2-200951698-T-A

Variant names:

• chr2-200951698-T-A
• rs13392371
• NM_006190.5:c.239-2055A>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_006190.5(ORC2):​c.239-2055A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.168 in 152,210 control chromosomes in the GnomAD database, including 2,368 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.17 (2368 hom., cov: 32)
• Consequence: ORC2 NM_006190.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.302
• Publications: 11 publications found

Genes affected

ORC2 (HGNC:8488): (origin recognition complex subunit 2) The origin recognition complex (ORC) is a highly conserved six subunits protein complex essential for the initiation of the DNA replication in eukaryotic cells. Studies in yeast demonstrated that ORC binds specifically to origins of replication and serves as a platform for the assembly of additional initiation factors such as Cdc6 and Mcm proteins. The protein encoded by this gene is a subunit of the ORC complex. This protein forms a core complex with ORC3, -4, and -5. It also interacts with CDC45 and MCM10, which are proteins known to be important for the initiation of DNA replication. This protein has been demonstrated to specifically associate with the origin of replication of Epstein-Barr virus in human cells, and is thought to be required for DNA replication from viral origin of replication. Alternatively spliced transcript variants have been found, one of which is a nonsense-mediated mRNA decay candidate. [provided by RefSeq, Oct 2010]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.204 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006190.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ORC2	NM_006190.5	MANE Select	c.239-2055A>T		intron	N/A	NP_006181.1
	ORC2	NR_033915.2		n.469-2055A>T		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ORC2	ENST00000234296.7	TSL:1 MANE Select	c.239-2055A>T		intron	N/A	ENSP00000234296.2
	ORC2	ENST00000410039.5	TSL:5	c.239-2055A>T		intron	N/A	ENSP00000386390.1
	ORC2	ENST00000467605.5	TSL:3	n.385-2055A>T		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.168 AC: 25608 AN: 152092 Hom.: 2363 Cov.: 32

Gnomad AFR AF: 0.208

Gnomad AMI AF: 0.149

Gnomad AMR AF: 0.143

Gnomad ASJ AF: 0.215

Gnomad EAS AF: 0.00847

Gnomad SAS AF: 0.0687

Gnomad FIN AF: 0.164

Gnomad MID AF: 0.127

Gnomad NFE AF: 0.168

Gnomad OTH AF: 0.174

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.168 AC: 25633 AN: 152210 Hom.: 2368 Cov.: 32 AF XY: 0.165 AC XY: 12295 AN XY: 74424

African (AFR) AF: 0.208 AC: 8622 AN: 41516

American (AMR) AF: 0.143 AC: 2183 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.215 AC: 747 AN: 3472

East Asian (EAS) AF: 0.00849 AC: 44 AN: 5180

South Asian (SAS) AF: 0.0687 AC: 332 AN: 4832

European-Finnish (FIN) AF: 0.164 AC: 1742 AN: 10596

Middle Eastern (MID) AF: 0.122 AC: 36 AN: 294

European-Non Finnish (NFE) AF: 0.168 AC: 11427 AN: 68004

Other (OTH) AF: 0.173 AC: 364 AN: 2108

Alfa AF: 0.174 Hom.: 312

Bravo AF: 0.171

Asia WGS AF: 0.0560 AC: 195 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	2.3
DANN	Benign	0.097
PhyloP100		0.30
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs13392371; hg19: chr2-201816421;