chr19-5844170-G-A
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Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_001382749.2(FUT3):c.670C>T(p.Arg224Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000211 in 1,613,768 control chromosomes in the GnomAD database, with no homozygous occurrence. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000021 ( 0 hom. )
Consequence
FUT3
NM_001382749.2 missense
NM_001382749.2 missense
Scores
1
4
11
Clinical Significance
Conservation
PhyloP100: -1.93
Genes affected
FUT3 (HGNC:4014): (fucosyltransferase 3 (Lewis blood group)) The Lewis histo-blood group system comprises a set of fucosylated glycosphingolipids that are synthesized by exocrine epithelial cells and circulate in body fluids. The glycosphingolipids function in embryogenesis, tissue differentiation, tumor metastasis, inflammation, and bacterial adhesion. They are secondarily absorbed to red blood cells giving rise to their Lewis phenotype. This gene is a member of the fucosyltransferase family, which catalyzes the addition of fucose to precursor polysaccharides in the last step of Lewis antigen biosynthesis. It encodes an enzyme with alpha(1,3)-fucosyltransferase and alpha(1,4)-fucosyltransferase activities. Mutations in this gene are responsible for the majority of Lewis antigen-negative phenotypes. Differences in the expression of this gene are associated with host susceptibility to viral infection. [provided by RefSeq, Aug 2020]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -4 ACMG points.
BS2
High AC in GnomAdExome4 at 31 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
FUT3 | NM_001097639.3 | c.670C>T | p.Arg224Cys | missense_variant | 3/3 | ENST00000709635.1 | |
FUT3 | NM_001382749.2 | c.670C>T | p.Arg224Cys | missense_variant | 3/3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
FUT3 | ENST00000303225.12 | c.670C>T | p.Arg224Cys | missense_variant | 3/3 | 1 | P1 | ||
FUT3 | ENST00000458379.7 | c.670C>T | p.Arg224Cys | missense_variant | 2/2 | 1 | P1 | ||
FUT3 | ENST00000589620.6 | c.670C>T | p.Arg224Cys | missense_variant | 3/3 | 1 | P1 | ||
FUT3 | ENST00000589918.5 | c.670C>T | p.Arg224Cys | missense_variant | 3/3 | 1 | P1 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152090Hom.: 0 Cov.: 31
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GnomAD3 exomes AF: 0.0000359 AC: 9AN: 250616Hom.: 0 AF XY: 0.0000516 AC XY: 7AN XY: 135592
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GnomAD4 exome AF: 0.0000212 AC: 31AN: 1461678Hom.: 0 Cov.: 34 AF XY: 0.0000248 AC XY: 18AN XY: 727150
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GnomAD4 genome AF: 0.0000197 AC: 3AN: 152090Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1AN XY: 74284
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 27, 2022 | The c.670C>T (p.R224C) alteration is located in exon 3 (coding exon 1) of the FUT3 gene. This alteration results from a C to T substitution at nucleotide position 670, causing the arginine (R) at amino acid position 224 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
M_CAP
Benign
T
MetaRNN
Uncertain
D;D;D;D
MetaSVM
Benign
T
MutationTaster
Benign
N;N;N;N
PrimateAI
Benign
T
PROVEAN
Pathogenic
D;D;.;.
REVEL
Benign
Sift
Uncertain
D;D;.;.
Sift4G
Uncertain
D;D;D;D
Vest4
MutPred
Loss of MoRF binding (P = 0.0053);Loss of MoRF binding (P = 0.0053);Loss of MoRF binding (P = 0.0053);Loss of MoRF binding (P = 0.0053);
MVP
MPC
ClinPred
D
GERP RS
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at