Variant 22-42693283-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_017436.7(A4GALT):c.669C>T(p.Phe223=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00346 in 1,612,984 control chromosomes in the GnomAD database, including 181 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.019 ( 84 hom., cov: 31)

Exomes 𝑓: 0.0019 ( 97 hom. )

Consequence

A4GALT
NM_017436.7 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.0980

Variant links:

Genes affected

A4GALT (HGNC:18149): (alpha 1,4-galactosyltransferase (P1PK blood group)) The protein encoded by this gene catalyzes the transfer of galactose to lactosylceramide to form globotriaosylceramide, which has been identified as the P(k) antigen of the P blood group system. This protein, a type II membrane protein found in the Golgi, is also required for the synthesis of the bacterial verotoxins receptor. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2015]

A4GALT links:

CYB5R3 (HGNC:2873): (cytochrome b5 reductase 3) This gene encodes cytochrome b5 reductase, which includes a membrane-bound form in somatic cells (anchored in the endoplasmic reticulum, mitochondrial and other membranes) and a soluble form in erythrocytes. The membrane-bound form exists mainly on the cytoplasmic side of the endoplasmic reticulum and functions in desaturation and elongation of fatty acids, in cholesterol biosynthesis, and in drug metabolism. The erythrocyte form is located in a soluble fraction of circulating erythrocytes and is involved in methemoglobin reduction. The membrane-bound form has both membrane-binding and catalytic domains, while the soluble form has only the catalytic domain. Alternate splicing results in multiple transcript variants. Mutations in this gene cause methemoglobinemias. [provided by RefSeq, Jan 2010]

CYB5R3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.62).

BP6

Variant 22-42693283-G-A is Benign according to our data. Variant chr22-42693283-G-A is described in ClinVar as [Benign]. Clinvar id is 777729.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.098 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0633 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
A4GALT	NM_017436.7 linkuse as main transcript	c.669C>T	p.Phe223=	synonymous_variant	3/3	ENST00000642412.2	NP_059132.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
A4GALT	ENST00000642412.2 linkuse as main transcript	c.669C>T	p.Phe223=	synonymous_variant	3/3		NM_017436.7	ENSP00000494127	P1

Frequencies

GnomAD3 genomes

AF:

0.0187

AC:

2849

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0653

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00720

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000622

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.0105

GnomAD3 exomes

AF:

0.00452

AC:

1124

AN:

248788

Hom.:

AF XY:

0.00339

AC XY:

458

AN XY:

135274

show subpopulations

Gnomad AFR exome

AF:

0.0641

Gnomad AMR exome

AF:

0.00235

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000447

Gnomad OTH exome

AF:

0.00164

GnomAD4 exome

AF:

0.00186

AC:

2721

AN:

1460678

Hom.:

Cov.:

AF XY:

0.00159

AC XY:

1158

AN XY:

726662

show subpopulations

Gnomad4 AFR exome

AF:

0.0684

Gnomad4 AMR exome

AF:

0.00273

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000197

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000333

Gnomad4 OTH exome

AF:

0.00406

GnomAD4 genome

AF:

0.0188

AC:

2856

AN:

152306

Hom.:

Cov.:

AF XY:

0.0176

AC XY:

1311

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.0653

Gnomad4 AMR

AF:

0.00719

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.0104

Alfa

AF:

0.0101

Hom.:

Bravo

AF:

0.0218

Asia WGS

AF:

0.00375

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 22, 2024	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.62

CADD

Benign

1.8

DANN

Benign

0.66

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over