dbSNP rs780761368: NPHS2:p.Ala284Val (chr1-179552625-G-A) – ACMG Classification: Pathogenic (19 pts)

Variant summary

Our verdict is Pathogenic. The variant received 19 ACMG points: 19P and 0B. PS3PM1PP2PP3_StrongPP5_Very_Strong

The NM_014625.4(NPHS2):c.851C>T(p.Ala284Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000744 in 1,613,620 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 (★★). ClinVar reports functional evidence for this variant: "SCV001231507: This variant has been shown to alter NPHS2 (podocin) protein function, resulting in podocin mislocalization when in combination with p.Arg229Gln-podocin. PMID:24509478" and additional evidence is available in ClinVar. Synonymous variant affecting the same amino acid position (i.e. A284A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

NPHS2
NM_014625.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:11

Conservation

PhyloP100: 5.46

Publications

16 publications found

Variant links:

Genes affected

NPHS2 (HGNC:13394): (NPHS2 stomatin family member, podocin) This gene encodes a protein that plays a role in the regulation of glomerular permeability. Mutations in this gene cause steroid-resistant nephrotic syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

NPHS2 links:

AXDND1 (HGNC:26564): (axonemal dynein light chain domain containing 1)

AXDND1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 19 ACMG points.

PS3

PS3 evidence extracted from ClinVar submissions: SCV001231507: This variant has been shown to alter NPHS2 (podocin) protein function, resulting in podocin mislocalization when in combination with p.Arg229Gln-podocin. PMID: 24509478; SCV000919906: An extensive study performed by Tory_2014, demonstrated that the A284V podocin protein was mislocalized in the cytoplasmic compartment (either when coexpressed with the WT or with the R229Q podocin), in contrast, while WT podocin reached the plasma membrane, podocin R229Q was retained in the cytoplasm in cells coexpressing podocin A284V (on the other hand, both the WT podocin and podocin R229Q were localized to the plasma membrane when coexpressed together); authors concluded that these interactions mimicked a dominant-negative effect of A284V on the R229Q variant protein.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in NM_014625.4

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 29 curated pathogenic missense variants (we use a threshold of 10). The gene has 4 curated benign missense variants. Gene score misZ: 0.68612 (below the threshold of 3.09). Trascript score misZ: 0.038296 (below the threshold of 3.09). GenCC associations: The gene is linked to familial idiopathic steroid-resistant nephrotic syndrome, nephrotic syndrome, type 2.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.984

PP5

Variant 1-179552625-G-A is Pathogenic according to our data. Variant chr1-179552625-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 562398.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014625.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NPHS2	NM_014625.4	MANE Select	c.851C>T	p.Ala284Val	missense	Exon 7 of 8	NP_055440.1	Q9NP85-1
AXDND1	NM_144696.6	MANE Select	c.3032-1887G>A		intron	N/A	NP_653297.3
NPHS2	NM_001297575.2		c.647C>T	p.Ala216Val	missense	Exon 6 of 7	NP_001284504.1	Q9NP85-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NPHS2	ENST00000367615.9	TSL:1 MANE Select	c.851C>T	p.Ala284Val	missense	Exon 7 of 8	ENSP00000356587.4	Q9NP85-1
NPHS2	ENST00000367616.4	TSL:1	c.647C>T	p.Ala216Val	missense	Exon 6 of 7	ENSP00000356588.4	Q9NP85-2
AXDND1	ENST00000367618.8	TSL:1 MANE Select	c.3032-1887G>A		intron	N/A	ENSP00000356590.3	Q5T1B0-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000478

GnomAD2 exomes

AF:

0.00000400

AC:

AN:

249998

AF XY:

0.00000740

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000886

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1461466

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727032

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39686

South Asian (SAS)

AF:

0.00

AC:

AN:

86192

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53304

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111864

Other (OTH)

AF:

0.0000331

AC:

AN:

60350

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152154

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74322

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41432

American (AMR)

AF:

0.000196

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68036

Other (OTH)

AF:

0.000478

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.0000407

Hom.:

Bravo

AF:

0.0000793

ExAC

AF:

0.00000824

AC:

ClinVar

ClinVar submissions

Significance:Pathogenic/Likely pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Nephrotic syndrome, type 2 (6)

not provided (4)

Idiopathic nephrotic syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Pathogenic

0.53

BayesDel_noAF

Pathogenic

0.53

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.93

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.98

MetaSVM

Pathogenic

0.89

MutationAssessor

Pathogenic

3.8

PhyloP100

5.5

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.8

REVEL

Pathogenic

0.88

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.94

MutPred

0.94

Loss of disorder (P = 0.0728)

MVP

0.93

MPC

0.91

ClinPred

1.0

GERP RS

5.3

Varity_R

0.86

gMVP

0.88

Mutation Taster

=16/84

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over