8-55453018-T-A

Position:

• chr8-55453018-T-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_052898.2(XKR4):​c.1007-70263T>A variant causes a intron 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: XKR4 NM_052898.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.237

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]

SBF1P1 (HGNC:31098): (SET binding factor 1 pseudogene 1)

ACMG classification

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 (BayesDel_noAF=-0.92).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
XKR4	NM_052898.2	c.1007-70263T>A		intron_variant		ENST00000327381.7
SBF1P1	NR_027765.2	n.2304A>T		non_coding_transcript_exon_variant	1/1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
XKR4	ENST00000327381.7	c.1007-70263T>A		intron_variant		1	NM_052898.2	P1
SBF1P1	ENST00000444527.2	n.2122A>T		non_coding_transcript_exon_variant	1/1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 2

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	7.9
DANN	Benign	0.24

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

Other links and lift over

dbSNP: rs867531; hg19: chr8-56365578; COSMIC: COSV59305178;