Genetic Variant CPLX1:p.Asp118Gly (chr4-786553-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_006651.4(CPLX1):c.353A>G(p.Asp118Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000618 in 1,456,666 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

CPLX1
NM_006651.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.76

Variant links:

Genes affected

CPLX1 (HGNC:2309): (complexin 1) Proteins encoded by the complexin/synaphin gene family are cytosolic proteins that function in synaptic vesicle exocytosis. These proteins bind syntaxin, part of the SNAP receptor. The protein product of this gene binds to the SNAP receptor complex and disrupts it, allowing transmitter release. [provided by RefSeq, Jul 2008]

CPLX1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
CPLX1	NM_006651.4 link	c.353A>G	p.Asp118Gly	missense_variant	Exon 4 of 4	ENST00000304062.11	NP_006642.1	O14810
CPLX1	XM_011513391.2 link	c.308A>G	p.Asp103Gly	missense_variant	Exon 3 of 3		XP_011511693.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CPLX1	ENST00000304062.11 link	c.353A>G	p.Asp118Gly	missense_variant	Exon 4 of 4	1	NM_006651.4	ENSP00000305613.6	O14810
CPLX1	ENST00000505203.1 link	c.290A>G	p.Asp97Gly	missense_variant	Exon 5 of 5	2		ENSP00000425960.1	D6RI11
CPLX1	ENST00000504062.1 link	c.308A>G	p.Asp103Gly	missense_variant	Exon 3 of 3	3		ENSP00000421947.1	D6RAG3
CPLX1	ENST00000506404.1 link	n.406A>G		non_coding_transcript_exon_variant	Exon 2 of 2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000250

AC:

AN:

240080

Hom.:

AF XY:

0.0000153

AC XY:

AN XY:

130428

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000178

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000618

AC:

AN:

1456666

Hom.:

Cov.:

AF XY:

0.00000552

AC XY:

AN XY:

724208

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000181

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Aug 07, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 118 of the CPLX1 protein (p.Asp118Gly). This variant is present in population databases (no rsID available, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with CPLX1-related conditions. 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: "Probably Damaging"; Align-GVGD: "Class C0"). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.38

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.21

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.30

T;.;.

Eigen

Benign

0.0028

Eigen_PC

Benign

0.057

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

D;D;D

M_CAP

Benign

0.042

MetaRNN

Uncertain

0.55

D;D;D

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.4

L;.;.

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-2.1

N;D;D

REVEL

Benign

0.18

Sift

Uncertain

0.013

D;D;D

Sift4G

Uncertain

0.013

D;D;D

Polyphen

0.45

B;B;.

Vest4

0.46

MutPred

0.80

Gain of glycosylation at S115 (P = 0.0294);.;.;

MVP

0.34

MPC

1.3

ClinPred

0.32

GERP RS

3.8

Varity_R

0.32

gMVP

0.72

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over