Variant 6-87616408-A-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_012381.4(ORC3):c.968A>C(p.Asn323Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000158 in 1,459,820 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000046 ( 0 hom. )

Consequence

ORC3
NM_012381.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.17

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ORC3	NM_012381.4 linkuse as main transcript	c.968A>C	p.Asn323Thr	missense_variant	9/20	ENST00000392844.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ORC3	ENST00000392844.8 linkuse as main transcript	c.968A>C	p.Asn323Thr	missense_variant	9/20	1	NM_012381.4	A1	Q9UBD5-1
ORC3	ENST00000257789.4 linkuse as main transcript	c.968A>C	p.Asn323Thr	missense_variant	9/20	1		P4	Q9UBD5-2
ORC3	ENST00000546266.5 linkuse as main transcript	c.539A>C	p.Asn180Thr	missense_variant	8/19	2			Q9UBD5-3
ORC3	ENST00000681069.1 linkuse as main transcript	n.1001A>C		non_coding_transcript_exon_variant	9/15

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000362

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000201

AC:

AN:

249372

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

134952

show subpopulations

Gnomad AFR exome

AF:

0.000249

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.00000459

AC:

AN:

1307618

Hom.:

Cov.:

AF XY:

0.00000607

AC XY:

AN XY:

658500

show subpopulations

Gnomad4 AFR exome

AF:

0.000165

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000181

GnomAD4 genome

AF:

0.000112

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.000362

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000341

Hom.:

Bravo

AF:

0.0000831

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

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

Nov 30, 2022

The c.968A>C (p.N323T) alteration is located in exon 9 (coding exon 9) of the ORC3 gene. This alteration results from a A to C substitution at nucleotide position 968, causing the asparagine (N) at amino acid position 323 to be replaced by a threonine (T). 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

0.32

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.35

CADD

Uncertain

DANN

Uncertain

1.0

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Benign

0.019

MetaRNN

Uncertain

0.66

D;D;D

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-4.4

D;D;D

REVEL

Benign

0.20

Sift

Uncertain

0.010

D;D;D

Sift4G

Uncertain

0.017

D;T;T

Polyphen

0.98, 0.95

.;D;P

Vest4

0.82

MVP

0.33

MPC

0.53

ClinPred

0.97

GERP RS

3.6

Varity_R

0.48

gMVP

0.54

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

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