rs142008044

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PP3_StrongPP5

The NM_004646.4(NPHS1):​c.1234G>T​(p.Gly412Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,858 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

NPHS1
NM_004646.4 missense

Scores

11
6
2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:1

Conservation

PhyloP100: 3.05
Variant links:
Genes affected
NPHS1 (HGNC:7908): (NPHS1 adhesion molecule, nephrin) This gene encodes a member of the immunoglobulin family of cell adhesion molecules that functions in the glomerular filtration barrier in the kidney. The gene is primarily expressed in renal tissues, and the protein is a type-1 transmembrane protein found at the slit diaphragm of glomerular podocytes. The slit diaphragm is thought to function as an ultrafilter to exclude albumin and other plasma macromolecules in the formation of urine. Mutations in this gene result in Finnish-type congenital nephrosis 1, characterized by severe proteinuria and loss of the slit diaphragm and foot processes.[provided by RefSeq, Oct 2009]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM1
In a domain Ig-like C2-type 4 (size 94) in uniprot entity NPHN_HUMAN there are 15 pathogenic changes around while only 1 benign (94%) in NM_004646.4
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.982
PP5
Variant 19-35848334-C-A is Pathogenic according to our data. Variant chr19-35848334-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 56432.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1, Pathogenic=1}. Variant chr19-35848334-C-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NPHS1NM_004646.4 linkc.1234G>T p.Gly412Cys missense_variant Exon 10 of 29 ENST00000378910.10 NP_004637.1 O60500-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NPHS1ENST00000378910.10 linkc.1234G>T p.Gly412Cys missense_variant Exon 10 of 29 1 NM_004646.4 ENSP00000368190.4 O60500-1
NPHS1ENST00000353632.6 linkc.1234G>T p.Gly412Cys missense_variant Exon 10 of 28 5 ENSP00000343634.5 O60500-2
NPHS1ENST00000592132.1 linkn.241G>T non_coding_transcript_exon_variant Exon 3 of 4 3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251346
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
135844
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000880
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461858
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
727238
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:3Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Finnish congenital nephrotic syndrome Pathogenic:3
-
Juha Muilu Group; Institute for Molecular Medicine Finland (FIMM)
Significance: Likely pathogenic
Review Status: no assertion criteria provided
Collection Method: literature only

- -

Mar 12, 2024
Baylor Genetics
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Aug 10, 2017
Counsyl
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not provided Uncertain:1
Jun 30, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with cysteine, which is neutral and slightly polar, at codon 412 of the NPHS1 protein (p.Gly412Cys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with NPHS1-related conditions (PMID: 18503012, 22732337, 24498843, 31308072, 35990031). ClinVar contains an entry for this variant (Variation ID: 56432). 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 NPHS1 protein function with a positive predictive value of 80%. This variant disrupts the p.Gly412 amino acid residue in NPHS1. Other variant(s) that disrupt this residue have been observed in individuals with NPHS1-related conditions (PMID: 25349199), which suggests that this may be a clinically significant amino acid residue. 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.69
BayesDel_addAF
Pathogenic
0.37
D
BayesDel_noAF
Pathogenic
0.29
CADD
Pathogenic
27
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.90
D;.
Eigen
Uncertain
0.61
Eigen_PC
Uncertain
0.50
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Benign
0.78
T;T
M_CAP
Pathogenic
0.72
D
MetaRNN
Pathogenic
0.98
D;D
MetaSVM
Uncertain
0.40
D
MutationAssessor
Pathogenic
3.0
M;M
PrimateAI
Uncertain
0.52
T
PROVEAN
Pathogenic
-4.5
D;D
REVEL
Pathogenic
0.83
Sift
Uncertain
0.0030
D;D
Sift4G
Pathogenic
0.0
D;D
Polyphen
1.0
D;.
Vest4
0.81
MutPred
0.87
Loss of relative solvent accessibility (P = 0.0676);Loss of relative solvent accessibility (P = 0.0676);
MVP
0.91
MPC
0.72
ClinPred
0.99
D
GERP RS
5.5
Varity_R
0.80
gMVP
0.87

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs142008044; hg19: chr19-36339236; API