1-168542040-G-T

Position:

• chr1-168542040-G-T

Variant summary

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

The NM_003175.4(XCL2):​c.129C>A​(p.Ser43Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,452,946 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: XCL2 NM_003175.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -2.16

Genes affected

XCL2 (HGNC:10646): (X-C motif chemokine ligand 2) Predicted to enable CCR chemokine receptor binding activity and chemokine activity. Predicted to be involved in several processes, including cellular response to cytokine stimulus; leukocyte chemotaxis; and positive regulation of T cell chemotaxis. Predicted to be located in extracellular region. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

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 (MetaRNN=0.059466183).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
XCL2	NM_003175.4	c.129C>A	p.Ser43Arg	missense_variant	2/3	ENST00000367819.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
XCL2	ENST00000367819.3	c.129C>A	p.Ser43Arg	missense_variant	2/3	1	NM_003175.4	P1

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1452946 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 722864

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.: 30

Bravo AF: 0.00000378

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

Apr 26, 2023

The c.129C>A (p.S43R) alteration is located in exon 2 (coding exon 2) of the XCL2 gene. This alteration results from a C to A substitution at nucleotide position 129, causing the serine (S) at amino acid position 43 to be replaced by an arginine (R). 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	0.19
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.75
CADD	Benign	0.014
DANN	Benign	0.69
DEOGEN2	Benign	0.0050	T
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.0027	N
LIST_S2	Benign	0.32	T
M_CAP	Benign	0.0031	T
MetaRNN	Benign	0.059	T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	0.50	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.31	T
PROVEAN	Benign	0.060	N
REVEL	Benign	0.010
Sift	Benign	0.50	T
Sift4G	Benign	0.20	T
Polyphen		0.072	B
Vest4		0.21
MutPred		0.46		Gain of MoRF binding (P = 0.0134);
MVP		0.12
MPC		0.21
ClinPred		0.051	T
GERP RS		-5.0
Varity_R		0.060
gMVP		0.14

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: rs777325495; hg19: chr1-168511278; COSMIC: COSV63194123; COSMIC: COSV63194123;