Genetic Variant SERPINB4:p.Val341Glu (chr18-63637870-A-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_002974.4(SERPINB4):c.1022T>A(p.Val341Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000659 in 151,676 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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. V341A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Consequence

SERPINB4
NM_002974.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.42

Publications

1 publications found

Variant links:

Genes affected

SERPINB4 (HGNC:10570): (serpin family B member 4) The protein encoded by this gene is a member of the serpin family of serine protease inhibitors. The encoded protein is highly expressed in many tumor cells and can inactivate granzyme M, an enzyme that kills tumor cells. This protein, along with serpin B3, can be processed into smaller fragments that aggregate to form an autoantigen in psoriasis, probably by causing chronic inflammation. [provided by RefSeq, Jan 2017]

SERPINB4 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3512054).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002974.4. 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
	SERPINB4	NM_002974.4	MANE Select	c.1022T>A	p.Val341Glu	missense	Exon 8 of 8	NP_002965.1	P48594
	SERPINB4	NM_175041.2		c.959T>A	p.Val320Glu	missense	Exon 8 of 8	NP_778206.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERPINB4	ENST00000341074.10	TSL:1 MANE Select	c.1022T>A	p.Val341Glu	missense	Exon 8 of 8	ENSP00000343445.5	P48594
	SERPINB4	ENST00000413673.5	TSL:1	c.962T>A	p.Val321Glu	missense	Exon 7 of 7	ENSP00000398645.1	H0Y5H9

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151676

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:

0.000194

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

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151676

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74052

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41272

American (AMR)

AF:

0.00

AC:

AN:

15196

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.000194

AC:

AN:

5164

South Asian (SAS)

AF:

0.00

AC:

AN:

4798

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10562

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67908

Other (OTH)

AF:

0.00

AC:

AN:

2082

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

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:

0.0000165

Hom.:

Bravo

AF:

0.0000151

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.58

BayesDel_addAF

Uncertain

0.046

BayesDel_noAF

Benign

-0.17

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.19

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.56

FATHMM_MKL

Uncertain

0.78

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.018

MetaRNN

Benign

0.35

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

PhyloP100

2.4

PROVEAN

Benign

-1.3

REVEL

Uncertain

0.42

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

0.076

Vest4

0.17

MutPred

0.77

Gain of disorder (P = 0.0068)

MVP

0.45

MPC

0.011

ClinPred

0.71

GERP RS

3.6

Varity_R

0.19

gMVP

0.53

Mutation Taster

=96/4

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