NM_003476.5:c.190C>T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PM2PP3_ModerateBS1_Supporting

The NM_003476.5(CSRP3):c.190C>T(p.Arg64Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000459 in 1,613,528 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000042 ( 1 hom. )

Consequence

CSRP3
NM_003476.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 5.58

Variant links:

Genes affected

CSRP3 (HGNC:2472): (cysteine and glycine rich protein 3) This gene encodes a member of the CSRP family of LIM domain proteins, which may be involved in regulatory processes important for development and cellular differentiation. The LIM/double zinc-finger motif found in this protein is found in a group of proteins with critical functions in gene regulation, cell growth, and somatic differentiation. Mutations in this gene are thought to cause heritable forms of hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM) in humans. Alternatively spliced transcript variants with different 5' UTR, but encoding the same protein, have been found for this gene. [provided by RefSeq, Jul 2008]

CSRP3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.908

BS1

Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.0000417 (61/1461290) while in subpopulation MID AF= 0.000755 (4/5300). AF 95% confidence interval is 0.000257. There are 1 homozygotes in gnomad4_exome. There are 30 alleles in male gnomad4_exome 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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CSRP3	NM_003476.5 link	c.190C>T	p.Arg64Cys	missense_variant	Exon 3 of 6	ENST00000265968.9	NP_003467.1	P50461-1A2TDB8
CSRP3	NM_001369404.1 link	c.113-1879C>T		intron_variant	Intron 2 of 4		NP_001356333.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CSRP3	ENST00000265968.9 link	c.190C>T	p.Arg64Cys	missense_variant	Exon 3 of 6	1	NM_003476.5	ENSP00000265968.3		P50461-1

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251244

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135786

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000417

AC:

AN:

1461290

Hom.:

Cov.:

AF XY:

0.0000413

AC XY:

AN XY:

726948

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000441

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74424

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000512

Hom.:

Bravo

AF:

0.0000529

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Dilated cardiomyopathy 1M;C2677491:Hypertrophic cardiomyopathy 12

Uncertain:2

Sep 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 64 of the CSRP3 protein (p.Arg64Cys). This variant is present in population databases (rs368392588, gnomAD 0.01%). This missense change has been observed in individuals with clinical features of CSRP3-related conditions (PMID: 16352453, 35352813; internal data). ClinVar contains an entry for this variant (Variation ID: 520355). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Aug 09, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Uncertain:2

Nov 02, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R64C variant (also known as c.190C>T), located in coding exon 2 of the CSRP3 gene, results from a C to T substitution at nucleotide position 190. The arginine at codon 64 is replaced by cysteine, an amino acid with highly dissimilar properties. This alteration has been reported in an individual with hypertrophic cardiomyopathy (Bos JM et al. Mol. Genet. Metab., 2006 May;88:78-85). This variant has also been seen in exome cohorts not selected for the presence of cardiovascular disease, but clinical details were limited (Andreasen C et al. Eur. J. Hum. Genet., 2013 Sep;21:918-28; Kars ME et al. Proc Natl Acad Sci U S A. 2021 09;118(36)). This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Apr 08, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PP3, BS1 -

Cardiomyopathy

Uncertain:1

Mar 05, 2019

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

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Jan 22, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Identified in patients with HCM and unexplained cardiac arrest (UCA) in the published literature (PMID: 30012424, 16352453, 35352813); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 23299917, 16352453, 34426522, Kui2024[article], 35241752, 30012424, 35352813) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.90

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.19

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.91

D;.;D;D

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

0.98

.;D;.;D

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.91

D;D;D;D

MetaSVM

Uncertain

0.69

MutationAssessor

Uncertain

2.5

M;.;M;M

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-5.7

D;.;.;D

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

D;.;.;D

Sift4G

Uncertain

0.043

D;.;.;D

Polyphen

1.0

D;.;D;D

Vest4

0.81

MVP

0.98

MPC

0.38

ClinPred

0.98

GERP RS

4.7

Varity_R

0.74

gMVP

0.56

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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