rs587776873
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PP3_StrongPP5_Very_Strong
The NM_002775.5(HTRA1):c.883G>A(p.Gly295Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,682 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Consequence
NM_002775.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
HTRA1 | ENST00000368984.8 | c.883G>A | p.Gly295Arg | missense_variant | Exon 4 of 9 | 1 | NM_002775.5 | ENSP00000357980.3 | ||
HTRA1 | ENST00000648167.1 | c.565G>A | p.Gly189Arg | missense_variant | Exon 4 of 9 | ENSP00000498033.1 | ||||
HTRA1 | ENST00000420892.1 | c.106G>A | p.Gly36Arg | missense_variant | Exon 1 of 6 | 2 | ENSP00000412676.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.0000119 AC: 3AN: 251248Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135846
GnomAD4 exome AF: 0.00000684 AC: 10AN: 1461682Hom.: 0 Cov.: 32 AF XY: 0.00000963 AC XY: 7AN XY: 727158
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not provided Pathogenic:2
This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 295 of the HTRA1 protein (p.Gly295Arg). This variant is present in population databases (rs587776873, gnomAD 0.002%). This missense change has been observed in individuals with autosomal dominant and recessive cerebral arteriopathy with subcortical infarcts and leukoencephalopathy (PMID: 21115960, 28782182; Invitae). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 30244). 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 HTRA1 protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects HTRA1 function (PMID: 31316458). For these reasons, this variant has been classified as Pathogenic. -
Not observed at significant frequency in large population cohorts (gnomAD); Published functional studies demonstrate a damaging effect on trimerization and protease activity (Uemura et al., 2019); This variant is associated with the following publications: (PMID: 31589614, 32017060, 31316458, 21115960, 28782182) -
CARASIL syndrome Pathogenic:1Other:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at