Variant 1-27960311-C-T 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_018053.4(XKR8):c.242C>T(p.Pro81Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000355 in 1,434,962 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

XKR8
NM_018053.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.345

Variant links:

Genes affected

XKR8 (HGNC:25508): (XK related 8) Enables phospholipid scramblase activity. Involved in engulfment of apoptotic cell; phosphatidylserine exposure on apoptotic cell surface; and positive regulation of myoblast differentiation. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

XKR8 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=0.052901328).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
XKR8	NM_018053.4 linkuse as main transcript	c.242C>T	p.Pro81Leu	missense_variant	1/3	ENST00000373884.6	NP_060523.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
XKR8	ENST00000373884.6 linkuse as main transcript	c.242C>T	p.Pro81Leu	missense_variant	1/3	1	NM_018053.4	ENSP00000362991	P1

Frequencies

GnomAD3 genomes

AF:

0.000204

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000221

AC:

AN:

45306

Hom.:

AF XY:

0.00

AC XY:

AN XY:

25604

show subpopulations

Gnomad AFR exome

AF:

0.000779

Gnomad AMR exome

AF:

0.00

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:

0.00

GnomAD4 exome

AF:

0.0000156

AC:

AN:

1282750

Hom.:

Cov.:

AF XY:

0.0000175

AC XY:

AN XY:

628156

show subpopulations

Gnomad4 AFR exome

AF:

0.000705

Gnomad4 AMR exome

AF:

0.00

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:

0.00

Gnomad4 OTH exome

AF:

0.0000376

GnomAD4 genome

AF:

0.000204

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.000724

Gnomad4 AMR

AF:

0.0000655

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

Bravo

AF:

0.000212

ExAC

AF:

0.0000104

AC:

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

May 30, 2024

The c.242C>T (p.P81L) alteration is located in exon 1 (coding exon 1) of the XKR8 gene. This alteration results from a C to T substitution at nucleotide position 242, causing the proline (P) at amino acid position 81 to be replaced by a leucine (L). 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

0.15

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.021

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.74

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.56

M_CAP

Benign

0.028

MetaRNN

Benign

0.053

MetaSVM

Benign

-0.89

MutationAssessor

Uncertain

2.0

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.66

REVEL

Benign

0.16

Sift

Benign

0.052

Sift4G

Uncertain

0.050

Polyphen

0.17

Vest4

0.064

MutPred

0.57

Loss of catalytic residue at P80 (P = 0.0131);

MVP

0.17

MPC

0.44

ClinPred

0.53

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.072

gMVP

0.17

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