Genetic Variant IFFO2:p.Arg508Cys (chr1-18908593-G-A) – 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.1522C>T(p.Arg508Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000251 in 1,551,646 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R508H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

IFFO2
NM_001136265.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.00

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=0.1567674).

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.1522C>T	p.Arg508Cys	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.1522C>T	p.Arg508Cys	missense	Exon 9 of 9	ENSP00000387941.2	Q5TF58
IFFO2	ENST00000944819.1		c.1585C>T	p.Arg529Cys	missense	Exon 10 of 10	ENSP00000614878.1
IFFO2	ENST00000416166.1	TSL:3	c.745C>T	p.Arg249Cys	missense	Exon 8 of 8	ENSP00000394655.1	H0Y4W3

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000581

AC:

AN:

154892

AF XY:

0.0000608

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000243

AC:

AN:

1399340

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

690180

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31586

American (AMR)

AF:

0.0000280

AC:

AN:

35704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25172

East Asian (EAS)

AF:

0.00

AC:

AN:

35736

South Asian (SAS)

AF:

0.000252

AC:

AN:

79236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49312

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.0000111

AC:

AN:

1078876

Other (OTH)

AF:

0.0000172

AC:

AN:

58020

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.444

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:

0.0000328

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.0000240

AC:

AN:

41580

American (AMR)

AF:

0.0000654

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5174

South Asian (SAS)

AF:

0.000414

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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:

0.0000282

Hom.:

Bravo

AF:

0.00000756

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000224

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

Uncertain

0.40

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.11

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.068

Eigen

Uncertain

0.27

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.18

MetaRNN

Benign

0.16

MetaSVM

Uncertain

-0.19

MutationAssessor

Benign

0.0

PhyloP100

4.0

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-2.0

REVEL

Uncertain

0.47

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0040

Polyphen

0.99

Vest4

0.40

MutPred

0.24

Loss of solvent accessibility (P = 0.1434)

MVP

0.96

MPC

2.1

ClinPred

0.29

GERP RS

4.4

Varity_R

0.18

gMVP

0.28

Mutation Taster

=71/29

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over