rs769409347

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_181741.4(ORC4):c.763-4T>G variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000418 in 1,505,488 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000041 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

ORC4
NM_181741.4 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.0001233

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 1.09

Variant links:

Genes affected

ORC4 (HGNC:8490): (origin recognition complex subunit 4) The origin recognition complex (ORC) is a highly conserved six subunit 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. This gene encodes a subunit of the ORC complex. Several alternatively spliced transcript variants, some of which encode the same protein, have been reported for this gene. [provided by RefSeq, Oct 2010]

ORC4 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 2-147943526-A-C is Benign according to our data. Variant chr2-147943526-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 436119.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ORC4	NM_181741.4 linkuse as main transcript	c.763-4T>G		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000392857.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ORC4	ENST00000392857.10 linkuse as main transcript	c.763-4T>G		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_181741.4	P1	O43929-1

Frequencies

GnomAD3 genomes

AF:

0.0000414

AC:

AN:

120788

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000168

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:

0.0000343

Gnomad OTH

AF:

0.000631

GnomAD3 exomes

AF:

0.000120

AC:

AN:

192252

Hom.:

AF XY:

0.000134

AC XY:

AN XY:

104546

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000460

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000777

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000806

Gnomad OTH exome

AF:

0.000402

GnomAD4 exome

AF:

0.0000419

AC:

AN:

1384700

Hom.:

Cov.:

AF XY:

0.0000519

AC XY:

AN XY:

693076

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000295

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000949

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000230

Gnomad4 OTH exome

AF:

0.000173

GnomAD4 genome

AF:

0.0000414

AC:

AN:

120788

Hom.:

Cov.:

AF XY:

0.0000169

AC XY:

AN XY:

59070

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000168

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000343

Gnomad4 OTH

AF:

0.000631

Alfa

AF:

0.0000284

Hom.:

Bravo

AF:

0.0000604

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Sep 14, 2015

- -

ORC4-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 18, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

Cadd

Benign

5.6

Dann

Benign

0.79

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00012

dbscSNV1_RF

Benign

0.0060

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