rs1289349820

chrX-40055416-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3

The NM_001123385.2(BCOR):c.4693A>G(p.Thr1565Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000365 in 1,097,074 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1565I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.0000036 (0 hom. 2 hem.)
• Consequence: BCOR NM_001123385.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.91

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.791

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BCOR	NM_001123385.2	c.4693A>G	p.Thr1565Ala	missense_variant	12/15	ENST00000378444.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BCOR	ENST00000378444.9	c.4693A>G	p.Thr1565Ala	missense_variant	12/15	1	NM_001123385.2	P2

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD3 exomes AF: 0.00000545 AC: 1 AN: 183481 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 67927

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: 0.0000122

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000365 AC: 4 AN: 1097074 Hom.: 0 Cov.: 30 AF XY: 0.00000552 AC XY: 2 AN XY: 362440

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000476

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

Bravo AF: 0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Corpus callosum, agenesis of;C0221356:Brachycephaly;C4023628:Mild fetal ventriculomegaly;C4551563:Microcephaly;C5231391:Congenital cerebellar hypoplasia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 01, 2017

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.48
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
Cadd	Uncertain	26
Dann	Uncertain	1.0
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.84	T;T;.;T;T;T;T
M_CAP	Pathogenic	0.54	D
MetaRNN	Pathogenic	0.79	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.27	D
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-3.7	D;D;D;D;D;D;D
REVEL	Pathogenic	0.75
Sift	Uncertain	0.019	D;D;T;T;T;T;D
Sift4G	Benign	0.54	T;T;T;T;T;T;T
Polyphen		0.49, 1.0	.;.;P;P;D;P;.
Vest4		0.59, 0.88, 0.82, 0.87, 0.88
MutPred		0.67		.;.;.;.;Loss of phosphorylation at T1565 (P = 0.0427);.;.;
MVP		0.99
MPC		0.92
ClinPred		0.51	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.35
gMVP		0.86

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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

Other links and lift over

dbSNP: rs1289349820; hg19: chrX-39914669;