rs140726254

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The ENST00000533371.6(TPP1):c.-437C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0019 in 1,614,170 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0019 ( 7 hom. )

Consequence

TPP1
ENST00000533371.6 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:6O:1

Conservation

PhyloP100: 3.26

Publications

12 publications found

Variant links:

Genes affected

TPP1 (HGNC:2073): (tripeptidyl peptidase 1) This gene encodes a member of the sedolisin family of serine proteases. The protease functions in the lysosome to cleave N-terminal tripeptides from substrates, and has weaker endopeptidase activity. It is synthesized as a catalytically-inactive enzyme which is activated and auto-proteolyzed upon acidification. Mutations in this gene result in late-infantile neuronal ceroid lipofuscinosis, which is associated with the failure to degrade specific neuropeptides and a subunit of ATP synthase in the lysosome. [provided by RefSeq, Jul 2008]

TPP1 Gene-Disease associations (from GenCC):

neuronal ceroid lipofuscinosis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
neuronal ceroid lipofuscinosis 2
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Myriad Women’s Health, Genomics England PanelApp, PanelApp Australia
autosomal recessive spinocerebellar ataxia 7
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia

TPP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.014937371).

BP6

Variant 11-6617713-G-A is Benign according to our data. Variant chr11-6617713-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 130609.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00196 (298/152286) while in subpopulation AFR AF = 0.00354 (147/41556). AF 95% confidence interval is 0.00307. There are 0 homozygotes in GnomAd4. There are 126 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 7 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000533371.6. 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
	TPP1	NM_000391.4	MANE Select	c.293C>T	p.Thr98Met	missense	Exon 4 of 13	NP_000382.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TPP1	ENST00000533371.6	TSL:1	c.-437C>T		5_prime_UTR_premature_start_codon_gain	Exon 3 of 12	ENSP00000437066.1	O14773-2
TPP1	ENST00000299427.12	TSL:1 MANE Select	c.293C>T	p.Thr98Met	missense	Exon 4 of 13	ENSP00000299427.6	O14773-1
TPP1	ENST00000533371.6	TSL:1	c.-437C>T		5_prime_UTR	Exon 3 of 12	ENSP00000437066.1	O14773-2

Frequencies

GnomAD3 genomes

AF:

0.00196

AC:

299

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00355

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00186

Gnomad FIN

AF:

0.000660

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00165

Gnomad OTH

AF:

0.00239

GnomAD2 exomes

AF:

0.00135

AC:

340

AN:

251444

AF XY:

0.00137

show subpopulations

Gnomad AFR exome

AF:

0.00351

Gnomad AMR exome

AF:

0.00119

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000185

Gnomad NFE exome

AF:

0.00152

Gnomad OTH exome

AF:

0.000977

GnomAD4 exome

AF:

0.00189

AC:

2767

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00186

AC XY:

1351

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.00430

AC:

144

AN:

33480

American (AMR)

AF:

0.00110

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39700

South Asian (SAS)

AF:

0.00210

AC:

181

AN:

86258

European-Finnish (FIN)

AF:

0.000131

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00121

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00204

AC:

2272

AN:

1112010

Other (OTH)

AF:

0.00172

AC:

104

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

180

360

540

720

900

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

188

282

376

470

<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:

0.00196

AC:

298

AN:

152286

Hom.:

Cov.:

AF XY:

0.00169

AC XY:

126

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.00354

AC:

147

AN:

41556

American (AMR)

AF:

0.00124

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00166

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.000660

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00165

AC:

112

AN:

68016

Other (OTH)

AF:

0.00237

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

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:

0.00161

Hom.:

Bravo

AF:

0.00212

TwinsUK

AF:

0.00243

AC:

ALSPAC

AF:

0.00259

AC:

ESP6500AA

AF:

0.00318

AC:

ESP6500EA

AF:

0.00151

AC:

ExAC

AF:

0.00155

AC:

188

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00131

EpiControl

AF:

0.00196

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (5)

Neuronal ceroid lipofuscinosis 2 (3)

not specified (2)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Uncertain

0.45

Eigen

Benign

0.074

Eigen_PC

Benign

0.15

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.75

M_CAP

Benign

0.018

MetaRNN

Benign

0.015

MetaSVM

Benign

-0.79

MutationAssessor

Benign

1.9

PhyloP100

3.3

PrimateAI

Benign

0.37

PROVEAN

Benign

-0.70

REVEL

Benign

0.12

Sift

Benign

0.24

Sift4G

Benign

0.17

Polyphen

0.022

Vest4

0.21

MVP

0.74

MPC

0.21

ClinPred

0.022

GERP RS

5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.16

gMVP

0.55

Mutation Taster

=85/15

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

Computational scores

Splicing

Publications

Other links and lift over