Genetic Variant SERPINB2:p.Ala93Ala (chr18-63895374-G-A) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_002575.3(SERPINB2):c.279G>A(p.Ala93Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00165 in 1,613,928 control chromosomes in the GnomAD database, including 32 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0090 ( 14 hom., cov: 32)

Exomes 𝑓: 0.00088 ( 18 hom. )

Consequence

SERPINB2
NM_002575.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.932

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.62).

BP6

Variant 18-63895374-G-A is Benign according to our data. Variant chr18-63895374-G-A is described in ClinVar as [Benign]. Clinvar id is 768938.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.932 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00898 (1367/152282) while in subpopulation AFR AF = 0.0316 (1313/41546). AF 95% confidence interval is 0.0302. There are 14 homozygotes in GnomAd4. There are 652 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 14 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SERPINB2	NM_002575.3 link	c.279G>A	p.Ala93Ala	synonymous_variant	Exon 3 of 8	ENST00000299502.9	NP_002566.1	P05120
SERPINB2	NM_001143818.2 link	c.279G>A	p.Ala93Ala	synonymous_variant	Exon 4 of 9		NP_001137290.1	P05120
SERPINB2	XM_024451192.2 link	c.279G>A	p.Ala93Ala	synonymous_variant	Exon 3 of 8		XP_024306960.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SERPINB2	ENST00000299502.9 link	c.279G>A	p.Ala93Ala	synonymous_variant	Exon 3 of 8	1	NM_002575.3	ENSP00000299502.4		P05120

Frequencies

GnomAD3 genomes

AF:

0.00895

AC:

1362

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0316

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00190

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00718

GnomAD2 exomes

AF:

0.00231

AC:

579

AN:

251138

AF XY:

0.00158

show subpopulations

Gnomad AFR exome

AF:

0.0321

Gnomad AMR exome

AF:

0.00113

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000968

Gnomad OTH exome

AF:

0.000981

GnomAD4 exome

AF:

0.000883

AC:

1291

AN:

1461646

Hom.:

Cov.:

AF XY:

0.000759

AC XY:

552

AN XY:

727120

show subpopulations

African (AFR)

AF:

0.0309

AC:

1033

AN:

33464

American (AMR)

AF:

0.00125

AC:

AN:

44684

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39682

South Asian (SAS)

AF:

0.000162

AC:

AN:

86214

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000567

AC:

AN:

1111908

Other (OTH)

AF:

0.00197

AC:

119

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

122

184

245

306

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00898

AC:

1367

AN:

152282

Hom.:

Cov.:

AF XY:

0.00876

AC XY:

652

AN XY:

74462

show subpopulations

African (AFR)

AF:

0.0316

AC:

1313

AN:

41546

American (AMR)

AF:

0.00189

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5188

South Asian (SAS)

AF:

0.000415

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68026

Other (OTH)

AF:

0.00711

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

134

200

267

334

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00458

Hom.:

Bravo

AF:

0.0102

Asia WGS

AF:

0.00260

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Dec 31, 2019

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.62

CADD

Benign

8.7

(source)

DANN

Benign

0.56

PhyloP100

-0.93

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

chr18-63895374-G-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