10-86691921-G-A

Position:

chr10-86691921-G-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_007078.3(LDB3):c.715G>A(p.Val239Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000917 in 1,614,132 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V239A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000092 ( 0 hom. )

Consequence

LDB3
NM_007078.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.58

Variant links:

Genes affected

LDB3 (HGNC:15710): (LIM domain binding 3) This gene encodes a PDZ domain-containing protein. PDZ motifs are modular protein-protein interaction domains consisting of 80-120 amino acid residues. PDZ domain-containing proteins interact with each other in cytoskeletal assembly or with other proteins involved in targeting and clustering of membrane proteins. The protein encoded by this gene interacts with alpha-actinin-2 through its N-terminal PDZ domain and with protein kinase C via its C-terminal LIM domains. The LIM domain is a cysteine-rich motif defined by 50-60 amino acids containing two zinc-binding modules. This protein also interacts with all three members of the myozenin family. Mutations in this gene have been associated with myofibrillar myopathy and dilated cardiomyopathy. Alternatively spliced transcript variants encoding different isoforms have been identified; all isoforms have N-terminal PDZ domains while only longer isoforms (1, 2 and 5) have C-terminal LIM domains. [provided by RefSeq, Jan 2010]

LDB3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.25044897).

BS2

High AC in GnomAd4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LDB3	NM_007078.3 linkuse as main transcript	c.715G>A	p.Val239Ile	missense_variant	6/14	ENST00000361373.9
LDB3	NM_001368067.1 linkuse as main transcript	c.574G>A	p.Val192Ile	missense_variant	7/9	ENST00000263066.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LDB3	ENST00000361373.9 linkuse as main transcript	c.715G>A	p.Val239Ile	missense_variant	6/14	1	NM_007078.3	P4	O75112-1
LDB3	ENST00000263066.11 linkuse as main transcript	c.574G>A	p.Val192Ile	missense_variant	7/9	1	NM_001368067.1		O75112-6

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000135

AC:

AN:

251428

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135894

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000217

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000370

Gnomad NFE exome

AF:

0.000150

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000917

AC:

134

AN:

1461842

Hom.:

Cov.:

AF XY:

0.000100

AC XY:

AN XY:

727220

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000252

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.000375

Gnomad4 NFE exome

AF:

0.0000809

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000919

AC:

AN:

152290

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000106

Hom.:

Bravo

AF:

0.0000680

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000181

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1Other:1

Uncertain significance, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jun 24, 2013	- -
not provided, no classification provided	phenotyping only	GenomeConnect, ClinGen	-	Variant interpretted as Uncertain significance and reported on 01-06-2017 by Lab or GTR ID 26957. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 01, 2020	This variant is associated with the following publications: (PMID: 23861362) -

Myofibrillar myopathy 4

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 25, 2024

This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 192 of the LDB3 protein (p.Val192Ile). This variant is present in population databases (rs201417512, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with LDB3-related conditions. ClinVar contains an entry for this variant (Variation ID: 191697). 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 tolerated. 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. -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 29, 2023

The p.V239I variant (also known as c.715G>A), located in coding exon 5 of the LDB3 gene, results from a G to A substitution at nucleotide position 715. The valine at codon 239 is replaced by isoleucine, an amino acid with highly similar properties. This alteration (described as NM_001080116.1:c.574G>A p.V192I) has been reported as a secondary cardiac variant in an exome cohort (Ng D et al. Circ Cardiovasc Genet, 2013 Aug;6:337-46). This variant has also been reported in a sudden death case (described as NM_001171610 c.919G>A p.V307I) and a hypertrophic cardiomyopathy (HCM) case; however, both individuals had co-occurring variants and limited clinical details (Hertz CL et al. Int J Legal Med, 2016 Jan;130:91-102; van Lint FHM et al. Neth Heart J, 2019 Jun;27:304-309). This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.053

BayesDel_noAF

Uncertain

-0.020

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.22

.;.;.;T;.;.;.

Eigen

Uncertain

0.26

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.92

D;.;D;D;D;D;D

M_CAP

Benign

0.028

MetaRNN

Benign

0.25

T;T;T;T;T;T;T

MetaSVM

Uncertain

0.13

MutationAssessor

Uncertain

2.2

.;.;.;M;M;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;D;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.46

N;.;N;N;.;N;N

REVEL

Uncertain

0.37

Sift

Benign

0.12

T;.;T;T;.;T;T

Sift4G

Benign

0.062

T;T;T;T;T;T;T

Polyphen

0.16, 0.96, 0.85, 1.0, 0.72

.;.;B;D;P;D;P

Vest4

0.38

MVP

0.88

MPC

0.28

ClinPred

0.074

GERP RS

5.8

Varity_R

0.19

gMVP

0.33

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

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