Genetic Variant NM_005668.6:c.1061G>A (chr5-100811866-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_005668.6(ST8SIA4):c.1061G>A(p.Gly354Glu) variant causes a missense change. The variant allele was found at a frequency of 0.00008 in 1,612,078 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000079 ( 0 hom. )

Consequence

ST8SIA4
NM_005668.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.63

Publications

4 publications found

Variant links:

Genes affected

ST8SIA4 (HGNC:10871): (ST8 alpha-N-acetyl-neuraminide alpha-2,8-sialyltransferase 4) The protein encoded by this gene catalyzes the polycondensation of alpha-2,8-linked sialic acid required for the synthesis of polysialic acid, a modulator of the adhesive properties of neural cell adhesion molecule (NCAM1). The encoded protein, which is a member of glycosyltransferase family 29, is a type II membrane protein that may be present in the Golgi apparatus. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ST8SIA4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.12562934).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005668.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ST8SIA4	NM_005668.6	MANE Select	c.1061G>A	p.Gly354Glu	missense	Exon 5 of 5	NP_005659.1	Q92187-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ST8SIA4	ENST00000231461.10	TSL:1 MANE Select	c.1061G>A	p.Gly354Glu	missense	Exon 5 of 5	ENSP00000231461.4	Q92187-1
ST8SIA4	ENST00000956904.1		c.929G>A	p.Gly310Glu	missense	Exon 4 of 4	ENSP00000626963.1
ST8SIA4	ENST00000881366.1		c.803G>A	p.Gly268Glu	missense	Exon 4 of 4	ENSP00000551425.1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000176

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000920

AC:

AN:

250038

AF XY:

0.0000739

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.0000292

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000186

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000795

AC:

116

AN:

1459938

Hom.:

Cov.:

AF XY:

0.0000730

AC XY:

AN XY:

726288

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33284

American (AMR)

AF:

0.0000225

AC:

AN:

44406

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26028

East Asian (EAS)

AF:

0.00

AC:

AN:

39658

South Asian (SAS)

AF:

0.00

AC:

AN:

86024

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53332

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.000102

AC:

113

AN:

1111184

Other (OTH)

AF:

0.0000332

AC:

AN:

60274

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

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

AF:

0.0000854

AC:

AN:

152140

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74324

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68008

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000173

Hom.:

Bravo

AF:

0.0000907

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000988

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.027

BayesDel_noAF

Uncertain

-0.010

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.11

Eigen

Benign

0.063

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.78

M_CAP

Benign

0.011

MetaRNN

Benign

0.13

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

PhyloP100

3.6

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-0.090

REVEL

Benign

0.17

Sift

Benign

0.51

Sift4G

Benign

0.71

Polyphen

0.037

Vest4

0.49

MVP

0.14

MPC

0.65

ClinPred

0.044

GERP RS

5.7

Varity_R

0.16

gMVP

0.84

Mutation Taster

=17/83

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over