chr20-31968663-C-T

Position:

• chr20-31968663-C-T

Variant summary

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

The NM_001011718.2(XKR7):​c.488C>T​(p.Pro163Leu) 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. 12/17 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: 1.14

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=0.084534794).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
XKR7	NM_001011718.2	c.488C>T	p.Pro163Leu	missense_variant	1/3	ENST00000562532.3	NP_001011718.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
XKR7	ENST00000562532.3	c.488C>T	p.Pro163Leu	missense_variant	1/3	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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 28, 2023

The c.488C>T (p.P163L) alteration is located in exon 1 (coding exon 1) of the XKR7 gene. This alteration results from a C to T substitution at nucleotide position 488, causing the proline (P) at amino acid position 163 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	0.083
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	17
DANN	Benign	0.94
DEOGEN2	Benign	0.0034	T
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.63
FATHMM_MKL	Benign	0.046	N
LIST_S2	Benign	0.59	T
M_CAP	Benign	0.0064	T
MetaRNN	Benign	0.085	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.095	N
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.58	T
Sift4G	Benign	0.39	T
Polyphen		0.27	B
Vest4		0.15
MutPred		0.47		Loss of glycosylation at P163 (P = 0.0037);
MVP		0.043
ClinPred		0.20	T
GERP RS		3.3
Varity_R		0.047
gMVP		0.30

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: chr20-30556466;