20-31968563-A-G

Variant names:

• chr20-31968563-A-G
• NM_001011718.2:c.388A>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001011718.2(XKR7):​c.388A>G​(p.Lys130Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 10/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: XKR7 NM_001011718.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.879

Genes affected

XKR7 (HGNC:23062): (XK related 7) 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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1430198).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XKR7	NM_001011718.2	c.388A>G	p.Lys130Glu	missense_variant	Exon 1 of 3	ENST00000562532.3	NP_001011718.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XKR7	ENST00000562532.3	c.388A>G	p.Lys130Glu	missense_variant	Exon 1 of 3	1	NM_001011718.2	ENSP00000477059.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.388A>G (p.K130E) alteration is located in exon 1 (coding exon 1) of the XKR7 gene. This alteration results from a A to G substitution at nucleotide position 388, causing the lysine (K) at amino acid position 130 to be replaced by a glutamic acid (E). 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	0.17
BayesDel_addAF	Benign	-0.059	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0028	T
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Benign	0.016	N
LIST_S2	Benign	0.65	T
M_CAP	Benign	0.0062	T
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L
PrimateAI	Pathogenic	0.80	T
Sift4G	Benign	0.81	T
Polyphen		0.77	P
Vest4		0.15
MutPred		0.44		Loss of ubiquitination at K130 (P = 0.0063);
MVP		0.043
ClinPred		0.44	T
GERP RS		4.1
Varity_R		0.13
gMVP		0.37

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: chr20-30556366;