rs1060502179
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM2PM5PP3_StrongPP5_Moderate
The NM_000391.4(TPP1):āc.182T>Gā(p.Leu61Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000658 in 152,084 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (ā ). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L61P) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000391.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 10 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TPP1 | NM_000391.4 | c.182T>G | p.Leu61Arg | missense_variant | 3/13 | ENST00000299427.12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TPP1 | ENST00000299427.12 | c.182T>G | p.Leu61Arg | missense_variant | 3/13 | 1 | NM_000391.4 | P1 | |
ENST00000545572.1 | n.34A>C | non_coding_transcript_exon_variant | 1/2 | 3 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152084Hom.: 0 Cov.: 32
GnomAD4 exome Cov.: 31
GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 152084Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74294
ClinVar
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jul 19, 2021 | 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. This missense change has been observed in individual(s) with deficient TPP1 enzyme levels and phenotypic characteristics of autosomal recessive neuronal ceroid lipofuscinosis type 2 (Invitae). In at least one individual the data is consistent with the variant being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (ExAC no frequency). This sequence change replaces leucine with arginine at codon 61 of the TPP1 protein (p.Leu61Arg). The leucine residue is highly conserved and there is a moderate physicochemical difference between leucine and arginine. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at