rs761431638

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_180990.4(ZACN):​c.982G>A​(p.Gly328Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000149 in 1,612,210 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G328V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

ZACN
NM_180990.4 missense

Scores

19

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.282

Publications

0 publications found
Variant links:
Genes affected
ZACN (HGNC:29504): (zinc activated ion channel) LGICZ1 is a zinc-activated ligand-gated ion channel that defines a new subgroup of the cysteine-loop superfamily of ligand-gated ion channels (Davies et al., 2003 [PubMed 12381728]).[supplied by OMIM, Mar 2008]
EXOC7 (HGNC:23214): (exocyst complex component 7) The protein encoded by this gene is a component of the exocyst complex. The exocyst complex plays a critical role in vesicular trafficking and the secretory pathway by targeting post-Golgi vesicles to the plasma membrane. The encoded protein is required for assembly of the exocyst complex and docking of the complex to the plasma membrane. The encoded protein may also play a role in pre-mRNA splicing through interactions with pre-mRNA-processing factor 19. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 4. [provided by RefSeq, Nov 2011]
EXOC7 Gene-Disease associations (from GenCC):
  • neurodevelopmental disorder with seizures and brain atrophy
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • complex neurodevelopmental disorder
    Inheritance: AR Classification: MODERATE Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.026806265).
BP6
Variant 17-76081983-G-A is Benign according to our data. Variant chr17-76081983-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2369431.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ZACNNM_180990.4 linkc.982G>A p.Gly328Ser missense_variant Exon 8 of 9 ENST00000334586.10 NP_851321.2 Q401N2-1
EXOC7NM_001013839.4 linkc.*1665C>T 3_prime_UTR_variant Exon 19 of 19 ENST00000589210.6 NP_001013861.1 Q9UPT5-1Q63HP7

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ZACNENST00000334586.10 linkc.982G>A p.Gly328Ser missense_variant Exon 8 of 9 1 NM_180990.4 ENSP00000334854.5 Q401N2-1
EXOC7ENST00000589210.6 linkc.*1665C>T 3_prime_UTR_variant Exon 19 of 19 1 NM_001013839.4 ENSP00000468404.1 Q9UPT5-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152194
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
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
GnomAD2 exomes
AF:
0.0000326
AC:
8
AN:
245410
AF XY:
0.00000748
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000117
Gnomad ASJ exome
AF:
0.000102
Gnomad EAS exome
AF:
0.0000547
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000182
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000158
AC:
23
AN:
1460016
Hom.:
0
Cov.:
34
AF XY:
0.0000124
AC XY:
9
AN XY:
726322
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33454
American (AMR)
AF:
0.0000898
AC:
4
AN:
44534
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26094
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39684
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86230
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52274
Middle Eastern (MID)
AF:
0.000174
AC:
1
AN:
5762
European-Non Finnish (NFE)
AF:
0.0000135
AC:
15
AN:
1111660
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60324
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.510
Heterozygous variant carriers
0
2
4
6
8
10
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152194
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74352
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41460
American (AMR)
AF:
0.00
AC:
0
AN:
15292
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5180
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68030
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000282
Hom.:
0
Bravo
AF:
0.00000756
ExAC
AF:
0.0000330
AC:
4

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Benign:1
May 11, 2022
Ambry Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.062
BayesDel_addAF
Benign
-0.38
T
BayesDel_noAF
Benign
-0.55
CADD
Benign
0.074
DANN
Benign
0.71
DEOGEN2
Benign
0.0013
T
Eigen
Benign
-1.7
Eigen_PC
Benign
-1.5
FATHMM_MKL
Benign
0.0056
N
LIST_S2
Benign
0.38
T
M_CAP
Benign
0.014
T
MetaRNN
Benign
0.027
T
MetaSVM
Benign
-0.90
T
MutationAssessor
Benign
-2.0
N
PhyloP100
-0.28
PrimateAI
Benign
0.29
T
PROVEAN
Benign
1.4
N
REVEL
Benign
0.15
Sift
Benign
0.67
T
Sift4G
Benign
1.0
T
Polyphen
0.0
B
Vest4
0.11
MutPred
0.31
Gain of glycosylation at G328 (P = 0.0084);
MVP
0.048
MPC
0.074
ClinPred
0.018
T
GERP RS
0.62
Varity_R
0.033
gMVP
0.085
Mutation Taster
=98/2
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

Publications

Other links and lift over

dbSNP: rs761431638; hg19: chr17-74078064; API