Genetic Variant NM_020751.3:c.1961C>G (chr13-39751080-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_020751.3(COG6):c.1961C>G(p.Thr654Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000248 in 1,613,464 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T654M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

COG6
NM_020751.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.34

Publications

7 publications found

Variant links:

Genes affected

COG6 (HGNC:18621): (component of oligomeric golgi complex 6) This gene encodes a subunit of the conserved oligomeric Golgi complex that is required for maintaining normal structure and activity of the Golgi apparatus. The encoded protein is organized with conserved oligomeric Golgi complex components 5, 7 and 8 into a sub-complex referred to as lobe B. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Feb 2009]

COG6 Gene-Disease associations (from GenCC):

COG6-congenital disorder of glycosylation
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, Labcorp Genetics (formerly Invitae)
hypohidrosis-enamel hypoplasia-palmoplantar keratoderma-intellectual disability syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

COG6 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15315172).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COG6	NM_020751.3 link	c.1961C>G	p.Thr654Arg	missense_variant	Exon 19 of 19	ENST00000455146.8	NP_065802.1	Q9Y2V7-1A0A024RDW5
COG6	XM_011535168.2 link	c.2096C>G	p.Thr699Arg	missense_variant	Exon 20 of 20		XP_011533470.1
COG6	NR_026745.1 link	n.2126C>G		non_coding_transcript_exon_variant	Exon 20 of 20
COG6	NM_001145079.2 link	c.1826+23532C>G		intron_variant	Intron 18 of 18		NP_001138551.1	Q9Y2V7-2A0A140VJG7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
COG6	ENST00000455146.8 link	c.1961C>G	p.Thr654Arg	missense_variant	Exon 19 of 19	1	NM_020751.3	ENSP00000397441.2	Q9Y2V7-1
COG6	ENST00000356576.8 link	n.*1798C>G		non_coding_transcript_exon_variant	Exon 20 of 20	1		ENSP00000348983.4	Q9Y2V7-4
COG6	ENST00000356576.8 link	n.*1798C>G		3_prime_UTR_variant	Exon 20 of 20	1		ENSP00000348983.4	Q9Y2V7-4
COG6	ENST00000416691.6 link	c.1826+23532C>G		intron_variant	Intron 18 of 18	1		ENSP00000403733.1	Q9Y2V7-2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461320

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726956

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33450

American (AMR)

AF:

0.00

AC:

AN:

44660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39622

South Asian (SAS)

AF:

0.00

AC:

AN:

86238

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53386

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111704

Other (OTH)

AF:

0.00

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74326

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41424

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.037

BayesDel_noAF

Benign

-0.29

CADD

Benign

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.027

Eigen

Benign

-0.0013

Eigen_PC

Benign

0.14

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.86

M_CAP

Benign

0.012

MetaRNN

Benign

0.15

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.1

PhyloP100

5.3

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.4

REVEL

Benign

0.14

Sift

Benign

0.53

Sift4G

Benign

0.35

Polyphen

0.041

Vest4

0.20

MutPred

0.44

Gain of MoRF binding (P = 2e-04);

MVP

0.54

MPC

0.060

ClinPred

0.66

GERP RS

5.8

Varity_R

0.20

gMVP

0.57

Mutation Taster

=68/32

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over