NM_001337.4:c.952C>A

Variant names:

• chr3-39265558-G-T
• NM_001337.4:c.952C>A

Variant summary

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

The NM_001337.4(CX3CR1):​c.952C>A​(p.Arg318Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict 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)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CX3CR1 NM_001337.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.30

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]

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=0.1616593).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CX3CR1	NM_001337.4	c.952C>A	p.Arg318Ser	missense_variant	Exon 2 of 2	ENST00000399220.3	NP_001328.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CX3CR1	ENST00000399220.3	c.952C>A	p.Arg318Ser	missense_variant	Exon 2 of 2	1	NM_001337.4	ENSP00000382166.3
CX3CR1	ENST00000358309.3	c.1048C>A	p.Arg350Ser	missense_variant	Exon 2 of 2	2		ENSP00000351059.3
CX3CR1	ENST00000541347.5	c.952C>A	p.Arg318Ser	missense_variant	Exon 2 of 2	4		ENSP00000439140.1
CX3CR1	ENST00000542107.5	c.952C>A	p.Arg318Ser	missense_variant	Exon 2 of 2	4		ENSP00000444928.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461894 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	9.0
DANN	Uncertain	0.97
DEOGEN2	Benign	0.15	T;T;T;.
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.55
FATHMM_MKL	Benign	0.19	N
LIST_S2	Benign	0.77	.;T;.;T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.16	T;T;T;T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.7	L;L;L;.
PrimateAI	Benign	0.21	T
PROVEAN	Benign	-1.3	N;N;N;N
REVEL	Benign	0.094
Sift	Benign	0.13	T;T;T;T
Sift4G	Benign	0.11	T;T;T;T
Polyphen		0.024	B;B;B;.
Vest4		0.15
MutPred		0.50		Gain of disorder (P = 0.0559);Gain of disorder (P = 0.0559);Gain of disorder (P = 0.0559);.;
MVP		0.63
MPC		0.50
ClinPred		0.19	T
GERP RS		3.9
Varity_R		0.17
gMVP		0.35

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-39307049;