1-10365418-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PM5 PP2

The NM_001365951.3(KIF1B):c.4522A>T(p.Thr1508Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1508A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: KIF1B NM_001365951.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.32

Genes affected

KIF1B (HGNC:16636): (kinesin family member 1B) Predicted to enable microtubule binding activity and plus-end-directed microtubule motor activity. Predicted to be involved in chemical synaptic transmission; dense core granule cytoskeletal transport; and vesicle-mediated transport. Predicted to act upstream of or within mitochondrion transport along microtubule. Predicted to be located in cytoplasmic vesicle membrane and neuron projection. Predicted to be part of kinesin complex. Predicted to be active in several cellular components, including axon; dendrite; and microtubule. Implicated in Charcot-Marie-Tooth disease type 2A1; carcinoma (multiple); multiple sclerosis; neuroblastoma; and pheochromocytoma. Biomarker of hepatocellular carcinoma. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-10365418-A-C is described in Lovd as [Likely_pathogenic].
• PP2: Missense variant where missense usually causes diseases, KIF1B

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KIF1B	NM_001365951.3	c.4522A>T	p.Thr1508Ser	missense_variant	43/49	ENST00000676179.1
KIF1B	NM_001365952.1	c.4522A>T	p.Thr1508Ser	missense_variant	43/49
KIF1B	NM_015074.3	c.4384A>T	p.Thr1462Ser	missense_variant	41/47

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KIF1B	ENST00000676179.1	c.4522A>T	p.Thr1508Ser	missense_variant	43/49		NM_001365951.3	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
Cadd	Uncertain	25
Dann	Uncertain	1.0
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.96	D;D;D;D;D
M_CAP	Benign	0.042	D
MetaRNN	Uncertain	0.68	D;D;D;D;D
MetaSVM	Uncertain	0.059	D
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-2.6	D;D;D;.;.
REVEL	Uncertain	0.50
Sift	Uncertain	0.0040	D;D;D;.;.
Sift4G	Benign	0.065	T;D;D;D;D
Polyphen		0.97	D;D;.;D;.
Vest4		0.81
MutPred		0.26		.;Loss of helix (P = 0.0304);Loss of helix (P = 0.0304);.;.;
MVP		0.77
MPC		1.2
ClinPred		0.93	D
GERP RS		5.5
Varity_R		0.39
gMVP		0.55

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

LitVar

Other links and lift over

dbSNP: rs78662124; hg19: chr1-10425476;