16-88427489-C-T

Position:

chr16-88427489-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PVS1_StrongPM2PP5

The NM_001367624.2(ZNF469):c.19C>T(p.Arg7*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000159 in 1,524,624 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00035 ( 1 hom., cov: 34)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

ZNF469
NM_001367624.2 stop_gained

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:1

Conservation

PhyloP100: 3.13

Variant links:

Genes affected

ZNF469 (HGNC:23216): (zinc finger protein 469) This gene encodes a zinc-finger protein. Low-percent homology to certain collagens suggests that it may function as a transcription factor or extra-nuclear regulator factor for the synthesis or organization of collagen fibers. Mutations in this gene cause brittle cornea syndrome. [provided by RefSeq, Jul 2008]

ZNF469 links:

LOC112268182 (HGNC:):

LOC112268182 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.998 CDS is truncated, and there are 1 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-88427489-C-T is Pathogenic according to our data. Variant chr16-88427489-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 387713.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1, Likely_pathogenic=3}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ZNF469	NM_001367624.2 linkuse as main transcript	c.19C>T	p.Arg7*	stop_gained	3/3	ENST00000565624.3	NP_001354553.1
ZNF469	XM_047434810.1 linkuse as main transcript	c.19C>T	p.Arg7*	stop_gained	4/4		XP_047290766.1
LOC112268182	XR_007065178.1 linkuse as main transcript	n.251-1223G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ZNF469	ENST00000565624.3 linkuse as main transcript	c.19C>T	p.Arg7*	stop_gained	3/3	6	NM_001367624.2	ENSP00000456500.2		H3BS19
ZNF469	ENST00000437464.1 linkuse as main transcript	c.19C>T	p.Arg7*	stop_gained	1/2	5		ENSP00000402343.1		Q96JG9

Frequencies

GnomAD3 genomes

AF:

0.000348

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00461

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000192

AC:

AN:

125018

Hom.:

AF XY:

0.000176

AC XY:

AN XY:

68278

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00406

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000138

AC:

190

AN:

1372480

Hom.:

Cov.:

AF XY:

0.000123

AC XY:

AN XY:

675866

show subpopulations

Gnomad4 AFR exome

AF:

0.0000319

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00401

Gnomad4 NFE exome

AF:

0.0000383

Gnomad4 OTH exome

AF:

0.000175

GnomAD4 genome

AF:

0.000348

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.000525

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00461

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000318

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:4Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 18, 2024	This sequence change creates a premature translational stop signal (p.Arg7*) in the ZNF469 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ZNF469 are known to be pathogenic (PMID: 23642083, 23680354). This variant is present in population databases (no rsID available, gnomAD 0.4%). This variant has not been reported in the literature in individuals affected with ZNF469-related conditions. ClinVar contains an entry for this variant (Variation ID: 387713). For these reasons, this variant has been classified as Pathogenic. -
Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jul 17, 2017	The R7X likely pathogenic variant in the ZNF469 gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. This variant is predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. The R7X variant was not observed in approximately 2100 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations -

Ehlers-Danlos syndrome

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Jan 20, 2021

- -

Brittle cornea syndrome 1

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Sep 14, 2022

Variant summary: ZNF469 c.19C>T (p.Arg7X) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as likely pathogenic by our laboratory, and others are found in association with Brittle Cornea Syndrome in HGMD. The variant allele was found at a frequency of 0.00019 in 125018 control chromosomes. This frequency is not significantly higher than expected for a pathogenic variant in ZNF469 causing Brittle Cornea Syndrome 1 (0.00019 vs 0.0011). To our knowledge, no occurrence of c.19C>T in individuals affected with Brittle Cornea Syndrome 1 and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Both laboratories classified the variant as likely pathogenic. Based on the evidence outlined above, the variant was classified as likely pathogenic. -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 11, 2022

The p.R7* variant (also known as c.19C>T), located in coding exon 1 of the ZNF469 gene, results from a C to T substitution at nucleotide position 19. This changes the amino acid from an arginine to a stop codon within coding exon 1. The predicted stop codon occurs in the 5’ end of theZNF469 gene. Premature termination codons in the 5’ end of a gene have been reported to escape nonsense-mediated mRNAdecay and/or lead to re-initiation (Rivas et al. Science. 2015 May 8;348(6235):666-9; Lindeboom et al. Nat Genet. 2016 Oct;48(10):1112-8; Rhee et al. Sci Rep. 2017 May 10;7(1):1653). The exact functional effect of this alteration is unknown. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.49

CADD

Pathogenic

DANN

Uncertain

0.99

Eigen

Benign

0.10

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.42

Vest4

0.40

GERP RS

2.9

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