chr1-5890915-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_015102.5(NPHP4):c.2257G>A(p.Asp753Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000572 in 1,610,448 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. D753D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0030 ( 4 hom., cov: 32)

Exomes 𝑓: 0.00032 ( 2 hom. )

Consequence

NPHP4
NM_015102.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:10

Conservation

PhyloP100: 7.39

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.021736532).

BP6

Variant 1-5890915-C-T is Benign according to our data. Variant chr1-5890915-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 194764.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Benign=3, Uncertain_significance=2}. Variant chr1-5890915-C-T is described in Lovd as [Benign]. Variant chr1-5890915-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00297 (453/152308) while in subpopulation AFR AF= 0.0103 (426/41558). AF 95% confidence interval is 0.00945. There are 4 homozygotes in gnomad4. There are 218 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPHP4	NM_015102.5 link	c.2257G>A	p.Asp753Asn	missense_variant	Exon 17 of 30	ENST00000378156.9	NP_055917.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
NPHP4	ENST00000378156.9 link	c.2257G>A	p.Asp753Asn	missense_variant	Exon 17 of 30	1	NM_015102.5	ENSP00000367398.4	O75161-1
NPHP4	ENST00000378169.7 link	n.*1158G>A		non_coding_transcript_exon_variant	Exon 14 of 27	1		ENSP00000367411.3	D6RA06
NPHP4	ENST00000489180.6 link	n.2254G>A		non_coding_transcript_exon_variant	Exon 17 of 33	2		ENSP00000423747.1	O75161-2
NPHP4	ENST00000378169.7 link	n.*1158G>A		3_prime_UTR_variant	Exon 14 of 27	1		ENSP00000367411.3	D6RA06

Frequencies

GnomAD3 genomes

AF:

0.00296

AC:

451

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0102

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

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:

0.0000735

Gnomad OTH

AF:

0.00382

GnomAD3 exomes

AF:

0.000735

AC:

179

AN:

243496

Hom.:

AF XY:

0.000445

AC XY:

AN XY:

132468

show subpopulations

Gnomad AFR exome

AF:

0.0108

Gnomad AMR exome

AF:

0.000411

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000336

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000363

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.000321

AC:

468

AN:

1458140

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

195

AN XY:

724942

show subpopulations

Gnomad4 AFR exome

AF:

0.0113

Gnomad4 AMR exome

AF:

0.000450

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000315

Gnomad4 OTH exome

AF:

0.000498

GnomAD4 genome

AF:

0.00297

AC:

453

AN:

152308

Hom.:

Cov.:

AF XY:

0.00293

AC XY:

218

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.0103

Gnomad4 AMR

AF:

0.000914

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00378

Alfa

AF:

0.000366

Hom.:

Bravo

AF:

0.00325

ESP6500AA

AF:

0.00812

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000794

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:10

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:4

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

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Oct 07, 2014

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Uncertain:1Benign:2

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Nov 21, 2022

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

BS1, PP3 -

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Nephronophthisis 4

Benign:2

Mar 29, 2024

Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Kidney disorder

Uncertain:1

Feb 13, 2017

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Senior-Loken syndrome 4

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Nephronophthisis

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.096

BayesDel_noAF

Uncertain

0.10

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.50

T;.

Eigen

Uncertain

0.68

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D

MetaRNN

Benign

0.022

T;T

MetaSVM

Uncertain

0.71

MutationAssessor

Uncertain

2.8

M;.

PrimateAI

Uncertain

0.61

PROVEAN

Uncertain

-4.0

D;.

REVEL

Pathogenic

0.82

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.98

D;.

Vest4

0.94

MVP

0.97

MPC

0.39

ClinPred

0.038

GERP RS

5.6

Varity_R

0.72

gMVP

0.79

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