Genetic Variant SERPINB2:p.Ser171Thr (chr18-63897820-T-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_002575.3(SERPINB2):c.511T>A(p.Ser171Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000101 in 1,610,310 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00051 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000058 ( 1 hom. )

Consequence

SERPINB2
NM_002575.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0200

Publications

0 publications found

Variant links:

Genes affected

SERPINB2 (HGNC:8584): (serpin family B member 2) Predicted to enable serine-type endopeptidase inhibitor activity. Predicted to be involved in negative regulation of endopeptidase activity. Predicted to be located in extracellular region and plasma membrane. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

SERPINB2 links:

ENSG00000289724 (HGNC:):

ENSG00000289724 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.018857092).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SERPINB2	NM_002575.3 link	c.511T>A	p.Ser171Thr	missense_variant	Exon 5 of 8	ENST00000299502.9	NP_002566.1	P05120
SERPINB2	NM_001143818.2 link	c.511T>A	p.Ser171Thr	missense_variant	Exon 6 of 9		NP_001137290.1	P05120
SERPINB2	XM_024451192.2 link	c.511T>A	p.Ser171Thr	missense_variant	Exon 5 of 8		XP_024306960.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SERPINB2	ENST00000299502.9 link	c.511T>A	p.Ser171Thr	missense_variant	Exon 5 of 8	1	NM_002575.3	ENSP00000299502.4		P05120
ENSG00000289724	ENST00000418725.1 link	c.139T>A	p.Ser47Thr	missense_variant	Exon 2 of 7	5		ENSP00000392381.1		H7C004

Frequencies

GnomAD3 genomes

AF:

0.000519

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00183

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000156

AC:

AN:

250362

AF XY:

0.000126

show subpopulations

Gnomad AFR exome

AF:

0.00223

Gnomad AMR exome

AF:

0.0000873

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:

0.0000583

AC:

AN:

1457994

Hom.:

Cov.:

AF XY:

0.0000524

AC XY:

AN XY:

725522

show subpopulations

African (AFR)

AF:

0.00213

AC:

AN:

33270

American (AMR)

AF:

0.0000897

AC:

AN:

44576

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26070

East Asian (EAS)

AF:

0.00

AC:

AN:

39658

South Asian (SAS)

AF:

0.00

AC:

AN:

86060

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1108924

Other (OTH)

AF:

0.000149

AC:

AN:

60266

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000512

AC:

AN:

152316

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.00180

AC:

AN:

41580

American (AMR)

AF:

0.000196

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

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: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000496

Hom.:

Bravo

AF:

0.000518

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000157

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 24, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.511T>A (p.S171T) alteration is located in exon 6 (coding exon 4) of the SERPINB2 gene. This alteration results from a T to A substitution at nucleotide position 511, causing the serine (S) at amino acid position 171 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.32

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.15

T;T

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.28

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.39

.;T

M_CAP

Benign

0.036

MetaRNN

Benign

0.019

T;T

MetaSVM

Benign

-0.41

MutationAssessor

Benign

1.9

L;L

PhyloP100

-0.020

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.6

N;N

REVEL

Benign

0.22

Sift

Benign

0.46

T;T

Sift4G

Benign

0.31

T;T

Polyphen

0.24

B;B

Vest4

0.14

MVP

0.66

MPC

0.086

ClinPred

0.032

GERP RS

3.0

Varity_R

0.47

gMVP

0.28

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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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18-63897820-T-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over