chr1-161544882-C-A

Variant names:

• chr1-161544882-C-A
• rs1677313303
• NM_000569.8:c.396G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000569.8(FCGR3A):​c.396G>T​(p.Lys132Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: FCGR3A NM_000569.8 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.670
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• autosomal recessive primary immunodeficiency with defective spontaneous natural killer cell cytotoxicity

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000289768 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18804711).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000569.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FCGR3A	NM_000569.8	MANE Select	c.396G>T	p.Lys132Asn	missense	Exon 4 of 5	NP_000560.7
	FCGR3A	NM_001127592.2		c.708G>T	p.Lys236Asn	missense	Exon 4 of 5	NP_001121064.2	P08637
	FCGR3A	NM_001127593.1		c.396G>T	p.Lys132Asn	missense	Exon 5 of 6	NP_001121065.1	P08637

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FCGR3A	ENST00000443193.6	TSL:1 MANE Select	c.396G>T	p.Lys132Asn	missense	Exon 4 of 5	ENSP00000392047.2	P08637
	ENSG00000289768	ENST00000699402.1		c.393G>T	p.Lys131Asn	missense	Exon 4 of 4	ENSP00000514363.1	A0A8V8TN80
	FCGR3A	ENST00000946731.1		c.471G>T	p.Lys157Asn	missense	Exon 5 of 6	ENSP00000616790.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	17
DANN	Uncertain	1.0
DEOGEN2	Benign	0.10	T
Eigen	Benign	-0.48
Eigen_PC	Benign	-0.62
FATHMM_MKL	Benign	0.037	N
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.0076	T
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		-0.67
PrimateAI	Benign	0.39	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.017
Sift	Benign	0.090	T
Sift4G	Benign	0.083	T
Polyphen		1.0	D
Vest4		0.20
MVP		0.39
MPC		0.63
ClinPred		0.93	D
GERP RS		1.2
Varity_R		0.36
gMVP		0.30
Mutation Taster		=71/29	polymorphism

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

Other links and lift over

dbSNP: rs1677313303; hg19: chr1-161514672;