NM_198525.3:c.460C>T

Variant names:

• chr15-89649810-G-A
• rs387907044
• NM_198525.3:c.460C>T

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_198525.3(KIF7):​c.460C>T​(p.Arg154*) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000357 in 1,399,446 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: not found (cov: 33)
  • Exomes 𝑓: 0.0000036 (0 hom.)
• Consequence: KIF7 NM_198525.3 stop_gained
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 5.01
• Publications: 4 publications found

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

ACMG classification

Our verdict: Pathogenic. The variant received 12 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 15-89649810-G-A is Pathogenic according to our data. Variant chr15-89649810-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 30896.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF7	NM_198525.3	c.460C>T	p.Arg154*	stop_gained	Exon 3 of 19	ENST00000394412.8	NP_940927.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF7	ENST00000394412.8	c.460C>T	p.Arg154*	stop_gained	Exon 3 of 19	5	NM_198525.3	ENSP00000377934.3
KIF7	ENST00000445906.1	n.*119C>T		non_coding_transcript_exon_variant	Exon 3 of 5	1		ENSP00000395906.1
KIF7	ENST00000445906.1	n.*119C>T		3_prime_UTR_variant	Exon 3 of 5	1		ENSP00000395906.1
KIF7	ENST00000696512.1	c.583C>T	p.Arg195*	stop_gained	Exon 3 of 19			ENSP00000512678.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000637 AC: 1 AN: 156908 AF XY: 0.0000120

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000917

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000357 AC: 5 AN: 1399446 Hom.: 0 Cov.: 31 AF XY: 0.00000435 AC XY: 3 AN XY: 690238

African (AFR) AF: 0.0000316 AC: 1 AN: 31598

American (AMR) AF: 0.00 AC: 0 AN: 35704

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25182

East Asian (EAS) AF: 0.0000280 AC: 1 AN: 35738

South Asian (SAS) AF: 0.0000126 AC: 1 AN: 79234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49298

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5698

European-Non Finnish (NFE) AF: 0.00000185 AC: 2 AN: 1078978

Other (OTH) AF: 0.00 AC: 0 AN: 58016

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Acrocallosal syndrome Pathogenic:2

Aug 08, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Arg154*) in the KIF7 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in KIF7 are known to be pathogenic (PMID: 19666503, 21552264, 21633164, 26648833). 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 premature translational stop signal has been observed in individual(s) with clinical features of KIF7-related conditions (PMID: 21552264). ClinVar contains an entry for this variant (Variation ID: 30896). For these reasons, this variant has been classified as Pathogenic. -

Jun 01, 2011

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.63
CADD	Pathogenic	39
DANN	Uncertain	1.0
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.96	D
PhyloP100		5.0
Vest4		0.79
GERP RS		5.0
Mutation Taster		=0/200	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

Other links and lift over

dbSNP: rs387907044; hg19: chr15-90193041; COSMIC: COSV67998606;