chr15-89632900-G-A

Position:

chr15-89632900-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_198525.3(KIF7):c.2815C>T(p.Arg939Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000771 in 1,608,984 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000080 ( 1 hom. )

Consequence

KIF7
NM_198525.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 2.24

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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KIF7	NM_198525.3 link	c.2815C>T	p.Arg939Trp	missense_variant	14/19	ENST00000394412.8	NP_940927.2	Q2M1P5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
KIF7	ENST00000394412.8 link	c.2815C>T	p.Arg939Trp	missense_variant	14/19	5	NM_198525.3	ENSP00000377934.3	Q2M1P5
KIF7	ENST00000696512.1 link	c.2938C>T	p.Arg980Trp	missense_variant	14/19			ENSP00000512678.1	A0A8Q3SIQ8
KIF7	ENST00000677187.1 link	n.489C>T		non_coding_transcript_exon_variant	2/7

Frequencies

GnomAD3 genomes

AF:

0.0000531

AC:

AN:

150726

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:

0.000583

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000737

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000810

AC:

AN:

246796

Hom.:

AF XY:

0.0000374

AC XY:

AN XY:

133788

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000436

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000530

Gnomad NFE exome

AF:

0.0000622

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.0000796

AC:

116

AN:

1458146

Hom.:

Cov.:

AF XY:

0.0000868

AC XY:

AN XY:

725480

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000199

Gnomad4 NFE exome

AF:

0.0000729

Gnomad4 OTH exome

AF:

0.000414

GnomAD4 genome

AF:

0.0000530

AC:

AN:

150838

Hom.:

Cov.:

AF XY:

0.0000544

AC XY:

AN XY:

73552

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000585

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000738

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000248

Hom.:

Bravo

AF:

0.0000982

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000577

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 14, 2024

The c.2815C>T (p.R939W) alteration is located in exon 14 (coding exon 13) of the KIF7 gene. This alteration results from a C to T substitution at nucleotide position 2815, causing the arginine (R) at amino acid position 939 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Acrocallosal syndrome;C1846722:Multiple epiphyseal dysplasia, Al-Gazali type;C3279899:Hydrolethalus syndrome 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jun 12, 2024

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jun 12, 2024

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Acrocallosal syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 21, 2022

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 939 of the KIF7 protein (p.Arg939Trp). This variant is present in population databases (rs142786336, gnomAD 0.04%). 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: 531998). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.80

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.57

MetaSVM

Benign

-0.65

MutationAssessor

Uncertain

2.0

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-6.4

REVEL

Benign

0.18

Sift

Uncertain

0.014

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.71

MVP

0.72

MPC

0.14

ClinPred

0.40

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.58

gMVP

0.71

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