16-57382386-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_002996.6(CX3CL1):c.548C>T(p.Thr183Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000168 in 1,611,636 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/23 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

CX3CL1
NM_002996.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.974

Variant links:

Genes affected

CX3CL1 (HGNC:10647): (C-X3-C motif chemokine ligand 1) This gene belongs to the CX3C subgroup of chemokines, characterized by the number of amino acids located between the conserved cysteine residues. This is the only member of the CX3C subgroup, which contains three amino acids between cysteine residues, resulting in a Cys-X-X-X-Cys configuration. The encoded protein contains an extended mucin-like stalk with a chemokine domain on top, and exists in both a membrane-anchored form where it acts as a binding molecule, or, in soluble form, as a chemotactic cytokine. The mature form of this protein can be cleaved at the cell surface, yielding different soluble forms that can interact with the G-protein coupled receptor, C-X3-C motif chemokine receptor 1 gene product. This gene plays a role in a wide range of diseases, including cancer, vasculitis, neuropathies, atherosclerosis, inflammatory diseases, and in human immunodeficiency virus infections. [provided by RefSeq, Sep 2017]

CX3CL1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM1

In a glycosylation_site O-linked (GalNAc...) threonine (size 0) in uniprot entity X3CL1_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.098262995).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CX3CL1	NM_002996.6 link	c.548C>T	p.Thr183Met	missense_variant	Exon 3 of 3	ENST00000006053.7	NP_002987.1	P78423A0N0N7
CX3CL1	NM_001304392.3 link	c.293C>T	p.Thr98Met	missense_variant	Exon 2 of 2		NP_001291321.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CX3CL1	ENST00000006053.7 link	c.548C>T	p.Thr183Met	missense_variant	Exon 3 of 3	1	NM_002996.6	ENSP00000006053.6	P78423
CX3CL1	ENST00000565912.1 link	c.434C>T	p.Thr145Met	missense_variant	Exon 2 of 2	1		ENSP00000464114.1	J3QRA1
CX3CL1	ENST00000563383.1 link	c.566C>T	p.Thr189Met	missense_variant	Exon 3 of 3	5		ENSP00000456830.1	H3BSR6
CX3CL1	ENST00000564948.1 link	c.*259C>T		3_prime_UTR_variant	Exon 2 of 2	3		ENSP00000457996.1	H3BV86

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000121

AC:

AN:

247132

AF XY:

0.0000223

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000110

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1459492

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

726148

show subpopulations

Gnomad4 AFR exome

AF:

0.00

AC:

AN:

33480

Gnomad4 AMR exome

AF:

0.00

AC:

AN:

44714

Gnomad4 ASJ exome

AF:

0.00

AC:

AN:

26130

Gnomad4 EAS exome

AF:

0.000126

AC:

AN:

39698

Gnomad4 SAS exome

AF:

0.0000116

AC:

AN:

86234

Gnomad4 FIN exome

AF:

0.00

AC:

AN:

51130

Gnomad4 NFE exome

AF:

0.0000153

AC:

AN:

1111960

Gnomad4 Remaining exome

AF:

0.0000331

AC:

AN:

60378

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74320

show subpopulations

Gnomad4 AFR

AF:

0.0000241

AC:

0.0000241371

AN:

0.0000241371

Gnomad4 AMR

AF:

0.0000654

AC:

0.0000654279

AN:

0.0000654279

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.00

AC:

AN:

Gnomad4 SAS

AF:

0.00

AC:

AN:

Gnomad4 FIN

AF:

0.00

AC:

AN:

Gnomad4 NFE

AF:

0.00

AC:

AN:

Gnomad4 OTH

AF:

0.00

AC:

AN:

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000302

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 26, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.548C>T (p.T183M) alteration is located in exon 3 (coding exon 3) of the CX3CL1 gene. This alteration results from a C to T substitution at nucleotide position 548, causing the threonine (T) at amino acid position 183 to be replaced by a methionine (M). 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

0.11

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.66

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.43

T;T;.

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.66

FATHMM_MKL

Benign

0.16

LIST_S2

Benign

0.61

T;T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.098

T;T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

1.4

L;.;.

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.7

N;N;.

REVEL

Benign

0.059

Sift

Uncertain

0.029

D;D;.

Sift4G

Benign

0.091

T;T;T

Polyphen

0.81

P;.;.

Vest4

0.23

MVP

0.043

MPC

0.80

ClinPred

0.11

GERP RS

2.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.030

gMVP

0.28

Mutation Taster

=91/9

polymorphism

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over