Genetic Variant NM_018389.5:c.556G>C (chr11-45810796-G-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_018389.5(SLC35C1):c.556G>C(p.Asp186His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,368 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D186N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SLC35C1
NM_018389.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.70

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.857

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC35C1	NM_018389.5 link	c.556G>C	p.Asp186His	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.556G>C	p.Asp186His	missense_variant	Exon 2 of 2	1	NM_018389.5	ENSP00000313318.3	Q96A29-1
SLC35C1	ENST00000442528.2 link	c.517G>C	p.Asp173His	missense_variant	Exon 3 of 3	1		ENSP00000412408.2	Q96A29-2
SLC35C1	ENST00000526817.2 link	c.517G>C	p.Asp173His	missense_variant	Exon 3 of 3	2		ENSP00000432145.2	Q96A29-2E9PS26

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460368

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726578

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26124

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52164

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111834

Other (OTH)

AF:

0.00

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.43

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.25

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.41

.;T

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

D;D

M_CAP

Benign

0.028

MetaRNN

Pathogenic

0.86

D;D

MetaSVM

Benign

-0.71

MutationAssessor

Uncertain

2.4

.;M

PhyloP100

9.7

PrimateAI

Uncertain

0.64

PROVEAN

Pathogenic

-4.4

D;D

REVEL

Uncertain

0.46

Sift

Benign

0.039

D;D

Sift4G

Uncertain

0.045

D;D

Polyphen

0.59

.;P

Vest4

0.91

MutPred

0.71

.;Gain of sheet (P = 0.0827);

MVP

0.88

MPC

0.89

ClinPred

0.85

GERP RS

6.1

Varity_R

0.84

gMVP

0.67

Mutation Taster

=3/97

disease causing

(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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over