Genetic Variant NM_002033.4:c.108C>A (chr11-94544241-C-A) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_002033.4(FUT4):c.108C>A(p.Gly36Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000744 in 1,344,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. G36G) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.4e-7 ( 0 hom. )

Consequence

FUT4
NM_002033.4 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0380

Publications

0 publications found

Variant links:

Genes affected

FUT4 (HGNC:4015): (fucosyltransferase 4) The product of this gene transfers fucose to N-acetyllactosamine polysaccharides to generate fucosylated carbohydrate structures. It catalyzes the synthesis of the non-sialylated antigen, Lewis x (CD15). [provided by RefSeq, Jan 2009]

FUT4 links:

PIWIL4 (HGNC:18444): (piwi like RNA-mediated gene silencing 4) PIWIL4 belongs to the Argonaute family of proteins, which function in development and maintenance of germline stem cells (Sasaki et al., 2003 [PubMed 12906857]).[supplied by OMIM, Mar 2008]

PIWIL4 links:

ENSG00000304830 (HGNC:):

ENSG00000304830 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP7

Synonymous conserved (PhyloP=-0.038 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FUT4	NM_002033.4 link	c.108C>A	p.Gly36Gly	synonymous_variant	Exon 1 of 1	ENST00000358752.4	NP_002024.1	P22083-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FUT4	ENST00000358752.4 link	c.108C>A	p.Gly36Gly	synonymous_variant	Exon 1 of 1	6	NM_002033.4	ENSP00000351602.2	P22083-1
PIWIL4	ENST00000543336.5 link	n.-121+252C>A		intron_variant	Intron 1 of 13	2		ENSP00000444575.1	Q7Z3Z4-3
ENSG00000304830	ENST00000806516.1 link	n.-97G>T		upstream_gene_variant

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.44e-7

AC:

AN:

1344646

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

662648

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

26928

American (AMR)

AF:

0.00

AC:

AN:

28530

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20496

East Asian (EAS)

AF:

0.00

AC:

AN:

31648

South Asian (SAS)

AF:

0.00

AC:

AN:

70824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46856

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3848

European-Non Finnish (NFE)

AF:

9.43e-7

AC:

AN:

1060732

Other (OTH)

AF:

0.00

AC:

AN:

54784

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

6.6

(source)

DANN

Benign

0.89

PhyloP100

-0.038

PromoterAI

-0.098

Neutral

(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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over