chr1-169954029-T-C

Position:

chr1-169954029-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The ENST00000361580.7(KIFAP3):c.2255A>G(p.Gln752Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,612,828 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

KIFAP3
ENST00000361580.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.74

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 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2904514).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KIFAP3	NM_014970.4 linkuse as main transcript	c.2255A>G	p.Gln752Arg	missense_variant	19/20	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.2255A>G	p.Gln752Arg	missense_variant	19/20	1	NM_014970.4	ENSP00000354560.2	Q92845-1
KIFAP3	ENST00000367767.5 linkuse as main transcript	c.2123A>G	p.Gln708Arg	missense_variant	18/19	1		ENSP00000356741.1	Q92845-2
KIFAP3	ENST00000367765.5 linkuse as main transcript	c.2135A>G	p.Gln712Arg	missense_variant	19/20	2		ENSP00000356739.1	Q92845-3
KIFAP3	ENST00000538366.5 linkuse as main transcript	c.2021A>G	p.Gln674Arg	missense_variant	20/21	2		ENSP00000444622.1	Q92845-4

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152110

Hom.:

Cov.:

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:

0.000189

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.0000278

AC:

AN:

251412

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135872

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:

0.0000327

Gnomad FIN exome

AF:

0.000231

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000822

AC:

AN:

1460600

Hom.:

Cov.:

AF XY:

0.00000826

AC XY:

AN XY:

726708

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:

0.0000116

Gnomad4 FIN exome

AF:

0.000169

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74446

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:

0.000189

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000947

Bravo

AF:

0.00000378

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

Apr 08, 2022

The c.2255A>G (p.Q752R) alteration is located in exon 19 (coding exon 19) of the KIFAP3 gene. This alteration results from a A to G substitution at nucleotide position 2255, causing the glutamine (Q) at amino acid position 752 to be replaced by an arginine (R). 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

0.15

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.33

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.088

.;.;T;.

Eigen

Benign

-0.12

Eigen_PC

Benign

0.083

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.85

T;T;T;T

M_CAP

Benign

0.0066

MetaRNN

Benign

0.29

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.14

.;.;N;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-0.52

N;N;N;N

REVEL

Benign

0.17

Sift

Benign

0.61

T;T;T;T

Sift4G

Benign

0.69

T;T;T;T

Polyphen

0.0

.;.;B;.

Vest4

0.65

MVP

0.45

MPC

0.35

ClinPred

0.20

GERP RS

5.3

Varity_R

0.083

gMVP

0.84

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