10-110821355-C-A

Variant names:

• chr10-110821355-C-A
• rs368136394
• NM_001134363.3:c.2736C>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1 PM2

The NM_001134363.3(RBM20):​c.2736C>A​(p.Asp912Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. D912D) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RBM20 NM_001134363.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 0.179
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 27 uncertain in NM_001134363.3
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RBM20	NM_001134363.3	c.2736C>A	p.Asp912Glu	missense_variant	Exon 11 of 14	ENST00000369519.4	NP_001127835.2
RBM20	XM_017016103.3	c.2571C>A	p.Asp857Glu	missense_variant	Exon 11 of 14		XP_016871592.1
RBM20	XM_017016104.3	c.2352C>A	p.Asp784Glu	missense_variant	Exon 11 of 14		XP_016871593.1
RBM20	XM_047425116.1	c.2352C>A	p.Asp784Glu	missense_variant	Exon 11 of 14		XP_047281072.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RBM20	ENST00000369519.4	c.2736C>A	p.Asp912Glu	missense_variant	Exon 11 of 14	1	NM_001134363.3	ENSP00000358532.3
RBM20	ENST00000718239.1	c.2736C>A	p.Asp912Glu	missense_variant	Exon 11 of 14			ENSP00000520684.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

RBM20-related disorder Uncertain:1

Apr 04, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The RBM20 c.2736C>A variant is predicted to result in the amino acid substitution p.Asp912Glu. This variant was reported in a cohort of individuals with RBM20 variants; however, detailed clinical information was not available (Table S1, Parikh et al. 2019. PubMed ID: 30871351). This variant has not been reported in a large population database, indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided Uncertain:1

Apr 21, 2018

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

A variant of uncertain significance has been identified in the RBM20 gene. The D912E variant has not been published as pathogenic or been reported as benign to our knowledge. This variant is not observed in large population cohorts (Lek et al., 2016). Nevertheless, the D912E variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. Moreover, in-silico analyses, including protein predictors and evolutionary conservation, support that this variant does not alter protein structure/function. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Benign	19
DANN	Uncertain	1.0
Eigen	Benign	0.17
Eigen_PC	Benign	0.065
FATHMM_MKL	Uncertain	0.82	D
M_CAP	Uncertain	0.29	D
MetaRNN	Uncertain	0.67	D
MetaSVM	Uncertain	-0.15	T
PhyloP100		0.18
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-2.1	N
REVEL	Uncertain	0.45
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.10	T
Vest4		0.72
MutPred		0.34		Loss of solvent accessibility (P = 0.0052);
MVP		0.34
ClinPred		0.98	D
GERP RS		-2.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.21
Mutation Taster		=71/29	polymorphism

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

Other links and lift over

dbSNP: rs368136394; hg19: chr10-112581113;