Genetic Variant NPHP4:p.Gln569Glu (chr1-5905690-G-C) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_015102.5(NPHP4):c.1705C>G(p.Gln569Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000775 in 1,613,932 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0042 ( 5 hom., cov: 32)

Exomes 𝑓: 0.00042 ( 5 hom. )

Consequence

NPHP4
NM_015102.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 5.90

Publications

5 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 -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008204877).

BP6

Variant 1-5905690-G-C is Benign according to our data. Variant chr1-5905690-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 235419.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00415 (633/152366) while in subpopulation AFR AF = 0.0144 (599/41584). AF 95% confidence interval is 0.0134. There are 5 homozygotes in GnomAd4. There are 303 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 5 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015102.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
NPHP4	NM_015102.5	MANE Select	c.1705C>G	p.Gln569Glu	missense	Exon 14 of 30	NP_055917.1
NPHP4	NM_001291594.2		c.169C>G	p.Gln57Glu	missense	Exon 10 of 26	NP_001278523.1
NPHP4	NM_001291593.2		c.166C>G	p.Gln56Glu	missense	Exon 11 of 27	NP_001278522.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
NPHP4	ENST00000378156.9	TSL:1 MANE Select	c.1705C>G	p.Gln569Glu	missense	Exon 14 of 30	ENSP00000367398.4
NPHP4	ENST00000378169.7	TSL:1	n.*606C>G		non_coding_transcript_exon	Exon 11 of 27	ENSP00000367411.3
NPHP4	ENST00000489180.6	TSL:2	n.1702C>G		non_coding_transcript_exon	Exon 14 of 33	ENSP00000423747.1

Frequencies

GnomAD3 genomes

AF:

0.00408

AC:

621

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0142

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00170

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:

0.00334

GnomAD2 exomes

AF:

0.00101

AC:

252

AN:

248836

AF XY:

0.000748

show subpopulations

Gnomad AFR exome

AF:

0.0144

Gnomad AMR exome

AF:

0.000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000354

Gnomad OTH exome

AF:

0.000661

GnomAD4 exome

AF:

0.000423

AC:

618

AN:

1461566

Hom.:

Cov.:

AF XY:

0.000378

AC XY:

275

AN XY:

727056

show subpopulations

African (AFR)

AF:

0.0135

AC:

451

AN:

33476

American (AMR)

AF:

0.000760

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.000139

AC:

AN:

86210

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.000867

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000809

AC:

AN:

1111814

Other (OTH)

AF:

0.00177

AC:

107

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

131

164

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.00415

AC:

633

AN:

152366

Hom.:

Cov.:

AF XY:

0.00407

AC XY:

303

AN XY:

74510

show subpopulations

African (AFR)

AF:

0.0144

AC:

599

AN:

41584

American (AMR)

AF:

0.00170

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68032

Other (OTH)

AF:

0.00331

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

125

156

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:

0.00127

Hom.:

Bravo

AF:

0.00454

ESP6500AA

AF:

0.0128

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00131

AC:

159

Asia WGS

AF:

0.00433

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

PreventionGenetics, part of Exact Sciences

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

not provided

Benign:2

Aug 25, 2015

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

Senior-Loken syndrome 4

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance:Benign

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). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.

Nephronophthisis

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Nephronophthisis 4

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance:Benign

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. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.23

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.17

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.85

MetaRNN

Benign

0.0082

MetaSVM

Uncertain

-0.11

MutationAssessor

Uncertain

2.7

PhyloP100

5.9

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.2

REVEL

Uncertain

0.31

Sift

Benign

0.33

Sift4G

Uncertain

0.035

Polyphen

0.60

Vest4

0.24

MVP

0.93

MPC

0.19

ClinPred

0.026

GERP RS

5.4

Varity_R

0.15

gMVP

0.45

Mutation Taster

=98/2

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over