rs771587118

Positions:

chr11-45805917-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018389.5(SLC35C1):c.116T>C(p.Leu39Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,614,070 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

SLC35C1
NM_018389.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 1.83

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1600708).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SLC35C1	NM_018389.5 linkuse as main transcript	c.116T>C	p.Leu39Ser	missense_variant	1/2	ENST00000314134.4	NP_060859.4
SLC35C1	NM_001145265.2 linkuse as main transcript	c.77T>C	p.Leu26Ser	missense_variant	2/3		NP_001138737.1
SLC35C1	NM_001145266.1 linkuse as main transcript	c.77T>C	p.Leu26Ser	missense_variant	2/3		NP_001138738.1
SLC35C1	XM_011520203.4 linkuse as main transcript	c.116T>C	p.Leu39Ser	missense_variant	1/2		XP_011518505.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC35C1	ENST00000314134.4 linkuse as main transcript	c.116T>C	p.Leu39Ser	missense_variant	1/2	1	NM_018389.5	ENSP00000313318	P4	Q96A29-1
SLC35C1	ENST00000442528.2 linkuse as main transcript	c.77T>C	p.Leu26Ser	missense_variant	2/3	1		ENSP00000412408	A1	Q96A29-2
SLC35C1	ENST00000526817.2 linkuse as main transcript	c.77T>C	p.Leu26Ser	missense_variant	2/3	2		ENSP00000432145	A1	Q96A29-2
SLC35C1	ENST00000530471.1 linkuse as main transcript	c.77T>C	p.Leu26Ser	missense_variant	2/2	3		ENSP00000432669

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000596

AC:

AN:

251468

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135916

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000405

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:

0.000163

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461874

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000380

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

AF:

0.00000657

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000416

ExAC

AF:

0.0000576

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Leukocyte adhesion deficiency type II

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 27, 2023	This sequence change replaces leucine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 39 of the SLC35C1 protein (p.Leu39Ser). This variant is present in population databases (rs771587118, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with SLC35C1-related conditions. ClinVar contains an entry for this variant (Variation ID: 530695). 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 not expected to disrupt SLC35C1 protein function with a negative 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Jan 03, 2022	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 08, 2021

The c.116T>C (p.L39S) alteration is located in exon 1 (coding exon 1) of the SLC35C1 gene. This alteration results from a T to C substitution at nucleotide position 116, causing the leucine (L) at amino acid position 39 to be replaced by a serine (S). 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

0.15

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.25

.;.;T;T

Eigen

Benign

-0.24

Eigen_PC

Benign

-0.12

FATHMM_MKL

Benign

0.67

LIST_S2

Benign

0.75

T;T;T;T

M_CAP

Benign

0.036

MetaRNN

Benign

0.16

T;T;T;T

MetaSVM

Benign

-0.71

MutationAssessor

Benign

1.6

.;.;L;.

MutationTaster

Benign

0.83

D;D;D

PrimateAI

Benign

0.43

PROVEAN

Benign

-2.2

N;N;N;N

REVEL

Benign

0.26

Sift

Uncertain

0.022

D;D;D;D

Sift4G

Uncertain

0.058

T;D;T;D

Polyphen

0.017

.;.;B;.

Vest4

0.61

MutPred

0.51

.;.;Loss of stability (P = 0.0369);.;

MVP

0.80

MPC

0.78

ClinPred

0.040

GERP RS

3.5

Varity_R

0.13

gMVP

0.52

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

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