rs758361736

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_198525.3(KIF7):c.434A>C(p.Tyr145Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000135 in 1,551,662 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

KIF7
NM_198525.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:1

Conservation

PhyloP100: 6.16

Publications

1 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: Likely_pathogenic. The variant received 7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.951

PP5

Variant 15-89649836-T-G is Pathogenic according to our data. Variant chr15-89649836-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 374124.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF7	NM_198525.3 link	c.434A>C	p.Tyr145Ser	missense_variant	Exon 3 of 19	ENST00000394412.8	NP_940927.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
KIF7	ENST00000394412.8 link	c.434A>C	p.Tyr145Ser	missense_variant	Exon 3 of 19	5	NM_198525.3	ENSP00000377934.3
KIF7	ENST00000445906.1 link	n.*93A>C		non_coding_transcript_exon_variant	Exon 3 of 5	1		ENSP00000395906.1
KIF7	ENST00000445906.1 link	n.*93A>C		3_prime_UTR_variant	Exon 3 of 5	1		ENSP00000395906.1
KIF7	ENST00000696512.1 link	c.557A>C	p.Tyr186Ser	missense_variant	Exon 3 of 19			ENSP00000512678.1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152234

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000128

AC:

AN:

156816

AF XY:

0.0000241

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000329

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000136

AC:

AN:

1399428

Hom.:

Cov.:

AF XY:

0.0000159

AC XY:

AN XY:

690224

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31598

American (AMR)

AF:

0.00

AC:

AN:

35704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35738

South Asian (SAS)

AF:

0.00

AC:

AN:

79234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49288

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.0000176

AC:

AN:

1078972

Other (OTH)

AF:

0.00

AC:

AN:

58014

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

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:

0.0000131

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74360

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41468

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000383

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:3Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Acrocallosal syndrome

Pathogenic:1Uncertain:1

Oct 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces tyrosine, which is neutral and polar, with serine, which is neutral and polar, at codon 145 of the KIF7 protein (p.Tyr145Ser). This variant is present in population databases (rs758361736, gnomAD 0.003%). This missense change has been observed in individual(s) with clinical features of acrocallosal syndrome (PMID: 29286531). ClinVar contains an entry for this variant (Variation ID: 374124). 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) indicates that this missense variant is not expected to disrupt KIF7 protein function with a negative predictive value of 80%. 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. -

Institute for Genomic Statistics and Bioinformatics, University Hospital Bonn

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cerebellar ataxia;C0026838:Spasticity;C0028738:Nystagmus;C0038379:Strabismus;C0431904:Postaxial hand polydactyly;C2112129:Postaxial foot polydactyly;C3278923:Ventriculomegaly

Pathogenic:1

Nov 29, 2014

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Male infertility due to gonadal dysgenesis or sperm disorder

Pathogenic:1

Dec 01, 2023

Laan Lab, Human Genetics Research Group, University of Tartu

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

In addition, the same case carried two additional variants: SOS2 c.26A>G p.E9G and CHEK1 c.1036C>T p.Q346Ter, indicating an oligogenic effect. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.85

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.86

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.87

M_CAP

Pathogenic

0.45

MetaRNN

Pathogenic

0.95

MetaSVM

Uncertain

0.081

MutationAssessor

Pathogenic

3.0

PhyloP100

6.2

PrimateAI

Uncertain

0.79

PROVEAN

Pathogenic

-8.3

REVEL

Pathogenic

0.74

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

0.92

Vest4

0.87

MutPred

0.81

Gain of disorder (P = 0.0315);

MVP

0.87

MPC

0.054

ClinPred

0.98

GERP RS

5.0

Varity_R

0.98

gMVP

0.90

Mutation Taster

=15/85

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over