rs114426997

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_004153.4(ORC1):c.1186C>T(p.Arg396Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000732 in 1,611,550 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R396Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0036 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00043 ( 6 hom. )

Consequence

ORC1
NM_004153.4 missense, splice_region

Scores

Splicing: ADA: 0.0007445

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.102

Publications

5 publications found

Variant links:

Genes affected

ORC1 (HGNC:8487): (origin recognition complex subunit 1) 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 the largest subunit of the ORC complex. While other ORC subunits are stable throughout the cell cycle, the levels of this protein vary during the cell cycle, which has been shown to be controlled by ubiquitin-mediated proteolysis after initiation of DNA replication. This protein is found to be selectively phosphorylated during mitosis. It is also reported to interact with MYST histone acetyltransferase 2 (MyST2/HBO1), a protein involved in control of transcription silencing. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

ORC1 Gene-Disease associations (from GenCC):

Meier-Gorlin syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
Meier-Gorlin syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ORC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0049026906).

BP6

Variant 1-52389218-G-A is Benign according to our data. Variant chr1-52389218-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 211797.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00361 (550/152304) while in subpopulation AFR AF = 0.0123 (512/41568). AF 95% confidence interval is 0.0114. There are 2 homozygotes in GnomAd4. There are 260 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ORC1	NM_004153.4 link	c.1186C>T	p.Arg396Trp	missense_variant, splice_region_variant	Exon 7 of 17	ENST00000371568.8	NP_004144.2	Q13415

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ORC1	ENST00000371568.8 link	c.1186C>T	p.Arg396Trp	missense_variant, splice_region_variant	Exon 7 of 17	1	NM_004153.4	ENSP00000360623.3		Q13415
ORC1	ENST00000371566.1 link	c.1186C>T	p.Arg396Trp	missense_variant, splice_region_variant	Exon 7 of 17	1		ENSP00000360621.1		Q13415

Frequencies

GnomAD3 genomes

AF:

0.00361

AC:

550

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0124

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00177

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:

0.000132

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000939

AC:

236

AN:

251424

AF XY:

0.000684

show subpopulations

Gnomad AFR exome

AF:

0.0121

Gnomad AMR exome

AF:

0.000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000528

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000431

AC:

629

AN:

1459246

Hom.:

Cov.:

AF XY:

0.000383

AC XY:

278

AN XY:

726132

show subpopulations

African (AFR)

AF:

0.0136

AC:

453

AN:

33426

American (AMR)

AF:

0.00116

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26114

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86192

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.000694

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000568

AC:

AN:

1109644

Other (OTH)

AF:

0.000879

AC:

AN:

60306

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

Heterozygous variant carriers

118

147

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00361

AC:

550

AN:

152304

Hom.:

Cov.:

AF XY:

0.00349

AC XY:

260

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.0123

AC:

512

AN:

41568

American (AMR)

AF:

0.00177

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

68024

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

108

135

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00155

Hom.:

Bravo

AF:

0.00405

ESP6500AA

AF:

0.0113

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00114

AC:

139

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Jul 07, 2015

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Meier-Gorlin syndrome 1

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided

Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.082

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.69

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.019

T;T

Eigen

Benign

-0.33

Eigen_PC

Benign

-0.24

FATHMM_MKL

Benign

0.59

LIST_S2

Benign

0.74

.;T

MetaRNN

Benign

0.0049

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.6

L;L

PhyloP100

0.10

PrimateAI

Benign

0.29

PROVEAN

Benign

-2.0

N;N

REVEL

Benign

0.072

Sift

Benign

0.085

T;T

Sift4G

Benign

0.082

T;T

Polyphen

0.048

B;B

Vest4

0.24

MVP

0.63

MPC

0.16

ClinPred

0.013

GERP RS

2.0

Varity_R

0.035

gMVP

0.28

Mutation Taster

=99/1

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00074

dbscSNV1_RF

Benign

0.054

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over