6-87601837-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_012381.4(ORC3):c.133G>A(p.Glu45Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000018 in 1,611,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

ORC3
NM_012381.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.20

Variant links:

Genes affected

ORC3 (HGNC:8489): (origin recognition complex subunit 3) 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. Studies of a similar gene in Drosophila suggested a possible role of this protein in neuronal proliferation and olfactory memory. Alternatively spliced transcript variants encoding distinct isoforms have been reported for this gene. [provided by RefSeq, Jul 2008]

ORC3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20863634).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ORC3	NM_012381.4 linkuse as main transcript	c.133G>A	p.Glu45Lys	missense_variant	3/20	ENST00000392844.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ORC3	ENST00000392844.8 linkuse as main transcript	c.133G>A	p.Glu45Lys	missense_variant	3/20	1	NM_012381.4	A1	Q9UBD5-1
ORC3	ENST00000257789.4 linkuse as main transcript	c.133G>A	p.Glu45Lys	missense_variant	3/20	1		P4	Q9UBD5-2
ORC3	ENST00000546266.5 linkuse as main transcript	c.-252-1547G>A		intron_variant		2			Q9UBD5-3
ORC3	ENST00000681069.1 linkuse as main transcript	n.166G>A		non_coding_transcript_exon_variant	3/15

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251364

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135856

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1459816

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

726374

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000829

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152090

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74288

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000756

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00000824

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 20, 2021

The c.133G>A (p.E45K) alteration is located in exon 3 (coding exon 3) of the ORC3 gene. This alteration results from a G to A substitution at nucleotide position 133, causing the glutamic acid (E) at amino acid position 45 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.41

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.0067

T;.

Eigen

Benign

0.030

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.87

D;D

M_CAP

Benign

0.0097

MetaRNN

Benign

0.21

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;L

MutationTaster

Benign

0.99

D;D;D;D

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-0.81

N;N

REVEL

Benign

0.11

Sift

Benign

0.26

T;T

Sift4G

Benign

0.54

T;T

Polyphen

0.25

B;B

Vest4

0.37

MVP

0.30

MPC

0.14

ClinPred

0.089

GERP RS

5.2

Varity_R

0.17

gMVP

0.24

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over