2-240719886-C-G

Variant names:

• chr2-240719886-C-G
• NM_001244008.2:c.4909G>C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_001244008.2(KIF1A):​c.4909G>C​(p.Glu1637Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,374 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: KIF1A NM_001244008.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.26

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the KIF1A gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 112 curated pathogenic missense variants (we use a threshold of 10). The gene has 150 curated benign missense variants. Gene score misZ: 5.1579 (above the threshold of 3.09). Trascript score misZ: 5.0191 (above the threshold of 3.09). GenCC associations: The gene is linked to 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.28778717).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF1A	NM_001244008.2	c.4909G>C	p.Glu1637Gln	missense_variant	Exon 46 of 49	ENST00000498729.9	NP_001230937.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF1A	ENST00000498729.9	c.4909G>C	p.Glu1637Gln	missense_variant	Exon 46 of 49	5	NM_001244008.2	ENSP00000438388.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459374 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 725954

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.16	T;.;.;.;.;.;.;T;.;.;.;.;.;.
Eigen	Benign	-0.016
Eigen_PC	Benign	-0.066
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.79	.;T;T;T;T;T;.;T;T;T;T;T;T;T
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.29	T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.4	M;.;.;.;.;.;.;M;.;.;.;.;.;.
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-1.4	.;N;.;.;.;.;.;.;.;.;.;.;.;.
REVEL	Benign	0.11
Sift	Benign	0.072	.;T;.;.;.;.;.;.;.;.;.;.;.;.
Sift4G	Benign	0.46	.;T;.;.;.;.;.;.;.;.;.;.;.;.
Polyphen		0.62	P;.;.;.;.;.;.;P;.;.;.;.;.;.
Vest4		0.41
MutPred		0.20		Loss of solvent accessibility (P = 0.0172);.;.;.;.;.;.;Loss of solvent accessibility (P = 0.0172);.;.;.;.;.;.;
MVP		0.55
MPC		1.1
ClinPred		0.84	D
GERP RS		4.2
Varity_R		0.085
gMVP		0.42

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-241659303;