11-45811112-C-T

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1PM2PP3_StrongPP5

The NM_018389.5(SLC35C1):c.872C>T(p.Thr291Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,460,858 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

SLC35C1
NM_018389.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:1

Conservation

PhyloP100: 7.67

Publications

0 publications found

Variant links:

Genes affected

SLC35C1 (HGNC:20197): (solute carrier family 35 member C1) This gene encodes a GDP-fucose transporter that is found in the Golgi apparatus. Mutations in this gene result in congenital disorder of glycosylation type IIc. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2009]

SLC35C1 Gene-Disease associations (from GenCC):

leukocyte adhesion deficiency type II
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet

SLC35C1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_018389.5

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.96

PP5

Variant 11-45811112-C-T is Pathogenic according to our data. Variant chr11-45811112-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 216999.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC35C1	NM_018389.5 link	c.872C>T	p.Thr291Ile	missense_variant	Exon 2 of 2	ENST00000314134.4	NP_060859.4	Q96A29-1B3KQH0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SLC35C1	ENST00000314134.4 link	c.872C>T	p.Thr291Ile	missense_variant	Exon 2 of 2	1	NM_018389.5	ENSP00000313318.3	Q96A29-1
SLC35C1	ENST00000442528.2 link	c.833C>T	p.Thr278Ile	missense_variant	Exon 3 of 3	1		ENSP00000412408.2	Q96A29-2
SLC35C1	ENST00000526817.2 link	c.833C>T	p.Thr278Ile	missense_variant	Exon 3 of 3	2		ENSP00000432145.2	Q96A29-2E9PS26

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000799

AC:

AN:

250354

AF XY:

0.00000738

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1460858

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726792

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112002

Other (OTH)

AF:

0.00

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00000454

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Leukocyte adhesion deficiency type II

Pathogenic:2Uncertain:1

Jul 12, 2019

Institute of Human Genetics Munich, TUM University Hospital

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 25, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 291 of the SLC35C1 protein (p.Thr291Ile). This variant is present in population databases (rs751828447, gnomAD 0.006%). This missense change has been observed in individual(s) with SLC35C1-related conditions (PMID: 25326637). ClinVar contains an entry for this variant (Variation ID: 216999). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SLC35C1 protein function with a positive predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Nov 27, 2012

UCLA Clinical Genomics Center, UCLA

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.26

BayesDel_noAF

Pathogenic

0.32

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.52

.;D

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.96

D;D

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.96

D;D

MetaSVM

Uncertain

0.41

MutationAssessor

Pathogenic

3.7

.;H

PhyloP100

7.7

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-5.9

D;D

REVEL

Pathogenic

0.81

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

.;D

Vest4

0.97

MutPred

0.85

.;Gain of catalytic residue at P293 (P = 0.0347);

MVP

0.92

MPC

1.6

ClinPred

0.99

GERP RS

5.0

Varity_R

0.96

gMVP

0.96

Mutation Taster

=3/97

disease causing (ClinVar)

(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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over