NM_001134363.3:c.2547T>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_001134363.3(RBM20):c.2547T>A(p.Asn849Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000283 in 1,448,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/18 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 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

RBM20
NM_001134363.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 0.404

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 -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06480649).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000177 (27/152142) while in subpopulation AFR AF= 0.000651 (27/41498). AF 95% confidence interval is 0.000459. There are 0 homozygotes in gnomad4. There are 11 alleles in male gnomad4 subpopulation. Median coverage is 32. 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 27 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RBM20	NM_001134363.3 link	c.2547T>A	p.Asn849Lys	missense_variant	Exon 9 of 14	ENST00000369519.4	NP_001127835.2	Q5T481
RBM20	XM_017016103.3 link	c.2382T>A	p.Asn794Lys	missense_variant	Exon 9 of 14		XP_016871592.1
RBM20	XM_017016104.3 link	c.2163T>A	p.Asn721Lys	missense_variant	Exon 9 of 14		XP_016871593.1
RBM20	XM_047425116.1 link	c.2163T>A	p.Asn721Lys	missense_variant	Exon 9 of 14		XP_047281072.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RBM20	ENST00000369519.4 link	c.2547T>A	p.Asn849Lys	missense_variant	Exon 9 of 14	1	NM_001134363.3	ENSP00000358532.3		Q5T481

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152024

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000628

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:

0.0000497

AC:

AN:

80464

Hom.:

AF XY:

0.0000255

AC XY:

AN XY:

39278

show subpopulations

Gnomad AFR exome

AF:

0.000438

Gnomad AMR exome

AF:

0.0000960

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:

0.00

GnomAD4 exome

AF:

0.0000108

AC:

AN:

1295998

Hom.:

Cov.:

AF XY:

0.00000957

AC XY:

AN XY:

627182

show subpopulations

Gnomad4 AFR exome

AF:

0.000425

Gnomad4 AMR exome

AF:

0.0000516

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:

0.0000187

GnomAD4 genome

AF:

0.000177

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.000651

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:

0.000214

Hom.:

Bravo

AF:

0.000196

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 07, 2022

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

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: RBM20 c.2547T>A (p.Asn849Lys) 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 5e-05 in 80464 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.2547T>A has been reported in at-least one individual from the Percutaneous Stem Cell Injection Delivery Effects On Neomyogenesisin Dilated Cardiomyopathy trial (POSEIDON-DCM; NCT01392625) and authors classified the variant as VUS (Rieger_2019). This report does not provide unequivocal conclusions about association of the variant with Dilated Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014and classified the variant as likely benign, and as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

not provided

Uncertain:1

Feb 11, 2025

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis indicates that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 31648988) -

Cardiovascular phenotype

Uncertain:1

Oct 08, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.N849K variant (also known as c.2547T>A), located in coding exon 9 of the RBM20 gene, results from a T to A substitution at nucleotide position 2547. The asparagine at codon 849 is replaced by lysine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. 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. -

Dilated cardiomyopathy 1DD

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

0.99

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.080

FATHMM_MKL

Benign

0.75

M_CAP

Benign

0.039

MetaRNN

Benign

0.065

MetaSVM

Benign

-0.74

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.1

REVEL

Benign

0.088

Sift

Uncertain

0.0020

Sift4G

Benign

0.39

Vest4

0.26

MutPred

0.25

Gain of ubiquitination at N849 (P = 0.0045);

MVP

0.47

ClinPred

0.084

GERP RS

1.6

gMVP

0.052

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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