NM_014625.4:c.868G>A
Variant summary
Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1PM2PP3PP5_Very_Strong
The NM_014625.4(NPHS2):c.868G>A(p.Val290Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000148 in 1,613,552 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 (★★).
Frequency
Consequence
NM_014625.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 13 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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NPHS2 | ENST00000367615.9 | c.868G>A | p.Val290Met | missense_variant | Exon 7 of 8 | 1 | NM_014625.4 | ENSP00000356587.4 | ||
AXDND1 | ENST00000367618.8 | c.3032-1904C>T | intron_variant | Intron 25 of 25 | 1 | NM_144696.6 | ENSP00000356590.3 |
Frequencies
GnomAD3 genomes AF: 0.000118 AC: 18AN: 152216Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.000112 AC: 28AN: 250300Hom.: 0 AF XY: 0.0000961 AC XY: 13AN XY: 135256
GnomAD4 exome AF: 0.000151 AC: 221AN: 1461336Hom.: 0 Cov.: 30 AF XY: 0.000182 AC XY: 132AN XY: 726938
GnomAD4 genome AF: 0.000118 AC: 18AN: 152216Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9AN XY: 74378
ClinVar
Submissions by phenotype
Nephrotic syndrome, type 2 Pathogenic:10
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Criteria applied: PM3_VSTR,PM2,PP3; Identified as compound heterozygous with NM_014625.4:c.948del -
Variant summary: The NPHS2 c.868G>A (p.Val290Met) variant involves the alteration of a conserved nucleotide. 3/4 in silico tools predict a damaging outcome for this variant (SNPs&GO not captured due to low reliability index). This variant was found in 9/114830 control chromosomes at a frequency of 0.0000784, which does not exceed the estimated maximal expected allele frequency of a pathogenic NPHS2 variant (0.0017678). This variant has been reported in numerous patients with NSPH2. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as likely pathogenic. Taken together, this variant is classified as pathogenic. -
The p.Val290Met variant in NPHS2 has been reported in at least 5 individuals with steroid-resistant nephrotic syndrome. Two individuals were homozygous for this variant (Reiterova 2012, Kerti 2013) and three were compound heterozygotes (Karle 2002, Skalova 2010, Kerti 2013). The variant has been identified in 0.012% (1/8600) of European American chromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington.edu/EVS/) Although this variant has been seen in the general population, its frequency is low enough to be consistent with a recessive carrier frequency. Computational analyses (biochemical amino acid properties, conservation, PolyPhen2) do not provide strong support for or against an impact to the protein. In summary, this variant is likely to be pathogenic, though additional studies are required to fully establish its clinical significance. -
The NPHS2 c.868G>A (p.Val290Met) missense variant is reported in six studies in which it is found in a total of 11 individuals affected with steroid-resistant nephrotic syndrome, including in five individuals in a compound heterozygous state, in three affected individuals in a homozygous state and in three individuals in a heterozygous state (Karle et al. 2002; Skálová et al. 2010; Reiterová et al. 2012; Kerti et al. 2013; Lipska et al. 2013; Bińczak-Kuleta et al. 2014). The p.Val290Met variant was absent from 700 control chromosomes and is reported at a frequency of 0.0002412 in the European (non-Finnish) population of the Genome Aggregation Database. Although this variant has been observed in the general population, its frequency is low enough to be consistent with a recessive carrier frequency. Based on the collective evidence, the p.Val290Met variant is classified as pathogenic for steroid-resistant nephrotic syndrome. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population. -
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PS4, PM1, PM2, PP3, PP5- The variant has been reported in ClinVar as Pathogenic by other laboratories (Variation ID: 126418). Low frequency in gnomAD population databases. It has been previously reported as causative for steroid-resistant nephrotic syndrome (PMID: 11805166, 21171529) -
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NM_014625.2(NPHS2):c.868G>A(V290M) is classified as pathogenic in the context of NPHS2-related nephrotic syndrome. Sources cited for classification include the following: PMID 18216321, 23242530, 21171529, 17899208, 22578956, 11805166 and 14978175. Classification of NM_014625.2(NPHS2):c.868G>A(V290M) is based on the following criteria: This is a well-established pathogenic variant in the literature that has been observed more frequently in patients with clinical diagnoses than in healthy populations. Please note: this variant was assessed in the context of healthy population screening. -
not provided Pathogenic:6
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In silico analysis indicates that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 34426522, 31589614, 21171529, 33565430, 11805166, 26211502, 24742477, 30295827, 31980526, 30647093, 24856380, 23645318, 23242530, 18216321, 17899208, 14978175, Smirnova2023[abstract], 32129207, 36938085, 30586318, 38170106, 36898413) -
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This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 290 of the NPHS2 protein (p.Val290Met). This variant is present in population databases (rs200482683, gnomAD 0.03%). This missense change has been observed in individual(s) with NPHS2-related disease (PMID: 11805166, 21171529, 23242530, 24856380, 30295827). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 126418). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt NPHS2 protein function with a positive predictive value of 95%. For these reasons, this variant has been classified as Pathogenic. -
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NPHS2-related disorder Pathogenic:1
The NPHS2 c.868G>A variant is predicted to result in the amino acid substitution p.Val290Met. This variant has been reported in the compound heterozygous and homozygous state in individuals with NPHS2-related disease (see for example - Karle et al. 2002. PubMed ID: 11805166; Skálová et al. 2010. PubMed ID: 21171529; Kerti et al. 2012. PubMed ID: 23242530; Table S7 - Groopman et al. 2018. PubMed ID: 30586318; Schapiro et al. 2019. PubMed ID: 30295827; Yao et al. 2019. PubMed ID: 30647093). This variant is reported in 0.024% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/1-179521743-C-T). This variant is interpreted as pathogenic. -
Nephrotic syndrome, type 2, susceptibility to Other:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at