rs121908198
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1PM2PP3_StrongPP5_Moderate
The NM_000391.4(TPP1):c.1154T>A(p.Val385Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 32)
Consequence
TPP1
NM_000391.4 missense
NM_000391.4 missense
Scores
15
3
1
Clinical Significance
Conservation
PhyloP100: 8.18
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]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 10 ACMG points.
PM1
?
In a strand (size 12) in uniprot entity TPP1_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000391.4
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.987
PP5
?
Variant 11-6615554-A-T is Pathogenic according to our data. Variant chr11-6615554-A-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 68736.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr11-6615554-A-T is described in Lovd as [Likely_pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TPP1 | NM_000391.4 | c.1154T>A | p.Val385Asp | missense_variant | 10/13 | ENST00000299427.12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TPP1 | ENST00000299427.12 | c.1154T>A | p.Val385Asp | missense_variant | 10/13 | 1 | NM_000391.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 34
GnomAD4 exome
Cov.:
34
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1Other:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | May 27, 2022 | In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt TPP1 protein function. ClinVar contains an entry for this variant (Variation ID: 68736). This variant is also known as 5159T>A. This missense change has been observed in individual(s) with neuronal ceroid lipofuscinosis (PMID: 10330339). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces valine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 385 of the TPP1 protein (p.Val385Asp). - |
Neuronal ceroid lipofuscinosis 2 Other:1
not provided, no classification provided | literature only | UniProtKB/Swiss-Prot | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Pathogenic
D;.;.;.;.;.;.
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;.;D;.;D;.;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D;D;D;D;D
MetaSVM
Pathogenic
D
MutationAssessor
Pathogenic
H;.;.;.;.;.;.
MutationTaster
Benign
D;D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;D;.;.;.;.;.
REVEL
Pathogenic
Sift
Uncertain
D;D;.;.;.;.;.
Sift4G
Pathogenic
D;D;.;.;.;.;.
Polyphen
D;.;.;.;.;.;.
Vest4
MutPred
Gain of disorder (P = 0.01);.;.;.;.;.;.;
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at