Genetic Variant NM_012310.5:c.670A>C (chrX-70302053-A-C) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_012310.5(KIF4A):c.670A>C(p.Lys224Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000422 in 1,209,421 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 13 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000036 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000043 ( 0 hom. 12 hem. )

Consequence

KIF4A
NM_012310.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.51

Variant links:

Genes affected

KIF4A (HGNC:13339): (kinesin family member 4A) This gene encodes a member of the kinesin 4 subfamily of kinesin related proteins. The encoded protein is an ATP dependent microtubule-based motor protein that is involved in the intracellular transport of membranous organelles. This protein also associates with condensed chromosome arms and may be involved in maintaining chromosome integrity during mitosis. This protein may also be involved in the organization of the central spindle prior to cytokinesis. A pseudogene of this gene is found on chromosome X.[provided by RefSeq, Mar 2010]

KIF4A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.26861358).

BS2

High Hemizygotes in GnomAdExome4 at 12 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF4A	NM_012310.5 link	c.670A>C	p.Lys224Gln	missense_variant	Exon 6 of 31	ENST00000374403.4	NP_036442.3	O95239-1Q59HG1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF4A	ENST00000374403.4 link	c.670A>C	p.Lys224Gln	missense_variant	Exon 6 of 31	1	NM_012310.5	ENSP00000363524.3		O95239-1

Frequencies

GnomAD3 genomes

AF:

0.0000356

AC:

AN:

112392

Hom.:

Cov.:

AF XY:

0.0000290

AC XY:

AN XY:

34536

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:

0.0000750

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000276

AC:

AN:

181140

Hom.:

AF XY:

0.0000304

AC XY:

AN XY:

65824

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:

0.0000616

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000428

AC:

AN:

1097029

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

362455

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:

0.0000558

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000356

AC:

AN:

112392

Hom.:

Cov.:

AF XY:

0.0000290

AC XY:

AN XY:

34536

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:

0.0000750

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000302

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 03, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.670A>C (p.K224Q) alteration is located in exon 6 (coding exon 5) of the KIF4A gene. This alteration results from a A to C substitution at nucleotide position 670, causing the lysine (K) at amino acid position 224 to be replaced by a glutamine (Q). 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

0.090

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.38

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.28

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.87

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.27

MetaSVM

Uncertain

-0.28

MutationAssessor

Benign

0.45

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-2.1

REVEL

Benign

0.26

Sift

Benign

0.13

Sift4G

Benign

0.24

Polyphen

0.44

Vest4

0.23

MutPred

0.35

Loss of sheet (P = 0.0104);

MVP

0.92

MPC

2.2

ClinPred

0.25

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.46

gMVP

0.55

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