5-132703042-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_001300791.2(KIF3A):c.1490A>G(p.Glu497Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KIF3A NM_001300791.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.02

Genes affected

KIF3A (HGNC:6319): (kinesin family member 3A) Enables protein phosphatase binding activity; small GTPase binding activity; and spectrin binding activity. Involved in protein localization to cell junction and protein transport. Located in centriole and centrosome. Part of kinesin II complex. Colocalizes with spindle microtubule. [provided by Alliance of Genome Resources, Apr 2022]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, KIF3A
• BP4: Computational evidence support a benign effect (MetaRNN=0.29084665).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KIF3A	NM_001300791.2	c.1490A>G	p.Glu497Gly	missense_variant	13/19	ENST00000403231.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KIF3A	ENST00000403231.6	c.1490A>G	p.Glu497Gly	missense_variant	13/19	2	NM_001300791.2
	ENST00000628061.1	n.111+13208T>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 03, 2024

The c.1409A>G (p.E470G) alteration is located in exon 11 (coding exon 11) of the KIF3A gene. This alteration results from a A to G substitution at nucleotide position 1409, causing the glutamic acid (E) at amino acid position 470 to be replaced by a glycine (G). 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	0.14
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Uncertain	-0.010
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.69	D;T;T;.
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.96	D;D;D;D
M_CAP	Benign	0.041	D
MetaRNN	Benign	0.29	T;T;T;T
MetaSVM	Benign	-0.63	T
MutationAssessor	Benign	1.8	L;.;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Uncertain	-3.5	D;D;.;N
REVEL	Benign	0.20
Sift	Benign	0.13	T;T;.;T
Sift4G	Benign	0.23	T;T;T;T
Polyphen		0.42	B;.;.;B
Vest4		0.52
MutPred		0.27		.;.;.;Loss of stability (P = 0.0332);
MVP		0.39
MPC		0.84
ClinPred		0.55	D
GERP RS		6.1
Varity_R		0.27
gMVP		0.44

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

Other links and lift over

dbSNP: rs774233686; hg19: chr5-132038734;