Genetic Variant LYG2:p.Gly115Ser (chr2-99245300-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_175735.4(LYG2):c.343G>A(p.Gly115Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000994 in 1,608,930 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

LYG2
NM_175735.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.80

Variant links:

Genes affected

LYG2 (HGNC:29615): (lysozyme g2) The protein encoded by this gene contains a SLT domain, a protein domain present in bacterial lytic transglycosylase (SLT) and in eukaryotic lysozymes (GEWL). SLT domain catalyzes the cleavage of the beta-1,4-glycosidic bond between N-acetylmuramic acid (MurNAc) and N-acetyglucosamine (GlcNAc). [provided by RefSeq, Jul 2008]

LYG2 links:

ENSG00000241962 (HGNC:):

ENSG00000241962 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LYG2	NM_175735.4 link	c.343G>A	p.Gly115Ser	missense_variant	Exon 5 of 7	ENST00000333017.7	NP_783862.2	Q86SG7-1
LYG2	XM_017003751.3 link	c.343G>A	p.Gly115Ser	missense_variant	Exon 5 of 7		XP_016859240.1	Q86SG7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LYG2	ENST00000333017.7 link	c.343G>A	p.Gly115Ser	missense_variant	Exon 5 of 7	5	NM_175735.4	ENSP00000327533.2		Q86SG7-1
ENSG00000241962	ENST00000424491.5 link	n.*292+29186C>T		intron_variant	Intron 11 of 13	2		ENSP00000390891.1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151950

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

GnomAD3 exomes

AF:

0.0000121

AC:

AN:

247528

Hom.:

AF XY:

0.00000747

AC XY:

AN XY:

133796

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000602

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000553

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1456980

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

724654

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000679

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000901

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151950

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74220

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

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.343G>A (p.G115S) alteration is located in exon 4 (coding exon 3) of the LYG2 gene. This alteration results from a G to A substitution at nucleotide position 343, causing the glycine (G) at amino acid position 115 to be replaced by a serine (S). 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

Uncertain

0.45

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

T;T;.;.;.;T

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.73

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.84

.;T;.;T;T;T

M_CAP

Benign

0.044

MetaRNN

Uncertain

0.65

D;D;D;D;D;D

MetaSVM

Uncertain

0.22

MutationAssessor

Pathogenic

3.4

M;M;M;M;.;.

PrimateAI

Benign

0.37

PROVEAN

Pathogenic

-5.0

D;D;D;.;D;D

REVEL

Uncertain

0.44

Sift

Benign

0.041

D;D;D;.;D;D

Sift4G

Uncertain

0.016

D;D;D;D;D;.

Polyphen

1.0

D;D;.;.;D;.

Vest4

0.76

MutPred

0.43

Gain of solvent accessibility (P = 0.1014);Gain of solvent accessibility (P = 0.1014);Gain of solvent accessibility (P = 0.1014);Gain of solvent accessibility (P = 0.1014);Gain of solvent accessibility (P = 0.1014);Gain of solvent accessibility (P = 0.1014);

MVP

0.51

MPC

0.79

ClinPred

0.97

GERP RS

5.8

Varity_R

0.37

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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