Variant chr12-6773909-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002286.6(LAG3):c.419G>A(p.Arg140Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000244 in 1,229,246 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000024 ( 0 hom. )

Consequence

LAG3
NM_002286.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.39

Variant links:

Genes affected

LAG3 (HGNC:6476): (lymphocyte activating 3) Lymphocyte-activation protein 3 belongs to Ig superfamily and contains 4 extracellular Ig-like domains. The LAG3 gene contains 8 exons. The sequence data, exon/intron organization, and chromosomal localization all indicate a close relationship of LAG3 to CD4. [provided by RefSeq, Jul 2008]

LAG3 links:

LAG3 (HGNC:):

LAG3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05596271).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LAG3	NM_002286.6 linkuse as main transcript	c.419G>A	p.Arg140Gln	missense_variant	3/8	ENST00000203629.3	NP_002277.4	P18627-1
LAG3	NM_001414176.1 linkuse as main transcript	c.419G>A	p.Arg140Gln	missense_variant	3/8		NP_001401105.1
LAG3	NM_001414177.1 linkuse as main transcript	c.419G>A	p.Arg140Gln	missense_variant	3/7		NP_001401106.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
LAG3	ENST00000203629.3 linkuse as main transcript	c.419G>A	p.Arg140Gln	missense_variant	3/8	1	NM_002286.6	ENSP00000203629.2	P18627-1
LAG3	ENST00000441671.6 linkuse as main transcript	c.419G>A	p.Arg140Gln	missense_variant	3/5	1		ENSP00000413825.2	P18627-2
LAG3	ENST00000538079.1 linkuse as main transcript	n.1041G>A		non_coding_transcript_exon_variant	2/6	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000244

AC:

AN:

1229246

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

598172

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:

0.00000298

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 27, 2024

The c.419G>A (p.R140Q) alteration is located in exon 3 (coding exon 3) of the LAG3 gene. This alteration results from a G to A substitution at nucleotide position 419, causing the arginine (R) at amino acid position 140 to be replaced by a glutamine (Q). 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

0.084

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.75

CADD

Benign

8.8

DANN

Uncertain

0.98

DEOGEN2

Benign

0.095

.;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.012

LIST_S2

Benign

0.68

T;T

M_CAP

Benign

0.032

MetaRNN

Benign

0.056

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.67

N;N

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.69

N;N

REVEL

Benign

0.010

Sift

Benign

0.35

T;T

Sift4G

Benign

0.33

T;T

Polyphen

0.010

.;B

Vest4

0.049

MutPred

0.40

Gain of catalytic residue at P138 (P = 0.0048);Gain of catalytic residue at P138 (P = 0.0048);

MVP

0.20

MPC

0.098

ClinPred

0.13

GERP RS

-1.6

Varity_R

0.039

gMVP

0.26

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