chr1-240092277-C-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_ModerateBP6BP7

The NM_020066.5(FMN2):​c.168C>A​(p.Gly56=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000325 in 1,569,232 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 1 hom., cov: 33)
Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

FMN2
NM_020066.5 synonymous

Scores

2

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: 0.127
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.27).
BP6
Variant 1-240092277-C-A is Benign according to our data. Variant chr1-240092277-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 3030846.Status of the report is no_assertion_criteria_provided, 0 stars.
BP7
Synonymous conserved (PhyloP=0.127 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
FMN2NM_020066.5 linkuse as main transcriptc.168C>A p.Gly56= synonymous_variant 1/18 ENST00000319653.14

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
FMN2ENST00000319653.14 linkuse as main transcriptc.168C>A p.Gly56= synonymous_variant 1/185 NM_020066.5 P1Q9NZ56-1
FMN2ENST00000447095.5 linkuse as main transcriptc.-87+24204C>A intron_variant 3

Frequencies

GnomAD3 genomes
AF:
0.000159
AC:
24
AN:
151092
Hom.:
1
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000559
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000657
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:
0.00
GnomAD3 exomes
AF:
0.0000758
AC:
15
AN:
198004
Hom.:
0
AF XY:
0.0000553
AC XY:
6
AN XY:
108548
show subpopulations
Gnomad AFR exome
AF:
0.00123
Gnomad AMR exome
AF:
0.0000332
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:
0.00
Gnomad OTH exome
AF:
0.000198
GnomAD4 exome
AF:
0.0000190
AC:
27
AN:
1418026
Hom.:
0
Cov.:
89
AF XY:
0.0000213
AC XY:
15
AN XY:
702854
show subpopulations
Gnomad4 AFR exome
AF:
0.000643
Gnomad4 AMR exome
AF:
0.0000736
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:
0.00000184
Gnomad4 OTH exome
AF:
0.0000171
GnomAD4 genome
AF:
0.000159
AC:
24
AN:
151206
Hom.:
1
Cov.:
33
AF XY:
0.000176
AC XY:
13
AN XY:
73898
show subpopulations
Gnomad4 AFR
AF:
0.000558
Gnomad4 AMR
AF:
0.0000656
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000356
Hom.:
0
Bravo
AF:
0.000249

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

FMN2-related disorder Benign:1
Likely benign, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesOct 04, 2021This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.27
CADD
Benign
10
DANN
Benign
0.95

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.

Other links and lift over

dbSNP: rs552568759; hg19: chr1-240255577; API