rs558440936

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_001134363.3(RBM20):​c.3666C>G​(p.Phe1222Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000023 in 1,306,480 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. F1222F) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 8.7e-7 ( 0 hom. )

Consequence

RBM20
NM_001134363.3 missense

Scores

4
12

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: -0.735

Publications

0 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.15503398).
BP6
Variant 10-110835960-C-G is Benign according to our data. Variant chr10-110835960-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 1733723.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RBM20NM_001134363.3 linkc.3666C>G p.Phe1222Leu missense_variant Exon 14 of 14 ENST00000369519.4 NP_001127835.2
RBM20XM_017016103.3 linkc.3501C>G p.Phe1167Leu missense_variant Exon 14 of 14 XP_016871592.1
RBM20XM_017016104.3 linkc.3282C>G p.Phe1094Leu missense_variant Exon 14 of 14 XP_016871593.1
RBM20XM_047425116.1 linkc.3282C>G p.Phe1094Leu missense_variant Exon 14 of 14 XP_047281072.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RBM20ENST00000369519.4 linkc.3666C>G p.Phe1222Leu missense_variant Exon 14 of 14 1 NM_001134363.3 ENSP00000358532.3
RBM20ENST00000718239.1 linkc.3666C>G p.Phe1222Leu missense_variant Exon 14 of 14 ENSP00000520684.1
RBM20ENST00000465774.2 linkn.607C>G non_coding_transcript_exon_variant Exon 2 of 2 4
RBM20ENST00000480343.2 linkn.299C>G non_coding_transcript_exon_variant Exon 3 of 3 4

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152226
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000482
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
GnomAD2 exomes
AF:
0.00000727
AC:
1
AN:
137466
AF XY:
0.0000137
show subpopulations
Gnomad AFR exome
AF:
0.000136
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS 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:
8.66e-7
AC:
1
AN:
1154254
Hom.:
0
Cov.:
15
AF XY:
0.00000173
AC XY:
1
AN XY:
578690
show subpopulations
African (AFR)
AF:
0.0000386
AC:
1
AN:
25902
American (AMR)
AF:
0.00
AC:
0
AN:
32554
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
23176
East Asian (EAS)
AF:
0.00
AC:
0
AN:
33918
South Asian (SAS)
AF:
0.00
AC:
0
AN:
72126
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
48912
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5204
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
862760
Other (OTH)
AF:
0.00
AC:
0
AN:
49702
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000131
AC:
2
AN:
152226
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74362
show subpopulations
African (AFR)
AF:
0.0000482
AC:
2
AN:
41452
American (AMR)
AF:
0.00
AC:
0
AN:
15290
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5196
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10622
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68046
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00
Hom.:
0
Bravo
AF:
0.00000756

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1
Dec 27, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function -

Cardiovascular phenotype Uncertain:1
Jun 26, 2020
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.F1222L variant (also known as c.3666C>G), located in coding exon 14 of the RBM20 gene, results from a C to G substitution at nucleotide position 3666. The phenylalanine at codon 1222 is replaced by leucine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species; however, leucine is the reference amino acid in other 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
Jul 25, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.56
BayesDel_addAF
Benign
-0.21
T
BayesDel_noAF
Benign
-0.29
CADD
Benign
0.029
DANN
Uncertain
0.98
Eigen
Benign
-0.88
Eigen_PC
Benign
-0.78
FATHMM_MKL
Benign
0.26
N
M_CAP
Uncertain
0.17
D
MetaRNN
Benign
0.16
T
MetaSVM
Benign
-0.45
T
PhyloP100
-0.73
PrimateAI
Uncertain
0.60
T
PROVEAN
Benign
-2.0
N
REVEL
Benign
0.13
Sift
Benign
0.073
T
Sift4G
Benign
0.18
T
Vest4
0.27
MutPred
0.21
Gain of catalytic residue at F1222 (P = 0.0169);
MVP
0.22
ClinPred
0.064
T
GERP RS
1.4
gMVP
0.20
Mutation Taster
=86/14
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

Publications

Other links and lift over

dbSNP: rs558440936; hg19: chr10-112595718; API