rs146265188

Positions:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_007078.3(LDB3):c.1460G>A(p.Arg487His) variant causes a missense change. The variant allele was found at a frequency of 0.000316 in 1,613,274 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0017 ( 1 hom., cov: 31)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

LDB3
NM_007078.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 5.31

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 Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009050608).

BP6

Variant 10-86716555-G-A is Benign according to our data. Variant chr10-86716555-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 45520.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr10-86716555-G-A is described in Lovd as [Benign]. Variant chr10-86716555-G-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00168 (255/151440) while in subpopulation AFR AF= 0.00559 (230/41180). AF 95% confidence interval is 0.00499. There are 1 homozygotes in gnomad4. There are 103 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High AC in GnomAd4 at 255 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LDB3	NM_007078.3 linkuse as main transcript	c.1460G>A	p.Arg487His	missense_variant	10/14	ENST00000361373.9	NP_009009.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LDB3	ENST00000361373.9 linkuse as main transcript	c.1460G>A	p.Arg487His	missense_variant	10/14	1	NM_007078.3	ENSP00000355296	P4	O75112-1

Frequencies

GnomAD3 genomes

AF:

0.00167

AC:

253

AN:

151324

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00555

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00138

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000209

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000518

AC:

129

AN:

249258

Hom.:

AF XY:

0.000437

AC XY:

AN XY:

134926

show subpopulations

Gnomad AFR exome

AF:

0.00585

Gnomad AMR exome

AF:

0.000607

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000358

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000174

AC:

254

AN:

1461834

Hom.:

Cov.:

AF XY:

0.000166

AC XY:

121

AN XY:

727218

show subpopulations

Gnomad4 AFR exome

AF:

0.00448

Gnomad4 AMR exome

AF:

0.000626

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.000530

GnomAD4 genome

AF:

0.00168

AC:

255

AN:

151440

Hom.:

Cov.:

AF XY:

0.00139

AC XY:

103

AN XY:

73956

show subpopulations

Gnomad4 AFR

AF:

0.00559

Gnomad4 AMR

AF:

0.00138

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000209

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000442

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000339

Hom.:

Bravo

AF:

0.00204

ESP6500AA

AF:

0.00454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000651

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Mar 01, 2016	p.Arg487His in exon 12 of LDB3: This variant is not expected to have clinical si gnificance because it has been identified in 0.6% (63/10364) of African chromoso mes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; d bSNP dbSNP rs146265188). -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 31, 2020	Variant summary: LDB3 c.1460G>A (p.Arg487His) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00052 in 249258 control chromosomes, predominantly at a frequency of 0.0058 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 200-fold of the estimated maximal expected allele frequency for a pathogenic variant in LDB3 causing Cardiomyopathy phenotype (2.5e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. c.1460G>A has been reported in the literature in in an African American individual affected with Dilated Cardiomyopathy (Pugh_2014) and in two infants, who suffered sudden death by an unknown cause (Methner_2016). These reports do not provide unequivocal conclusions about association of the variant with Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign (1x) / likely benign (3x). Based on the evidence outlined above, the variant was classified as benign. -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 08, 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. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jun 24, 2013	- -
Likely benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

Dilated cardiomyopathy 1C;C4721886:Myofibrillar myopathy 4

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 20, 2021

- -

Myofibrillar myopathy 4

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 07, 2024

- -

Primary dilated cardiomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego

Feb 07, 2018

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 17, 2018

This alteration is classified as likely 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

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.21

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.81

.;.;D;.

Eigen

Pathogenic

0.70

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.99

D;.;D;D

M_CAP

Benign

0.043

MetaRNN

Benign

0.0091

T;T;T;T

MetaSVM

Benign

-0.33

MutationAssessor

Uncertain

2.7

.;.;M;.

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-2.1

N;.;N;N

REVEL

Benign

0.19

Sift

Uncertain

0.0030

D;.;D;D

Sift4G

Uncertain

0.046

D;D;D;D

Polyphen

0.80, 1.0

.;.;P;D

Vest4

0.49

MVP

0.84

MPC

0.85

ClinPred

0.026

GERP RS

5.2

Varity_R

0.20

gMVP

0.42

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

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