Genetic Variant COG6:p.Lys41Asn (chr13-39655849-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_020751.3(COG6):c.123G>T(p.Lys41Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,454,588 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. K41K) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

COG6
NM_020751.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.07

Publications

0 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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020751.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
COG6	NM_020751.3	MANE Select	c.123G>T	p.Lys41Asn	missense	Exon 1 of 19	NP_065802.1
COG6	NM_001145079.2		c.123G>T	p.Lys41Asn	missense	Exon 1 of 19	NP_001138551.1
COG6	NR_026745.1		n.223G>T		non_coding_transcript_exon	Exon 1 of 20

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
COG6	ENST00000455146.8	TSL:1 MANE Select	c.123G>T	p.Lys41Asn	missense	Exon 1 of 19	ENSP00000397441.2
COG6	ENST00000416691.6	TSL:1	c.123G>T	p.Lys41Asn	missense	Exon 1 of 19	ENSP00000403733.1
COG6	ENST00000356576.8	TSL:1	n.123G>T		non_coding_transcript_exon	Exon 1 of 20	ENSP00000348983.4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1454588

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

723204

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33296

American (AMR)

AF:

0.00

AC:

AN:

44162

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26016

East Asian (EAS)

AF:

0.00

AC:

AN:

39444

South Asian (SAS)

AF:

0.00

AC:

AN:

85338

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52524

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4366

European-Non Finnish (NFE)

AF:

9.01e-7

AC:

AN:

1109484

Other (OTH)

AF:

0.00

AC:

AN:

59958

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.41

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.18

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.087

MetaRNN

Uncertain

0.69

MetaSVM

Benign

-0.39

MutationAssessor

Uncertain

2.8

PhyloP100

2.1

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.6

REVEL

Benign

0.28

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.70

MutPred

0.57

Gain of catalytic residue at K38 (P = 0.0157)

MVP

0.25

MPC

0.25

ClinPred

0.99

GERP RS

5.0

PromoterAI

0.013

Neutral

(source)

Varity_R

0.85

gMVP

0.66

Mutation Taster

=54/46

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over