Variant chr8-70733837-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001011720.2(XKR9):c.535A>G(p.Thr179Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,446,164 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T179S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

XKR9
NM_001011720.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.17

Variant links:

Genes affected

XKR9 (HGNC:20937): (XK related 9) Predicted to enable phospholipid scramblase activity. Predicted to be involved in apoptotic process involved in development; engulfment of apoptotic cell; and 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]

XKR9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2960101).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
XKR9	NM_001011720.2 linkuse as main transcript	c.535A>G	p.Thr179Ala	missense_variant	5/5	ENST00000408926.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
XKR9	ENST00000408926.8 linkuse as main transcript	c.535A>G	p.Thr179Ala	missense_variant	5/5	1	NM_001011720.2	P1
XKR9	ENST00000520030.5 linkuse as main transcript	c.535A>G	p.Thr179Ala	missense_variant	6/6	1		P1
XKR9	ENST00000520092.5 linkuse as main transcript	c.*275A>G		3_prime_UTR_variant, NMD_transcript_variant	6/6	2
XKR9	ENST00000520273.1 linkuse as main transcript	n.352+26684A>G		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.91e-7

AC:

AN:

1446164

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

718558

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

9.03e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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 31, 2023

The c.535A>G (p.T179A) alteration is located in exon 5 (coding exon 3) of the XKR9 gene. This alteration results from a A to G substitution at nucleotide position 535, causing the threonine (T) at amino acid position 179 to be replaced by an alanine (A). 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

0.23

BayesDel_addAF

Uncertain

0.027

BayesDel_noAF

Benign

-0.20

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.013

T;T

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.68

.;T

M_CAP

Benign

0.024

MetaRNN

Benign

0.30

T;T

MetaSVM

Benign

-0.48

MutationAssessor

Uncertain

2.6

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.2

N;N

REVEL

Uncertain

0.31

Sift

Uncertain

0.029

D;D

Sift4G

Benign

0.15

T;T

Polyphen

0.99

D;D

Vest4

0.10

MutPred

0.54

Loss of glycosylation at T179 (P = 0.0757);Loss of glycosylation at T179 (P = 0.0757);

MVP

0.74

MPC

0.0048

ClinPred

0.94

GERP RS

4.7

Varity_R

0.40

gMVP

0.26

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over