3-138062820-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PVS1_ModerateBS1_SupportingBS2

The NM_173543.3(DZIP1L):c.2300G>A(p.Trp767*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000263 in 1,613,906 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 2 hom. )

Consequence

DZIP1L
NM_173543.3 stop_gained

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 3.55

Variant links:

Genes affected

DZIP1L (HGNC:26551): (DAZ interacting zinc finger protein 1 like) Predicted to enable metal ion binding activity. Involved in cilium assembly and regulation of protein localization. Located in ciliary basal body. Colocalizes with centriole. Implicated in polycystic kidney disease 5. [provided by Alliance of Genome Resources, Apr 2022]

DZIP1L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 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 0.00174 CDS is truncated, and there are 0 pathogenic variants in the truncated region.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000269 (41/152328) while in subpopulation NFE AF= 0.000456 (31/68040). AF 95% confidence interval is 0.000329. There are 0 homozygotes in gnomad4. There are 23 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DZIP1L	NM_173543.3 link	c.2300G>A	p.Trp767*	stop_gained	Exon 16 of 16	ENST00000327532.7	NP_775814.2	Q8IYY4-1
DZIP1L	XM_005247198.4 link	c.2384G>A	p.Trp795*	stop_gained	Exon 16 of 16		XP_005247255.1
DZIP1L	XM_047447642.1 link	c.2243G>A	p.Trp748*	stop_gained	Exon 15 of 15		XP_047303598.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DZIP1L	ENST00000327532.7 link	c.2300G>A	p.Trp767*	stop_gained	Exon 16 of 16	1	NM_173543.3	ENSP00000332148.2		Q8IYY4-1

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.000754

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000456

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000263

AC:

AN:

251170

Hom.:

AF XY:

0.000250

AC XY:

AN XY:

135736

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:

0.000925

Gnomad NFE exome

AF:

0.000388

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000263

AC:

384

AN:

1461578

Hom.:

Cov.:

AF XY:

0.000254

AC XY:

185

AN XY:

727096

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000786

Gnomad4 NFE exome

AF:

0.000300

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000269

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000754

Gnomad4 NFE

AF:

0.000456

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000363

Hom.:

Bravo

AF:

0.000170

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000222

AC:

EpiCase

AF:

0.000763

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

May 23, 2022

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Nonsense variant predicted to result in protein truncation as the last 1 amino acids are lost, although loss-of-function variants have not been reported downstream of this position in the protein; Has not been previously published as pathogenic or benign to our knowledge -

Feb 22, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Trp767*) in the DZIP1L gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 1 amino acid(s) of the DZIP1L protein. This variant is present in population databases (rs200902457, gnomAD 0.09%). This variant has not been reported in the literature in individuals affected with DZIP1L-related conditions. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

DZIP1L-related disorder

Uncertain:1

Jul 17, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The DZIP1L c.2300G>A variant is predicted to result in premature protein termination (p.Trp767*). Of note, the normal protein terminates at codon 768. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.088% of alleles in individuals of European (Finnish) descent in gnomAD v2.1.1 (as displayed in the table above). However, in gnomAD v4.1.0 (available only on GRCh38), there are two homozygotes of this variant. Although we suspect this variant is benign, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.60

CADD

Pathogenic

DANN

Uncertain

0.99

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.96

Vest4

0.097

GERP RS

4.6

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