Variant 2-99244001-T-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_175735.4(LYG2):c.518A>C(p.Lys173Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000886 in 1,613,978 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000094 ( 0 hom. )

Consequence

LYG2
NM_175735.4 missense, splice_region

Scores

Splicing: ADA: 0.00003096

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.15

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:

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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/exons	MANE	Protein	UniProt
LYG2	NM_175735.4 linkuse as main transcript	c.518A>C	p.Lys173Thr	missense_variant, splice_region_variant	6/7	ENST00000333017.7	NP_783862.2
LYG2	XM_017003751.3 linkuse as main transcript	c.518A>C	p.Lys173Thr	missense_variant, splice_region_variant	6/7		XP_016859240.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LYG2	ENST00000333017.7 linkuse as main transcript	c.518A>C	p.Lys173Thr	missense_variant, splice_region_variant	6/7	5	NM_175735.4	ENSP00000327533	P1	Q86SG7-1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152134

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251272

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135806

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000944

AC:

138

AN:

1461844

Hom.:

Cov.:

AF XY:

0.0000935

AC XY:

AN XY:

727228

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.000114

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74336

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:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000579

Hom.:

Bravo

AF:

0.0000302

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

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

Jul 10, 2023

The c.518A>C (p.K173T) alteration is located in exon 5 (coding exon 4) of the LYG2 gene. This alteration results from a A to C substitution at nucleotide position 518, causing the lysine (K) at amino acid position 173 to be replaced by a threonine (T). 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

0.30

BayesDel_addAF

Benign

0.010

BayesDel_noAF

Uncertain

-0.040

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.35

T;T;.;.;.

Eigen

Benign

0.020

Eigen_PC

Benign

-0.082

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.81

.;T;.;T;T

M_CAP

Benign

0.042

MetaRNN

Uncertain

0.54

D;D;D;D;D

MetaSVM

Uncertain

-0.056

MutationAssessor

Pathogenic

3.2

M;M;M;M;.

MutationTaster

Benign

0.55

N;N;N

PrimateAI

Benign

0.34

PROVEAN

Pathogenic

-5.0

D;D;D;.;D

REVEL

Uncertain

0.38

Sift

Uncertain

0.0030

D;D;D;.;D

Sift4G

Uncertain

0.0020

D;D;D;D;D

Polyphen

1.0

D;D;.;.;D

Vest4

0.49

MVP

0.39

MPC

0.74

ClinPred

0.67

GERP RS

4.4

Varity_R

0.47

gMVP

0.68

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000031

dbscSNV1_RF

Benign

0.086

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