3-46373394-C-G

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001394783.1(CCR5):c.492C>G(p.Ile164Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,612,246 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 (no stars).

Frequency

Genomes: 𝑓 0.000040 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

CCR5
NM_001394783.1 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: -1.37

Variant links:

Genes affected

CCR5 (HGNC:1606): (C-C motif chemokine receptor 5) This gene encodes a member of the beta chemokine receptor family, which is predicted to be a seven transmembrane protein similar to G protein-coupled receptors. This protein is expressed by T cells and macrophages, and is known to be an important co-receptor for macrophage-tropic virus, including HIV, to enter host cells. Defective alleles of this gene have been associated with the HIV infection resistance. The ligands of this receptor include monocyte chemoattractant protein 2 (MCP-2), macrophage inflammatory protein 1 alpha (MIP-1 alpha), macrophage inflammatory protein 1 beta (MIP-1 beta) and regulated on activation normal T expressed and secreted protein (RANTES). Expression of this gene was also detected in a promyeloblastic cell line, suggesting that this protein may play a role in granulocyte lineage proliferation and differentiation. This gene is located at the chemokine receptor gene cluster region. An allelic polymorphism in this gene results in both functional and non-functional alleles; the reference genome represents the functional allele. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2015]

CCR5 links:

CCR5AS (HGNC:54398): (CCR5 antisense RNA)

CCR5AS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0989531).

BS2

High AC in GnomAd at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CCR5	NM_001394783.1 linkuse as main transcript	c.492C>G	p.Ile164Met	missense_variant	2/2	ENST00000292303.5
CCR5AS	NR_125406.1 linkuse as main transcript	n.392-1977G>C		intron_variant, non_coding_transcript_variant
CCR5	NM_000579.4 linkuse as main transcript	c.492C>G	p.Ile164Met	missense_variant	3/3
CCR5	NM_001100168.2 linkuse as main transcript	c.492C>G	p.Ile164Met	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
CCR5	ENST00000292303.5 linkuse as main transcript	c.492C>G	p.Ile164Met	missense_variant	2/2	1	NM_001394783.1	P1
CCR5AS	ENST00000701879.1 linkuse as main transcript	n.174-1977G>C		intron_variant, non_coding_transcript_variant
CCR5	ENST00000445772.1 linkuse as main transcript	c.492C>G	p.Ile164Met	missense_variant	1/1			P1
CCR5AS	ENST00000451485.2 linkuse as main transcript	n.392-1977G>C		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000396

AC:

AN:

151630

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000328

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:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000358

AC:

AN:

251256

Hom.:

AF XY:

0.0000295

AC XY:

AN XY:

135798

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000890

AC:

AN:

1460616

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

726618

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000990

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000396

AC:

AN:

151630

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

74042

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000328

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000148

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Department of Pathology and Laboratory Medicine, Sinai Health System

The CCR5 p.Ile164Met variant was identified in the literature however the frequency of this variant in an affected population was not provided. The variant was also identified in dbSNP (ID: rs1800942) and LOVD 3.0 (Effect on protein unknown). The variant was not identified in ClinVar or Cosmic. The variant was identified in control databases in 9 of 251256 chromosomes at a frequency of 0.000036 (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: European (non-Finnish) in 8 of 113576 chromosomes (freq: 0.00007) and Latino in 1 of 34586 chromosomes (freq: 0.000029); it was not observed in the African, Ashkenazi Jewish, East Asian, European (Finnish), Other, and South Asian populations. In an in vitro study, it was found that the variant may be capable of disrupting ribosomal frameshifting activity (Belew_2014_PMID: 25043019). The p.Ile164 residue is not conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; however, this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.56

Cadd

Benign

9.5

Dann

Benign

0.97

DEOGEN2

Benign

0.073

T;T

Eigen

Benign

-0.47

Eigen_PC

Benign

-0.58

FATHMM_MKL

Benign

0.11

M_CAP

Benign

0.012

MetaRNN

Benign

0.099

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.8

L;L

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.3

N;N

REVEL

Benign

0.068

Sift

Uncertain

0.0030

D;D

Sift4G

Benign

0.084

T;T

Polyphen

0.56

P;P

Vest4

0.14

MVP

0.24

ClinPred

0.11

GERP RS

0.28

Varity_R

0.43

gMVP

0.56

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