Genetic Variant FCGR3A:p.Arg115Pro (chr1-161544934-C-G) – 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_000569.8(FCGR3A):c.344G>C(p.Arg115Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,354 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R115Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FCGR3A
NM_000569.8 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.86

Variant links:

Genes affected

FCGR3A (HGNC:3619): (Fc gamma receptor IIIa) This gene encodes a receptor for the Fc portion of immunoglobulin G, and it is involved in the removal of antigen-antibody complexes from the circulation, as well as other responses, including antibody dependent cellular mediated cytotoxicity and antibody dependent enhancement of virus infections. This gene (FCGR3A) is highly similar to another nearby gene (FCGR3B) located on chromosome 1. The receptor encoded by this gene is expressed on natural killer (NK) cells as an integral membrane glycoprotein anchored through a transmembrane peptide, whereas FCGR3B is expressed on polymorphonuclear neutrophils (PMN) where the receptor is anchored through a phosphatidylinositol (PI) linkage. Mutations in this gene are associated with immunodeficiency 20, and have been linked to susceptibility to recurrent viral infections, susceptibility to systemic lupus erythematosus, and alloimmune neonatal neutropenia. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2020]

FCGR3A links:

ENSG00000289768 (HGNC:):

ENSG00000289768 links:

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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=0.17539966).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FCGR3A	NM_000569.8 link	c.344G>C	p.Arg115Pro	missense_variant	Exon 4 of 5	ENST00000443193.6	NP_000560.7	P08637

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FCGR3A	ENST00000443193.6 link	c.344G>C	p.Arg115Pro	missense_variant	Exon 4 of 5	1	NM_000569.8	ENSP00000392047.2		P08637
ENSG00000289768	ENST00000699402.1 link	c.341G>C	p.Arg114Pro	missense_variant	Exon 4 of 4			ENSP00000514363.1		A0A8V8TN80

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460354

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726464

show subpopulations

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.52

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.087

.;T;T;T;.;.

Eigen

Benign

-0.97

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.68

T;.;.;T;T;T

M_CAP

Benign

0.0074

MetaRNN

Benign

0.18

T;T;T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.4

.;L;L;L;.;.

PrimateAI

Benign

0.21

PROVEAN

Uncertain

-3.4

.;.;D;D;.;.

REVEL

Benign

0.069

Sift

Uncertain

0.024

.;.;D;D;.;.

Sift4G

Benign

0.090

.;T;T;T;.;.

Polyphen

0.98

.;D;D;D;.;.

Vest4

0.22

MVP

0.41

MPC

0.54

ClinPred

0.86

GERP RS

-4.0

Varity_R

0.71

gMVP

0.53

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over