publications

2 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=0.004958421).

BP6

Variant 10-110781057-G-A is Benign according to our data. Variant chr10-110781057-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 44018.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000526 (80/152178) while in subpopulation AFR AF = 0.000121 (5/41450). AF 95% confidence interval is 0.0000476. There are 2 homozygotes in GnomAd4. There are 33 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 80 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RBM20	NM_001134363.3 link	c.448G>A	p.Ala150Thr	missense_variant	Exon 2 of 14	ENST00000369519.4	NP_001127835.2	Q5T481
RBM20	XM_017016103.3 link	c.283G>A	p.Ala95Thr	missense_variant	Exon 2 of 14		XP_016871592.1
RBM20	XM_017016104.3 link	c.64G>A	p.Ala22Thr	missense_variant	Exon 2 of 14		XP_016871593.1
RBM20	XM_047425116.1 link	c.64G>A	p.Ala22Thr	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.448G>A	p.Ala150Thr	missense_variant	Exon 2 of 14	1	NM_001134363.3	ENSP00000358532.3		Q5T481
RBM20	ENST00000718239.1 link	c.448G>A	p.Ala150Thr	missense_variant	Exon 2 of 14			ENSP00000520684.1

Frequencies

GnomAD3 genomes

AF:

0.000526

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.0190

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.00123

AC:

193

AN:

157176

AF XY:

0.00112

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000121

Gnomad ASJ exome

AF:

0.0187

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000344

Gnomad OTH exome

AF:

0.00226

GnomAD4 exome

AF:

0.000469

AC:

657

AN:

1399580

Hom.:

Cov.:

AF XY:

0.000453

AC XY:

313

AN XY:

690280

show subpopulations

African (AFR)

AF:

0.0000316

AC:

AN:

31598

American (AMR)

AF:

0.000168

AC:

AN:

35706

Ashkenazi Jewish (ASJ)

AF:

0.0186

AC:

468

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35738

South Asian (SAS)

AF:

0.0000252

AC:

AN:

79236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49364

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.0000936

AC:

101

AN:

1079008

Other (OTH)

AF:

0.00136

AC:

AN:

58050

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

108

163

217

271

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000526

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.000444

AC XY:

AN XY:

74340

show subpopulations

African (AFR)

AF:

0.000121

AC:

AN:

41450

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.0190

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68028

Other (OTH)

AF:

0.000956

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

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:

0.00180

Hom.:

Bravo

AF:

0.000514

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000723

AC:

ESP6500EA

AF:

0.000943

AC:

ExAC

AF:

0.00189

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:3

Sep 26, 2022

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

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: RBM20 c.448G>A (p.Ala150Thr) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0012 in 157176 control chromosomes in the gnomAD database, including one homozygote. The observed variant frequency is approximately 26 fold of the estimated maximal expected allele frequency for a pathogenic variant in RBM20 causing Dilated Cardiomyopathy phenotype (4.7e-05), strongly suggesting that the variant is benign. To our knowledge, no experimental evidence demonstrating its impact on protein function have been reported. Six ClinVar submitters (evaluation after 2014) cite the variant as uncertain significance (n=1) and benign (n=5). Based on the evidence outlined above, the variant was classified as benign. -

Dec 11, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Ala150Thr in exon 2 of RBM20: This variant is not expected to have clinical sign ificance due to a lack of conservation across species, including mammals. Of not e, 14 mammals have a Threonine (Thr; this variant) at this position despite high nearby amino acid conservation. In addition, computational analyses (AlignGVGD, PolyPhen2, SIFT) do not suggest a high likelihood of impact to the protein. In addition, this variant has been identified in 3/3182 European American chromosom es from a broad population by the NHLBI Exome Sequencing Project (http://evs.gs. washington.edu/EVS). -

Jan 16, 2018

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Jan 26, 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.Ala150Thr (c.448 G>A, A150T) in the RBM20 gene The variant has not been reported in association with disease. In silico analysis with PolyPhen-2 predicts the variant to be benign. The alanine at codon 150 is not conserved across species, and is in fact a threonine in some species, including mammals. Mutation taster predicts the variant to be benign. In total the variant has not been seen in 5 of ~2,579 published controls and individuals from publicly available population datasets. The variant is reported online in 3 of 1591 Caucasian individuals and 1 of 692 African-American individuals in the NHLBI Exome Sequencing Project dataset (as of January 27th, 2013). The phenotype of those individuals is not publicly available, however the cohorts that were merged to create this dataset were all either general population samples or samples recruited for common cardiovascular disease such as hypertension. The variant is listed in dbSNP (rs199868951), which refers to the NHLBI data and data from ClinSeq. In ClinSeq it was observed in 1 of 296 individuals; this cohort approximates a general population sample (with respect to Mendelian disease). It is listed in 1000 genomes but only in reference to the dbSNP entry (as of January 27th, 2013). -

Dilated cardiomyopathy 1DD

Uncertain:1Benign:1

Jan 13, 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. -

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiomyopathy

Benign:1

Apr 23, 2021

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

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

RBM20-related disorder

Benign:1

Nov 11, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

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

Familial dilated cardiomyopathy and peripheral neuropathy

Benign:1

Jun 03, 2019

Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Feb 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

RBM20: BP4, BS1 -

Cardiovascular phenotype

Benign:1

Oct 19, 2016

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as 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

0.063

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.52

CADD

Benign

0.079

(source)

DANN

Benign

0.48

Eigen

Benign

-1.6

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.091

M_CAP

Benign

0.051

MetaRNN

Benign

0.0050

MetaSVM

Benign

-0.62

PhyloP100

-0.32

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.72

REVEL

Benign

0.15

Sift

Benign

0.43

Sift4G

Benign

0.19

Vest4

0.092

MVP

0.088

ClinPred

0.018

GERP RS

-6.5

gMVP

0.20

Mutation Taster

=99/1

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