rs150245975

Positions:

• chr22-41117408-A-G

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS2

The NM_001429.4(EP300):​c.316A>G​(p.Ser106Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000741 in 1,614,210 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00051 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00076 (0 hom.)
• Consequence: EP300 NM_001429.4 missense
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5 O:1
• Conservation: PhyloP100: 3.44

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]

ACMG classification

Verdict is Benign. Variant got -16 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.044329733).
• BP6: Variant 22-41117408-A-G is Benign according to our data. Variant chr22-41117408-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 134041.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High AC in GnomAd4 at 78 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EP300	NM_001429.4	c.316A>G	p.Ser106Gly	missense_variant	2/31	ENST00000263253.9
EP300	NM_001362843.2	c.316A>G	p.Ser106Gly	missense_variant	2/30

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EP300	ENST00000263253.9	c.316A>G	p.Ser106Gly	missense_variant	2/31	1	NM_001429.4	P2
EP300	ENST00000674155.1	c.316A>G	p.Ser106Gly	missense_variant	2/30			A2
EP300	ENST00000703544.1	c.316A>G	p.Ser106Gly	missense_variant, NMD_transcript_variant	2/30
EP300	ENST00000703545.1	c.202A>G	p.Ser68Gly	missense_variant, NMD_transcript_variant	1/17

Frequencies

GnomAD3 genomes AF: 0.000512 AC: 78 AN: 152214 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.00103

Gnomad OTH AF: 0.000956

GnomAD3 exomes AF: 0.000481 AC: 121 AN: 251456 Hom.: 0 AF XY: 0.000515 AC XY: 70 AN XY: 135904

Gnomad AFR exome AF: 0.000185

Gnomad AMR exome AF: 0.0000289

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: 0.00102

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000765 AC: 1118 AN: 1461878 Hom.: 0 Cov.: 32 AF XY: 0.000743 AC XY: 540 AN XY: 727232

Gnomad4 AFR exome AF: 0.000179

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.000972

Gnomad4 OTH exome AF: 0.000480

GnomAD4 genome AF: 0.000512 AC: 78 AN: 152332 Hom.: 0 Cov.: 33 AF XY: 0.000443 AC XY: 33 AN XY: 74492

Gnomad4 AFR AF: 0.000120

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00103

Gnomad4 OTH AF: 0.000946

Alfa AF: 0.000675 Hom.: 1

Bravo AF: 0.000400

TwinsUK AF: 0.000809 AC: 3

ALSPAC AF: 0.00104 AC: 4

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.000698 AC: 6

ExAC AF: 0.000552 AC: 67

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.000600

EpiControl AF: 0.00101

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Likely benign, no assertion criteria provided	clinical testing	Department of Pathology and Laboratory Medicine, Sinai Health System	-	The EP300 p.Ser106Gly variant was not identified in the literature nor was it identified in Cosmic or LOVD 3.0. The variant was identified in dbSNP (ID: rs150245975) and ClinVar (classified as likely benign by Illumina for Rubinstein-Taybi Syndrome). The variant was identified in control databases in 136 of 282856 chromosomes at a frequency of 0.000481 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: European (non-Finnish) in 129 of 129168 chromosomes (freq: 0.000999), African in 5 of 24964 chromosomes (freq: 0.0002), Other in 1 of 7224 chromosomes (freq: 0.000138) and Latino in 1 of 35440 chromosomes (freq: 0.000028), but was not observed in the Ashkenazi Jewish, East Asian, European (Finnish) or South Asian populations. The p.Ser106 residue is conserved in mammals but not in more distantly related organisms however computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and three of four in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2024	EP300: BP4, BS1 -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 13, 2019	- -

Rubinstein-Taybi syndrome due to EP300 haploinsufficiency Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Oct 20, 2023

- -

EP300-related disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 14, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not specified Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Benign	-0.38	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	22
DANN	Benign	0.95
DEOGEN2	Benign	0.37	T
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.011
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.70	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.044	T
MetaSVM	Benign	-0.76	T
MutationAssessor	Benign	0.90	L
MutationTaster	Benign	0.89	N
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-0.49	N
REVEL	Benign	0.24
Sift	Benign	0.12	T
Sift4G	Benign	0.30	T
Polyphen		0.041	B
Vest4		0.29
MVP		0.80
ClinPred		0.022	T
GERP RS		4.9
Varity_R		0.043
gMVP		0.26

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: rs150245975; hg19: chr22-41513412;