NM_015102.5:c.4179T>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4BP6BS1BS2

The NM_015102.5(NPHP4):c.4179T>A(p.Phe1393Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00252 in 1,613,996 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0026 ( 9 hom. )

Consequence

NPHP4
NM_015102.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:4

Conservation

PhyloP100: -0.455

Publications

8 publications found

Variant links:

Genes affected

NPHP4 (HGNC:19104): (nephrocystin 4) This gene encodes a protein involved in renal tubular development and function. This protein interacts with nephrocystin, and belongs to a multifunctional complex that is localized to actin- and microtubule-based structures. Mutations in this gene are associated with nephronophthisis type 4, a renal disease, and with Senior-Loken syndrome type 4, a combination of nephronophthisis and retinitis pigmentosa. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2014]

NPHP4 Gene-Disease associations (from GenCC):

nephronophthisis 4
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae), G2P
Senior-Loken syndrome 4
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
nephronophthisis 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Senior-Loken syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NPHP4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.28556257).

BP6

Variant 1-5863367-A-T is Benign according to our data. Variant chr1-5863367-A-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 95686.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00157 (239/152312) while in subpopulation NFE AF = 0.00284 (193/68020). AF 95% confidence interval is 0.00251. There are 0 homozygotes in GnomAd4. There are 87 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 9 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPHP4	NM_015102.5 link	c.4179T>A	p.Phe1393Leu	missense_variant	Exon 30 of 30	ENST00000378156.9	NP_055917.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
NPHP4	ENST00000378156.9 link	c.4179T>A	p.Phe1393Leu	missense_variant	Exon 30 of 30	1	NM_015102.5	ENSP00000367398.4
NPHP4	ENST00000378169.7 link	n.*3080T>A		non_coding_transcript_exon_variant	Exon 27 of 27	1		ENSP00000367411.3
NPHP4	ENST00000489180.6 link	n.*1990T>A		non_coding_transcript_exon_variant	Exon 33 of 33	2		ENSP00000423747.1
NPHP4	ENST00000378169.7 link	n.*3080T>A		3_prime_UTR_variant	Exon 27 of 27	1		ENSP00000367411.3
NPHP4	ENST00000489180.6 link	n.*1990T>A		3_prime_UTR_variant	Exon 33 of 33	2		ENSP00000423747.1

Frequencies

GnomAD3 genomes

AF:

0.00157

AC:

239

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000651

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00284

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.00143

AC:

354

AN:

246924

AF XY:

0.00154

show subpopulations

Gnomad AFR exome

AF:

0.000452

Gnomad AMR exome

AF:

0.000550

Gnomad ASJ exome

AF:

0.00268

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000418

Gnomad NFE exome

AF:

0.00241

Gnomad OTH exome

AF:

0.00215

GnomAD4 exome

AF:

0.00262

AC:

3828

AN:

1461684

Hom.:

Cov.:

AF XY:

0.00261

AC XY:

1898

AN XY:

727122

show subpopulations

African (AFR)

AF:

0.000388

AC:

AN:

33480

American (AMR)

AF:

0.000537

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00256

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000568

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.000431

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.000867

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00317

AC:

3524

AN:

1111850

Other (OTH)

AF:

0.00204

AC:

123

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

196

393

589

786

982

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

134

268

402

536

670

<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:

0.00157

AC:

239

AN:

152312

Hom.:

Cov.:

AF XY:

0.00117

AC XY:

AN XY:

74484

show subpopulations

African (AFR)

AF:

0.000649

AC:

AN:

41574

American (AMR)

AF:

0.000588

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00115

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.000414

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.000188

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00284

AC:

193

AN:

68020

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

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:

0.00234

Hom.:

Bravo

AF:

0.00151

TwinsUK

AF:

0.00189

AC:

ALSPAC

AF:

0.00311

AC:

ESP6500AA

AF:

0.000477

AC:

ESP6500EA

AF:

0.00250

AC:

ExAC

AF:

0.00129

AC:

156

EpiCase

AF:

0.00267

EpiControl

AF:

0.00261

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Senior-Loken syndrome 4

Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Retinal dystrophy

Uncertain:1

Jan 01, 2022

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nephronophthisis 4

Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Benign:1

Feb 22, 2013

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

NPHP4-related disorder

Benign:1

Aug 09, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Senior-Loken syndrome 4;C1847013:Nephronophthisis 4

Benign:1

Aug 31, 2020

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:research

- -

Nephronophthisis

Benign:1

Jan 24, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Benign

-0.091

BayesDel_noAF

Uncertain

0.090

CADD

Benign

0.65

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.41

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.82

FATHMM_MKL

Benign

0.12

LIST_S2

Uncertain

0.88

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.29

MetaSVM

Uncertain

0.71

MutationAssessor

Pathogenic

3.0

PhyloP100

-0.46

PrimateAI

Uncertain

0.59

PROVEAN

Pathogenic

-5.5

REVEL

Uncertain

0.55

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.71

MutPred

0.58

Loss of catalytic residue at F1393 (P = 0.0994);

MVP

0.90

MPC

0.42

ClinPred

0.16

GERP RS

-3.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.73

gMVP

0.78

Mutation Taster

=49/51

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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