1-15112518-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_201628.3(KAZN):c.2140G>A(p.Gly714Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000685 in 1,604,994 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G714C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000067 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

KAZN
NM_201628.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.01

Variant links:

Genes affected

KAZN (HGNC:29173): (kazrin, periplakin interacting protein) This gene encodes a protein that plays a role in desmosome assembly, cell adhesion, cytoskeletal organization, and epidermal differentiation. This protein co-localizes with desmoplakin and the cytolinker protein periplakin. In general, this protein localizes to the nucleus, desmosomes, cell membrane, and cortical actin-based structures. Some isoforms of this protein also associate with microtubules. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Additional splice variants have been described but their biological validity has not been verified. [provided by RefSeq, Aug 2011]

KAZN links:

TMEM51-AS1 (HGNC:26301): (TMEM51 antisense RNA 1)

TMEM51-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05299464).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KAZN	NM_201628.3 linkuse as main transcript	c.2140G>A	p.Gly714Ser	missense_variant	14/15	ENST00000376030.7
TMEM51-AS1	NR_027136.1 linkuse as main transcript	n.6276C>T		non_coding_transcript_exon_variant	5/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KAZN	ENST00000376030.7 linkuse as main transcript	c.2140G>A	p.Gly714Ser	missense_variant	14/15	5	NM_201628.3	P2	Q674X7-1
TMEM51-AS1	ENST00000310916.6 linkuse as main transcript	n.6397C>T		non_coding_transcript_exon_variant	6/6	2
TMEM51-AS1	ENST00000404665.4 linkuse as main transcript	n.6270C>T		non_coding_transcript_exon_variant	5/5	1
KAZN	ENST00000636203.1 linkuse as main transcript	c.2404G>A	p.Gly802Ser	missense_variant	16/17	5		A2

Frequencies

GnomAD3 genomes

AF:

0.00000666

AC:

AN:

150066

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000687

AC:

AN:

1454928

Hom.:

Cov.:

AF XY:

0.00000692

AC XY:

AN XY:

722832

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:

0.0000119

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000811

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000666

AC:

AN:

150066

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73202

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:

0.0000148

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 14, 2023

The c.2140G>A (p.G714S) alteration is located in exon 14 (coding exon 14) of the KAZN gene. This alteration results from a G to A substitution at nucleotide position 2140, causing the glycine (G) at amino acid position 714 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.58

Cadd

Benign

Dann

Benign

0.93

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.020

LIST_S2

Benign

0.72

T;T

M_CAP

Benign

0.0039

MetaRNN

Benign

0.053

T;T

MetaSVM

Benign

-0.96

MutationTaster

Benign

1.0

PrimateAI

Benign

0.33

Polyphen

0.0

.;B

Vest4

0.11

MutPred

0.091

.;Gain of phosphorylation at G714 (P = 0.0206);

MVP

0.055

MPC

0.079

ClinPred

0.11

GERP RS

-0.57

Varity_R

0.042

gMVP

0.24

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