Genetic Variant OVCH2:p.Arg247Gln (chr11-7700457-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_198185.7(OVCH2):c.740G>A(p.Arg247Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000074 in 1,608,962 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/16 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. R247W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000080 ( 0 hom. )

Consequence

OVCH2
NM_198185.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.184

Publications

3 publications found

Variant links:

Genes affected

OVCH2 (HGNC:29970): (ovochymase 2) Predicted to enable metal ion binding activity and serine-type endopeptidase activity. Predicted to be involved in proteolysis. Predicted to be located in extracellular region. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

OVCH2 links:

LOC105376533 (HGNC:):

LOC105376533 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.041183352).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198185.7. 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
	OVCH2	NM_198185.7	MANE Select	c.740G>A	p.Arg247Gln	missense	Exon 7 of 16	NP_937828.3	A0A087X1V8
	OVCH2	NM_001367963.1		c.740G>A	p.Arg247Gln	missense	Exon 7 of 7	NP_001354892.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
OVCH2	ENST00000533663.6	TSL:5 MANE Select	c.740G>A	p.Arg247Gln	missense	Exon 7 of 16	ENSP00000484497.2	A0A087X1V8
OVCH2	ENST00000612000.1	TSL:5	c.740G>A	p.Arg247Gln	missense	Exon 7 of 15	ENSP00000484790.1	A0A087X1V8
OVCH2	ENST00000673880.1		c.650G>A	p.Arg217Gln	missense	Exon 6 of 12	ENSP00000501258.1	A0A669KBI9

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000419

AC:

AN:

238486

AF XY:

0.0000542

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000120

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000372

Gnomad OTH exome

AF:

0.000172

GnomAD4 exome

AF:

0.0000803

AC:

117

AN:

1456774

Hom.:

Cov.:

AF XY:

0.0000773

AC XY:

AN XY:

724052

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33406

American (AMR)

AF:

0.000114

AC:

AN:

43934

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25974

East Asian (EAS)

AF:

0.00

AC:

AN:

39476

South Asian (SAS)

AF:

0.0000352

AC:

AN:

85162

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53132

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.0000937

AC:

104

AN:

1109718

Other (OTH)

AF:

0.0000498

AC:

AN:

60216

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

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:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74340

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41438

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2094

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:

0.0000675

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000165

AC:

Asia WGS

AF:

0.000578

AC:

AN:

3476

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

0.070

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Benign

0.87

DEOGEN2

Benign

0.024

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.67

M_CAP

Benign

0.011

MetaRNN

Benign

0.041

MetaSVM

Benign

-0.71

PhyloP100

-0.18

PrimateAI

Benign

0.25

Sift4G

Benign

0.58

Vest4

0.10

MVP

0.040

ClinPred

0.23

GERP RS

-4.0

gMVP

0.57

Mutation Taster

=93/7

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.14

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