chr2-240719065-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_001244008.2(KIF1A):c.5155G>A(p.Val1719Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000114 in 1,612,306 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

KIF1A
NM_001244008.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:2

Conservation

PhyloP100: 1.59

Publications

4 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, G2P, Labcorp Genetics (formerly Invitae)
syndromic intellectual disability
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
neuropathy, hereditary sensory, type 2C
Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
hereditary spastic paraplegia 30
Inheritance: AR, AD Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.036414057).

BS1

Variant frequency is greater than expected in population amr. GnomAdExome4 allele frequency = 0.000105 (154/1460118) while in subpopulation AMR AF = 0.00163 (73/44652). AF 95% confidence interval is 0.00133. There are 0 homozygotes in GnomAdExome4. There are 77 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

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	UniProt
KIF1A	NM_001244008.2	MANE Select	c.5155G>A	p.Val1719Met	missense	Exon 47 of 49	NP_001230937.1	Q12756-3
KIF1A	NM_001379631.1		c.5230G>A	p.Val1744Met	missense	Exon 47 of 49	NP_001366560.1
KIF1A	NM_001379642.1		c.5155G>A	p.Val1719Met	missense	Exon 47 of 49	NP_001366571.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KIF1A	ENST00000498729.9	TSL:5 MANE Select	c.5155G>A	p.Val1719Met	missense	Exon 47 of 49	ENSP00000438388.1	Q12756-3
KIF1A	ENST00000460788.5	TSL:1	n.1712G>A		non_coding_transcript_exon	Exon 7 of 9
KIF1A	ENST00000492812.6	TSL:1	n.3738G>A		non_coding_transcript_exon	Exon 14 of 16

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000458

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000322

AC:

AN:

248418

AF XY:

0.000245

show subpopulations

Gnomad AFR exome

AF:

0.000257

Gnomad AMR exome

AF:

0.00201

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000445

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000105

AC:

154

AN:

1460118

Hom.:

Cov.:

AF XY:

0.000106

AC XY:

AN XY:

726322

show subpopulations

African (AFR)

AF:

0.000388

AC:

AN:

33476

American (AMR)

AF:

0.00163

AC:

AN:

44652

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.00

AC:

AN:

86176

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52244

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000549

AC:

AN:

1111656

Other (OTH)

AF:

0.0000994

AC:

AN:

60340

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

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:

0.000191

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74342

show subpopulations

African (AFR)

AF:

0.000458

AC:

AN:

41458

American (AMR)

AF:

0.000327

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68012

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000147

Hom.:

Bravo

AF:

0.000370

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000230

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

Hereditary spastic paraplegia 30 (1)

History of neurodevelopmental disorder (1)

KIF1A-related disorder (1)

Neuropathy, hereditary sensory, type 2C;C5235139:Hereditary spastic paraplegia 30;C5393830:Intellectual disability, autosomal dominant 9 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.46

Eigen

Benign

0.077

Eigen_PC

Benign

0.037

FATHMM_MKL

Benign

0.41

LIST_S2

Pathogenic

0.98

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.036

MetaSVM

Benign

-0.41

MutationAssessor

Benign

1.9

PhyloP100

1.6

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-1.6

REVEL

Benign

0.24

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.011

Polyphen

0.88

Vest4

0.54

MVP

0.39

MPC

0.93

ClinPred

0.048

GERP RS

1.7

Varity_R

0.14

gMVP

0.26

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over