rs104894351
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PM5PP3_Moderate
The NM_014365.3(HSPB8):c.421A>C(p.Lys141Gln) 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. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K141N) has been classified as Pathogenic.
Frequency
Consequence
NM_014365.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
HSPB8 | NM_014365.3 | c.421A>C | p.Lys141Gln | missense_variant | 2/3 | ENST00000281938.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
HSPB8 | ENST00000281938.7 | c.421A>C | p.Lys141Gln | missense_variant | 2/3 | 1 | NM_014365.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 30
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Charcot-Marie-Tooth disease axonal type 2L Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jun 28, 2019 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Variants that disrupt the p.Lys141 amino acid residue in HSPB8 have been observed in affected individuals (PMID: 15122253, 20538880). This suggests that it is a clinically significant residue, and that other variants that disrupt this residue are likely to be causative of disease. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with HSPB8-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces lysine with glutamine at codon 141 of the HSPB8 protein (p.Lys141Gln). The lysine residue is highly conserved and there is a small physicochemical difference between lysine and glutamine. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at