Genetic Variant KIF23:p.Glu41Lys (chr15-69417422-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001367805.3(KIF23):c.121G>A(p.Glu41Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000089 in 1,460,852 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

KIF23
NM_001367805.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.71

Variant links:

Genes affected

KIF23 (HGNC:6392): (kinesin family member 23) The protein encoded by this gene is a member of kinesin-like protein family. This family includes microtubule-dependent molecular motors that transport organelles within cells and move chromosomes during cell division. This protein has been shown to cross-bridge antiparallel microtubules and drive microtubule movement in vitro. Alternate splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2013]

KIF23 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF23	NM_001367805.3 link	c.121G>A	p.Glu41Lys	missense_variant	Exon 3 of 24	ENST00000679126.1	NP_001354734.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF23	ENST00000679126.1 link	c.121G>A	p.Glu41Lys	missense_variant	Exon 3 of 24		NM_001367805.3	ENSP00000504770.1		A0A7I2V5Y5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250490

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135452

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:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000890

AC:

AN:

1460852

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

726744

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:

0.0000117

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.121G>A (p.E41K) alteration is located in exon 3 (coding exon 3) of the KIF23 gene. This alteration results from a G to A substitution at nucleotide position 121, causing the glutamic acid (E) at amino acid position 41 to be replaced by a lysine (K). 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

0.30

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.030

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.22

T;T;.;T;.

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.97

.;D;D;D;D

M_CAP

Benign

0.074

MetaRNN

Uncertain

0.71

D;D;D;D;D

MetaSVM

Benign

-0.35

MutationAssessor

Benign

1.5

L;.;L;L;.

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-2.1

N;N;N;.;N

REVEL

Uncertain

0.48

Sift

Benign

0.055

T;D;T;.;T

Sift4G

Benign

0.23

T;T;T;.;T

Polyphen

1.0

D;.;D;D;.

Vest4

0.75

MutPred

0.51

Gain of methylation at E41 (P = 0.0017);Gain of methylation at E41 (P = 0.0017);Gain of methylation at E41 (P = 0.0017);Gain of methylation at E41 (P = 0.0017);Gain of methylation at E41 (P = 0.0017);

MVP

0.75

MPC

0.94

ClinPred

0.84

GERP RS

4.8

Varity_R

0.49

gMVP

0.46

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