chr1-240258002-C-A

Variant names:

Variant summary

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

The NM_020066.5(FMN2):c.4123C>A(p.Leu1375Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000341 in 1,612,062 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00035 ( 0 hom. )

Consequence

FMN2
NM_020066.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 2.71

Variant links:

Genes affected

FMN2 (HGNC:14074): (formin 2) This gene is a member of the formin homology protein family. The encoded protein is thought to have essential roles in organization of the actin cytoskeleton and in cell polarity. This protein mediates the formation of an actin mesh that positions the spindle during oogenesis and also regulates the formation of actin filaments in the nucleus. This protein also forms a perinuclear actin/focal-adhesion system that regulates the shape and position of the nucleus during cell migration. Mutations in this gene have been associated with infertility and also with an autosomal recessive form of intellectual disability (MRT47). Alternatively spliced transcript variants have been identified. [provided by RefSeq, Jul 2017]

FMN2 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=0.15001586).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FMN2	NM_020066.5 link	c.4123C>A	p.Leu1375Ile	missense_variant	Exon 7 of 18	ENST00000319653.14	NP_064450.3	Q9NZ56-1Q9HBL1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FMN2	ENST00000319653.14 link	c.4123C>A	p.Leu1375Ile	missense_variant	Exon 7 of 18	5	NM_020066.5	ENSP00000318884.9		Q9NZ56-1

Frequencies

GnomAD3 genomes

AF:

0.000276

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

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:

0.000353

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000201

AC:

AN:

249218

Hom.:

AF XY:

0.000238

AC XY:

AN XY:

134702

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000353

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:

0.000336

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000347

AC:

507

AN:

1459940

Hom.:

Cov.:

AF XY:

0.000335

AC XY:

243

AN XY:

726206

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000292

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:

0.000432

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000276

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.000310

AC XY:

AN XY:

74284

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00111

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000279

Hom.:

Bravo

AF:

0.000317

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000214

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000238

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Intellectual disability, autosomal recessive 47

Uncertain:2

Oct 28, 2018

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Jan 14, 2021

Breda Genetics srl

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The variant c.4135C>A (p.Leu1379Ile) in the FMN2 gene is reported as of uncertain significance for autosomal recessive mental retardation 47 in ClinVar (Variation ID: 376966). The variant is reported with an estimated allele frequency of 0.0002 in gnomAD exomes and 0.0000646 in gnomAD genomes, with no homozygous individuals reported. The nucleotide position is moderately conserved across 35 mammalian species (GERP RS: 5.42). In silico analysis mostly indicates that the variant might be damaging. -

not specified

Uncertain:1

Dec 16, 2016

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Sep 28, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.73

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.39

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

T;.

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.014

MetaRNN

Benign

0.15

T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.3

L;.

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-1.9

N;N

REVEL

Benign

0.21

Sift

Benign

0.12

T;T

Sift4G

Uncertain

0.052

T;T

Polyphen

0.99

D;.

Vest4

0.51

MVP

0.29

MPC

0.47

ClinPred

0.11

GERP RS

5.4

Varity_R

0.30

gMVP

0.29

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