NM_015102.5:c.1867A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_015102.5(NPHP4):c.1867A>G(p.Thr623Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000156 in 1,613,812 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00076 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000093 ( 0 hom. )

Consequence

NPHP4
NM_015102.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: -3.09

Publications

0 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 -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0030743778).

BP6

Variant 1-5905380-T-C is Benign according to our data. Variant chr1-5905380-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 281976.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000762 (116/152312) while in subpopulation AFR AF = 0.00267 (111/41564). AF 95% confidence interval is 0.00227. There are 1 homozygotes in GnomAd4. There are 47 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPHP4	NM_015102.5 link	c.1867A>G	p.Thr623Ala	missense_variant	Exon 15 of 30	ENST00000378156.9	NP_055917.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
NPHP4	ENST00000378156.9 link	c.1867A>G	p.Thr623Ala	missense_variant	Exon 15 of 30	1	NM_015102.5	ENSP00000367398.4	O75161-1
NPHP4	ENST00000378169.7 link	n.*768A>G		non_coding_transcript_exon_variant	Exon 12 of 27	1		ENSP00000367411.3	D6RA06
NPHP4	ENST00000489180.6 link	n.1864A>G		non_coding_transcript_exon_variant	Exon 15 of 33	2		ENSP00000423747.1	O75161-2
NPHP4	ENST00000378169.7 link	n.*768A>G		3_prime_UTR_variant	Exon 12 of 27	1		ENSP00000367411.3	D6RA06

Frequencies

GnomAD3 genomes

AF:

0.000762

AC:

116

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00268

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:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000269

AC:

AN:

249302

AF XY:

0.000207

show subpopulations

Gnomad AFR exome

AF:

0.00349

Gnomad AMR exome

AF:

0.000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000931

AC:

136

AN:

1461500

Hom.:

Cov.:

AF XY:

0.0000715

AC XY:

AN XY:

727038

show subpopulations

African (AFR)

AF:

0.00314

AC:

105

AN:

33476

American (AMR)

AF:

0.000246

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000630

AC:

AN:

1111674

Other (OTH)

AF:

0.000182

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

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:

0.000762

AC:

116

AN:

152312

Hom.:

Cov.:

AF XY:

0.000631

AC XY:

AN XY:

74488

show subpopulations

African (AFR)

AF:

0.00267

AC:

111

AN:

41564

American (AMR)

AF:

0.000196

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68024

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.507

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:

0.000293

Hom.:

Bravo

AF:

0.000820

ESP6500AA

AF:

0.00328

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000372

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Jun 27, 2023

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Nov 29, 2017

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

NPHP4-related disorder

Benign:1

Feb 08, 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). -

Inborn genetic diseases

Benign:1

Jan 11, 2023

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Nephronophthisis

Benign:1

Feb 02, 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

Benign

0.064

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.60

CADD

Benign

0.0010

(source)

DANN

Benign

0.21

DEOGEN2

Benign

0.12

T;.

Eigen

Benign

-2.4

Eigen_PC

Benign

-2.4

FATHMM_MKL

Benign

0.010

LIST_S2

Benign

0.37

T;T

M_CAP

Benign

0.021

MetaRNN

Benign

0.0031

T;T

MetaSVM

Benign

-0.68

MutationAssessor

Benign

0.15

N;.

PhyloP100

-3.1

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.1

N;.

REVEL

Benign

0.26

Sift

Benign

0.46

T;.

Sift4G

Benign

0.43

T;T

Polyphen

0.0

B;.

Vest4

0.025

MVP

0.65

MPC

0.062

ClinPred

0.0094

GERP RS

-11

Varity_R

0.030

gMVP

0.13

Mutation Taster

=96/4

polymorphism

(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