Variant 1-46549224-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001322255.2(KNCN):c.264A>C(p.Glu88Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,260 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

KNCN
NM_001322255.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.274

Variant links:

Genes affected

KNCN (HGNC:26488): (kinocilin) Predicted to be located in apical part of cell; cytoplasm; and microtubule cytoskeleton. Predicted to be active in several cellular components, including apical plasma membrane; cytoskeleton; and kinocilium. [provided by Alliance of Genome Resources, Apr 2022]

KNCN links:

KNCN (HGNC:):

KNCN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13168272).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KNCN	NM_001322255.2 linkuse as main transcript	c.264A>C	p.Glu88Asp	missense_variant	3/4	ENST00000481882.7	NP_001309184.1	A6PVL3-1
KNCN	NM_001097611.1 linkuse as main transcript	c.195A>C	p.Glu65Asp	missense_variant	2/3		NP_001091080.1	A6PVL3-2
MKNK1-AS1	NR_038403.1 linkuse as main transcript	n.254+5456T>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KNCN	ENST00000481882.7 linkuse as main transcript	c.264A>C	p.Glu88Asp	missense_variant	3/4	5	NM_001322255.2	ENSP00000419705.3		A6PVL3-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152098

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

248444

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134814

show subpopulations

Gnomad AFR exome

AF:

0.0000648

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:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461162

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726870

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152098

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.0000724

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.00000827

AC:

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

May 09, 2022

The c.195A>C (p.E65D) alteration is located in exon 2 (coding exon 2) of the KNCN gene. This alteration results from a A to C substitution at nucleotide position 195, causing the glutamic acid (E) at amino acid position 65 to be replaced by an aspartic acid (D). 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

0.12

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0082

T;.

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.24

FATHMM_MKL

Benign

0.41

LIST_S2

Benign

0.75

T;T

M_CAP

Benign

0.0047

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-1.1

MutationTaster

Benign

0.99

N;N

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.3

N;N

REVEL

Benign

0.16

Sift

Benign

0.13

T;D

Sift4G

Pathogenic

0.0

D;T

Polyphen

0.66

.;P

Vest4

0.31

MutPred

0.039

.;Gain of glycosylation at S69 (P = 0.2107);

MVP

0.014

MPC

0.083

ClinPred

0.77

GERP RS

1.4

Varity_R

0.067

gMVP

0.079

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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