rs147407072

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_198525.3(KIF7):c.2776C>T(p.Arg926Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000533 in 1,558,556 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. R926L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000056 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000053 ( 0 hom. )

Consequence

KIF7
NM_198525.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 6.19

Variant links:

Genes affected

KIF7 (HGNC:30497): (kinesin family member 7) This gene encodes a cilia-associated protein belonging to the kinesin family. This protein plays a role in the sonic hedgehog (SHH) signaling pathway through the regulation of GLI transcription factors. It functions as a negative regulator of the SHH pathway by preventing inappropriate activation of GLI2 in the absence of ligand, and as a positive regulator by preventing the processing of GLI3 into its repressor form. Mutations in this gene have been associated with various ciliopathies. [provided by RefSeq, Oct 2011]

KIF7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.819

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KIF7	NM_198525.3 linkuse as main transcript	c.2776C>T	p.Arg926Trp	missense_variant	14/19	ENST00000394412.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
KIF7	ENST00000394412.8 linkuse as main transcript	c.2776C>T	p.Arg926Trp	missense_variant	14/19	5	NM_198525.3	P2
KIF7	ENST00000696512.1 linkuse as main transcript	c.2899C>T	p.Arg967Trp	missense_variant	14/19			A2
KIF7	ENST00000677187.1 linkuse as main transcript	n.450C>T		non_coding_transcript_exon_variant	2/7

Frequencies

GnomAD3 genomes

AF:

0.0000565

AC:

AN:

141648

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000261

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000206

Gnomad SAS

AF:

0.000222

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000758

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000403

AC:

AN:

247870

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

134250

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.0000328

Gnomad FIN exome

AF:

0.0000517

Gnomad NFE exome

AF:

0.0000531

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000529

AC:

AN:

1416908

Hom.:

Cov.:

AF XY:

0.0000596

AC XY:

AN XY:

704484

show subpopulations

Gnomad4 AFR exome

AF:

0.0000309

Gnomad4 AMR exome

AF:

0.0000229

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000523

Gnomad4 SAS exome

AF:

0.0000233

Gnomad4 FIN exome

AF:

0.0000215

Gnomad4 NFE exome

AF:

0.0000610

Gnomad4 OTH exome

AF:

0.0000346

GnomAD4 genome

AF:

0.0000565

AC:

AN:

141648

Hom.:

Cov.:

AF XY:

0.0000442

AC XY:

AN XY:

67900

show subpopulations

Gnomad4 AFR

AF:

0.0000261

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000206

Gnomad4 SAS

AF:

0.000222

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000758

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000279

Hom.:

Bravo

AF:

0.0000302

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Acrocallosal syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Oct 17, 2022	This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 926 of the KIF7 protein (p.Arg926Trp). This variant is present in population databases (rs147407072, gnomAD 0.005%). This variant has not been reported in the literature in individuals affected with KIF7-related conditions. ClinVar contains an entry for this variant (Variation ID: 888419). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt KIF7 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.076

BayesDel_noAF

Benign

-0.18

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.79

Eigen

Pathogenic

0.72

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.16

MetaRNN

Pathogenic

0.82

MetaSVM

Benign

-0.57

MutationAssessor

Uncertain

2.3

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.71

PROVEAN

Pathogenic

-6.2

REVEL

Uncertain

0.31

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.73

MVP

0.54

MPC

0.14

ClinPred

0.91

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.82

gMVP

0.56

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