Variant chr8-55102802-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_052898.2(XKR4):c.314G>A(p.Arg105Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000106 in 1,603,526 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000040 ( 1 hom., cov: 31)

Exomes 𝑓: 0.0000076 ( 0 hom. )

Consequence

XKR4
NM_052898.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.37

Variant links:

Genes affected

XKR4 (HGNC:29394): (XK related 4) Enables phospholipid scramblase activity. Involved in phosphatidylserine exposure on apoptotic cell surface. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

XKR4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06524873).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
XKR4	NM_052898.2 linkuse as main transcript	c.314G>A	p.Arg105Gln	missense_variant	1/3	ENST00000327381.7	NP_443130.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
XKR4	ENST00000327381.7 linkuse as main transcript	c.314G>A	p.Arg105Gln	missense_variant	1/3	1	NM_052898.2	ENSP00000328326	P1

Frequencies

GnomAD3 genomes

AF:

0.0000396

AC:

AN:

151626

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000394

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

GnomAD3 exomes

AF:

0.0000172

AC:

AN:

232716

Hom.:

AF XY:

0.0000156

AC XY:

AN XY:

128126

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000885

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000170

GnomAD4 exome

AF:

0.00000758

AC:

AN:

1451900

Hom.:

Cov.:

AF XY:

0.00000554

AC XY:

AN XY:

722628

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000135

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000396

AC:

AN:

151626

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

74048

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000394

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

Alfa

AF:

0.0000852

Hom.:

Bravo

AF:

0.0000491

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 28, 2024

The c.314G>A (p.R105Q) alteration is located in exon 1 (coding exon 1) of the XKR4 gene. This alteration results from a G to A substitution at nucleotide position 314, causing the arginine (R) at amino acid position 105 to be replaced by a glutamine (Q). 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

Benign

0.065

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

DANN

Benign

0.97

DEOGEN2

Benign

0.022

T;T

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.12

FATHMM_MKL

Benign

0.024

LIST_S2

Benign

0.80

.;T

M_CAP

Pathogenic

0.45

MetaRNN

Benign

0.065

T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

-0.63

N;N

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

0.44

N;.

REVEL

Benign

0.22

Sift

Benign

0.82

T;.

Sift4G

Benign

1.0

T;T

Polyphen

0.0

B;B

Vest4

0.11

MutPred

0.43

Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);

MVP

0.043

MPC

0.74

ClinPred

0.15

GERP RS

3.8

Varity_R

0.10

gMVP

0.13

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