rs34425379

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_001379286.1(ZNF423):c.1655G>T(p.Gly552Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000258 in 1,614,024 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/22 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 0.0015 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00013 ( 1 hom. )

Consequence

ZNF423
NM_001379286.1 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 7.57

Publications

4 publications found

Variant links:

Genes affected

ZNF423 (HGNC:16762): (zinc finger protein 423) The protein encoded by this gene is a nuclear protein that belongs to the family of Kruppel-like C2H2 zinc finger proteins. It functions as a DNA-binding transcription factor by using distinct zinc fingers in different signaling pathways. Thus, it is thought that this gene may have multiple roles in signal transduction during development. Mutations in this gene are associated with nephronophthisis-14 and Joubert syndrome-19. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2012]

ZNF423 Gene-Disease associations (from GenCC):

nephronophthisis 14
Inheritance: AD, Unknown, AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
Joubert syndrome with oculorenal defect
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
nephronophthisis 2
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
nephronophthisis
Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ZNF423 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0060479343).

BP6

Variant 16-49637521-C-A is Benign according to our data. Variant chr16-49637521-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 197817.We mark this variant Likely_benign, oryginal submission is: [Conflicting_classifications_of_pathogenicity].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZNF423	NM_001379286.1 link	c.1655G>T	p.Gly552Val	missense_variant	Exon 4 of 8	ENST00000563137.7	NP_001366215.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZNF423	ENST00000563137.7 link	c.1655G>T	p.Gly552Val	missense_variant	Exon 4 of 8	5	NM_001379286.1	ENSP00000455588.3		A0A7P0Q1F0

Frequencies

GnomAD3 genomes

AF:

0.00143

AC:

218

AN:

152040

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00490

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

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:

0.000957

GnomAD2 exomes

AF:

0.000370

AC:

AN:

251346

AF XY:

0.000235

show subpopulations

Gnomad AFR exome

AF:

0.00468

Gnomad AMR exome

AF:

0.000405

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000134

AC:

196

AN:

1461866

Hom.:

Cov.:

AF XY:

0.000120

AC XY:

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.00445

AC:

149

AN:

33480

American (AMR)

AF:

0.000291

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000135

AC:

AN:

1112008

Other (OTH)

AF:

0.000281

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00145

AC:

221

AN:

152158

Hom.:

Cov.:

AF XY:

0.00141

AC XY:

105

AN XY:

74394

show subpopulations

African (AFR)

AF:

0.00496

AC:

206

AN:

41514

American (AMR)

AF:

0.000785

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4792

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67992

Other (OTH)

AF:

0.000947

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000590

Hom.:

Bravo

AF:

0.00155

ESP6500AA

AF:

0.00478

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000420

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Mar 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ZNF423: BP4, BS1 -

Jul 29, 2014

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The ZNF423 p.Gly427Val variant was not identified in the literature but was identified in dbSNP (ID: rs34425379), LOVD 3.0 and ClinVar (classified as uncertain significance by EGL Genetic Diagnostics and as likely benign by Invitae). The variant was identified in control databases in 136 of 282704 chromosomes at a frequency of 0.0004811 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database March 6, 2019, v2.1.1). The variant was observed in the following populations: African in 116 of 24916 chromosomes (freq: 0.004656), Other in 4 of 7216 chromosomes (freq: 0.000554), Latino in 14 of 35438 chromosomes (freq: 0.000395) and European (non-Finnish) in 2 of 129102 chromosomes (freq: 0.000015), but was not observed in the Ashkenazi Jewish, East Asian, European (Finnish), or South Asian populations. The p.Gly427 residue is conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence however three of four in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) predict a greater than 10% difference in splicing and the creation of a new 5' splice site. However, this has not been confirmed by RNA analysis and is not predictive enough to assume pathogenicity. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. -

Nephronophthisis 14

Benign:1

Jan 15, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

ZNF423-related disorder

Benign:1

May 29, 2024

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). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.25

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.089

T;.;.;T;.;.;.

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.76

.;.;.;T;.;T;T

M_CAP

Benign

0.036

MetaRNN

Benign

0.0060

T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

N;.;.;N;.;.;.

PhyloP100

7.6

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-2.2

N;N;N;N;N;N;N

REVEL

Benign

0.23

Sift

Uncertain

0.0030

D;D;D;D;D;D;D

Sift4G

Benign

0.11

T;T;T;T;T;T;T

Polyphen

0.95

P;.;.;P;.;.;.

Vest4

0.62

MVP

0.068

MPC

1.0

ClinPred

0.080

GERP RS

5.0

Varity_R

0.21

gMVP

0.59

Mutation Taster

=47/53

disease causing

(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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rs34425379

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