Variant 3-72955215-A-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_001080393.2(GXYLT2):c.718A>G(p.Met240Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,706 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

GXYLT2
NM_001080393.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.37

Variant links:

Genes affected

GXYLT2 (HGNC:33383): (glucoside xylosyltransferase 2) The protein encoded by this gene is a xylosyltransferase that elongates O-linked glucose bound to epidermal growth factor (EGF) repeats. The encoded protein catalyzes the addition of xylose to the O-glucose-modified residues of EGF repeats of Notch proteins. [provided by RefSeq, Sep 2016]

GXYLT2 links:

GXYLT2 (HGNC:):

GXYLT2 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
GXYLT2	NM_001080393.2 linkuse as main transcript	c.718A>G	p.Met240Val	missense_variant	4/7	ENST00000389617.9	NP_001073862.1	A0PJZ3
GXYLT2	NR_138564.2 linkuse as main transcript	n.906A>G		non_coding_transcript_exon_variant	4/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
GXYLT2	ENST00000389617.9 linkuse as main transcript	c.718A>G	p.Met240Val	missense_variant	4/7	5	NM_001080393.2	ENSP00000374268.4	A0PJZ3
GXYLT2	ENST00000491839.1 linkuse as main transcript	c.1A>G	p.Met1?	start_lost	1/4	3		ENSP00000420426.1	C9JND4
GXYLT2	ENST00000498315.1 linkuse as main transcript	c.*34A>G		downstream_gene_variant		2		ENSP00000417239.1	C9J3Q6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249130

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135158

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461706

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727134

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

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

Aug 11, 2022

The c.718A>G (p.M240V) alteration is located in exon 4 (coding exon 4) of the GXYLT2 gene. This alteration results from a A to G substitution at nucleotide position 718, causing the methionine (M) at amino acid position 240 to be replaced by a valine (V). 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

0.24

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

DANN

Uncertain

0.97

DEOGEN2

Benign

0.33

T;.

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.0061

MetaRNN

Uncertain

0.45

T;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

L;.

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-3.1

D;D

REVEL

Benign

0.16

Sift

Benign

0.082

T;T

Sift4G

Benign

0.10

T;T

Polyphen

0.59

P;.

Vest4

0.68

MutPred

0.66

Loss of sheet (P = 0.0817);.;

MVP

0.47

MPC

0.65

ClinPred

0.88

GERP RS

5.3

Varity_R

0.42

gMVP

0.86

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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