rs148901211

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_203446.3(SYNJ1):​c.1555A>G​(p.Ser519Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000944 in 1,610,444 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000095 ( 0 hom. )

Consequence

SYNJ1
NM_203446.3 missense

Scores

4
15

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 2.91

Publications

1 publications found
Variant links:
Genes affected
SYNJ1 (HGNC:11503): (synaptojanin 1) This gene encodes a phosphoinositide phosphatase that regulates levels of membrane phosphatidylinositol-4,5-bisphosphate. As such, expression of this enzyme may affect synaptic transmission and membrane trafficking. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]
SYNJ1 Gene-Disease associations (from GenCC):
  • genetic developmental and epileptic encephalopathy
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • developmental and epileptic encephalopathy, 53
    Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
  • early-onset Parkinson disease 20
    Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
  • undetermined early-onset epileptic encephalopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • atypical juvenile parkinsonism
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • young-onset Parkinson disease
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.13790917).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SYNJ1NM_203446.3 linkc.1555A>G p.Ser519Gly missense_variant Exon 14 of 33 ENST00000674351.1 NP_982271.3 O43426-2C9JFZ1Q05CZ1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SYNJ1ENST00000674351.1 linkc.1555A>G p.Ser519Gly missense_variant Exon 14 of 33 NM_203446.3 ENSP00000501530.1 O43426-2

Frequencies

GnomAD3 genomes
AF:
0.0000854
AC:
13
AN:
152214
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:
0.000191
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000363
AC:
9
AN:
248158
AF XY:
0.0000223
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000798
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000953
AC:
139
AN:
1458230
Hom.:
0
Cov.:
30
AF XY:
0.0000937
AC XY:
68
AN XY:
725454
show subpopulations
African (AFR)
AF:
0.0000300
AC:
1
AN:
33308
American (AMR)
AF:
0.00
AC:
0
AN:
44046
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26034
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39482
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85586
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53334
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5754
European-Non Finnish (NFE)
AF:
0.000115
AC:
128
AN:
1110488
Other (OTH)
AF:
0.000166
AC:
10
AN:
60198
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.466
Heterozygous variant carriers
0
8
16
25
33
41
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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:
0.0000854
AC:
13
AN:
152214
Hom.:
0
Cov.:
32
AF XY:
0.0000538
AC XY:
4
AN XY:
74350
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41466
American (AMR)
AF:
0.00
AC:
0
AN:
15274
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3466
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5206
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.000191
AC:
13
AN:
68044
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.506
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.0000961
Hom.:
0
Bravo
AF:
0.0000756
TwinsUK
AF:
0.000539
AC:
2
ALSPAC
AF:
0.00
AC:
0
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000349
AC:
3
ExAC
AF:
0.0000577
AC:
7
EpiCase
AF:
0.000110
EpiControl
AF:
0.0000598

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Early-onset Parkinson disease 20;C4479313:Developmental and epileptic encephalopathy, 53 Uncertain:1
Jul 12, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces serine, which is neutral and polar, with glycine, which is neutral and non-polar, at codon 558 of the SYNJ1 protein (p.Ser558Gly). This variant is present in population databases (rs148901211, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with SYNJ1-related conditions. ClinVar contains an entry for this variant (Variation ID: 478329). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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. -

not provided Uncertain:1
Feb 01, 2020
CeGaT Center for Human Genetics Tuebingen
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.066
BayesDel_addAF
Benign
-0.073
T
BayesDel_noAF
Benign
-0.15
CADD
Benign
23
DANN
Uncertain
0.99
DEOGEN2
Benign
0.29
.;T;.;T;T;.
Eigen
Benign
-0.15
Eigen_PC
Benign
0.051
FATHMM_MKL
Uncertain
0.86
D
LIST_S2
Benign
0.84
T;T;D;T;T;T
M_CAP
Benign
0.027
D
MetaRNN
Benign
0.14
T;T;T;T;T;T
MetaSVM
Uncertain
0.25
D
MutationAssessor
Benign
0.36
N;.;.;.;.;.
PhyloP100
2.9
PrimateAI
Uncertain
0.51
T
PROVEAN
Benign
-1.3
N;N;.;N;N;N
REVEL
Benign
0.24
Sift
Benign
0.26
T;T;.;T;T;T
Sift4G
Benign
0.42
T;T;T;T;T;.
Polyphen
0.0020
B;.;.;B;.;.
Vest4
0.14
MVP
0.84
MPC
0.52
ClinPred
0.12
T
GERP RS
5.3
gMVP
0.46
Mutation Taster
=84/16
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.10
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: rs148901211; hg19: chr21-34045821; API