Genetic Variant KIF2B:p.Ser104Leu (chr17-53823344-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_032559.5(KIF2B):c.311C>T(p.Ser104Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000075 in 1,614,114 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000079 ( 0 hom. )

Consequence

KIF2B
NM_032559.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.34

Variant links:

Genes affected

KIF2B (HGNC:29443): (kinesin family member 2B) Predicted to enable microtubule binding activity and microtubule motor activity. Involved in metaphase plate congression; microtubule depolymerization; and regulation of chromosome segregation. Located in intercellular bridge; mitotic spindle; and nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

KIF2B links:

ENSG00000285939 (HGNC:):

ENSG00000285939 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.09441161).

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIF2B	NM_032559.5 link	c.311C>T	p.Ser104Leu	missense_variant	Exon 1 of 1	ENST00000268919.6	NP_115948.4	Q8N4N8A0A140VKG5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KIF2B	ENST00000268919.6 link	c.311C>T	p.Ser104Leu	missense_variant	Exon 1 of 1	6	NM_032559.5	ENSP00000268919.4		Q8N4N8
ENSG00000285939	ENST00000650577.1 link	n.659+16488G>A		intron_variant	Intron 4 of 6

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000194

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000438

AC:

AN:

251258

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135800

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000787

AC:

115

AN:

1461872

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000953

Gnomad4 OTH exome

AF:

0.0000993

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74420

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000195

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000450

Hom.:

Bravo

AF:

0.0000302

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 28, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.311C>T (p.S104L) alteration is located in exon 1 (coding exon 1) of the KIF2B gene. This alteration results from a C to T substitution at nucleotide position 311, causing the serine (S) at amino acid position 104 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.010

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.64

FATHMM_MKL

Benign

0.31

LIST_S2

Benign

0.62

M_CAP

Benign

0.018

MetaRNN

Benign

0.094

MetaSVM

Benign

-0.89

MutationAssessor

Uncertain

2.8

PrimateAI

Benign

0.29

PROVEAN

Benign

-2.0

REVEL

Benign

0.11

Sift

Benign

0.19

Sift4G

Benign

0.29

Polyphen

0.61

Vest4

0.16

MVP

0.74

MPC

0.11

ClinPred

0.045

GERP RS

2.9

Varity_R

0.059

gMVP

0.33

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over