X-48904799-T-A

Position:

• chrX-48904799-T-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Moderate BP6_Moderate

The ENST00000445167.7(SLC35A2):​c.520A>T​(p.Thr174Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 11/13 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T174A) has been classified as Benign.

• Frequency: Genomes: not found (cov: 24)
• Consequence: SLC35A2 ENST00000445167.7 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.405

Genes affected

SLC35A2 (HGNC:11022): (solute carrier family 35 member A2) This gene encodes a member of the nucleotide-sugar transporter family. The encoded protein is a multi-pass membrane protein. It transports UDP-galactose from the cytosol into Golgi vesicles, where it serves as a glycosyl donor for the generation of glycans. Mutations in this gene cause congenital disorder of glycosylation type IIm (CDG2M). Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Oct 2014]

ACMG classification

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=0.105763674).
• BP6: Variant X-48904799-T-A is Benign according to our data. Variant chrX-48904799-T-A is described in ClinVar as [Likely_benign]. Clinvar id is 2836762.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC35A2	NM_005660.3	c.1110A>T	p.Pro370=	synonymous_variant	4/5	ENST00000247138.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC35A2	ENST00000247138.11	c.1110A>T	p.Pro370=	synonymous_variant	4/5	1	NM_005660.3	P1

Frequencies

GnomAD3 genomes Cov.: 24

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 24

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

SLC35A2-congenital disorder of glycosylation Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 07, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.42	T
BayesDel_noAF	Benign	-0.83
CADD	Benign	2.0
DANN	Benign	0.81
FATHMM_MKL	Benign	0.18	N
LIST_S2	Benign	0.35	T;T;T
M_CAP	Benign	0.0064	T
MetaRNN	Benign	0.11	T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N
PROVEAN	Benign	-0.23	N;N;N
REVEL	Benign	0.039
Sift	Benign	0.40	T;T;T
Sift4G	Benign	0.17	T;T;T
Polyphen		0.013	.;B;.
Vest4		0.23
MutPred		0.47		Gain of glycosylation at T174 (P = 0.0624);Gain of glycosylation at T174 (P = 0.0624);.;
MVP		0.13
ClinPred		0.048	T
GERP RS		0.50
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-48762076;