rs79290524

chr17-5004971-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PM2 PP3_Moderate BP6

The NM_006612.6(KIF1C):c.1136C>G(p.Ala379Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000499 in 1,614,240 control chromosomes in the GnomAD database, including 1 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 0.00032 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00052 (1 hom.)
• Consequence: KIF1C NM_006612.6 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:1
• Conservation: PhyloP100: 4.95

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• BP6: Variant 17-5004971-C-G is Benign according to our data. Variant chr17-5004971-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 468849.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KIF1C	NM_006612.6	c.1136C>G	p.Ala379Gly	missense_variant	13/23	ENST00000320785.10
KIF1C	XM_005256424.3	c.1136C>G	p.Ala379Gly	missense_variant	14/24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KIF1C	ENST00000320785.10	c.1136C>G	p.Ala379Gly	missense_variant	13/23	1	NM_006612.6	P1

Frequencies

GnomAD3 genomes AF: 0.000322 AC: 49 AN: 152244 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000723

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000603

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000422 AC: 106 AN: 251392 Hom.: 1 AF XY: 0.000456 AC XY: 62 AN XY: 135876

Gnomad AFR exome AF: 0.000246

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000359

Gnomad FIN exome AF: 0.000139

Gnomad NFE exome AF: 0.000721

Gnomad OTH exome AF: 0.000326

GnomAD4 exome AF: 0.000518 AC: 757 AN: 1461878 Hom.: 1 Cov.: 32 AF XY: 0.000534 AC XY: 388 AN XY: 727240

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.000112

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000278

Gnomad4 FIN exome AF: 0.0000749

Gnomad4 NFE exome AF: 0.000621

Gnomad4 OTH exome AF: 0.000464

GnomAD4 genome AF: 0.000322 AC: 49 AN: 152362 Hom.: 0 Cov.: 32 AF XY: 0.000336 AC XY: 25 AN XY: 74510

Gnomad4 AFR AF: 0.0000721

Gnomad4 AMR AF: 0.000196

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000603

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000626 Hom.: 1

Bravo AF: 0.000306

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.00104 AC: 4

ESP6500AA AF: 0.000454 AC: 2

ESP6500EA AF: 0.000233 AC: 2

ExAC AF: 0.000544 AC: 66

EpiCase AF: 0.000436

EpiControl AF: 0.000356

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Hereditary spastic paraplegia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Nov 01, 2019

- -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Sep 01, 2022

KIF1C: PP3 -

Spastic ataxia 2 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 19, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.34	T
BayesDel_noAF	Benign	-0.35
Cadd	Pathogenic	33
Dann	Uncertain	0.99
DEOGEN2	Uncertain	0.47	T
Eigen	Benign	-0.072
Eigen_PC	Benign	0.061
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.027	D
MetaRNN	Benign	0.096	T
MetaSVM	Benign	-0.88	T
MutationAssessor	Benign	0.79	N
MutationTaster	Benign	0.91	D
PrimateAI	Uncertain	0.62	T
PROVEAN	Uncertain	-3.2	D
REVEL	Benign	0.18
Sift	Benign	0.16	T
Sift4G	Benign	0.19	T
Polyphen		0.58	P
Vest4		0.38
MVP		0.65
MPC		0.40
ClinPred		0.032	T
GERP RS		3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.12
gMVP		0.48

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.92		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.92		Position offset: -1
DS_DL_spliceai		0.23		Position offset: 29

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs79290524; hg19: chr17-4908266;