1-161629785-G-C

Variant names:

• chr1-161629785-G-C
• NM_001244753.2:c.312C>G
• FCGR3B p.Val104Val

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001244753.2(FCGR3B):​c.312C>G​(p.Val104Val) variant causes a synonymous 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. V104V) has been classified as Benign.

• Frequency: Genomes: not found (cov: 10)
• Consequence: FCGR3B NM_001244753.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.273
• Publications: 0 publications found

Genes affected

FCGR3B (HGNC:3620): (Fc gamma receptor IIIb) The protein encoded by this gene is a low affinity receptor for the Fc region of gamma immunoglobulins (IgG). The encoded protein acts as a monomer and can bind either monomeric or aggregated IgG. This gene may function to capture immune complexes in the peripheral circulation. Several transcript variants encoding different isoforms have been found for this gene. A highly-similar gene encoding a related protein is also found on chromosome 1. [provided by RefSeq, Aug 2012]

FCGR3B Gene-Disease associations (from GenCC):

• systemic lupus erythematosus

  Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000289768 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (REVEL=0.034).
• BP7: Synonymous conserved (PhyloP=0.273 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001244753.2. 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
	FCGR3B	NM_001244753.2	MANE Select	c.312C>G	p.Val104Val	synonymous	Exon 3 of 5	NP_001231682.2	A0A3B3ISU3
	FCGR3B	NM_000570.5		c.312C>G	p.Val104Val	synonymous	Exon 4 of 6	NP_000561.3	O75015
	FCGR3B	NM_001271035.2		c.309C>G	p.Val103Val	synonymous	Exon 3 of 5	NP_001257964.2	H0Y4U3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FCGR3B	ENST00000650385.1	MANE Select	c.312C>G	p.Val104Val	synonymous	Exon 3 of 5	ENSP00000497461.1	A0A3B3ISU3
	ENSG00000289768	ENST00000699402.1		c.40+1270C>G		intron	N/A	ENSP00000514363.1	A0A8V8TN80
	FCGR3B	ENST00000367964.6	TSL:5	c.312C>G	p.Val104Val	synonymous	Exon 4 of 6	ENSP00000356941.2	O75015

Frequencies

GnomAD3 genomes Cov.: 10

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 10

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.94
CADD	Benign	6.8
DANN	Benign	0.63
PhyloP100		0.27
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr1-161599575;