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GeneBe

rs587777376

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_018474.6(KIZ):​c.52G>T​(p.Glu18Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000464 in 1,508,932 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000044 ( 0 hom. )

Consequence

KIZ
NM_018474.6 stop_gained

Scores

1
1
2

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 2.00
Variant links:
Genes affected
KIZ (HGNC:15865): (kizuna centrosomal protein) The protein encoded by this gene localizes to centrosomes, strengthening and stabilizing the pericentriolar region prior to spindle formation. The encoded protein usually remains with the mother centrosome after centrosomal duplication. Sevral transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2013]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 23 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 20-21126167-G-T is Pathogenic according to our data. Variant chr20-21126167-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 128242.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr20-21126167-G-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
KIZNM_018474.6 linkuse as main transcriptc.52G>T p.Glu18Ter stop_gained 1/13 ENST00000619189.5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
KIZENST00000619189.5 linkuse as main transcriptc.52G>T p.Glu18Ter stop_gained 1/131 NM_018474.6 P1Q2M2Z5-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152240
Hom.:
0
Cov.:
32
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:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000442
AC:
6
AN:
1356692
Hom.:
0
Cov.:
32
AF XY:
0.00000449
AC XY:
3
AN XY:
668280
show subpopulations
Gnomad4 AFR exome
AF:
0.00
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:
0.00
Gnomad4 NFE exome
AF:
0.00000566
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152240
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74370
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:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000378

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Retinitis pigmentosa 69 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMApr 03, 2014- -
not provided Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingInvitaeJul 03, 2023This sequence change creates a premature translational stop signal (p.Glu18*) in the KIZ gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in KIZ are known to be pathogenic (PMID: 24680887, 29057815). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with KIZ-related conditions (PMID: 24680887). ClinVar contains an entry for this variant (Variation ID: 128242). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.58
D
BayesDel_noAF
Benign
-0.39
CADD
Pathogenic
36
DANN
Benign
0.81
FATHMM_MKL
Uncertain
0.80
D
Vest4
0.68
GERP RS
4.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1

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.

Other links and lift over

dbSNP: rs587777376; hg19: chr20-21106808; API