chr15-40202470-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001211.6(BUB1B):c.1628+5G>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,610,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

BUB1B
NM_001211.6 splice_region, intron

Scores

Splicing: ADA: 0.7441

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.24

Publications

0 publications found

Variant links:

COSMIC-nc: COSV105849806

Genes affected

BUB1B (HGNC:1149): (BUB1 mitotic checkpoint serine/threonine kinase B) This gene encodes a kinase involved in spindle checkpoint function. The protein has been localized to the kinetochore and plays a role in the inhibition of the anaphase-promoting complex/cyclosome (APC/C), delaying the onset of anaphase and ensuring proper chromosome segregation. Impaired spindle checkpoint function has been found in many forms of cancer. [provided by RefSeq, Jul 2008]

BUB1B Gene-Disease associations (from GenCC):

mosaic variegated aneuploidy syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen, G2P
rhabdomyosarcoma
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
mosaic variegated aneuploidy syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

BUB1B links:

LOC107984763 (HGNC:):

LOC107984763 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.43).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BUB1B	NM_001211.6 link	c.1628+5G>A		splice_region_variant, intron_variant	Intron 13 of 22	ENST00000287598.11	NP_001202.5	O60566-1
LOC107984763	XR_001751506.2 link	n.218-22269C>T		intron_variant	Intron 1 of 2

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
BUB1B	ENST00000287598.11 link	c.1628+5G>A	splice_region_variant, intron_variant	Intron 13 of 22	1	NM_001211.6	ENSP00000287598.7	O60566-1
BUB1B	ENST00000412359.7 link	c.1670+5G>A	splice_region_variant, intron_variant	Intron 13 of 22	2		ENSP00000398470.3	O60566-3
BUB1B	ENST00000558972.1 link	n.433+5G>A	splice_region_variant, intron_variant	Intron 3 of 4	3
BUB1B	ENST00000559733.5 link	n.*541+5G>A	splice_region_variant, intron_variant	Intron 6 of 6	3		ENSP00000453643.1	H0YMK5

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151670

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1459022

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

725892

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33256

American (AMR)

AF:

0.0000225

AC:

AN:

44502

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39650

South Asian (SAS)

AF:

0.0000233

AC:

AN:

85788

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53390

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5728

European-Non Finnish (NFE)

AF:

0.0000180

AC:

AN:

1110322

Other (OTH)

AF:

0.00

AC:

AN:

60284

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.421

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:

0.0000132

AC:

AN:

151784

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74194

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41350

American (AMR)

AF:

0.00

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.000208

AC:

AN:

4806

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10472

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67950

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mosaic variegated aneuploidy syndrome 1

Uncertain:1

Jan 28, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change falls in intron 13 of the BUB1B gene. It does not directly change the encoded amino acid sequence of the BUB1B protein. It affects a nucleotide within the consensus splice site. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with BUB1B-related conditions. ClinVar contains an entry for this variant (Variation ID: 575626). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.48

PhyloP100

-1.2

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.74

dbscSNV1_RF

Benign

0.42

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over