1-230659542-C-T

Variant summary

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

The NM_007357.3(COG2):c.151C>T(p.Leu51Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: COG2 NM_007357.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.63

Genes affected

COG2 (HGNC:6546): (component of oligomeric golgi complex 2) This gene encodes a subunit of the conserved oligomeric Golgi complex that is required for maintaining normal structure and activity of the Golgi complex. The encoded protein specifically interacts with the USO1 vesicle docking protein and may be necessary for normal Golgi ribbon formation and trafficking of Golgi enzymes. Mutations of this gene are associated with abnormal glycosylation within the Golgi apparatus. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Feb 2009]

ACMG classification

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
COG2	NM_007357.3	c.151C>T	p.Leu51Phe	missense_variant	2/18	ENST00000366669.9
COG2	NM_001145036.2	c.151C>T	p.Leu51Phe	missense_variant	2/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COG2	ENST00000366669.9	c.151C>T	p.Leu51Phe	missense_variant	2/18	1	NM_007357.3	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Congenital disorder of glycosylation, type IIq Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 09, 2022

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. 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: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C15"). ClinVar contains an entry for this variant (Variation ID: 1470130). This variant has not been reported in the literature in individuals affected with COG2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 51 of the COG2 protein (p.Leu51Phe). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.079	T
BayesDel_noAF	Benign	-0.35
Cadd	Benign	23
Dann	Uncertain	1.0
DEOGEN2	Benign	0.17	T;.
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.48	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L;L
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-1.7	N;N
REVEL	Benign	0.15
Sift	Benign	0.059	T;T
Sift4G	Benign	0.072	T;T
Polyphen		0.91	P;.
Vest4		0.56
MutPred		0.54		Gain of helix (P = 0.0861);Gain of helix (P = 0.0861);
MVP		0.36
MPC		0.59
ClinPred		0.92	D
GERP RS		4.2
Varity_R		0.18
gMVP		0.19

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-230795288;