Genetic Variant FCRLB:p.Val190Met (chr1-161726081-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001002901.4(FCRLB):c.568G>A(p.Val190Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000746 in 1,607,874 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

FCRLB
NM_001002901.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.33

Variant links:

Genes affected

FCRLB (HGNC:26431): (Fc receptor like B) FCRL2 belongs to the Fc receptor family. Fc receptors are involved in phagocytosis, antibody-dependent cell cytotoxicity, immediate hypersensitivity, and transcytosis of immunoglobulins via their ability to bind immunoglobulin (Ig) constant regions (Chikaev et al., 2005 [PubMed 15676285]).[supplied by OMIM, Mar 2008]

FCRLB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2781159).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FCRLB	NM_001002901.4 link	c.568G>A	p.Val190Met	missense_variant	Exon 6 of 8	ENST00000367948.7	NP_001002901.1	Q6BAA4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FCRLB	ENST00000367948.7 link	c.568G>A	p.Val190Met	missense_variant	Exon 6 of 8	1	NM_001002901.4	ENSP00000356925.2		Q6BAA4-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152282

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000964

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000162

AC:

AN:

247050

Hom.:

AF XY:

0.00000748

AC XY:

AN XY:

133650

show subpopulations

Gnomad AFR exome

AF:

0.0000624

Gnomad AMR exome

AF:

0.0000582

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:

0.00000899

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000481

AC:

AN:

1455592

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

722978

show subpopulations

Gnomad4 AFR exome

AF:

0.000120

Gnomad4 AMR exome

AF:

0.0000450

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:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152282

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.0000964

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 27, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.568G>A (p.V190M) alteration is located in exon 4 (coding exon 4) of the FCRLB gene. This alteration results from a G to A substitution at nucleotide position 568, causing the valine (V) at amino acid position 190 to be replaced by a methionine (M). 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

Pathogenic

0.68

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.42

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.71

D;.;.;.;.

Eigen

Uncertain

0.31

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Benign

0.62

LIST_S2

Uncertain

0.87

D;D;D;D;D

M_CAP

Benign

0.037

MetaRNN

Benign

0.28

T;T;T;T;T

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.8

L;L;.;L;.

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-2.6

D;N;N;N;N

REVEL

Benign

0.24

Sift

Uncertain

0.0010

D;D;D;D;D

Sift4G

Uncertain

0.0050

D;D;D;D;D

Polyphen

0.95

P;D;D;D;D

Vest4

0.56

MVP

0.45

MPC

1.7

ClinPred

0.85

GERP RS

3.4

Varity_R

0.28

gMVP

0.46

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