chr15-89633205-G-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_198525.3(KIF7):c.2654C>A(p.Ala885Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000005 in 1,600,668 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. A885V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

KIF7
NM_198525.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 8.01

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

acrocallosal syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
neurodevelopmental disorder
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
hydrolethalus syndrome 2
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
hydrolethalus syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
multiple epiphyseal dysplasia, Al-Gazali type
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
orofaciodigital syndrome type 6
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

KIF7 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198525.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KIF7	NM_198525.3	MANE Select	c.2654C>A	p.Ala885Glu	missense	Exon 13 of 19	NP_940927.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KIF7	ENST00000394412.8	TSL:5 MANE Select	c.2654C>A	p.Ala885Glu	missense	Exon 13 of 19	ENSP00000377934.3
KIF7	ENST00000696512.1		c.2777C>A	p.Ala926Glu	missense	Exon 13 of 19	ENSP00000512678.1
KIF7	ENST00000677187.1		n.328C>A		non_coding_transcript_exon	Exon 1 of 7

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000216

AC:

AN:

231516

AF XY:

0.0000160

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000603

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000285

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000483

AC:

AN:

1448508

Hom.:

Cov.:

AF XY:

0.00000417

AC XY:

AN XY:

719948

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33332

American (AMR)

AF:

0.0000458

AC:

AN:

43672

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25878

East Asian (EAS)

AF:

0.00

AC:

AN:

39430

South Asian (SAS)

AF:

0.00

AC:

AN:

84660

European-Finnish (FIN)

AF:

0.0000210

AC:

AN:

47566

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5536

European-Non Finnish (NFE)

AF:

0.00000361

AC:

AN:

1108394

Other (OTH)

AF:

0.00

AC:

AN:

60040

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152160

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74338

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41444

American (AMR)

AF:

0.0000655

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

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

Uncertain:1

Jan 12, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not provided

Uncertain:1

Oct 07, 2019

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge

Acrocallosal syndrome

Uncertain:1

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 885 of the KIF7 protein (p.Ala885Glu). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. 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: 1303361). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on 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.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.86

BayesDel_addAF

Benign

-0.031

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.30

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.045

MetaRNN

Uncertain

0.57

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.2

PhyloP100

8.0

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-2.7

REVEL

Uncertain

0.31

Sift

Benign

0.27

Sift4G

Benign

0.12

Polyphen

1.0

Vest4

0.63

MutPred

0.21

Gain of ubiquitination at K890 (P = 0.0185)

MVP

0.72

MPC

0.14

ClinPred

0.57

GERP RS

5.0

Varity_R

0.56

gMVP

0.45

Mutation Taster

=53/47

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over