NM_001144061.2:c.2221C>A

Variant names:

• chr11-14466351-G-T
• NM_001144061.2:c.2221C>A

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_001144061.2(COPB1):​c.2221C>A​(p.Leu741Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: COPB1 NM_001144061.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.21
• Publications: 0 publications found

Genes affected

COPB1 (HGNC:2231): (COPI coat complex subunit beta 1) This gene encodes a protein subunit of the coatomer complex associated with non-clathrin coated vesicles. The coatomer complex, also known as the coat protein complex 1, forms in the cytoplasm and is recruited to the Golgi by activated guanosine triphosphatases. Once at the Golgi membrane, the coatomer complex may assist in the movement of protein and lipid components back to the endoplasmic reticulum. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jan 2009]

COPB1 Gene-Disease associations (from GenCC):

• Baralle-Macken syndrome

  Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 2 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 2.3822 (below the threshold of 3.09). Trascript score misZ: 2.5602 (below the threshold of 3.09). GenCC associations: The gene is linked to Baralle-Macken syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.913

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001144061.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COPB1	NM_001144061.2	MANE Select	c.2221C>A	p.Leu741Met	missense	Exon 17 of 22	NP_001137533.1	P53618
	COPB1	NM_001144062.2		c.2221C>A	p.Leu741Met	missense	Exon 17 of 22	NP_001137534.1	P53618
	COPB1	NM_016451.5		c.2221C>A	p.Leu741Met	missense	Exon 17 of 22	NP_057535.1	P53618

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COPB1	ENST00000439561.7	TSL:1 MANE Select	c.2221C>A	p.Leu741Met	missense	Exon 17 of 22	ENSP00000397873.2	P53618
	COPB1	ENST00000249923.7	TSL:1	c.2221C>A	p.Leu741Met	missense	Exon 17 of 22	ENSP00000249923.3	P53618
	COPB1	ENST00000890285.1		c.2329C>A	p.Leu777Met	missense	Exon 18 of 23	ENSP00000560344.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.49	T
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Benign	0.070	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Uncertain	0.0087	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		1.2
PrimateAI	Pathogenic	0.91	D
PROVEAN	Benign	-1.8	N
REVEL	Uncertain	0.54
Sift	Uncertain	0.027	D
Sift4G	Uncertain	0.022	D
Polyphen		1.0	D
Vest4		0.79
MutPred		0.85		Loss of sheet (P = 0.1501)
MVP		0.68
MPC		0.81
ClinPred		0.93	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.26
gMVP		0.56
Mutation Taster		=62/38	polymorphism

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

Other links and lift over

hg19: chr11-14487897; COSMIC: COSV99999239;