11-19186318-G-C

Position:

• chr11-19186318-G-C

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BA1

The NM_003476.5(CSRP3):​c.312C>G​(p.Thr104=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00302 in 1,614,196 control chromosomes in the GnomAD database, including 123 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.016 (64 hom., cov: 32)
  • Exomes 𝑓: 0.0017 (59 hom.)
• Consequence: CSRP3 NM_003476.5 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:14
• Conservation: PhyloP100: 1.54

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]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0029513538).
• BP6: Variant 11-19186318-G-C is Benign according to our data. Variant chr11-19186318-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 44695.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-19186318-G-C is described in Lovd as [Benign]. Variant chr11-19186318-G-C is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=1.54 with no splicing effect.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0528 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CSRP3	NM_003476.5	c.312C>G	p.Thr104=	synonymous_variant	4/6	ENST00000265968.9
CSRP3	NM_001369404.1	c.143C>G	p.Pro48Arg	missense_variant	3/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CSRP3	ENST00000265968.9	c.312C>G	p.Thr104=	synonymous_variant	4/6	1	NM_003476.5	P1

Frequencies

GnomAD3 genomes AF: 0.0158 AC: 2404 AN: 152190 Hom.: 64 Cov.: 32

Gnomad AFR AF: 0.0548

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00563

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000250

Gnomad OTH AF: 0.0139

GnomAD3 exomes AF: 0.00374 AC: 939 AN: 251366 Hom.: 20 AF XY: 0.00253 AC XY: 344 AN XY: 135848

Gnomad AFR exome AF: 0.0517

Gnomad AMR exome AF: 0.00199

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000150

Gnomad OTH exome AF: 0.00196

GnomAD4 exome AF: 0.00169 AC: 2470 AN: 1461888 Hom.: 59 Cov.: 32 AF XY: 0.00143 AC XY: 1040 AN XY: 727248

Gnomad4 AFR exome AF: 0.0571

Gnomad4 AMR exome AF: 0.00264

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000165

Gnomad4 OTH exome AF: 0.00374

GnomAD4 genome AF: 0.0158 AC: 2406 AN: 152308 Hom.: 64 Cov.: 32 AF XY: 0.0151 AC XY: 1123 AN XY: 74472

Gnomad4 AFR AF: 0.0547

Gnomad4 AMR AF: 0.00562

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000250

Gnomad4 OTH AF: 0.0137

Alfa AF: 0.00530 Hom.: 7

Bravo AF: 0.0178

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.000778 AC: 3

ESP6500AA AF: 0.0584 AC: 257

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00474 AC: 575

Asia WGS AF: 0.00346 AC: 12 AN: 3478

EpiCase AF: 0.000273

EpiControl AF: 0.000178

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:14

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:4

Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Sep 09, 2009	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Apr 26, 2013	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. -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

not provided Benign:4

Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jun 26, 2017	Variant summary: The CSRP3 c.312C>G (p.Thr104Thr) variant involves the alteration of a non-conserved nucleotide, resulting in a synonymous change. One in silico tool predicts a damaging outcome for this variant. 4/5 splice prediction tools predict no significant impact on normal splicing. ESE finder predicts that this variant may affect ESE sites. However, these predictions have yet to be confirmed by functional studies. This variant was found in 575/121406 control chromosomes (13 homozygotes), predominantly observed in the African subpopulation at a frequency of 0.051989 (541/10406). This frequency is about 2080 times the estimated maximal expected allele frequency of a pathogenic CSRP3 variant (0.000025), suggesting this is likely a benign polymorphism found primarily in the populations of African origin. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as benign. The variant of interest has not, to our knowledge, been reported in affected individuals via publications; nor evaluated for functional impact by in vivo/vitro studies. Taken together, this variant is classified as benign. -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 28, 2023	- -
Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -

Dilated cardiomyopathy 1M;C2677491:Hypertrophic cardiomyopathy 12 Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Sep 20, 2021	- -

CSRP3-related disorder Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 12, 2019

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). -

Hypertrophic cardiomyopathy 12 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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 and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Cardiomyopathy Benign:1

Benign, criteria provided, single submitter

clinical testing

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

Dec 03, 2015

- -

Cardiovascular phenotype Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 26, 2015

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
BayesDel_noAF	Benign	-0.46
CADD	Benign	6.0
DANN	Benign	0.60
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.20	T
MetaRNN	Benign	0.0030	T
MutationTaster	Benign	1.0	D;D
GERP RS		2.9

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

LitVar

Other links and lift over

dbSNP: rs45582433; hg19: chr11-19207865;