Genetic Variant NM_014319.5:c.37T>G (chr12-65169633-T-G) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_014319.5(LEMD3):c.37T>G(p.Ser13Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000101 in 1,589,546 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 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000090 ( 0 hom. )

Consequence

LEMD3
NM_014319.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.42

Variant links:

Genes affected

LEMD3 (HGNC:28887): (LEM domain containing 3) This locus encodes a LEM domain-containing protein. The encoded protein functions to antagonize transforming growth factor-beta signaling at the inner nuclear membrane. Two transcript variants encoding different isoforms have been found for this gene. Mutations in this gene have been associated with osteopoikilosis, Buschke-Ollendorff syndrome and melorheostosis.[provided by RefSeq, Nov 2009]

LEMD3 links:

ENSG00000289319 (HGNC:):

ENSG00000289319 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.30469447).

BS2

High AC in GnomAdExome4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LEMD3	NM_014319.5 link	c.37T>G	p.Ser13Ala	missense_variant	Exon 1 of 13	ENST00000308330.3	NP_055134.2	Q9Y2U8A0A024RBB9
LEMD3	NM_001167614.2 link	c.37T>G	p.Ser13Ala	missense_variant	Exon 1 of 13		NP_001161086.1	Q9Y2U8
LOC124902953	XR_007063349.1 link	n.-217A>C		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LEMD3	ENST00000308330.3 link	c.37T>G	p.Ser13Ala	missense_variant	Exon 1 of 13	1	NM_014319.5	ENSP00000308369.2	Q9Y2U8
LEMD3	ENST00000541171.1 link	n.51T>G		non_coding_transcript_exon_variant	Exon 1 of 2	2
ENSG00000289319	ENST00000685904.1 link	n.-171A>C		upstream_gene_variant

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152052

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000904

AC:

AN:

1437494

Hom.:

Cov.:

AF XY:

0.00000982

AC XY:

AN XY:

712962

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000118

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152052

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74276

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Oct 08, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with alanine, which is neutral and non-polar, at codon 13 of the LEMD3 protein (p.Ser13Ala). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with LEMD3-related conditions. Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt LEMD3 protein function with a negative predictive value of 80%. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.039

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.23

Eigen

Benign

-0.28

Eigen_PC

Benign

-0.18

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.69

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.30

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.4

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-0.74

REVEL

Benign

0.14

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.044

Polyphen

0.0

Vest4

0.37

MVP

0.65

ClinPred

0.95

GERP RS

1.5

Varity_R

0.35

gMVP

0.44

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