Genetic Variant FUT2:p.Tyr83His (chr19-48703203-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000511.6(FUT2):c.247T>C(p.Tyr83His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 152,012 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Consequence

FUT2
NM_000511.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.73

Variant links:

Genes affected

FUT2 (HGNC:4013): (fucosyltransferase 2 (H blood group)) This gene is one of two encoding the galactoside 2-L-fucosyltransferase enzyme. The encoded protein is important for the final step in the soluble ABO blood group antigen synthesis pathway. It is also involved in cell-cell interaction, cell surface expression, and cell proliferation. Mutations in this gene are a cause of the H-Bombay blood group where red blood cells lack the H antigen. [provided by RefSeq, May 2022]

FUT2 links:

LOC105447645 (HGNC:):

LOC105447645 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FUT2	NM_000511.6 link	c.247T>C	p.Tyr83His	missense_variant	Exon 2 of 2	ENST00000425340.3	NP_000502.4	Q10981A8K2L2
FUT2	NM_001097638.3 link	c.247T>C	p.Tyr83His	missense_variant	Exon 2 of 2		NP_001091107.1	Q10981A8K2L2
LOC105447645	NR_131188.1 link	n.646A>G		non_coding_transcript_exon_variant	Exon 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FUT2	ENST00000425340.3 link	c.247T>C	p.Tyr83His	missense_variant	Exon 2 of 2	1	NM_000511.6	ENSP00000387498.2		Q10981
FUT2	ENST00000522966.2 link	c.247T>C	p.Tyr83His	missense_variant	Exon 2 of 2	2		ENSP00000430227.2		Q10981

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152012

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250584

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135546

show subpopulations

Gnomad AFR exome

AF:

0.0000618

Gnomad AMR exome

AF:

0.00

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:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152012

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74222

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

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

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 30, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.247T>C (p.Y83H) alteration is located in exon 2 (coding exon 1) of the FUT2 gene. This alteration results from a T to C substitution at nucleotide position 247, causing the tyrosine (Y) at amino acid position 83 to be replaced by a histidine (H). 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

Uncertain

0.37

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

.;T;T

Eigen

Benign

0.13

Eigen_PC

Benign

-0.079

FATHMM_MKL

Benign

0.31

LIST_S2

Uncertain

0.93

.;.;D

M_CAP

Benign

0.053

MetaRNN

Uncertain

0.66

D;D;D

MetaSVM

Uncertain

0.60

MutationAssessor

Pathogenic

2.9

.;M;M

PrimateAI

Benign

0.46

PROVEAN

Uncertain

-3.9

D;D;D

REVEL

Uncertain

0.46

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.030

D;T;T

Polyphen

1.0

.;D;D

Vest4

0.41, 0.44

MutPred

0.61

Loss of catalytic residue at Y83 (P = 0.0081);Loss of catalytic residue at Y83 (P = 0.0081);Loss of catalytic residue at Y83 (P = 0.0081);

MVP

0.98

MPC

0.83

ClinPred

0.90

GERP RS

3.3

Varity_R

0.51

gMVP

0.80

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