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GeneBe

1-52373284-G-A

Variant summary

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

The NM_004153.4(ORC1):c.2483C>T(p.Ser828Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,876 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as no classification for the single variant (no stars).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ORC1
NM_004153.4 missense

Scores

4
7
7

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.39
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]

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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
ORC1NM_004153.4 linkuse as main transcriptc.2483C>T p.Ser828Phe missense_variant 17/17 ENST00000371568.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ORC1ENST00000371568.8 linkuse as main transcriptc.2483C>T p.Ser828Phe missense_variant 17/171 NM_004153.4 P1
ORC1ENST00000371566.1 linkuse as main transcriptc.2483C>T p.Ser828Phe missense_variant 17/171 P1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251464
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135908
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1461876
Hom.:
0
Cov.:
31
AF XY:
0.00000275
AC XY:
2
AN XY:
727234
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
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:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.35
BayesDel_addAF
Benign
-0.17
T
BayesDel_noAF
Benign
-0.38
Cadd
Pathogenic
27
Dann
Uncertain
1.0
DEOGEN2
Benign
0.097
T;T
Eigen
Pathogenic
0.74
Eigen_PC
Pathogenic
0.74
FATHMM_MKL
Pathogenic
0.99
D
M_CAP
Benign
0.019
T
MetaRNN
Uncertain
0.46
T;T
MetaSVM
Benign
-0.69
T
MutationAssessor
Uncertain
2.1
M;M
MutationTaster
Benign
1.0
D;D
PrimateAI
Benign
0.46
T
PROVEAN
Pathogenic
-4.7
D;D
REVEL
Uncertain
0.33
Sift
Uncertain
0.0030
D;D
Sift4G
Uncertain
0.0060
D;D
Polyphen
0.96
D;D
Vest4
0.19
MutPred
0.56
Gain of helix (P = 0.2059);Gain of helix (P = 0.2059);
MVP
0.74
MPC
0.64
ClinPred
0.97
D
GERP RS
5.3
Varity_R
0.93
gMVP
0.32

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: rs781559609; hg19: chr1-52838956; API