rs202229910

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_198525.3(KIF7):​c.2917C>T​(p.Arg973*) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000045 in 1,555,514 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 Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 34)
Exomes 𝑓: 0.0000036 ( 0 hom. )

Consequence

KIF7
NM_198525.3 stop_gained

Scores

4
2
1

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 4.66

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 15-89631689-G-A is Pathogenic according to our data. Variant chr15-89631689-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 217671.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KIF7NM_198525.3 linkc.2917C>T p.Arg973* stop_gained Exon 15 of 19 ENST00000394412.8 NP_940927.2 Q2M1P5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KIF7ENST00000394412.8 linkc.2917C>T p.Arg973* stop_gained Exon 15 of 19 5 NM_198525.3 ENSP00000377934.3 Q2M1P5
KIF7ENST00000696512.1 linkc.3040C>T p.Arg1014* stop_gained Exon 15 of 19 ENSP00000512678.1 A0A8Q3SIQ8
KIF7ENST00000677187.1 linkn.591C>T non_coding_transcript_exon_variant Exon 3 of 7

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152218
Hom.:
0
Cov.:
34
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:
0.0000123
AC:
2
AN:
162808
AF XY:
0.0000115
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000385
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000356
AC:
5
AN:
1403296
Hom.:
0
Cov.:
39
AF XY:
0.00000433
AC XY:
3
AN XY:
692554
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31806
American (AMR)
AF:
0.0000270
AC:
1
AN:
37058
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25246
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36096
South Asian (SAS)
AF:
0.0000125
AC:
1
AN:
79778
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49018
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5696
European-Non Finnish (NFE)
AF:
0.00000278
AC:
3
AN:
1080492
Other (OTH)
AF:
0.00
AC:
0
AN:
58106
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.515
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
2
AN:
152218
Hom.:
0
Cov.:
34
AF XY:
0.0000269
AC XY:
2
AN XY:
74362
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41466
American (AMR)
AF:
0.00
AC:
0
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5194
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68030
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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.:
0
ExAC
AF:
0.0000263
AC:
3

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Acrocallosal syndrome Pathogenic:2
Jun 19, 2018
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

For these reasons, this variant has been classified as Pathogenic. Loss-of-function variants in KIF7 are known to be pathogenic (PMID: 19666503, 21552264, 21633164, 26648833). This variant has been observed in an individual affected with Joubert syndrome (PMID: 26092869). ClinVar contains an entry for this variant (Variation ID: 217671). This variant is present in population databases (rs202229910, ExAC 0.1%). This sequence change creates a premature translational stop signal (p.Arg973*) in the KIF7 gene. It is expected to result in an absent or disrupted protein product. -

Feb 23, 2015
UW Hindbrain Malformation Research Program, University of Washington
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:research

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.54
D
BayesDel_noAF
Pathogenic
0.52
CADD
Pathogenic
51
DANN
Uncertain
1.0
Eigen
Pathogenic
0.91
Eigen_PC
Pathogenic
0.77
FATHMM_MKL
Uncertain
0.90
D
PhyloP100
4.7
Vest4
0.83
GERP RS
5.2
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Mutation Taster
=2/198
disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs202229910; hg19: chr15-90174920; COSMIC: COSV51540008; COSMIC: COSV51540008; API