rs148934699

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_006612.6(KIF1C):c.2099C>T(p.Pro700Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00479 in 1,614,030 control chromosomes in the GnomAD database, including 30 homozygotes. 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 0.0032 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0050 ( 30 hom. )

Consequence

KIF1C
NM_006612.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:7

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

KIF1C (HGNC:6317): (kinesin family member 1C) The protein encoded by this gene is a member of the kinesin-like protein family. The family members are microtubule-dependent molecular motors that transport organelles within cells and move chromosomes during cell division. Mutations in this gene are a cause of spastic ataxia 2, autosomal recessive. [provided by RefSeq, May 2014]

KIF1C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0282045).

BP6

Variant 17-5022180-C-T is Benign according to our data. Variant chr17-5022180-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 209166.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Benign=1, Uncertain_significance=2}. Variant chr17-5022180-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0032 (488/152352) while in subpopulation NFE AF= 0.00541 (368/68030). AF 95% confidence interval is 0.00495. There are 0 homozygotes in gnomad4. There are 233 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 30 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF1C	NM_006612.6 link	c.2099C>T	p.Pro700Leu	missense_variant	Exon 22 of 23	ENST00000320785.10	NP_006603.2	O43896
KIF1C	XM_005256424.3 link	c.2099C>T	p.Pro700Leu	missense_variant	Exon 23 of 24		XP_005256481.1	O43896

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF1C	ENST00000320785.10 link	c.2099C>T	p.Pro700Leu	missense_variant	Exon 22 of 23	1	NM_006612.6	ENSP00000320821.5		O43896
KIF1C	ENST00000573815.1 link	n.641C>T		non_coding_transcript_exon_variant	Exon 6 of 6	5

Frequencies

GnomAD3 genomes

AF:

0.00321

AC:

488

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00116

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00236

Gnomad ASJ

AF:

0.00374

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00160

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00541

Gnomad OTH

AF:

0.00239

GnomAD3 exomes

AF:

0.00292

AC:

729

AN:

250052

Hom.:

AF XY:

0.00289

AC XY:

391

AN XY:

135528

show subpopulations

Gnomad AFR exome

AF:

0.000819

Gnomad AMR exome

AF:

0.000752

Gnomad ASJ exome

AF:

0.00339

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000926

Gnomad NFE exome

AF:

0.00543

Gnomad OTH exome

AF:

0.00360

GnomAD4 exome

AF:

0.00496

AC:

7249

AN:

1461678

Hom.:

Cov.:

AF XY:

0.00477

AC XY:

3465

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.00131

Gnomad4 AMR exome

AF:

0.000783

Gnomad4 ASJ exome

AF:

0.00348

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00135

Gnomad4 NFE exome

AF:

0.00604

Gnomad4 OTH exome

AF:

0.00470

GnomAD4 genome

AF:

0.00320

AC:

488

AN:

152352

Hom.:

Cov.:

AF XY:

0.00313

AC XY:

233

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.00115

Gnomad4 AMR

AF:

0.00235

Gnomad4 ASJ

AF:

0.00374

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00160

Gnomad4 NFE

AF:

0.00541

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.00475

Hom.:

Bravo

AF:

0.00320

TwinsUK

AF:

0.00512

AC:

ALSPAC

AF:

0.00649

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00442

AC:

ExAC

AF:

0.00315

AC:

382

EpiCase

AF:

0.00469

EpiControl

AF:

0.00575

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:7

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:4

Oct 08, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 26633545) -

Sep 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

KIF1C: BS2 -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Spastic ataxia 2

Uncertain:1Benign:2

Jan 27, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 19, 2020

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Based on the classification scheme VCGS_Germline_v1.3.3, this variant is classified as likely benign. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with spastic ataxia 2 (MIM#611302). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from proline to leucine. (I) 0251 - This variant is heterozygous. (I) 0308 - Population frequency for this variant is out of keeping with known incidence of spastic ataxia 2 (MIM#611302). (SB) 0502 - Missense variant with conflicting in silico predictions and uninformative conservation. (I) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region. (I) 0705 - No comparable missense variants have previous evidence for pathogenicity. (I) 0808 - Previous reports of pathogenicity for this variant are conflicting. The most recent entries in Clinvar have classified this variant as either likely benign or a variant of uncertain significance (ClinVar). (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

Hereditary spastic paraplegia

Uncertain:1

Jan 21, 2022

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

KIF1C-related disorder

Benign:1

Oct 28, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.84

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Uncertain

0.0

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.53

Eigen

Uncertain

0.67

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.064

MetaRNN

Benign

0.028

MetaSVM

Uncertain

-0.25

MutationAssessor

Benign

1.9

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-3.7

REVEL

Uncertain

0.44

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.031

Polyphen

1.0

Vest4

0.75

MVP

0.86

MPC

1.0

ClinPred

0.028

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.16

gMVP

0.81

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