4-76034815-T-G

Position:

• chr4-76034815-T-G

Variant summary

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

The NM_005409.5(CXCL11):​c.263A>C​(p.Lys88Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000713 in 1,402,902 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/24 in silico tools predict a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: CXCL11 NM_005409.5 missense, splice_region
• Scores: Splicing: ADA: 0.0002246
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.325

Genes affected

CXCL11 (HGNC:10638): (C-X-C motif chemokine ligand 11) Chemokines are a group of small (approximately 8 to 14 kD), mostly basic, structurally related molecules that regulate cell trafficking of various types of leukocytes through interactions with a subset of 7-transmembrane, G protein-coupled receptors. Chemokines also play fundamental roles in the development, homeostasis, and function of the immune system, and they have effects on cells of the central nervous system as well as on endothelial cells involved in angiogenesis or angiostasis. Chemokines are divided into 2 major subfamilies, CXC and CC. This antimicrobial gene is a CXC member of the chemokine superfamily. Its encoded protein induces a chemotactic response in activated T-cells and is the dominant ligand for CXC receptor-3. The gene encoding this protein contains 4 exons and at least three polyadenylation signals which might reflect cell-specific regulation of expression. IFN-gamma is a potent inducer of transcription of this gene. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2014]

ART3 (HGNC:725): (ADP-ribosyltransferase 3 (inactive)) This gene encodes an arginine-specific ADP-ribosyltransferase. The encoded protein catalyzes a reversible reaction which modifies proteins by the addition or removal of ADP-ribose to an arginine residue to regulate the function of the modified protein. An ADP-ribosyltransferase pseudogene is located on chromosome 11. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

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=0.08110815).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CXCL11	NM_005409.5	c.263A>C	p.Lys88Thr	missense_variant, splice_region_variant	4/4	ENST00000306621.8	NP_005400.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CXCL11	ENST00000306621.8	c.263A>C	p.Lys88Thr	missense_variant, splice_region_variant	4/4	1	NM_005409.5	ENSP00000306884	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.13e-7 AC: 1 AN: 1402902 Hom.: 0 Cov.: 29 AF XY: 0.00000143 AC XY: 1 AN XY: 699916

Gnomad4 AFR exome AF: 0.0000314

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Mar 06, 2023

The c.263A>C (p.K88T) alteration is located in exon 4 (coding exon 4) of the CXCL11 gene. This alteration results from a A to C substitution at nucleotide position 263, causing the lysine (K) at amino acid position 88 to be replaced by a threonine (T). 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	0.076
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.67
CADD	Benign	17
DANN	Benign	0.93
DEOGEN2	Benign	0.16	T;T
Eigen	Benign	-0.31
Eigen_PC	Benign	-0.46
FATHMM_MKL	Benign	0.063	N
LIST_S2	Benign	0.41	.;T
M_CAP	Benign	0.0038	T
MetaRNN	Benign	0.081	T;T
MetaSVM	Benign	-0.93	T
MutationTaster	Benign	0.91	N;N;N
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.96	N;N
REVEL	Benign	0.021
Sift	Benign	0.30	T;T
Sift4G	Benign	0.51	T;T
Polyphen		0.0050	B;B
Vest4		0.16
MutPred		0.49		Loss of methylation at K88 (P = 0.0088);Loss of methylation at K88 (P = 0.0088);
MVP		0.58
MPC		0.10
ClinPred		0.071	T
GERP RS		1.3
Varity_R		0.072
gMVP		0.43

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.00022
dbscSNV1_RF	Benign	0.0080
SpliceAI score (max)		0.32		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.32		Position offset: -3

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs768099347; hg19: chr4-76955968;