Variant 3-39265558-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001337.4(CX3CR1):c.952C>T(p.Arg318Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000105 in 1,614,154 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

CX3CR1
NM_001337.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.30

Variant links:

Genes affected

CX3CR1 (HGNC:2558): (C-X3-C motif chemokine receptor 1) Fractalkine is a transmembrane protein and chemokine involved in the adhesion and migration of leukocytes. The protein encoded by this gene is a receptor for fractalkine. The encoded protein also is a coreceptor for HIV-1, and some variations in this gene lead to increased susceptibility to HIV-1 infection and rapid progression to AIDS. Four transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jan 2010]

CX3CR1 links:

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ACMG classification

Classification made for transcript

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=0.067084074).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CX3CR1	NM_001337.4 linkuse as main transcript	c.952C>T	p.Arg318Cys	missense_variant	2/2	ENST00000399220.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CX3CR1	ENST00000399220.3 linkuse as main transcript	c.952C>T	p.Arg318Cys	missense_variant	2/2	1	NM_001337.4	P1	P49238-1
CX3CR1	ENST00000358309.3 linkuse as main transcript	c.1048C>T	p.Arg350Cys	missense_variant	2/2	2			P49238-4
CX3CR1	ENST00000541347.5 linkuse as main transcript	c.952C>T	p.Arg318Cys	missense_variant	2/2	4		P1	P49238-1
CX3CR1	ENST00000542107.5 linkuse as main transcript	c.952C>T	p.Arg318Cys	missense_variant	2/2	4		P1	P49238-1

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.000118

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000148

AC:

AN:

249538

Hom.:

AF XY:

0.000133

AC XY:

AN XY:

135374

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000405

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000159

Gnomad OTH exome

AF:

0.000660

GnomAD4 exome

AF:

0.000105

AC:

154

AN:

1461894

Hom.:

Cov.:

AF XY:

0.0000935

AC XY:

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000514

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000103

Gnomad4 OTH exome

AF:

0.000215

GnomAD4 genome

AF:

0.0000985

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74438

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.0000956

Hom.:

Bravo

AF:

0.0000831

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000240

AC:

ExAC

AF:

0.0000910

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 16, 2022

The c.952C>T (p.R318C) alteration is located in exon 2 (coding exon 1) of the CX3CR1 gene. This alteration results from a C to T substitution at nucleotide position 952, causing the arginine (R) at amino acid position 318 to be replaced by a cysteine (C). 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

-0.41

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

T;T;T;.

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.29

FATHMM_MKL

Benign

0.11

LIST_S2

Uncertain

0.88

.;D;.;D

M_CAP

Benign

0.015

MetaRNN

Benign

0.067

T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.0

M;M;M;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.23

PROVEAN

Benign

-0.27

N;N;N;N

REVEL

Benign

0.11

Sift

Uncertain

0.023

D;D;D;T

Sift4G

Uncertain

0.017

D;D;D;T

Polyphen

0.99

D;D;D;.

Vest4

0.090

MVP

0.66

MPC

0.37

ClinPred

0.12

GERP RS

3.9

Varity_R

0.12

gMVP

0.38

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