Genetic Variant C5AR2:p.His75Gln (chr19-47341024-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001271749.2(C5AR2):c.225C>A(p.His75Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000933 in 1,608,382 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

C5AR2
NM_001271749.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.741

Variant links:

Genes affected

C5AR2 (HGNC:4527): (complement C5a receptor 2) This gene encodes a G-protein coupled receptor 1 family member involved in the complement system of the innate immune response. Unlike classical G-protein coupled receptors, the encoded protein does not associate with intracellular G-proteins. It may instead modulate signal transduction through the beta-arrestin pathway, and may alternatively act as a decoy receptor. This gene may be involved in coronary artery disease and in the pathogenesis of sepsis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2012]

C5AR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.2558208).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C5AR2	NM_001271749.2 link	c.225C>A	p.His75Gln	missense_variant	Exon 2 of 2	ENST00000595464.3	NP_001258678.1	Q9P296
C5AR2	NM_001271750.2 link	c.225C>A	p.His75Gln	missense_variant	Exon 2 of 2		NP_001258679.1	Q9P296
C5AR2	NM_018485.3 link	c.225C>A	p.His75Gln	missense_variant	Exon 2 of 2		NP_060955.1	Q9P296

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
C5AR2	ENST00000595464.3 link	c.225C>A	p.His75Gln	missense_variant	Exon 2 of 2	1	NM_001271749.2	ENSP00000472620.1		Q9P296
C5AR2	ENST00000600626.1 link	c.225C>A	p.His75Gln	missense_variant	Exon 2 of 2	1		ENSP00000471184.1		Q9P296

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD3 exomes

AF:

0.00000408

AC:

AN:

245364

Hom.:

AF XY:

0.00

AC XY:

AN XY:

133140

show subpopulations

Gnomad AFR exome

AF:

0.0000619

Gnomad AMR exome

AF:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000961

AC:

AN:

1456130

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

724642

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.0000108

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74386

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 04, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.225C>A (p.H75Q) alteration is located in exon 2 (coding exon 1) of the C5AR2 gene. This alteration results from a C to A substitution at nucleotide position 225, causing the histidine (H) at amino acid position 75 to be replaced by a glutamine (Q). 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

Uncertain

0.44

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.27

T;T

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.47

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.48

.;T

M_CAP

Benign

0.0073

MetaRNN

Benign

0.26

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.3

M;M

PrimateAI

Benign

0.37

Sift4G

Uncertain

0.055

T;T

Polyphen

0.26

B;B

Vest4

0.24

MutPred

0.67

Gain of MoRF binding (P = 0.0911);Gain of MoRF binding (P = 0.0911);

MVP

0.49

MPC

0.31

ClinPred

0.16

GERP RS

0.87

Varity_R

0.14

gMVP

0.52

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