Genetic Variant FMN2:p.Ser306Cys (chr1-240093025-A-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_020066.5(FMN2):c.916A>T(p.Ser306Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S306G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FMN2
NM_020066.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.108

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

intellectual disability, autosomal recessive 47
Inheritance: AR Classification: STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

FMN2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.098781586).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FMN2	NM_020066.5 link	c.916A>T	p.Ser306Cys	missense_variant	Exon 1 of 18	ENST00000319653.14	NP_064450.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FMN2	ENST00000319653.14 link	c.916A>T	p.Ser306Cys	missense_variant	Exon 1 of 18	5	NM_020066.5	ENSP00000318884.9
FMN2	ENST00000447095.5 link	c.-87+24952A>T		intron_variant	Intron 2 of 6	3		ENSP00000409308.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1243644

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

601628

African (AFR)

AF:

0.00

AC:

AN:

23930

American (AMR)

AF:

0.00

AC:

AN:

13186

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

17840

East Asian (EAS)

AF:

0.00

AC:

AN:

29228

South Asian (SAS)

AF:

0.00

AC:

AN:

57912

European-Finnish (FIN)

AF:

0.00

AC:

AN:

29970

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4678

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1015374

Other (OTH)

AF:

0.00

AC:

AN:

51526

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.13

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.3

LIST_S2

Benign

0.34

M_CAP

Benign

0.012

MetaRNN

Benign

0.099

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

PhyloP100

-0.11

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.9

Sift

Benign

0.086

Sift4G

Uncertain

0.036

Vest4

0.079

ClinPred

0.34

GERP RS

-5.2

Varity_R

0.062

gMVP

0.12

Mutation Taster

=97/3

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over