X-48904698-CCCTT-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 4P and 6B. PVS1_StrongBP6_ModerateBS2

The ENST00000445167.7(SLC35A2):​c.617_620del​(p.Gln206ArgfsTer45) variant causes a frameshift change. The variant allele was found at a frequency of 0.000043 in 1,209,307 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 17 hemizygotes in GnomAD. Variant has been reported in ClinVar as Likely benign (β˜…).

Frequency

Genomes: 𝑓 0.000080 ( 0 hom., 1 hem., cov: 23)
Exomes 𝑓: 0.000039 ( 0 hom. 16 hem. )

Consequence

SLC35A2
ENST00000445167.7 frameshift

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 4.36
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 5 pathogenic variants in the truncated region.
BP6
Variant X-48904698-CCCTT-C is Benign according to our data. Variant chrX-48904698-CCCTT-C is described in ClinVar as [Likely_benign]. Clinvar id is 420723.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High Hemizygotes in GnomAdExome4 at 16 XL gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SLC35A2NM_005660.3 linkuse as main transcriptc.1163+44_1163+47del intron_variant ENST00000247138.11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SLC35A2ENST00000247138.11 linkuse as main transcriptc.1163+44_1163+47del intron_variant 1 NM_005660.3 P1P78381-1

Frequencies

GnomAD3 genomes
AF:
0.0000804
AC:
9
AN:
112008
Hom.:
0
Cov.:
23
AF XY:
0.00
AC XY:
0
AN XY:
34154
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:
0.00225
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.000667
GnomAD3 exomes
AF:
0.000149
AC:
27
AN:
180980
Hom.:
0
AF XY:
0.000167
AC XY:
11
AN XY:
65700
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00188
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000124
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000392
AC:
43
AN:
1097246
Hom.:
0
AF XY:
0.0000441
AC XY:
16
AN XY:
362634
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00126
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000594
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000803
AC:
9
AN:
112061
Hom.:
0
Cov.:
23
AF XY:
0.0000292
AC XY:
1
AN XY:
34217
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00225
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000658
Alfa
AF:
0.0000252
Hom.:
1
Bravo
AF:
0.0000604

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxApr 14, 2016This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

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.

Other links and lift over

dbSNP: rs56243326; hg19: chrX-48761975; API