NM_001365951.3:c.2159C>T

Variant names:

• chr1-10320086-C-T
• rs41274468
• NM_001365951.3:c.2159C>T

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_Moderate BP6 BS2

The NM_001365951.3(KIF1B):​c.2159C>T​(p.Thr720Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0004 in 1,613,826 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T720S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.00023 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00042 (0 hom.)
• Consequence: KIF1B NM_001365951.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5 B:2
• Conservation: PhyloP100: 7.56
• Publications: 5 publications found

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]

KIF1B Gene-Disease associations (from GenCC):

• pheochromocytoma

  Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Charcot-Marie-Tooth disease type 2A1

  Inheritance: AD Classification: SUPPORTIVE, LIMITED, NO_KNOWN Submitted by: ClinGen, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• hereditary pheochromocytoma-paraganglioma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• neuroblastoma, susceptibility to, 1

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.2214987).
• BP6: Variant 1-10320086-C-T is Benign according to our data. Variant chr1-10320086-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 408312.
• BS2: High AC in GnomAd4 at 35 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001365951.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KIF1B	NM_001365951.3	MANE Select	c.2159C>T	p.Thr720Ile	missense	Exon 23 of 49	NP_001352880.1	O60333-1
	KIF1B	NM_001365952.1		c.2159C>T	p.Thr720Ile	missense	Exon 23 of 49	NP_001352881.1	O60333-1
	KIF1B	NM_015074.3		c.2021C>T	p.Thr674Ile	missense	Exon 21 of 47	NP_055889.2	O60333-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KIF1B	ENST00000676179.1	MANE Select	c.2159C>T	p.Thr720Ile	missense	Exon 23 of 49	ENSP00000502065.1	O60333-1
	KIF1B	ENST00000377081.5	TSL:1	c.2159C>T	p.Thr720Ile	missense	Exon 22 of 48	ENSP00000366284.1	O60333-4
	KIF1B	ENST00000377086.5	TSL:1	c.2159C>T	p.Thr720Ile	missense	Exon 23 of 49	ENSP00000366290.1	O60333-1

Frequencies

GnomAD3 genomes AF: 0.000230 AC: 35 AN: 152144 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000412

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000139 AC: 35 AN: 251204 AF XY: 0.000155

Gnomad AFR exome AF: 0.000185

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000247

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000417 AC: 610 AN: 1461564 Hom.: 0 Cov.: 30 AF XY: 0.000364 AC XY: 265 AN XY: 727076

African (AFR) AF: 0.0000299 AC: 1 AN: 33474

American (AMR) AF: 0.0000894 AC: 4 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39678

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53342

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.000526 AC: 585 AN: 1111808

Other (OTH) AF: 0.000315 AC: 19 AN: 60390

GnomAD4 genome AF: 0.000230 AC: 35 AN: 152262 Hom.: 0 Cov.: 32 AF XY: 0.000175 AC XY: 13 AN XY: 74434

African (AFR) AF: 0.000120 AC: 5 AN: 41548

American (AMR) AF: 0.000131 AC: 2 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10594

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000412 AC: 28 AN: 68014

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.000293 Hom.: 0

Bravo AF: 0.000215

TwinsUK AF: 0.000809 AC: 3

ALSPAC AF: 0.000778 AC: 3

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000465 AC: 4

ExAC AF: 0.0000906 AC: 11

EpiCase AF: 0.000327

EpiControl AF: 0.000356

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	2	-	not provided (2)
-	1	-	Charcot-Marie-Tooth disease (1)
-	1	-	Charcot-Marie-Tooth disease type 2 (1)
-	1	-	Charcot-Marie-Tooth disease type 2A1 (1)
-	-	1	Hereditary cancer (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.66
BayesDel_addAF	Benign	-0.062	T
BayesDel_noAF	Uncertain	-0.010
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.62	D
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.50
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.42	T
MutationAssessor	Benign	1.3	L
PhyloP100		7.6
PrimateAI	Pathogenic	0.83	D
PROVEAN	Uncertain	-2.7	D
REVEL	Uncertain	0.39
Sift	Benign	0.045	D
Sift4G	Benign	0.13	T
Polyphen		0.99	D
Vest4		0.37
MVP		0.46
MPC		1.3
ClinPred		0.16	T
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.29
gMVP		0.56
Mutation Taster		=58/42	polymorphism

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

Other links and lift over

dbSNP: rs41274468; hg19: chr1-10380144;