chr14-65615974-A-G

Variant names:

• chr14-65615974-A-G
• rs369850265
• NM_001371533.1:c.204-4A>G

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS1

The NM_001371533.1(FUT8):​c.204-4A>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000173 in 1,597,800 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.000039 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00019 (0 hom.)
• Consequence: FUT8 NM_001371533.1 splice_region, intron
• Scores: Splicing: ADA: 0.00005908
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: -1.02
• Publications: 0 publications found

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)

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 14-65615974-A-G is Benign according to our data. Variant chr14-65615974-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 3057892.Status of the report is no_assertion_criteria_provided, 0 stars.
• BS1: Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.000187 (271/1445576) while in subpopulation NFE AF = 0.000241 (265/1101152). AF 95% confidence interval is 0.000216. There are 0 homozygotes in GnomAdExome4. There are 126 alleles in the male GnomAdExome4 subpopulation. Median coverage is 28. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FUT8	NM_001371533.1	c.204-4A>G		splice_region_variant, intron_variant	Intron 3 of 10	ENST00000673929.1	NP_001358462.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FUT8	ENST00000673929.1	c.204-4A>G		splice_region_variant, intron_variant	Intron 3 of 10		NM_001371533.1	ENSP00000501213.1

Frequencies

GnomAD3 genomes AF: 0.0000394 AC: 6 AN: 152224 Hom.: 0 Cov.: 32

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: 0.0000882

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000574 AC: 14 AN: 243970 AF XY: 0.0000455

Gnomad AFR exome AF: 0.0000622

Gnomad AMR exome AF: 0.0000304

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000108

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000187 AC: 271 AN: 1445576 Hom.: 0 Cov.: 28 AF XY: 0.000175 AC XY: 126 AN XY: 719972

African (AFR) AF: 0.0000915 AC: 3 AN: 32776

American (AMR) AF: 0.0000233 AC: 1 AN: 42952

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25728

East Asian (EAS) AF: 0.00 AC: 0 AN: 39544

South Asian (SAS) AF: 0.00 AC: 0 AN: 84750

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53302

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5704

European-Non Finnish (NFE) AF: 0.000241 AC: 265 AN: 1101152

Other (OTH) AF: 0.0000335 AC: 2 AN: 59668

GnomAD4 genome AF: 0.0000394 AC: 6 AN: 152224 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74376

African (AFR) AF: 0.00 AC: 0 AN: 41458

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000882 AC: 6 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000115 Hom.: 0

Bravo AF: 0.0000567

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

FUT8-related disorder Benign:1

Apr 08, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	0.13
DANN	Benign	0.51
PhyloP100		-1.0

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000059
dbscSNV1_RF	Benign	0.062
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

Other links and lift over

dbSNP: rs369850265; hg19: chr14-66082692;