Genetic Variant FCMR:p.Ser305Trp (chr1-206909796-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_005449.5(FCMR):c.914C>G(p.Ser305Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000395 in 1,441,316 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

FCMR
NM_005449.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.10

Publications

0 publications found

Variant links:

Genes affected

FCMR (HGNC:14315): (Fc mu receptor) Fc receptors specifically bind to the Fc region of immunoglobulins (Igs) to mediate the unique functions of each Ig class. FAIM3 encodes an Fc receptor for IgM (see MIM 147020) (Kubagawa et al., 2009 [PubMed 19858324]; Shima et al., 2010 [PubMed 20042454]).[supplied by OMIM, Jul 2010]

FCMR links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07274723).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FCMR	NM_005449.5 link	c.914C>G	p.Ser305Trp	missense_variant	Exon 6 of 8	ENST00000367091.8	NP_005440.1	O60667-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FCMR	ENST00000367091.8 link	c.914C>G	p.Ser305Trp	missense_variant	Exon 6 of 8	1	NM_005449.5	ENSP00000356058.3		O60667-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000820

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000519

AC:

AN:

38530

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00140

Gnomad AMR exome

AF:

0.000164

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.0000163

AC:

AN:

1288992

Hom.:

Cov.:

AF XY:

0.0000111

AC XY:

AN XY:

632228

show subpopulations

African (AFR)

AF:

0.000676

AC:

AN:

25146

American (AMR)

AF:

0.000113

AC:

AN:

17628

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20538

East Asian (EAS)

AF:

0.00

AC:

AN:

28224

South Asian (SAS)

AF:

0.00

AC:

AN:

64448

European-Finnish (FIN)

AF:

0.00

AC:

AN:

37226

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4700

European-Non Finnish (NFE)

AF:

9.64e-7

AC:

AN:

1037820

Other (OTH)

AF:

0.0000188

AC:

AN:

53262

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000236

AC:

AN:

152324

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.000818

AC:

AN:

41582

American (AMR)

AF:

0.0000653

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.529

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.000242

ExAC

AF:

0.0000425

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 15, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.914C>G (p.S305W) alteration is located in exon 6 (coding exon 6) of the FCMR gene. This alteration results from a C to G substitution at nucleotide position 914, causing the serine (S) at amino acid position 305 to be replaced by a tryptophan (W). 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

0.14

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.47

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.18

T;.

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.29

LIST_S2

Benign

0.73

T;T

M_CAP

Benign

0.075

MetaRNN

Benign

0.073

T;T

MetaSVM

Benign

-1.0

PhyloP100

1.1

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-1.9

N;N

REVEL

Benign

0.10

Sift

Benign

0.093

T;T

Sift4G

Uncertain

0.023

D;D

Polyphen

1.0

D;.

Vest4

0.49

MutPred

0.14

Loss of phosphorylation at S305 (P = 0.0017);.;

MVP

0.40

MPC

0.93

ClinPred

0.062

GERP RS

3.1

Varity_R

0.050

gMVP

0.15

Mutation Taster

=93/7

polymorphism

(source)

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

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chr1-206909796-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over