rs2307362

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_ModerateBP7BA1

The NM_006190.5(ORC2):​c.1173C>T​(p.Leu391=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.165 in 1,592,800 control chromosomes in the GnomAD database, including 24,732 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 0.22 ( 4389 hom., cov: 32)
Exomes 𝑓: 0.16 ( 20343 hom. )

Consequence

ORC2
NM_006190.5 synonymous

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.115
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.41).
BP7
Synonymous conserved (PhyloP=0.115 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.367 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ORC2NM_006190.5 linkuse as main transcriptc.1173C>T p.Leu391= synonymous_variant 14/18 ENST00000234296.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ORC2ENST00000234296.7 linkuse as main transcriptc.1173C>T p.Leu391= synonymous_variant 14/181 NM_006190.5 P1
ORC2ENST00000464147.1 linkuse as main transcriptn.260C>T non_coding_transcript_exon_variant 3/65
ORC2ENST00000487853.1 linkuse as main transcriptn.625C>T non_coding_transcript_exon_variant 1/23

Frequencies

GnomAD3 genomes
AF:
0.216
AC:
32783
AN:
151916
Hom.:
4381
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.371
Gnomad AMI
AF:
0.149
Gnomad AMR
AF:
0.163
Gnomad ASJ
AF:
0.216
Gnomad EAS
AF:
0.00847
Gnomad SAS
AF:
0.0690
Gnomad FIN
AF:
0.164
Gnomad MID
AF:
0.127
Gnomad NFE
AF:
0.169
Gnomad OTH
AF:
0.209
GnomAD3 exomes
AF:
0.154
AC:
37679
AN:
244142
Hom.:
3764
AF XY:
0.150
AC XY:
19839
AN XY:
132050
show subpopulations
Gnomad AFR exome
AF:
0.387
Gnomad AMR exome
AF:
0.109
Gnomad ASJ exome
AF:
0.207
Gnomad EAS exome
AF:
0.00570
Gnomad SAS exome
AF:
0.0784
Gnomad FIN exome
AF:
0.168
Gnomad NFE exome
AF:
0.169
Gnomad OTH exome
AF:
0.171
GnomAD4 exome
AF:
0.160
AC:
230199
AN:
1440766
Hom.:
20343
Cov.:
28
AF XY:
0.158
AC XY:
113000
AN XY:
717300
show subpopulations
Gnomad4 AFR exome
AF:
0.376
Gnomad4 AMR exome
AF:
0.117
Gnomad4 ASJ exome
AF:
0.208
Gnomad4 EAS exome
AF:
0.00342
Gnomad4 SAS exome
AF:
0.0770
Gnomad4 FIN exome
AF:
0.170
Gnomad4 NFE exome
AF:
0.165
Gnomad4 OTH exome
AF:
0.164
GnomAD4 genome
AF:
0.216
AC:
32832
AN:
152034
Hom.:
4389
Cov.:
32
AF XY:
0.211
AC XY:
15713
AN XY:
74324
show subpopulations
Gnomad4 AFR
AF:
0.372
Gnomad4 AMR
AF:
0.163
Gnomad4 ASJ
AF:
0.216
Gnomad4 EAS
AF:
0.00849
Gnomad4 SAS
AF:
0.0691
Gnomad4 FIN
AF:
0.164
Gnomad4 NFE
AF:
0.169
Gnomad4 OTH
AF:
0.207
Alfa
AF:
0.159
Hom.:
1010
Bravo
AF:
0.226
Asia WGS
AF:
0.0700
AC:
243
AN:
3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.41
CADD
Benign
6.6
DANN
Benign
0.68

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs2307362; hg19: chr2-201785837; COSMIC: COSV52238699; API