Genetic Variant BCOR:p.Thr1560Thr (chrX-40055429-C-T) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_001123385.2(BCOR):c.4680G>A(p.Thr1560Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00028 in 1,208,856 control chromosomes in the GnomAD database, including 1 homozygotes. There are 94 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0013 ( 0 hom., 42 hem., cov: 23)

Exomes 𝑓: 0.00017 ( 1 hom. 52 hem. )

Consequence

BCOR
NM_001123385.2 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -3.36

Publications

2 publications found

Variant links:

Genes affected

BCOR (HGNC:20893): (BCL6 corepressor) The protein encoded by this gene was identified as an interacting corepressor of BCL6, a POZ/zinc finger transcription repressor that is required for germinal center formation and may influence apoptosis. This protein selectively interacts with the POZ domain of BCL6, but not with eight other POZ proteins. Specific class I and II histone deacetylases (HDACs) have been shown to interact with this protein, which suggests a possible link between the two classes of HDACs. Several transcript variants encoding different isoforms have been found for this gene. A pseudogene of this gene is found on chromosome Y.[provided by RefSeq, Jun 2010]

BCOR Gene-Disease associations (from GenCC):

microphthalmia, syndromic 2
Inheritance: XL, Unknown Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Illumina, Orphanet, ClinGen, Ambry Genetics
microphthalmia, Lenz type
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

BCOR links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4

Computational evidence support a benign effect (REVEL=0.025).

BP6

Variant X-40055429-C-T is Benign according to our data. Variant chrX-40055429-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 434506.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-3.36 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00132 (148/112223) while in subpopulation AFR AF = 0.00446 (138/30934). AF 95% confidence interval is 0.00386. There are 0 homozygotes in GnomAd4. There are 42 alleles in the male GnomAd4 subpopulation. Median coverage is 23. This position passed quality control check.

BS2

High Hemizygotes in GnomAd4 at 42 XL,Unknown gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001123385.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BCOR	NM_001123385.2	MANE Select	c.4680G>A	p.Thr1560Thr	synonymous	Exon 12 of 15	NP_001116857.1	Q6W2J9-1
BCOR	NM_001437510.1		c.4680G>A	p.Thr1560Thr	synonymous	Exon 12 of 15	NP_001424439.1
BCOR	NM_001438207.1		c.4626G>A	p.Thr1542Thr	synonymous	Exon 11 of 14	NP_001425136.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BCOR	ENST00000378444.9	TSL:1 MANE Select	c.4680G>A	p.Thr1560Thr	synonymous	Exon 12 of 15	ENSP00000367705.4	Q6W2J9-1
BCOR	ENST00000397354.7	TSL:1	c.4578G>A	p.Thr1526Thr	synonymous	Exon 12 of 15	ENSP00000380512.3	Q6W2J9-2
BCOR	ENST00000378455.8	TSL:1	c.4524G>A	p.Thr1508Thr	synonymous	Exon 11 of 14	ENSP00000367716.4	Q6W2J9-4

Frequencies

GnomAD3 genomes

AF:

0.00132

AC:

148

AN:

112166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00447

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000851

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:

0.000662

GnomAD2 exomes

AF:

0.000425

AC:

AN:

183474

AF XY:

0.000383

show subpopulations

Gnomad AFR exome

AF:

0.00555

Gnomad AMR exome

AF:

0.0000365

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000366

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000173

AC:

190

AN:

1096633

Hom.:

Cov.:

AF XY:

0.000144

AC XY:

AN XY:

362023

show subpopulations

African (AFR)

AF:

0.00402

AC:

106

AN:

26378

American (AMR)

AF:

0.0000852

AC:

AN:

35206

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19373

East Asian (EAS)

AF:

0.0000331

AC:

AN:

30201

South Asian (SAS)

AF:

0.0000554

AC:

AN:

54105

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40526

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4132

European-Non Finnish (NFE)

AF:

0.0000726

AC:

AN:

840672

Other (OTH)

AF:

0.000348

AC:

AN:

46040

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.00132

AC:

148

AN:

112223

Hom.:

Cov.:

AF XY:

0.00122

AC XY:

AN XY:

34397

show subpopulations

African (AFR)

AF:

0.00446

AC:

138

AN:

30934

American (AMR)

AF:

0.000850

AC:

AN:

10585

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2656

East Asian (EAS)

AF:

0.00

AC:

AN:

3570

South Asian (SAS)

AF:

0.00

AC:

AN:

2697

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6089

Middle Eastern (MID)

AF:

0.00

AC:

AN:

219

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53258

Other (OTH)

AF:

0.000654

AC:

AN:

1529

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000912

Hom.:

Bravo

AF:

0.00136

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Microphthalmia, syndromic 1;C1846265:Oculofaciocardiodental syndrome (1)

not specified (1)

Oculofaciocardiodental syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.58

CADD

Benign

2.6

(source)

DANN

Benign

0.59

PhyloP100

-3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

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