rs28989186

Positions:

chr15-40176672-C-T

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_001211.6(BUB1B):c.580C>T(p.Arg194*) variant causes a stop gained, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,613,620 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

BUB1B
NM_001211.6 stop_gained, splice_region

Scores

Splicing: ADA: 0.009021

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4O:1

Conservation

PhyloP100: 1.89

Variant links:

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 links:

LOC107984763 (HGNC:):

LOC107984763 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 15-40176672-C-T is Pathogenic according to our data. Variant chr15-40176672-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 6760.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BUB1B	NM_001211.6 linkuse as main transcript	c.580C>T	p.Arg194*	stop_gained, splice_region_variant	5/23	ENST00000287598.11	NP_001202.5	O60566-1
LOC107984763	XR_001751506.2 linkuse as main transcript	n.392-2188G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BUB1B	ENST00000287598.11 linkuse as main transcript	c.580C>T	p.Arg194*	stop_gained, splice_region_variant	5/23	1	NM_001211.6	ENSP00000287598.7		O60566-1
BUB1B	ENST00000412359.7 linkuse as main transcript	c.622C>T	p.Arg208*	stop_gained, splice_region_variant	5/23	2		ENSP00000398470.3		O60566-3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152070

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000798

AC:

AN:

250592

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135722

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461550

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727082

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152070

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74272

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000195

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Mosaic variegated aneuploidy syndrome 1

Pathogenic:4

Pathogenic, criteria provided, single submitter	clinical testing	Courtagen Diagnostics Laboratory, Courtagen Life Sciences	Mar 03, 2015	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Nov 01, 2004	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Sep 12, 2023	This sequence change creates a premature translational stop signal (p.Arg194*) in the BUB1B gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in BUB1B are known to be pathogenic (PMID: 15475955, 21190457). 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. For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 6760). This premature translational stop signal has been observed in individual(s) with mosaic variegated aneuploidy (PMID: 15475955). -
Likely pathogenic, criteria provided, single submitter	clinical testing	St. Jude Molecular Pathology, St. Jude Children's Research Hospital	Jan 17, 2023	The BUB1B c.580C>T (p.Arg194Ter) change is a nonsense variant that is predicted to cause premature protein truncation and loss of normal protein function. This variant has a maximum frequency of 0.0023% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). This variant has been reported in a 14-year-old male with mosaic variegated aneuploidy syndrome who was compound heterozygous for this variant and p.Leu844Phe. Trio-testing confirmed p.Arg194Ter in the father and p.Leu844Phe in the mother, both parents presented with premature chromatid separation traits. The index patient had intrauterine growth retardation, microcephaly, cryptorchidism, and embryonal rhabdomyosarcoma of the soft palate (PMID: 15475955). In summary, this variant meets criteria to be classified as likely pathogenic. -

Premature chromatid separation trait

Other:1

Affects, no assertion criteria provided

literature only

OMIM

Nov 01, 2004

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.59

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Uncertain

0.94

Vest4

0.86

GERP RS

2.5

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0090

dbscSNV1_RF

Benign

0.36

SpliceAI score (max)

0.13

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