19-5831841-A-G

Position:

• chr19-5831841-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_000150.4(FUT6):​c.727T>C​(p.Tyr243His) variant causes a missense change. The variant allele was found at a frequency of 0.0000131 in 152,164 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 31)
• Consequence: FUT6 NM_000150.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.63

Genes affected

FUT6 (HGNC:4017): (fucosyltransferase 6) The protein encoded by this gene is a Golgi stack membrane protein that is involved in the creation of sialyl-Lewis X, an E-selectin ligand. Mutations in this gene are a cause of fucosyltransferase-6 deficiency. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.965

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FUT6	NM_000150.4	c.727T>C	p.Tyr243His	missense_variant	3/3	ENST00000318336.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FUT6	ENST00000318336.10	c.727T>C	p.Tyr243His	missense_variant	3/3	2	NM_000150.4	P1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152164 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

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

GnomAD4 exome Cov.: 86

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152164 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74322

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.000131

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

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 26, 2023

The c.727T>C (p.Y243H) alteration is located in exon 3 (coding exon 1) of the FUT6 gene. This alteration results from a T to C substitution at nucleotide position 727, causing the tyrosine (Y) at amino acid position 243 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	Pathogenic	0.85
BayesDel_addAF	Benign	-0.031	T
BayesDel_noAF	Benign	-0.28
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.13	T;T;T;T;.
Eigen	Uncertain	0.38
Eigen_PC	Benign	0.18
FATHMM_MKL	Uncertain	0.94	D
M_CAP	Benign	0.021	T
MetaRNN	Pathogenic	0.97	D;D;D;D;D
MetaSVM	Benign	-0.52	T
MutationAssessor	Pathogenic	3.1	M;M;M;M;M
MutationTaster	Benign	0.52	N;N;N;N;N
PrimateAI	Uncertain	0.62	T
PROVEAN	Pathogenic	-4.9	D;D;D;D;.
REVEL	Benign	0.22
Sift	Pathogenic	0.0	D;D;D;D;.
Sift4G	Pathogenic	0.0	D;D;D;D;D
Polyphen		1.0	D;D;D;D;.
Vest4		0.78
MutPred		0.86		Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);
MVP		0.56
MPC		1.3
ClinPred		1.0	D
GERP RS		2.0
Varity_R		0.87
gMVP		0.45

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

Other links and lift over

dbSNP: rs2057100579; hg19: chr19-5831852;