11-65539087-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001130144.3(LTBP3):c.3905G>A(p.Arg1302His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000032 in 1,405,538 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

LTBP3
NM_001130144.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 0.824

Variant links:

Genes affected

LTBP3 (HGNC:6716): (latent transforming growth factor beta binding protein 3) The protein encoded by this gene forms a complex with transforming growth factor beta (TGF-beta) proteins and may be involved in their subcellular localization. Activation of this complex requires removal of the encoded binding protein. This protein also may play a structural role in the extracellular matrix. Three transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2010]

LTBP3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.18027374).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LTBP3	NM_001130144.3 link	c.3905G>A	p.Arg1302His	missense_variant	Exon 28 of 28	ENST00000301873.11	NP_001123616.1	Q9NS15-1Q8WYU6
LTBP3	NM_021070.4 link	c.3764G>A	p.Arg1255His	missense_variant	Exon 27 of 27		NP_066548.2	Q9NS15-2Q8WYU6
LTBP3	NM_001164266.1 link	c.3413G>A	p.Arg1138His	missense_variant	Exon 27 of 27		NP_001157738.1	Q9NS15B9EG76Q8WYU6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LTBP3	ENST00000301873.11 link	c.3905G>A	p.Arg1302His	missense_variant	Exon 28 of 28	2	NM_001130144.3	ENSP00000301873.5		Q9NS15-1

Frequencies

GnomAD3 genomes

AF:

0.0000724

AC:

AN:

151890

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000525

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:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000127

AC:

AN:

63044

Hom.:

AF XY:

0.000108

AC XY:

AN XY:

36992

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000874

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000371

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000271

AC:

AN:

1253648

Hom.:

Cov.:

AF XY:

0.0000278

AC XY:

AN XY:

612494

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000810

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000148

Gnomad4 OTH exome

AF:

0.0000986

GnomAD4 genome

AF:

0.0000724

AC:

AN:

151890

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74206

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000525

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000442

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000141

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.0000256

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Brachyolmia-amelogenesis imperfecta syndrome

Uncertain:1

Dec 03, 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 histidine, which is basic and polar, at codon 1302 of the LTBP3 protein (p.Arg1302His). This variant is present in population databases (rs775282370, gnomAD 0.09%). This variant has not been reported in the literature in individuals affected with LTBP3-related conditions. ClinVar contains an entry for this variant (Variation ID: 1973170). 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. -

Inborn genetic diseases

Uncertain:1

Nov 19, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R1302H variant (also known as c.3905G>A), located in coding exon 28 of the LTBP3 gene, results from a G to A substitution at nucleotide position 3905. The arginine at codon 1302 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is conserved. 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. -

not provided

Uncertain:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.15

.;T;.;.;.

Eigen

Uncertain

0.19

Eigen_PC

Benign

0.15

FATHMM_MKL

Benign

0.30

LIST_S2

Uncertain

0.92

D;D;D;D;D

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.18

T;T;T;T;T

MetaSVM

Uncertain

-0.072

MutationAssessor

Benign

1.2

.;L;.;.;.

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-1.4

N;N;N;N;N

REVEL

Uncertain

0.31

Sift

Uncertain

0.0050

D;D;D;D;T

Sift4G

Uncertain

0.021

D;D;T;D;T

Polyphen

1.0

D;D;.;.;D

Vest4

0.33

MutPred

0.34

.;Loss of MoRF binding (P = 0.02);.;.;.;

MVP

0.83

ClinPred

0.19

GERP RS

4.9

Varity_R

0.17

gMVP

0.36

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