6-31864703-C-T

Position:

chr6-31864703-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_025257.3(SLC44A4):c.1960G>A(p.Gly654Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 1,613,822 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

SLC44A4
NM_025257.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.51

Variant links:

Genes affected

SLC44A4 (HGNC:13941): (solute carrier family 44 member 4) The protein encoded by this gene may be a sodium-dependent transmembrane transport protein involved in the uptake of choline by cholinergic neurons. Defects in this gene can cause sialidosis, a lysosomal storage disease. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2010]

SLC44A4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 30 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SLC44A4	NM_025257.3 linkuse as main transcript	c.1960G>A	p.Gly654Ser	missense_variant	20/21	ENST00000229729.11	NP_079533.2
SLC44A4	NM_001178044.2 linkuse as main transcript	c.1834G>A	p.Gly612Ser	missense_variant	19/20		NP_001171515.1
SLC44A4	NM_001178045.2 linkuse as main transcript	c.1732G>A	p.Gly578Ser	missense_variant	20/21		NP_001171516.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC44A4	ENST00000229729.11 linkuse as main transcript	c.1960G>A	p.Gly654Ser	missense_variant	20/21	1	NM_025257.3	ENSP00000229729	P1	Q53GD3-1
SLC44A4	ENST00000375562.8 linkuse as main transcript	c.1834G>A	p.Gly612Ser	missense_variant	19/20	2		ENSP00000364712		Q53GD3-4
SLC44A4	ENST00000544672.5 linkuse as main transcript	c.1732G>A	p.Gly578Ser	missense_variant	20/21	2		ENSP00000444109		Q53GD3-3
SLC44A4	ENST00000487680.1 linkuse as main transcript			upstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151938

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000279

AC:

AN:

251104

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135794

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

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:

0.000326

GnomAD4 exome

AF:

0.0000205

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000134

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:

0.0000198

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151938

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74202

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.0000655

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

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 29, 2022

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). This variant has not been reported in the literature in individuals affected with SLC44A4-related conditions. This variant is present in population databases (rs773968083, gnomAD 0.01%). This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 654 of the SLC44A4 protein (p.Gly654Ser). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.13

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.025

T;.;.;.

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.96

M_CAP

Benign

0.044

MetaRNN

Uncertain

0.71

D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

2.0

M;.;.;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.78

PROVEAN

Uncertain

-4.1

D;D;D;.

REVEL

Benign

0.20

Sift

Benign

0.062

T;T;T;.

Sift4G

Benign

0.32

T;T;T;.

Polyphen

0.99

D;.;.;.

Vest4

0.73

MutPred

0.53

Loss of glycosylation at S653 (P = 0.0326);.;.;.;

MVP

0.21

MPC

0.81

ClinPred

0.97

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.30

gMVP

0.79

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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