Genetic Variant KIF1A:p.Arg1630Leu (chr2-240719906-C-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001244008.2(KIF1A):c.4889G>T(p.Arg1630Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 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. R1630W) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Consequence

KIF1A
NM_001244008.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.76

Publications

0 publications found

Variant links:

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

KIF1A links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27955765).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001244008.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KIF1A	NM_001244008.2	MANE Select	c.4889G>T	p.Arg1630Leu	missense	Exon 46 of 49	NP_001230937.1
KIF1A	NM_001379631.1		c.4964G>T	p.Arg1655Leu	missense	Exon 46 of 49	NP_001366560.1
KIF1A	NM_001379642.1		c.4889G>T	p.Arg1630Leu	missense	Exon 46 of 49	NP_001366571.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KIF1A	ENST00000498729.9	TSL:5 MANE Select	c.4889G>T	p.Arg1630Leu	missense	Exon 46 of 49	ENSP00000438388.1
KIF1A	ENST00000460788.5	TSL:1	n.1446G>T		non_coding_transcript_exon	Exon 6 of 9
KIF1A	ENST00000492812.6	TSL:1	n.3472G>T		non_coding_transcript_exon	Exon 13 of 16

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

May 20, 2020

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.50

Eigen

Benign

-0.014

Eigen_PC

Benign

0.067

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.031

MetaRNN

Benign

0.28

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.6

PhyloP100

3.8

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-4.0

REVEL

Benign

0.083

Sift

Benign

0.058

Sift4G

Benign

0.35

Polyphen

0.77

Vest4

0.62

MutPred

0.21

Gain of relative solvent accessibility (P = 0.0166)

MVP

0.37

MPC

0.84

ClinPred

0.86

GERP RS

4.2

Varity_R

0.17

gMVP

0.48

Mutation Taster

=65/35

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over