chr19-35849565-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_004646.4(NPHS1):c.697A>G(p.Thr233Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000493 in 1,613,762 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign 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. T233P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0026 ( 3 hom., cov: 32)

Exomes 𝑓: 0.00027 ( 0 hom. )

Consequence

NPHS1
NM_004646.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:5

Conservation

PhyloP100: 2.76

Publications

7 publications found

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 Gene-Disease associations (from GenCC):

congenital nephrotic syndrome, Finnish type
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Myriad Women’s Health, G2P, Labcorp Genetics (formerly Invitae), ClinGen
familial idiopathic steroid-resistant nephrotic syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

NPHS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.00669083).

BP6

Variant 19-35849565-T-C is Benign according to our data. Variant chr19-35849565-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 259506.

BS2

High Homozygotes in GnomAd4 at 3 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPHS1	NM_004646.4 link	c.697A>G	p.Thr233Ala	missense_variant	Exon 6 of 29	ENST00000378910.10	NP_004637.1	O60500-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NPHS1	ENST00000378910.10 link	c.697A>G	p.Thr233Ala	missense_variant	Exon 6 of 29	1	NM_004646.4	ENSP00000368190.4		O60500-1
NPHS1	ENST00000353632.6 link	c.697A>G	p.Thr233Ala	missense_variant	Exon 6 of 28	5		ENSP00000343634.5		O60500-2

Frequencies

GnomAD3 genomes

AF:

0.00258

AC:

392

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00886

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

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:

0.0000294

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.000803

AC:

202

AN:

251430

AF XY:

0.000559

show subpopulations

Gnomad AFR exome

AF:

0.0104

Gnomad AMR exome

AF:

0.000665

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000274

AC:

401

AN:

1461538

Hom.:

Cov.:

AF XY:

0.000235

AC XY:

171

AN XY:

727080

show subpopulations

African (AFR)

AF:

0.00878

AC:

294

AN:

33478

American (AMR)

AF:

0.000604

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53376

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000216

AC:

AN:

1111730

Other (OTH)

AF:

0.000778

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

112

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00259

AC:

394

AN:

152224

Hom.:

Cov.:

AF XY:

0.00236

AC XY:

176

AN XY:

74432

show subpopulations

African (AFR)

AF:

0.00889

AC:

369

AN:

41530

American (AMR)

AF:

0.00124

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68008

Other (OTH)

AF:

0.00189

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000867

Hom.:

Bravo

AF:

0.00297

ESP6500AA

AF:

0.0120

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00108

AC:

131

Asia WGS

AF:

0.00231

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:2

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 29, 2017

Athena Diagnostics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 20, 2021

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: NPHS1 c.697A>G (p.Thr233Ala) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00095 in 282828 control chromosomes, predominantly at a frequency of 0.0093 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 3 fold of the estimated maximal expected allele frequency for a pathogenic variant in NPHS1 causing Nephrotic Syndrome, Type 1 phenotype (0.0034), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. c.697A>G has been reported in the literature in individuals affected with end stage renal disease (Bonomo_2014). The report does not provide unequivocal conclusions about association of the variant with Nephrotic Syndrome, Type 1. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three ClinVar submitters (evaluation after 2014) cite the variant as uncertain significance (n=2) and benign (n=1). Based on the evidence outlined above, the variant was classified as likely benign. -

not provided

Uncertain:1Benign:2

Nov 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

NPHS1: BS2 -

Nov 17, 2020

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Reported in a case-control study in association with end-stage renal disease in both diabetic and non-diabetic African American individuals (Bonomo et al., 2014); Observed in homozygous state in two clinically unaffected adult relatives of individuals referred for genetic testing at GeneDx, however adult-onset of NPHS1-related disorders is possible; This variant is associated with the following publications: (PMID: 24948143) -

Finnish congenital nephrotic syndrome

Uncertain:1Benign:1

Jan 05, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jul 14, 2021

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Focal segmental glomerulosclerosis

Uncertain:1

Jan 01, 2020

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.25

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.42

T;.

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.57

T;T

MetaRNN

Benign

0.0067

T;T

MetaSVM

Uncertain

-0.17

MutationAssessor

Uncertain

2.6

M;M

PhyloP100

2.8

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-2.5

D;D

REVEL

Uncertain

0.38

Sift

Benign

0.058

T;T

Sift4G

Uncertain

0.014

D;D

Polyphen

0.98

D;.

Vest4

0.51

MVP

0.94

MPC

0.24

ClinPred

0.033

GERP RS

5.5

Varity_R

0.25

gMVP

0.68

Mutation Taster

=34/66

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over