1-149791332-C-G

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000566.4(FCGR1A):c.940C>G(p.Arg314Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000943 in 1,590,128 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R314C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000048 ( 0 hom., cov: 26)

Exomes 𝑓: 0.0000055 ( 1 hom. )

Consequence

FCGR1A
NM_000566.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.44

Variant links:

Genes affected

FCGR1A (HGNC:3613): (Fc gamma receptor Ia) This gene encodes a protein that plays an important role in the immune response. This protein is a high-affinity Fc-gamma receptor. The gene is one of three related gene family members located on chromosome 1. [provided by RefSeq, Jul 2008]

FCGR1A links:

ENSG00000233030 (HGNC:):

ENSG00000233030 links:

H2BC18 (HGNC:24700): (H2B clustered histone 18) Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. This structure consists of approximately 146 bp of DNA wrapped around a nucleosome, an octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures. This gene encodes a replication-dependent histone that is a member of the histone H2B family and is found in a histone cluster on chromosome 1. [provided by RefSeq, Aug 2015]

H2BC18 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.057468414).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FCGR1A	NM_000566.4 link	c.940C>G	p.Arg314Gly	missense_variant	Exon 6 of 6	ENST00000369168.5	NP_000557.1	P12314-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FCGR1A	ENST00000369168.5 link	c.940C>G	p.Arg314Gly	missense_variant	Exon 6 of 6	1	NM_000566.4	ENSP00000358165.4		P12314-1

Frequencies

GnomAD3 genomes

AF:

0.0000480

AC:

AN:

145696

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000132

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000676

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:

0.0000150

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000285

AC:

AN:

245996

Hom.:

AF XY:

0.00

AC XY:

AN XY:

133310

show subpopulations

Gnomad AFR exome

AF:

0.000471

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:

0.00000554

AC:

AN:

1444338

Hom.:

Cov.:

AF XY:

0.00000278

AC XY:

AN XY:

718646

show subpopulations

Gnomad4 AFR exome

AF:

0.000123

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:

0.00000273

Gnomad4 OTH exome

AF:

0.0000168

GnomAD4 genome

AF:

0.0000480

AC:

AN:

145790

Hom.:

Cov.:

AF XY:

0.0000281

AC XY:

AN XY:

71186

show subpopulations

Gnomad4 AFR

AF:

0.000131

Gnomad4 AMR

AF:

0.0000675

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000150

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000529

ESP6500AA

AF:

0.000944

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000501

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 13, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.940C>G (p.R314G) alteration is located in exon 6 (coding exon 6) of the FCGR1A gene. This alteration results from a C to G substitution at nucleotide position 940, causing the arginine (R) at amino acid position 314 to be replaced by a glycine (G). 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

Benign

0.11

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.57

CADD

Benign

5.7

DANN

Benign

0.83

DEOGEN2

Benign

0.021

T;T

Eigen

Benign

-0.83

Eigen_PC

Benign

-0.91

FATHMM_MKL

Benign

0.019

LIST_S2

Benign

0.47

T;T

M_CAP

Benign

0.0037

MetaRNN

Benign

0.057

T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.1

.;L

PrimateAI

Benign

0.24

PROVEAN

Benign

-1.1

N;N

REVEL

Benign

0.065

Sift

Benign

0.19

T;T

Sift4G

Benign

0.29

T;T

Polyphen

0.34

.;B

Vest4

0.12

MVP

0.34

ClinPred

0.057

GERP RS

1.1

Varity_R

0.065

gMVP

0.11

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

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