Genetic Variant FUT8:p.Ile74Leu (chr14-65615994-A-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001371533.1(FUT8):c.220A>C(p.Ile74Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,328 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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. I74M) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FUT8
NM_001371533.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.359

Publications

0 publications found

Variant links:

Genes affected

FUT8 (HGNC:4019): (fucosyltransferase 8) This gene encodes an enzyme belonging to the family of fucosyltransferases. The product of this gene catalyzes the transfer of fucose from GDP-fucose to N-linked type complex glycopeptides. This enzyme is distinct from other fucosyltransferases which catalyze alpha1-2, alpha1-3, and alpha1-4 fucose addition. The expression of this gene may contribute to the malignancy of cancer cells and to their invasive and metastatic capabilities. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2011]

FUT8 Gene-Disease associations (from GenCC):

congenital disorder of glycosylation with defective fucosylation 1
Inheritance: AR Classification: STRONG, MODERATE Submitted by: PanelApp Australia, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

FUT8 links:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06424412).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FUT8	NM_001371533.1 link	c.220A>C	p.Ile74Leu	missense_variant	Exon 4 of 11	ENST00000673929.1	NP_001358462.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FUT8	ENST00000673929.1 link	c.220A>C	p.Ile74Leu	missense_variant	Exon 4 of 11		NM_001371533.1	ENSP00000501213.1		Q9BYC5-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460328

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726574

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33420

American (AMR)

AF:

0.00

AC:

AN:

44630

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26108

East Asian (EAS)

AF:

0.00

AC:

AN:

39656

South Asian (SAS)

AF:

0.00

AC:

AN:

86152

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53388

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110878

Other (OTH)

AF:

0.00

AC:

AN:

60336

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.60

CADD

Benign

7.3

(source)

DANN

Benign

0.86

DEOGEN2

Benign

0.18

T;T

Eigen

Benign

-0.78

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.33

LIST_S2

Uncertain

0.86

.;D

M_CAP

Benign

0.0055

MetaRNN

Benign

0.064

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

L;L

PhyloP100

0.36

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.050

N;N

REVEL

Benign

0.025

Sift

Benign

0.71

T;T

Sift4G

Benign

0.42

T;T

Polyphen

0.0

B;B

Vest4

0.43

MutPred

0.25

Gain of catalytic residue at I74 (P = 0);Gain of catalytic residue at I74 (P = 0);

MVP

0.19

MPC

0.59

ClinPred

0.066

GERP RS

2.4

Varity_R

0.045

gMVP

0.21

Mutation Taster

=90/10

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

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chr14-65615994-A-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over