dbSNP rs1468215: KIF3A:c.1885-97T>G (chr5-132700797-A-C) – 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_001300791.2(KIF3A):c.1885-97T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000263 in 152,018 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000035 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

KIF3A
NM_001300791.2 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.113

Publications

6 publications found

Variant links:

Genes affected

KIF3A (HGNC:6319): (kinesin family member 3A) Enables protein phosphatase binding activity; small GTPase binding activity; and spectrin binding activity. Involved in protein localization to cell junction and protein transport. Located in centriole and centrosome. Part of kinesin II complex. Colocalizes with spindle microtubule. [provided by Alliance of Genome Resources, Apr 2022]

KIF3A links:

ENSG00000230612 (HGNC:):

ENSG00000230612 links:

Genome browser will be placed here

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 (BayesDel_noAF=-0.82).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001300791.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
KIF3A	NM_001300791.2	MANE Select	c.1885-97T>G	intron	N/A	NP_001287720.1	E9PES4
KIF3A	NM_001300792.2		c.1813-97T>G	intron	N/A	NP_001287721.1	J3KPF9
KIF3A	NM_007054.7		c.1804-97T>G	intron	N/A	NP_008985.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
KIF3A	ENST00000403231.6	TSL:2 MANE Select	c.1885-97T>G	intron	N/A	ENSP00000385808.1	E9PES4
KIF3A	ENST00000378735.5	TSL:1	c.1813-97T>G	intron	N/A	ENSP00000368009.1	J3KPF9
KIF3A	ENST00000618515.4	TSL:5	c.1882-97T>G	intron	N/A	ENSP00000483023.1	A0A087X011

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152018

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000967

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000347

AC:

AN:

575990

Hom.:

AF XY:

0.00000324

AC XY:

AN XY:

308526

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000691

AC:

AN:

14466

American (AMR)

AF:

0.00

AC:

AN:

25692

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

17622

East Asian (EAS)

AF:

0.00

AC:

AN:

31696

South Asian (SAS)

AF:

0.00

AC:

AN:

53600

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46172

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2332

European-Non Finnish (NFE)

AF:

0.00000282

AC:

AN:

354178

Other (OTH)

AF:

0.00

AC:

AN:

30232

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00666416), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

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

AF:

0.0000263

AC:

AN:

152018

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74228

show subpopulations

African (AFR)

AF:

0.0000967

AC:

AN:

41362

American (AMR)

AF:

0.00

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10550

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00

Hom.:

1584

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

7.0

(source)

DANN

Benign

0.84

PhyloP100

0.11

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over