rs386833932

Positions:

chr19-35851346-C-T

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1PM2PM5PP3_StrongPP5

The NM_004646.4(NPHS1):c.313G>A(p.Asp105Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000031 in 1,613,538 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D105A) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

NPHS1
NM_004646.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:5U:1

Conservation

PhyloP100: 5.25

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]

NPHS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PM1

In a disulfide_bond (size 58) in uniprot entity NPHN_HUMAN there are 10 pathogenic changes around while only 1 benign (91%) in NM_004646.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr19-35851345-T-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2129116.Status of the report is criteria_provided_single_submitter, 1 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.99

PP5

Variant 19-35851346-C-T is Pathogenic according to our data. Variant chr19-35851346-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 56493.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=3, Uncertain_significance=1}. Variant chr19-35851346-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NPHS1	NM_004646.4 linkuse as main transcript	c.313G>A	p.Asp105Asn	missense_variant	3/29	ENST00000378910.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NPHS1	ENST00000378910.10 linkuse as main transcript	c.313G>A	p.Asp105Asn	missense_variant	3/29	1	NM_004646.4	P2	O60500-1
NPHS1	ENST00000353632.6 linkuse as main transcript	c.313G>A	p.Asp105Asn	missense_variant	3/28	5		A2	O60500-2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461374

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726994

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:5Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Finnish congenital nephrotic syndrome

Pathogenic:4

Likely pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Nov 04, 2020	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Nov 02, 2018	Variant summary: NPHS1 c.313G>A (p.Asp105Asn) results in a conservative amino acid change located in the Immunoglobulin-like domain of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.6e-06 in 275106 control chromosomes (gnomAD and publications). The variant, c.313G>A, has been reported in the literature in individuals affected with Nephrotic Syndrome, Type 1 (Sadowski_2014, Sako_2005, Sen_2017). These data indicate that the variant is likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as likely pathogenic. Based on the evidence outlined above, the variant was classified as likely pathogenic. -
Likely pathogenic, no assertion criteria provided	literature only	Juha Muilu Group; Institute for Molecular Medicine Finland (FIMM)	-	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Counsyl	Aug 22, 2017	- -

not provided

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Invitae

Jul 17, 2023

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 105 of the NPHS1 protein (p.Asp105Asn). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individuals with nephrotic syndrome (PMID: 25349199, 28204945; Invitae). ClinVar contains an entry for this variant (Variation ID: 56493). 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. 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. -

Kidney disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Dec 12, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.77

BayesDel_addAF

Uncertain

0.10

BayesDel_noAF

Benign

-0.090

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.71

D;.

Eigen

Pathogenic

0.78

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.86

D;D

M_CAP

Pathogenic

0.60

MetaRNN

Pathogenic

0.99

D;D

MetaSVM

Pathogenic

0.90

MutationAssessor

Pathogenic

4.3

H;H

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.68

PROVEAN

Uncertain

-4.2

D;D

REVEL

Uncertain

0.61

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.78

MutPred

0.93

Loss of disorder (P = 0.09);Loss of disorder (P = 0.09);

MVP

0.91

MPC

0.69

ClinPred

1.0

GERP RS

5.9

Varity_R

0.88

gMVP

0.93

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over