rs147588256

Positions:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_018714.3(COG1):c.2900C>G(p.Pro967Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000502 in 1,614,222 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00052 ( 0 hom. )

Consequence

COG1
NM_018714.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 4.18

Variant links:

Genes affected

COG1 (HGNC:6545): (component of oligomeric golgi complex 1) The protein encoded by this gene is one of eight proteins (Cog1-8) which form a Golgi-localized complex (COG) required for normal Golgi morphology and function. It is thought that this protein is required for steps in the normal medial and trans Golgi-associated processing of glycoconjugates and plays a role in the organization of the Golgi-localized complex. [provided by RefSeq, Jul 2008]

COG1 links:

FAM104A (HGNC:25918): (VCP nuclear cofactor family member 1)

FAM104A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.082861245).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000322 (49/152352) while in subpopulation NFE AF= 0.000544 (37/68020). AF 95% confidence interval is 0.000405. There are 0 homozygotes in gnomad4. There are 22 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COG1	NM_018714.3 linkuse as main transcript	c.2900C>G	p.Pro967Arg	missense_variant	14/14	ENST00000299886.9
FAM104A	NM_001098832.2 linkuse as main transcript	c.*1121G>C		3_prime_UTR_variant	4/4	ENST00000405159.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COG1	ENST00000299886.9 linkuse as main transcript	c.2900C>G	p.Pro967Arg	missense_variant	14/14	1	NM_018714.3	P1
FAM104A	ENST00000405159.8 linkuse as main transcript	c.*1121G>C		3_prime_UTR_variant	4/4	1	NM_001098832.2		Q969W3-2

Frequencies

GnomAD3 genomes

AF:

0.000322

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000282

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000544

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000490

AC:

123

AN:

251270

Hom.:

AF XY:

0.000501

AC XY:

AN XY:

135838

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000462

Gnomad NFE exome

AF:

0.000925

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000521

AC:

761

AN:

1461870

Hom.:

Cov.:

AF XY:

0.000496

AC XY:

361

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000487

Gnomad4 NFE exome

AF:

0.000622

Gnomad4 OTH exome

AF:

0.000563

GnomAD4 genome

AF:

0.000322

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000295

AC XY:

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.000192

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000282

Gnomad4 NFE

AF:

0.000544

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000663

Hom.:

Bravo

AF:

0.000321

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000610

AC:

EpiCase

AF:

0.000491

EpiControl

AF:

0.000711

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

COG1 congenital disorder of glycosylation

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 13, 2022	This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 967 of the COG1 protein (p.Pro967Arg). This variant is present in population databases (rs147588256, gnomAD 0.09%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with COG1-related conditions. ClinVar contains an entry for this variant (Variation ID: 324978). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Clinical Genomics Laboratory, Washington University in St. Louis	May 03, 2024	The COG1 c.2900C>G (p.Pro967Arg) variant, to our knowledge, has not been reported in the medical literature. The highest population minor allele frequency in the population database genome aggregation database (v.2.1.1) is 0.088% in the European non-Finnish population. Computational predictors suggest that the variant does not impact COG1 function. This variant has been reported in the ClinVar database as a germline variant of uncertain significance by three submitters. Due to limited information, and based on ACMG/AMP guidelines for variant interpretation (Richards S et al., PMID: 25741868), the clinical significance of this variant is uncertain at this time. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 20, 2022

The c.2900C>G (p.P967R) alteration is located in exon 14 (coding exon 14) of the COG1 gene. This alteration results from a C to G substitution at nucleotide position 2900, causing the proline (P) at amino acid position 967 to be replaced by an arginine (R). 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

0.23

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.040

Eigen

Benign

0.13

Eigen_PC

Benign

0.081

FATHMM_MKL

Benign

0.62

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.0049

MetaRNN

Benign

0.083

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.4

MutationTaster

Benign

1.0

N;D;D

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.7

REVEL

Benign

0.13

Sift

Uncertain

0.021

Sift4G

Uncertain

0.046

Polyphen

0.73

Vest4

0.57

MVP

0.35

MPC

0.32

ClinPred

0.038

GERP RS

6.2

Varity_R

0.074

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