1-169984656-C-T

Position:

chr1-169984656-C-T

Variant summary

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

The NM_014970.4(KIFAP3):c.1319G>A(p.Arg440Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,607,466 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

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

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

KIFAP3
NM_014970.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.01

Variant links:

Genes affected

KIFAP3 (HGNC:17060): (kinesin associated protein 3) The small G protein GDP dissociation stimulator (smg GDS) is a regulator protein having two activities on a group of small G proteins including the Rho and Rap1 family members and Ki-Ras; one is to stimulate their GDP/GTP exchange reactions, and the other is to inhibit their interactions with membranes. The protein encoded by this gene contains 9 'Armadillo' repeats and interacts with the smg GDS protein through these repeats. This protein, which is highly concentrated around the endoplasmic reticulum, is phosphorylated by v-src, and this phosphorylation reduces the affinity of the protein for smg GDS. It is thought that this protein serves as a linker between human chromosome-associated polypeptide (HCAP) and KIF3A/B, a kinesin superfamily protein in the nucleus, and that it plays a role in the interaction of chromosomes with an ATPase motor protein. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2011]

KIFAP3 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=0.15713611).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KIFAP3	NM_014970.4 linkuse as main transcript	c.1319G>A	p.Arg440Gln	missense_variant	12/20	ENST00000361580.7	NP_055785.2	Q92845-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
KIFAP3	ENST00000361580.7 linkuse as main transcript	c.1319G>A	p.Arg440Gln	missense_variant	12/20	1	NM_014970.4	ENSP00000354560.2	Q92845-1
KIFAP3	ENST00000367767.5 linkuse as main transcript	c.1187G>A	p.Arg396Gln	missense_variant	11/19	1		ENSP00000356741.1	Q92845-2
KIFAP3	ENST00000367765.5 linkuse as main transcript	c.1199G>A	p.Arg400Gln	missense_variant	12/20	2		ENSP00000356739.1	Q92845-3
KIFAP3	ENST00000538366.5 linkuse as main transcript	c.1085G>A	p.Arg362Gln	missense_variant	13/21	2		ENSP00000444622.1	Q92845-4

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151774

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249270

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134802

show subpopulations

Gnomad AFR exome

AF:

0.0000619

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:

0.0000131

AC:

AN:

1455692

Hom.:

Cov.:

AF XY:

0.0000152

AC XY:

AN XY:

724388

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:

0.0000234

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000153

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151774

Hom.:

Cov.:

AF XY:

0.0000270

AC XY:

AN XY:

74130

show subpopulations

Gnomad4 AFR

AF:

0.0000242

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:

0.0000295

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000659

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.00000824

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

Sep 27, 2024

The c.1319G>A (p.R440Q) alteration is located in exon 12 (coding exon 12) of the KIFAP3 gene. This alteration results from a G to A substitution at nucleotide position 1319, causing the arginine (R) at amino acid position 440 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

0.094

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.082

.;.;T;.

Eigen

Benign

0.042

Eigen_PC

Benign

0.20

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.94

D;D;D;D

M_CAP

Benign

0.0071

MetaRNN

Benign

0.16

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.86

.;.;L;.

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.88

N;N;N;N

REVEL

Benign

0.080

Sift

Benign

0.36

T;T;T;T

Sift4G

Benign

0.44

T;T;T;T

Polyphen

0.28

.;.;B;.

Vest4

0.25

MVP

0.44

MPC

0.39

ClinPred

0.21

GERP RS

5.3

Varity_R

0.13

gMVP

0.18

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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