chr22-41177432-T-TC

Position:

• chr22-41177432-T-TC

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Strong PM2

The NM_001429.4(EP300):​c.5723dupC​(p.Thr1909fs) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as not provided (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: EP300 NM_001429.4 frameshift
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 4.89

Genes affected

EP300 (HGNC:3373): (E1A binding protein p300) This gene encodes the adenovirus E1A-associated cellular p300 transcriptional co-activator protein. It functions as histone acetyltransferase that regulates transcription via chromatin remodeling and is important in the processes of cell proliferation and differentiation. It mediates cAMP-gene regulation by binding specifically to phosphorylated CREB protein. This gene has also been identified as a co-activator of HIF1A (hypoxia-inducible factor 1 alpha), and thus plays a role in the stimulation of hypoxia-induced genes such as VEGF. Defects in this gene are a cause of Rubinstein-Taybi syndrome and may also play a role in epithelial cancer. [provided by RefSeq, Jul 2008]

ENSG00000232754 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.21 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EP300	NM_001429.4	c.5723dupC	p.Thr1909fs	frameshift_variant	31/31	ENST00000263253.9	NP_001420.2
EP300	NM_001362843.2	c.5645dupC	p.Thr1883fs	frameshift_variant	30/30		NP_001349772.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EP300	ENST00000263253.9	c.5723dupC	p.Thr1909fs	frameshift_variant	31/31	1	NM_001429.4	ENSP00000263253.7
EP300	ENST00000674155.1	c.5645dupC	p.Thr1883fs	frameshift_variant	30/30			ENSP00000501078.1
ENSG00000232754	ENST00000415054.1	n.82+5630dupG		intron_variant		3
EP300-AS1	ENST00000420537.1	n.224-2609dupG		intron_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

Rubinstein-Taybi syndrome due to EP300 haploinsufficiency Other:1

not provided, no classification provided

literature only

Costain lab, The Hospital for Sick Children

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Computational scores

Source: dbNSFP v4.3

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

LitVar

Other links and lift over

dbSNP: rs1555912182; hg19: chr22-41573436;