dbSNP rs200038215: TPP2:c.3579+8T>G (chr13-102674498-T-G) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 2P and 10B. PM2BP4_StrongBP6_ModerateBS1

The NM_001330588.2(TPP2):c.3579+8T>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00013 in 1,613,274 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00075 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000065 ( 0 hom. )

Consequence

TPP2
NM_001330588.2 splice_region, intron

Scores

Splicing: ADA: 0.00004102

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: 1.12

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 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.75).

BP6

Variant 13-102674498-T-G is Benign according to our data. Variant chr13-102674498-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 478055.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000755 (115/152320) while in subpopulation AFR AF= 0.00265 (110/41562). AF 95% confidence interval is 0.00225. There are 0 homozygotes in gnomad4. There are 58 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TPP2	NM_001330588.2 link	c.3579+8T>G		splice_region_variant, intron_variant	Intron 28 of 29	ENST00000376052.5	NP_001317517.1	P29144Q5VZU9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TPP2	ENST00000376052.5 link	c.3579+8T>G		splice_region_variant, intron_variant	Intron 28 of 29	5	NM_001330588.2	ENSP00000365220.3		Q5VZU9

Frequencies

GnomAD3 genomes

AF:

0.000756

AC:

115

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.000478

GnomAD3 exomes

AF:

0.000160

AC:

AN:

250298

Hom.:

AF XY:

0.000111

AC XY:

AN XY:

135368

show subpopulations

Gnomad AFR exome

AF:

0.00240

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.0000650

AC:

AN:

1460954

Hom.:

Cov.:

AF XY:

0.0000633

AC XY:

AN XY:

726770

show subpopulations

Gnomad4 AFR exome

AF:

0.00248

Gnomad4 AMR exome

AF:

0.0000895

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000829

GnomAD4 genome

AF:

0.000755

AC:

115

AN:

152320

Hom.:

Cov.:

AF XY:

0.000779

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00265

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000348

Hom.:

Bravo

AF:

0.000744

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

TPP2-related disorder

Benign:1

Apr 25, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

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

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely 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

-0.75

CADD

Benign

4.2

DANN

Benign

0.72

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000041

dbscSNV1_RF

Benign

0.0

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over