Genetic Variant OSM:p.Arg233Ser (chr22-30263945-G-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_020530.6(OSM):c.697C>A(p.Arg233Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000158 in 1,521,698 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R233H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

OSM
NM_020530.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.254

Publications

3 publications found

Variant links:

Genes affected

OSM (HGNC:8506): (oncostatin M) This gene encodes a member of the leukemia inhibitory factor/oncostatin-M (LIF/OSM) family of proteins. The encoded preproprotein is proteolytically processed to generate the mature protein. This protein is a secreted cytokine and growth regulator that inhibits the proliferation of a number of tumor cell lines. This protein also regulates the production of other cytokines, including interleukin 6, granulocyte-colony stimulating factor and granulocyte-macrophage colony stimulating factor in endothelial cells. This gene and the related gene, leukemia inhibitory factor, also present on chromosome 22, may have resulted from the duplication of a common ancestral gene. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed. [provided by RefSeq, Jan 2016]

OSM links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.053587765).

BS2

High AC in GnomAdExome4 at 23 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020530.6. 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
	OSM	NM_020530.6	MANE Select	c.697C>A	p.Arg233Ser	missense	Exon 3 of 3	NP_065391.1	P13725
	OSM	NM_001319108.2		c.634C>A	p.Arg212Ser	missense	Exon 3 of 3	NP_001306037.1	B5MCX1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
OSM	ENST00000215781.3	TSL:1 MANE Select	c.697C>A	p.Arg233Ser	missense	Exon 3 of 3	ENSP00000215781.2	P13725
OSM	ENST00000403389.1	TSL:3	c.634C>A	p.Arg212Ser	missense	Exon 3 of 3	ENSP00000383893.1	B5MCX1
OSM	ENST00000403463.1	TSL:3	c.*491C>A		downstream_gene	N/A	ENSP00000384543.1	B5MC70

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152176

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:

0.000193

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:

0.0000390

AC:

AN:

179698

AF XY:

0.0000528

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000376

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000243

GnomAD4 exome

AF:

0.0000168

AC:

AN:

1369522

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

671612

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30374

American (AMR)

AF:

0.00

AC:

AN:

30166

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20044

East Asian (EAS)

AF:

0.000514

AC:

AN:

38928

South Asian (SAS)

AF:

0.00

AC:

AN:

71334

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48466

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5318

European-Non Finnish (NFE)

AF:

0.00000187

AC:

AN:

1068534

Other (OTH)

AF:

0.0000177

AC:

AN:

56358

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

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:

0.00000657

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74336

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41436

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000169

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.59

CADD

Benign

4.5

(source)

DANN

Benign

0.84

DEOGEN2

Uncertain

0.79

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.088

LIST_S2

Benign

0.32

M_CAP

Benign

0.010

MetaRNN

Benign

0.054

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

PhyloP100

-0.25

PrimateAI

Benign

0.22

PROVEAN

Uncertain

-3.1

REVEL

Benign

0.027

Sift

Benign

0.15

Sift4G

Uncertain

0.026

Polyphen

0.0060

Vest4

0.10

MutPred

0.25

Gain of phosphorylation at R233 (P = 0.0046)

MVP

0.35

MPC

0.21

ClinPred

0.0091

GERP RS

1.1

Varity_R

0.15

gMVP

0.13

Mutation Taster

=100/0

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over