X-70353686-G-C

Variant names:

• chrX-70353686-G-C
• rs766819113
• NM_012310.5:c.1553G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_012310.5(KIF4A):​c.1553G>C​(p.Arg518Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. R518H) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 23)
• Consequence: KIF4A NM_012310.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.10
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• intellectual disability, X-linked 100

  Inheritance: Unknown, XL Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Illumina, G2P, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012310.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KIF4A	NM_012310.5	MANE Select	c.1553G>C	p.Arg518Pro	missense	Exon 15 of 31	NP_036442.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KIF4A	ENST00000374403.4	TSL:1 MANE Select	c.1553G>C	p.Arg518Pro	missense	Exon 15 of 31	ENSP00000363524.3

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 23

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Pes planus;C0018418:Gynecomastia;C0026827:Hypotonia;C0028754:Obesity;C0037317:Sleep abnormality;C0271385:Horizontal nystagmus;C0311394:Difficulty walking;C0454644:Delayed speech and language development;C1848453:Poor motor coordination;C1858120:Generalized hypotonia Uncertain:1

Jan 01, 2017

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.94
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.57	D
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.88	D
M_CAP	Uncertain	0.17	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Uncertain	-0.14	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		5.1
PrimateAI	Benign	0.48	T
PROVEAN	Pathogenic	-4.7	D
REVEL	Uncertain	0.45
Sift	Uncertain	0.010	D
Sift4G	Uncertain	0.014	D
Polyphen		0.97	D
Vest4		0.47
MutPred		0.34		Loss of MoRF binding (P = 0.005)
MVP		0.89
MPC		1.2
ClinPred		0.99	D
GERP RS		4.0
Varity_R		0.87
gMVP		0.86
Mutation Taster		=62/38	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs766819113; hg19: chrX-69573536;