Genetic Variant SLC35A2:p.Pro226Pro (chrX-48904641-C-T) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_005660.3(SLC35A2):c.1163+105G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000299 in 1,206,007 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 12 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000030 ( 0 hom. 11 hem. )

Consequence

SLC35A2
NM_005660.3 intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.260

Publications

1 publications found

Variant links:

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]

SLC35A2 Gene-Disease associations (from GenCC):

SLC35A2-congenital disorder of glycosylation
Inheritance: XL, Unknown Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Illumina, Orphanet, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
X-linked complex neurodevelopmental disorder
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen

SLC35A2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.94).

BP6

Variant X-48904641-C-T is Benign according to our data. Variant chrX-48904641-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2660485.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High Hemizygotes in GnomAdExome4 at 11 XL,Unknown gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC35A2	NM_005660.3 link	c.1163+105G>A		intron_variant	Intron 4 of 4	ENST00000247138.11	NP_005651.1	P78381-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC35A2	ENST00000247138.11 link	c.1163+105G>A		intron_variant	Intron 4 of 4	1	NM_005660.3	ENSP00000247138.5		P78381-1

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

112244

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:

0.0000565

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000118

AC:

AN:

169801

AF XY:

0.0000177

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000270

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000302

AC:

AN:

1093763

Hom.:

Cov.:

AF XY:

0.0000306

AC XY:

AN XY:

359609

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26318

American (AMR)

AF:

0.00

AC:

AN:

34803

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19283

East Asian (EAS)

AF:

0.0000666

AC:

AN:

30023

South Asian (SAS)

AF:

0.00

AC:

AN:

53217

European-Finnish (FIN)

AF:

0.000125

AC:

AN:

40135

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4125

European-Non Finnish (NFE)

AF:

0.0000298

AC:

AN:

839928

Other (OTH)

AF:

0.0000218

AC:

AN:

45931

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000267

AC:

AN:

112244

Hom.:

Cov.:

AF XY:

0.0000291

AC XY:

AN XY:

34380

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30872

American (AMR)

AF:

0.00

AC:

AN:

10689

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2650

East Asian (EAS)

AF:

0.00

AC:

AN:

3552

South Asian (SAS)

AF:

0.00

AC:

AN:

2734

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6204

Middle Eastern (MID)

AF:

0.00

AC:

AN:

239

European-Non Finnish (NFE)

AF:

0.0000565

AC:

AN:

53114

Other (OTH)

AF:

0.00

AC:

AN:

1506

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Oct 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

SLC35A2: BP4, BP7 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.94

CADD

Benign

0.53

(source)

DANN

Benign

0.39

PhyloP100

-0.26

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Mutation Taster

=100/0

polymorphism

(source)

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

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X-48904641-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over