Genetic Variant IFFO2:p.Arg508His (chr1-18908592-C-T) – 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_001136265.2(IFFO2):c.1523G>A(p.Arg508His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000361 in 1,551,676 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R508C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

IFFO2
NM_001136265.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.61

Publications

0 publications found

Variant links:

Genes affected

IFFO2 (HGNC:27006): (intermediate filament family orphan 2) Predicted to be located in intermediate filament. [provided by Alliance of Genome Resources, Apr 2022]

IFFO2 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=0.14825347).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001136265.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IFFO2	NM_001136265.2	MANE Select	c.1523G>A	p.Arg508His	missense	Exon 9 of 9	NP_001129737.1	Q5TF58

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
IFFO2	ENST00000455833.7	TSL:5 MANE Select	c.1523G>A	p.Arg508His	missense	Exon 9 of 9	ENSP00000387941.2	Q5TF58
IFFO2	ENST00000944819.1		c.1586G>A	p.Arg529His	missense	Exon 10 of 10	ENSP00000614878.1
IFFO2	ENST00000416166.1	TSL:3	c.746G>A	p.Arg249His	missense	Exon 8 of 8	ENSP00000394655.1	H0Y4W3

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000516

AC:

AN:

154896

AF XY:

0.0000487

show subpopulations

Gnomad AFR exome

AF:

0.000628

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000275

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000222

AC:

AN:

1399352

Hom.:

Cov.:

AF XY:

0.0000232

AC XY:

AN XY:

690190

show subpopulations

African (AFR)

AF:

0.000506

AC:

AN:

31592

American (AMR)

AF:

0.00

AC:

AN:

35700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25178

East Asian (EAS)

AF:

0.0000280

AC:

AN:

35732

South Asian (SAS)

AF:

0.00

AC:

AN:

79234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49314

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5696

European-Non Finnish (NFE)

AF:

0.00000927

AC:

AN:

1078880

Other (OTH)

AF:

0.0000689

AC:

AN:

58026

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000164

AC:

AN:

152324

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.000601

AC:

AN:

41570

American (AMR)

AF:

0.00

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000219

Hom.:

Bravo

AF:

0.000215

ESP6500AA

AF:

0.000723

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000374

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.20

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.014

Eigen

Benign

0.18

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Benign

0.75

LIST_S2

Uncertain

0.91

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.15

MetaSVM

Uncertain

-0.26

MutationAssessor

Benign

0.0

PhyloP100

2.6

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.2

REVEL

Benign

0.27

Sift

Uncertain

0.012

Sift4G

Uncertain

0.035

Polyphen

0.97

Vest4

0.35

MVP

0.98

MPC

2.0

ClinPred

0.15

GERP RS

4.4

Varity_R

0.11

gMVP

0.15

Mutation Taster

=84/16

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over