dbSNP rs1886996: KIF20B:p.Cys1177Ser (chr10-89738370-T-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001284259.2(KIF20B):c.3529T>A(p.Cys1177Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,558 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict 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: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

KIF20B
NM_001284259.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.542

Publications

32 publications found

Variant links:

Genes affected

KIF20B (HGNC:7212): (kinesin family member 20B) Enables several functions, including WW domain binding activity; plus-end-directed microtubule motor activity; and protein homodimerization activity. Involved in positive regulation of cell population proliferation and positive regulation of cytokinesis. Located in several cellular components, including microtubule cytoskeleton; midbody; and nuclear lumen. [provided by Alliance of Genome Resources, Apr 2022]

KIF20B links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.037365288).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001284259.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KIF20B	NM_001284259.2	MANE Select	c.3529T>A	p.Cys1177Ser	missense	Exon 20 of 33	NP_001271188.1
KIF20B	NM_016195.4		c.3409T>A	p.Cys1137Ser	missense	Exon 20 of 33	NP_057279.2
KIF20B	NM_001382506.1		c.3316T>A	p.Cys1106Ser	missense	Exon 19 of 32	NP_001369435.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KIF20B	ENST00000371728.8	TSL:1 MANE Select	c.3529T>A	p.Cys1177Ser	missense	Exon 20 of 33	ENSP00000360793.3
KIF20B	ENST00000260753.8	TSL:1	c.3409T>A	p.Cys1137Ser	missense	Exon 20 of 33	ENSP00000260753.4
KIF20B	ENST00000478929.1	TSL:1	n.2075T>A		non_coding_transcript_exon	Exon 7 of 20

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000406

AC:

AN:

246112

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000297

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1456558

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

724342

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33082

American (AMR)

AF:

0.0000229

AC:

AN:

43714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25904

East Asian (EAS)

AF:

0.00

AC:

AN:

39580

South Asian (SAS)

AF:

0.00

AC:

AN:

84506

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53338

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110528

Other (OTH)

AF:

0.00

AC:

AN:

60166

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

79238

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.57

CADD

Benign

2.6

(source)

DANN

Benign

0.22

DEOGEN2

Benign

0.011

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.26

M_CAP

Benign

0.036

MetaRNN

Benign

0.037

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.2

PhyloP100

0.54

PrimateAI

Benign

0.20

PROVEAN

Benign

-0.82

REVEL

Benign

0.063

Sift

Benign

0.42

Sift4G

Benign

0.57

Polyphen

0.0010

Vest4

0.21

MutPred

0.35

Gain of disorder (P = 0.0374)

MVP

0.28

MPC

0.027

ClinPred

0.044

GERP RS

0.46

Varity_R

0.058

gMVP

0.12

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over