Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001330588.2(TPP2):c.1534G>A(p.Val512Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000577 in 1,612,336 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0032 ( 4 hom., cov: 32)

Exomes 𝑓: 0.00031 ( 6 hom. )

Consequence

TPP2
NM_001330588.2 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.06

Publications

4 publications found

Variant links:

Genes affected

TPP2 (HGNC:12016): (tripeptidyl peptidase 2) This gene encodes a mammalian peptidase that, at neutral pH, removes tripeptides from the N terminus of longer peptides. The protein has a specialized function that is essential for some MHC class I antigen presentation. The protein is a high molecular mass serine exopeptidase; the amino acid sequence surrounding the serine residue at the active site is similar to the peptidases of the subtilisin class rather than the trypsin class. [provided by RefSeq, Jul 2008]

TPP2 Gene-Disease associations (from GenCC):

immunodeficiency 78 with autoimmunity and developmental delay
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
autoimmune hemolytic anemia-autoimmune thrombocytopenia-primary immunodeficiency syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TPP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0076164305).

BP6

Variant 13-102636248-G-A is Benign according to our data. Variant chr13-102636248-G-A is described in ClinVar as Benign. ClinVar VariationId is 544313.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00315 (479/151970) while in subpopulation AFR AF = 0.0111 (461/41456). AF 95% confidence interval is 0.0103. There are 4 homozygotes in GnomAd4. There are 230 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 4 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001330588.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TPP2	NM_001330588.2	MANE Select	c.1534G>A	p.Val512Ile	missense	Exon 13 of 30	NP_001317517.1
TPP2	NM_001367947.1		c.1534G>A	p.Val512Ile	missense	Exon 13 of 30	NP_001354876.1
TPP2	NM_003291.4		c.1534G>A	p.Val512Ile	missense	Exon 13 of 29	NP_003282.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TPP2	ENST00000376052.5	TSL:5 MANE Select	c.1534G>A	p.Val512Ile	missense	Exon 13 of 30	ENSP00000365220.3
TPP2	ENST00000376065.8	TSL:1	c.1534G>A	p.Val512Ile	missense	Exon 13 of 29	ENSP00000365233.4
TPP2	ENST00000651544.1		c.1522G>A	p.Val508Ile	missense	Exon 13 of 27	ENSP00000498728.1

Frequencies

GnomAD3 genomes

AF:

0.00313

AC:

476

AN:

151852

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0111

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000919

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000948

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.000480

GnomAD2 exomes

AF:

0.000740

AC:

185

AN:

250024

AF XY:

0.000547

show subpopulations

Gnomad AFR exome

AF:

0.0105

Gnomad AMR exome

AF:

0.000292

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000929

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000310

AC:

452

AN:

1460366

Hom.:

Cov.:

AF XY:

0.000266

AC XY:

193

AN XY:

726498

show subpopulations

African (AFR)

AF:

0.0113

AC:

379

AN:

33410

American (AMR)

AF:

0.000270

AC:

AN:

44432

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26082

East Asian (EAS)

AF:

0.00

AC:

AN:

39606

South Asian (SAS)

AF:

0.0000233

AC:

AN:

86014

European-Finnish (FIN)

AF:

0.0000750

AC:

AN:

53354

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.0000144

AC:

AN:

1111386

Other (OTH)

AF:

0.000630

AC:

AN:

60322

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.00315

AC:

479

AN:

151970

Hom.:

Cov.:

AF XY:

0.00310

AC XY:

230

AN XY:

74282

show subpopulations

African (AFR)

AF:

0.0111

AC:

461

AN:

41456

American (AMR)

AF:

0.000918

AC:

AN:

15252

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4790

European-Finnish (FIN)

AF:

0.0000948

AC:

AN:

10546

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67972

Other (OTH)

AF:

0.000475

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

102

127

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00119

Hom.:

Bravo

AF:

0.00347

ESP6500AA

AF:

0.0102

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000964

AC:

117

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.0000546

EpiControl

AF:

0.00

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Evans syndrome, immunodeficiency, and premature immunosenescence associated with tripeptidyl-peptidase II deficiency (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.058

BayesDel_addAF

Benign

-0.67

BayesDel_noAF

Benign

-0.73

CADD

Benign

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.14

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.57

LIST_S2

Uncertain

0.86

MetaRNN

Benign

0.0076

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.28

PhyloP100

1.1

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.49

REVEL

Benign

0.13

Sift

Benign

0.43

Sift4G

Benign

0.38

Polyphen

0.0020

Vest4

0.11

MVP

0.043

MPC

0.56

ClinPred

0.011

GERP RS

-0.030

Varity_R

0.017

gMVP

0.066

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

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

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over