Genetic Variant SLC35A4:p.Arg135Trp (chr5-140567572-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_080670.4(SLC35A4):c.403C>T(p.Arg135Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000372 in 1,614,234 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R135Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000038 ( 1 hom. )

Consequence

SLC35A4
NM_080670.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.71

Variant links:

Genes affected

SLC35A4 (HGNC:20753): (solute carrier family 35 member A4) Predicted to enable pyrimidine nucleotide-sugar transmembrane transporter activity. Involved in positive regulation of translation in response to stress. Predicted to be located in Golgi apparatus. Predicted to be integral component of Golgi membrane. [provided by Alliance of Genome Resources, Apr 2022]

SLC35A4 links:

LOC131768270 (HGNC:):

LOC131768270 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.33831498).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC35A4	NM_080670.4 link	c.403C>T	p.Arg135Trp	missense_variant	Exon 3 of 3	ENST00000323146.8	NP_542401.1	Q96G79-1
LOC131768270	NM_001394034.2 link	c.*810C>T		3_prime_UTR_variant	Exon 3 of 3		NP_001380963.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC35A4	ENST00000323146.8 link	c.403C>T	p.Arg135Trp	missense_variant	Exon 3 of 3	1	NM_080670.4	ENSP00000327133.3		Q96G79-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152254

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:

0.000192

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000359

AC:

AN:

251008

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135820

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000376

AC:

AN:

1461862

Hom.:

Cov.:

AF XY:

0.0000426

AC XY:

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000162

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000315

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152372

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74512

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 02, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.403C>T (p.R135W) alteration is located in exon 3 (coding exon 1) of the SLC35A4 gene. This alteration results from a C to T substitution at nucleotide position 403, causing the arginine (R) at amino acid position 135 to be replaced by a tryptophan (W). 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

0.23

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.70

D;D;D

Eigen

Uncertain

0.21

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.78

.;T;.

M_CAP

Benign

0.048

MetaRNN

Benign

0.34

T;T;T

MetaSVM

Benign

-0.61

MutationAssessor

Benign

1.9

L;L;L

PrimateAI

Benign

0.28

PROVEAN

Pathogenic

-4.6

D;.;D

REVEL

Uncertain

0.33

Sift

Uncertain

0.021

D;.;D

Sift4G

Uncertain

0.039

D;D;D

Polyphen

0.99

D;D;D

Vest4

0.35

MutPred

0.60

Gain of helix (P = 0.0325);Gain of helix (P = 0.0325);Gain of helix (P = 0.0325);

MVP

0.40

MPC

0.11

ClinPred

0.61

GERP RS

0.77

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.14

gMVP

0.49

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