rs672601366

Variant names:

• chr2-240786339-C-G
• rs672601366
• NM_001244008.2:c.604G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1 PM2 PP3_Moderate PP5_Moderate

The NM_001244008.2(KIF1A):​c.604G>C​(p.Ala202Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: KIF1A NM_001244008.2 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:4
• Conservation: PhyloP100: 7.71
• Publications: 9 publications found

Genes affected

KIF1A (HGNC:888): (kinesin family member 1A) The protein encoded by this gene is a member of the kinesin family and functions as an anterograde motor protein that transports membranous organelles along axonal microtubules. Mutations at this locus have been associated with spastic paraplegia-30 and hereditary sensory neuropathy IIC. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Apr 2012]

KIF1A Gene-Disease associations (from GenCC):

• intellectual disability, autosomal dominant 9

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• syndromic intellectual disability

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• neuropathy, hereditary sensory, type 2C

  Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• hereditary spastic paraplegia 30

  Inheritance: AR, AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
• autosomal dominant non-syndromic intellectual disability

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• PEHO syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary sensory and autonomic neuropathy type 2

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_001244008.2
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.906
• PP5: Variant 2-240786339-C-G is Pathogenic according to our data. Variant chr2-240786339-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 162056.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF1A	NM_001244008.2	c.604G>C	p.Ala202Pro	missense_variant	Exon 6 of 49	ENST00000498729.9	NP_001230937.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF1A	ENST00000498729.9	c.604G>C	p.Ala202Pro	missense_variant	Exon 6 of 49	5	NM_001244008.2	ENSP00000438388.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 34

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, single submitter

Submissions by phenotype

Intellectual disability, autosomal dominant 9 Pathogenic:4

Sep 29, 2014

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Jun 15, 2020

SIB Swiss Institute of Bioinformatics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: curation

This variant is interpreted as likely pathogenic for NESCAV syndrome, autosomal dominant. The following ACMG Tag(s) were applied: Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium (PM2); Assumed de novo, but no confirmation of paternity and maternity (PM6); Multiple lines of computational evidence support a deleterious effect on the gene or gene product (PP3); Missense variant in a gene that has a low rate of benign missense variation and in which missense variants are a common mechanism of disease (PP2). -

Jan 01, 2014

CHU Sainte-Justine Research Center, University of Montreal

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jun 01, 2016

Molecular Genetics Laboratory, BC Children's and BC Women's Hospitals

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.85	D;.;.;.;.;.;.;D;.;.;.;.;.
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.82	.;T;T;T;T;T;.;T;T;T;T;T;T
M_CAP	Pathogenic	0.80	D
MetaRNN	Pathogenic	0.91	D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.27	D
MutationAssessor	Pathogenic	3.1	M;M;.;.;.;.;.;M;.;.;.;M;.
PhyloP100		7.7
PrimateAI	Pathogenic	0.87	D
PROVEAN	Uncertain	-4.2	.;D;D;.;.;.;.;.;.;.;.;D;.
REVEL	Pathogenic	0.86
Sift	Uncertain	0.0040	.;D;D;.;.;.;.;.;.;.;.;D;.
Sift4G	Uncertain	0.0020	.;D;D;.;.;.;.;.;.;.;.;.;.
Polyphen		1.0	D;.;.;.;.;.;.;D;.;.;.;D;.
Vest4		0.95, 0.92
MutPred		0.52		Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);Loss of relative solvent accessibility (P = 0.0793);
MVP		0.77
MPC		2.7
ClinPred		0.99	D
GERP RS		4.4
Varity_R		0.94
gMVP		0.99
Mutation Taster		=1/99	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: rs672601366; hg19: chr2-241725756;