Genetic Variant LMNTD2:p.Gln166Arg (chr11-557942-T-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_173573.3(LMNTD2):c.497A>G(p.Gln166Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000813 in 1,598,112 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000083 ( 0 hom. )

Consequence

LMNTD2
NM_173573.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0680

Variant links:

Genes affected

LMNTD2 (HGNC:28561): (lamin tail domain containing 2) Predicted to be a structural constituent of chromatin. Predicted to be involved in regulation of chromatin assembly. Predicted to act upstream of or within positive regulation of mRNA splicing, via spliceosome. Predicted to be active in lamin filament. [provided by Alliance of Genome Resources, Apr 2022]

LMNTD2 links:

LMNTD2-AS1 (HGNC:41204): (LMNTD2 antisense RNA 1)

LMNTD2-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12800473).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LMNTD2	NM_173573.3 link	c.497A>G	p.Gln166Arg	missense_variant	Exon 5 of 14	ENST00000329451.8	NP_775844.2	Q8IXW0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LMNTD2	ENST00000329451.8 link	c.497A>G	p.Gln166Arg	missense_variant	Exon 5 of 14	1	NM_173573.3	ENSP00000331167.3	Q8IXW0
LMNTD2	ENST00000441853.5 link	c.518A>G	p.Gln173Arg	missense_variant	Exon 6 of 9	3		ENSP00000393529.1	C9JV74
LMNTD2	ENST00000486629.1 link	c.527A>G	p.Gln176Arg	missense_variant	Exon 5 of 7	5		ENSP00000435529.1	E9PJR3
LMNTD2-AS1	ENST00000527620.5 link	n.348T>C		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152258

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000830

AC:

AN:

1445854

Hom.:

Cov.:

AF XY:

0.00000836

AC XY:

AN XY:

717522

show subpopulations

Gnomad4 AFR exome

AF:

0.0000301

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:

0.00000997

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152258

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74388

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000347

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.497A>G (p.Q166R) alteration is located in exon 5 (coding exon 5) of the LMNTD2 gene. This alteration results from a A to G substitution at nucleotide position 497, causing the glutamine (Q) at amino acid position 166 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.049

T;T;.

Eigen

Benign

-0.33

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.50

T;T;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.13

T;T;T

MetaSVM

Benign

-1.0

PROVEAN

Benign

-1.5

N;N;N

REVEL

Benign

0.13

Sift

Uncertain

0.020

D;D;D

Sift4G

Benign

0.077

T;T;.

Polyphen

0.82

P;.;.

Vest4

0.13

MutPred

0.31

Gain of MoRF binding (P = 0.0295);.;.;

MVP

0.33

MPC

0.11

ClinPred

0.20

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.066

gMVP

0.041

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