chr16-46693080-A-G

Variant names:

• chr16-46693080-A-G
• rs797045853
• NM_014321.4:c.360-13A>G

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP3 BP6 BS1

The NM_014321.4(ORC6):​c.360-13A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000789 in 1,394,940 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000079 (0 hom.)
• Consequence: ORC6 NM_014321.4 intron
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:1
• Conservation: PhyloP100: -0.00800
• Publications: 0 publications found

Genes affected

ORC6 (HGNC:17151): (origin recognition complex subunit 6) 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. The protein encoded by this gene is a subunit of the ORC complex. Gene silencing studies with small interfering RNA demonstrated that this protein plays an essential role in coordinating chromosome replication and segregation with cytokinesis. [provided by RefSeq, Oct 2010]

ORC6 Gene-Disease associations (from GenCC):

• Meier-Gorlin syndrome 3

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P
• Meier-Gorlin syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• BP6: Variant 16-46693080-A-G is Benign according to our data. Variant chr16-46693080-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 211808.
• BS1: Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.00000789 (11/1394940) while in subpopulation MID AF = 0.0016 (9/5642). AF 95% confidence interval is 0.000832. There are 0 homozygotes in GnomAdExome4. There are 4 alleles in the male GnomAdExome4 subpopulation. Median coverage is 25. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ORC6	NM_014321.4	c.360-13A>G		intron_variant	Intron 3 of 6	ENST00000219097.7	NP_055136.1
ORC6	NR_037620.2	n.466-13A>G		intron_variant	Intron 3 of 6
ORC6	XM_011522978.4	c.360-13A>G		intron_variant	Intron 3 of 5		XP_011521280.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ORC6	ENST00000219097.7	c.360-13A>G		intron_variant	Intron 3 of 6	1	NM_014321.4	ENSP00000219097.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251266 AF XY: 0.00000736

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000789 AC: 11 AN: 1394940 Hom.: 0 Cov.: 25 AF XY: 0.00000573 AC XY: 4 AN XY: 698184

African (AFR) AF: 0.00 AC: 0 AN: 32154

American (AMR) AF: 0.00 AC: 0 AN: 44630

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25744

East Asian (EAS) AF: 0.00 AC: 0 AN: 39384

South Asian (SAS) AF: 0.00 AC: 0 AN: 84930

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53206

Middle Eastern (MID) AF: 0.00160 AC: 9 AN: 5642

European-Non Finnish (NFE) AF: 0.00000190 AC: 2 AN: 1051106

Other (OTH) AF: 0.00 AC: 0 AN: 58144

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not specified Uncertain:1

Jun 21, 2013

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Uncertain:1

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Meier-Gorlin syndrome 3 Benign:1

Mar 25, 2024

Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	2.2
DANN	Benign	0.61
PhyloP100		-0.0080

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.76		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.57		Position offset: 1
DS_AL_spliceai		0.76		Position offset: 13

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs797045853; hg19: chr16-46726992;