19-48750557-A-T

Variant names:

• chr19-48750557-A-T
• NM_001384359.1:c.725T>A

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PM5 PP3_Strong

The NM_001384359.1(FUT1):​c.725T>A​(p.Leu242His) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. L242R) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FUT1 NM_001384359.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.05

Genes affected

FUT1 (HGNC:4012): (fucosyltransferase 1 (H blood group)) This gene encodes a Golgi stack membrane protein that is involved in the creation of a precursor of the H antigen, which is required for the final step in the synthesis of soluble A and B antigens. This is one of two genes encoding the galactoside 2-L-fucosyltransferase enzyme. Mutations in this gene are a cause of the H-Bombay blood group. [provided by RefSeq, Aug 2016]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-48750557-A-C is described in Lovd as [Pathogenic].
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.989

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FUT1	NM_001384359.1	c.725T>A	p.Leu242His	missense_variant	Exon 2 of 2	ENST00000645652.2	NP_001371288.1
FUT1	NM_000148.4	c.725T>A	p.Leu242His	missense_variant	Exon 4 of 4		NP_000139.1
FUT1	NM_001329877.1	c.725T>A	p.Leu242His	missense_variant	Exon 5 of 5		NP_001316806.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FUT1	ENST00000645652.2	c.725T>A	p.Leu242His	missense_variant	Exon 2 of 2		NM_001384359.1	ENSP00000494643.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.88
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
CADD	Uncertain	26
DANN	Uncertain	0.98
DEOGEN2	Benign	0.25	T;T
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.86	.;D
M_CAP	Pathogenic	0.62	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.2	M;M
PrimateAI	Uncertain	0.49	T
PROVEAN	Pathogenic	-5.7	.;D
REVEL	Pathogenic	0.81
Sift	Pathogenic	0.0	.;D
Sift4G	Pathogenic	0.0	.;D
Polyphen		1.0	D;D
Vest4		0.84
MutPred		0.91		Loss of stability (P = 0.0259);Loss of stability (P = 0.0259);
MVP		0.99
MPC		1.5
ClinPred		1.0	D
GERP RS		3.4
Varity_R		0.94
gMVP		0.99

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-49253814;