chr16-57119255-T-G

Position:

• chr16-57119255-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_152727.6(CPNE2):​c.568T>G​(p.Trp190Gly) variant causes a missense change involving the alteration of a 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: CPNE2 NM_152727.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.02

Genes affected

CPNE2 (HGNC:2315): (copine 2) Calcium-dependent membrane-binding proteins may regulate molecular events at the interface of the cell membrane and cytoplasm. This gene is one of several genes that encode a calcium-dependent protein containing two N-terminal type II C2 domains and an integrin A domain-like sequence in the C-terminus. Sequence analysis identified multiple alternatively spliced transcript variants but their full-length natures could not be determined. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.812

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CPNE2	NM_152727.6	c.568T>G	p.Trp190Gly	missense_variant	6/16	ENST00000290776.13	NP_689940.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CPNE2	ENST00000290776.13	c.568T>G	p.Trp190Gly	missense_variant	6/16	1	NM_152727.6	ENSP00000290776.8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 07, 2024

The c.568T>G (p.W190G) alteration is located in exon 6 (coding exon 5) of the CPNE2 gene. This alteration results from a T to G substitution at nucleotide position 568, causing the tryptophan (W) at amino acid position 190 to be replaced by a glycine (G). 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	Uncertain	0.37
BayesDel_addAF	Pathogenic	0.36	D
BayesDel_noAF	Pathogenic	0.28
CADD	Pathogenic	27
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.45	T;T;T;.
Eigen	Uncertain	0.54
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Benign	0.84	.;.;T;T
M_CAP	Uncertain	0.23	D
MetaRNN	Pathogenic	0.81	D;D;D;D
MetaSVM	Uncertain	-0.13	T
MutationAssessor	Uncertain	2.9	M;M;M;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-9.1	D;D;D;D
REVEL	Pathogenic	0.69
Sift	Uncertain	0.020	D;D;D;D
Sift4G	Benign	0.073	T;T;T;D
Polyphen		0.34	B;B;B;.
Vest4		0.87
MutPred		0.53		Gain of disorder (P = 0.0039);Gain of disorder (P = 0.0039);Gain of disorder (P = 0.0039);.;
MVP		0.75
MPC		1.8
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.91
gMVP		0.71

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: chr16-57153167;