Genetic Variant NM_021996.6:c.854C>A (chr9-133153767-G-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_021996.6(GBGT1):c.854C>A(p.Ala285Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000497 in 1,609,458 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign 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. A285V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

GBGT1
NM_021996.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.15

Publications

2 publications found

Variant links:

Genes affected

GBGT1 (HGNC:20460): (globoside alpha-1,3-N-acetylgalactosaminyltransferase 1 (FORS blood group)) This gene encodes a glycosyltransferase that plays a role in the synthesis of Forssman glycolipid (FG), a member of the globoseries glycolipid family. Glycolipids such as FG form attachment sites for the binding of pathogens to cells; expression of this protein may determine host tropism to microorganisms. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2013]

GBGT1 links:

ENSG00000285245 (HGNC:):

ENSG00000285245 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27156913).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021996.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GBGT1	NM_021996.6	MANE Select	c.854C>A	p.Ala285Glu	missense	Exon 7 of 7	NP_068836.2
GBGT1	NM_001282632.2		c.803C>A	p.Ala268Glu	missense	Exon 6 of 6	NP_001269561.1	Q8N5D6-3
GBGT1	NM_001288572.2		c.713C>A	p.Ala238Glu	missense	Exon 7 of 7	NP_001275501.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GBGT1	ENST00000372040.9	TSL:1 MANE Select	c.854C>A	p.Ala285Glu	missense	Exon 7 of 7	ENSP00000361110.3	Q8N5D6-1
GBGT1	ENST00000470431.5	TSL:1	c.*1407C>A		3_prime_UTR	Exon 6 of 6	ENSP00000495017.1	J7PW20
ENSG00000285245	ENST00000647146.1		c.396+1411C>A		intron	N/A	ENSP00000493691.1	A0A2R8Y471

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152226

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000813

AC:

AN:

246010

AF XY:

0.00000753

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000180

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000343

AC:

AN:

1457232

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

724692

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33392

American (AMR)

AF:

0.00

AC:

AN:

44226

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25762

East Asian (EAS)

AF:

0.00

AC:

AN:

39676

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85452

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53040

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1109736

Other (OTH)

AF:

0.00

AC:

AN:

60206

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.445

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:

0.0000197

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74352

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41462

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68048

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000247

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.59

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.037

Eigen

Benign

0.042

Eigen_PC

Benign

0.11

FATHMM_MKL

Benign

0.33

LIST_S2

Benign

0.63

M_CAP

Benign

0.018

MetaRNN

Benign

0.27

MetaSVM

Benign

-0.52

PhyloP100

1.1

PROVEAN

Benign

-1.6

REVEL

Benign

0.085

Sift

Benign

0.62

Sift4G

Benign

1.0

Polyphen

0.78

Vest4

0.10

MutPred

0.43

Loss of catalytic residue at M281 (P = 0.0571)

MVP

0.18

MPC

0.23

ClinPred

0.90

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.46

Mutation Taster

=76/24

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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