chr3-46370771-C-T

Position:

• chr3-46370771-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_000579.4(CCR5):​c.-229C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.058 in 152,240 control chromosomes in the GnomAD database, including 834 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.058 (834 hom., cov: 33)
  • Failed GnomAD Quality Control
• Consequence: CCR5 NM_000579.4 5_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter P:1 B:1
• Conservation: PhyloP100: -0.478

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]

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

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 3-46370771-C-T is Benign according to our data. Variant chr3-46370771-C-T is described in ClinVar as [Benign]. Clinvar id is 8190.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.2 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCR5	NM_000579.4	c.-229C>T		5_prime_UTR_variant	2/3		NP_000570.1
CCR5	NM_001100168.2	c.-65-164C>T		intron_variant			NP_001093638.1
CCR5AS	NR_125406.2	n.572+473G>A		intron_variant
CCR5AS	NR_185891.1	n.344+473G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCR5AS	ENST00000451485.2	n.565+473G>A		intron_variant		3
CCR5AS	ENST00000701879.1	n.347+473G>A		intron_variant

Frequencies

GnomAD3 genomes AF: 0.0580 AC: 8823 AN: 152122 Hom.: 835 Cov.: 33

Gnomad AFR AF: 0.204

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0166

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000621

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000367

Gnomad OTH AF: 0.0383

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0580 AC: 8831 AN: 152240 Hom.: 834 Cov.: 33 AF XY: 0.0555 AC XY: 4127 AN XY: 74422

Gnomad4 AFR AF: 0.204

Gnomad4 AMR AF: 0.0166

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000621

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000368

Gnomad4 OTH AF: 0.0379

Alfa AF: 0.0446 Hom.: 64

Bravo AF: 0.0667

Asia WGS AF: 0.0110 AC: 40 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Pathogenic:1 Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Human immunodeficiency virus type 1, increased perinatal transmission of Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Dec 01, 1999

- -

not specified Benign:1

Benign, criteria provided, single submitter

research

H3Africa Consortium

Oct 28, 2020

While the frequency of the alternate allele in gnoMAD v2.0.2 is 0.232, its frequency in African populations is >5%. This suggests that previous classifications of this variant as pathogenic are in error. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	1.8
DANN	Benign	0.59

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs41469351; hg19: chr3-46412262;