2-240722483-G-T

Variant names:

• chr2-240722483-G-T
• NM_001244008.2:c.4638C>A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_001244008.2(KIF1A):​c.4638C>A​(p.Asn1546Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000717 in 1,395,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. N1546N) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: KIF1A NM_001244008.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.959

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 1 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=0.1523253).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF1A	NM_001244008.2	c.4638C>A	p.Asn1546Lys	missense_variant	Exon 43 of 49	ENST00000498729.9	NP_001230937.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF1A	ENST00000498729.9	c.4638C>A	p.Asn1546Lys	missense_variant	Exon 43 of 49	5	NM_001244008.2	ENSP00000438388.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.17e-7 AC: 1 AN: 1395060 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 688084

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 9.27e-7

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	Uncertain	0.46
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	0.94
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.50	D;.;.;.;.;.;.;D;.;.;.;.;.;.
Eigen	Benign	-0.81
Eigen_PC	Benign	-0.85
FATHMM_MKL	Benign	0.28	N
LIST_S2	Uncertain	0.91	.;D;D;D;D;D;.;D;D;D;D;D;D;D
M_CAP	Benign	0.082	D
MetaRNN	Benign	0.15	T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	1.3	L;.;.;.;.;.;.;L;.;.;.;.;.;.
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-2.5	.;D;.;.;.;.;.;.;.;.;.;.;.;.
REVEL	Benign	0.070
Sift	Benign	0.15	.;T;.;.;.;.;.;.;.;.;.;.;.;.
Sift4G	Benign	0.54	.;T;.;.;.;.;.;.;.;.;.;.;.;.
Polyphen		0.090	B;.;.;.;.;.;.;B;.;.;.;.;.;.
Vest4		0.16
MutPred		0.31		Gain of ubiquitination at N1445 (P = 4e-04);.;.;.;.;.;.;Gain of ubiquitination at N1445 (P = 4e-04);.;.;.;.;.;.;
MVP		0.57
MPC		0.57
ClinPred		0.42	T
GERP RS		-0.12
Varity_R		0.12
gMVP		0.28

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-241661900;