2-240783058-C-T

Position:

chr2-240783058-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PP2PP3_Moderate

The NM_001244008.2(KIF1A):c.850G>A(p.Ala284Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000359 in 1,613,396 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

KIF1A
NM_001244008.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 7.70

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 links:

KIF1A (HGNC:):

KIF1A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), KIF1A. . Gene score misZ 5.1579 (greater than the threshold 3.09). Trascript score misZ 5.0191 (greater than threshold 3.09). GenCC has associacion of gene with neuropathy, hereditary sensory, type 2C, hereditary spastic paraplegia 30, syndromic intellectual disability, intellectual disability, autosomal dominant 9, PEHO syndrome, autosomal dominant non-syndromic intellectual disability, hereditary sensory and autonomic neuropathy type 2.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.892

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KIF1A	NM_001244008.2 linkuse as main transcript	c.850G>A	p.Ala284Thr	missense_variant	9/49	ENST00000498729.9	NP_001230937.1	Q12756-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KIF1A	ENST00000498729.9 linkuse as main transcript	c.850G>A	p.Ala284Thr	missense_variant	9/49	5	NM_001244008.2	ENSP00000438388.1		Q12756-3

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

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

GnomAD3 exomes

AF:

0.0000563

AC:

AN:

248642

Hom.:

AF XY:

0.0000592

AC XY:

AN XY:

135138

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000356

AC:

AN:

1461214

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

726934

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000291

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000252

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74336

show subpopulations

Gnomad4 AFR

AF:

0.0000966

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.0000907

ExAC

AF:

0.0000331

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 20, 2017

The p.A284T variant (also known as c.850G>A), located in coding exon 8 of the KIF1A gene, results from a G to A substitution at nucleotide position 850. The alanine at codon 284 is replaced by threonine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Intellectual disability, autosomal dominant 9

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Apr 05, 2019

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Mar 23, 2022

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26125038, 21820098, 21376300) -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 02, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.76

BayesDel_addAF

Uncertain

0.046

BayesDel_noAF

Uncertain

0.13

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.79

D;.;.;.;.;.;.;D;.;.;.;.;.

Eigen

Uncertain

0.41

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.93

.;D;D;D;D;D;.;D;D;D;D;D;D

M_CAP

Pathogenic

0.46

MetaRNN

Pathogenic

0.89

D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

0.019

MutationAssessor

Uncertain

2.1

M;M;.;.;.;.;.;M;.;.;.;M;.

PrimateAI

Pathogenic

0.88

PROVEAN

Uncertain

-2.8

.;D;D;.;.;.;.;.;.;.;.;D;.

REVEL

Pathogenic

0.81

Sift

Uncertain

0.0020

.;D;D;.;.;.;.;.;.;.;.;D;.

Sift4G

Uncertain

0.0040

.;D;D;.;.;.;.;.;.;.;.;.;.

Polyphen

0.92

P;.;.;.;.;.;.;P;.;.;.;P;.

Vest4

0.82, 0.90

MutPred

0.86

Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);Loss of ubiquitination at K280 (P = 0.0739);

MVP

0.88

MPC

1.4

ClinPred

0.39

GERP RS

3.8

Varity_R

0.46

gMVP

0.97

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over