1-149791413-C-T

Position:

chr1-149791413-C-T

Variant summary

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

The NM_000566.4(FCGR1A):c.1021C>T(p.Leu341Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000437 in 1,602,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000014 ( 0 hom., cov: 26)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

FCGR1A
NM_000566.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0220

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 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=0.10826939).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FCGR1A	NM_000566.4 link	c.1021C>T	p.Leu341Phe	missense_variant	6/6	ENST00000369168.5	NP_000557.1	P12314-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FCGR1A	ENST00000369168.5 link	c.1021C>T	p.Leu341Phe	missense_variant	6/6	1	NM_000566.4	ENSP00000358165.4		P12314-1

Frequencies

GnomAD3 genomes

AF:

0.0000136

AC:

AN:

146778

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000299

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000829

AC:

AN:

241284

Hom.:

AF XY:

0.00

AC XY:

AN XY:

131198

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.0000183

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000344

AC:

AN:

1455282

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723910

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:

0.00000361

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000136

AC:

AN:

146778

Hom.:

Cov.:

AF XY:

0.0000140

AC XY:

AN XY:

71640

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000299

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 12, 2022

The c.1021C>T (p.L341F) alteration is located in exon 6 (coding exon 6) of the FCGR1A gene. This alteration results from a C to T substitution at nucleotide position 1021, causing the leucine (L) at amino acid position 341 to be replaced by a phenylalanine (F). 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

0.067

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.74

CADD

Benign

6.7

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.94

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.73

M_CAP

Benign

0.0020

MetaRNN

Benign

0.11

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.68

REVEL

Benign

0.067

Sift

Benign

0.31

Sift4G

Benign

0.16

Polyphen

0.95

Vest4

0.030

MutPred

0.19

Gain of relative solvent accessibility (P = 0.0999);

MVP

0.23

ClinPred

0.16

GERP RS

-1.8

Varity_R

0.040

gMVP

0.025

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