chr20-33685994-G-A

Position:

• chr20-33685994-G-A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_Strong BP6_Moderate BS2

The NM_005225.3(E2F1):​c.261+10C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00282 in 1,130,020 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0016 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0030 (2 hom.)
• Consequence: E2F1 NM_005225.3 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.731

Genes affected

E2F1 (HGNC:3113): (E2F transcription factor 1) The protein encoded by this gene is a member of the E2F family of transcription factors. The E2F family plays a crucial role in the control of cell cycle and action of tumor suppressor proteins and is also a target of the transforming proteins of small DNA tumor viruses. The E2F proteins contain several evolutionally conserved domains found in most members of the family. These domains include a DNA binding domain, a dimerization domain which determines interaction with the differentiation regulated transcription factor proteins (DP), a transactivation domain enriched in acidic amino acids, and a tumor suppressor protein association domain which is embedded within the transactivation domain. This protein and another 2 members, E2F2 and E2F3, have an additional cyclin binding domain. This protein binds preferentially to retinoblastoma protein pRB in a cell-cycle dependent manner. It can mediate both cell proliferation and p53-dependent/independent apoptosis. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.6).
• BP6: Variant 20-33685994-G-A is Benign according to our data. Variant chr20-33685994-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 785836.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAd4 at 237 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
E2F1	NM_005225.3	c.261+10C>T		intron_variant		ENST00000343380.6
E2F1	XM_047439961.1	c.261+10C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
E2F1	ENST00000343380.6	c.261+10C>T		intron_variant		1	NM_005225.3	P1

Frequencies

GnomAD3 genomes AF: 0.00157 AC: 237 AN: 151166 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000485

Gnomad AMI AF: 0.00220

Gnomad AMR AF: 0.000198

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000293

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00309

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00301 AC: 2950 AN: 978744 Hom.: 2 Cov.: 30 AF XY: 0.00292 AC XY: 1344 AN XY: 460086

Gnomad4 AFR exome AF: 0.000258

Gnomad4 AMR exome AF: 0.000195

Gnomad4 ASJ exome AF: 0.000200

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.000470

Gnomad4 NFE exome AF: 0.00335

Gnomad4 OTH exome AF: 0.00173

GnomAD4 genome AF: 0.00157 AC: 237 AN: 151276 Hom.: 0 Cov.: 32 AF XY: 0.00154 AC XY: 114 AN XY: 73922

Gnomad4 AFR AF: 0.000483

Gnomad4 AMR AF: 0.000198

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000293

Gnomad4 NFE AF: 0.00309

Gnomad4 OTH AF: 0.00

Alfa AF: 0.00175 Hom.: 0

Bravo AF: 0.00142

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 31, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.60
CADD	Benign	14
DANN	Uncertain	0.98
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs534919188; hg19: chr20-32273800;