4-786524-G-T

Position:

chr4-786524-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP5BP4

The NM_006651.4(CPLX1):c.382C>A(p.Leu128Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000725 in 1,599,682 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000071 ( 0 hom. )

Consequence

CPLX1
NM_006651.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:2

Conservation

PhyloP100: 7.50

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;

PP5

Variant 4-786524-G-T is Pathogenic according to our data. Variant chr4-786524-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 523650.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=2}. Variant chr4-786524-G-T is described in Lovd as [Pathogenic].

BP4

Computational evidence support a benign effect (MetaRNN=0.054480672). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CPLX1	NM_006651.4 linkuse as main transcript	c.382C>A	p.Leu128Met	missense_variant	4/4	ENST00000304062.11
CPLX1	XM_011513391.2 linkuse as main transcript	c.337C>A	p.Leu113Met	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
CPLX1	ENST00000304062.11 linkuse as main transcript	c.382C>A	p.Leu128Met	missense_variant	4/4	1	NM_006651.4	P1
CPLX1	ENST00000505203.1 linkuse as main transcript	c.319C>A	p.Leu107Met	missense_variant	5/5	2
CPLX1	ENST00000506404.1 linkuse as main transcript	n.435C>A		non_coding_transcript_exon_variant	2/2	2
CPLX1	ENST00000504062.1 linkuse as main transcript			downstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152048

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00317

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000923

AC:

AN:

227544

Hom.:

AF XY:

0.000113

AC XY:

AN XY:

123750

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00210

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000984

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000712

AC:

103

AN:

1447634

Hom.:

Cov.:

AF XY:

0.0000654

AC XY:

AN XY:

719006

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00240

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000193

Gnomad4 NFE exome

AF:

0.0000280

Gnomad4 OTH exome

AF:

0.000151

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152048

Hom.:

Cov.:

AF XY:

0.0000943

AC XY:

AN XY:

74270

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00317

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000196

Hom.:

Bravo

AF:

0.0000945

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000496

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2Uncertain:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Developmental and epileptic encephalopathy, 63

Pathogenic:2Uncertain:1

Likely pathogenic, criteria provided, single submitter	research	Institute of Human Genetics, University of Leipzig Medical Center	Jun 25, 2017	- -
Uncertain significance, criteria provided, single submitter	curation	SIB Swiss Institute of Bioinformatics	Oct 15, 2018	This variant is interpreted as Uncertain Significance - Insufficient Evidence, for Epileptic encephalopathy, early infantile, 63, autosomal recessive. The following ACMG Tag(s) were applied: PM2 => Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. -
Pathogenic, no assertion criteria provided	literature only	OMIM	Nov 17, 2020	- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Dec 02, 2021

This sequence change replaces leucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 128 of the CPLX1 protein (p.Leu128Met). This variant is present in population databases (rs371709824, gnomAD 0.2%). This missense change has been observed in individual(s) with severe infantile myoclonic epilepsy and intellectual disability (PMID: 28422131). ClinVar contains an entry for this variant (Variation ID: 523650). 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

Benign

0.27

BayesDel_addAF

Uncertain

0.013

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

T;.

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.051

MetaRNN

Benign

0.054

T;T

MetaSVM

Benign

-0.58

MutationAssessor

Uncertain

2.2

M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.63

N;N

REVEL

Benign

0.15

Sift

Benign

0.12

T;T

Sift4G

Benign

0.20

T;T

Polyphen

0.95

P;P

Vest4

0.37

MVP

0.34

MPC

1.1

ClinPred

0.38

GERP RS

3.8

Varity_R

0.29

gMVP

0.58

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