dbSNP rs113978322: SYNJ1:p.Ile1332Val (chr21-32631582-T-C) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_003895.4(SYNJ1):c.4252A>G(p.Ile1418Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000224 in 1,613,528 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0013 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 3 hom. )

Consequence

SYNJ1
NM_003895.4 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts U:1B:2

Conservation

PhyloP100: -0.539

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, PanelApp Australia
early-onset Parkinson disease 20
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp, PanelApp Australia
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

SYNJ1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005815953).

BP6

Variant 21-32631582-T-C is Benign according to our data. Variant chr21-32631582-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 478354.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00132 (200/151650) while in subpopulation AFR AF = 0.00466 (192/41190). AF 95% confidence interval is 0.00412. There are 2 homozygotes in GnomAd4. There are 96 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003895.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SYNJ1	NM_203446.3	MANE Select	c.*223A>G		3_prime_UTR	Exon 33 of 33	NP_982271.3	O43426-2
SYNJ1	NM_003895.4		c.4252A>G	p.Ile1418Val	missense	Exon 32 of 32	NP_003886.3
SYNJ1	NM_001160306.2		c.3994A>G	p.Ile1332Val	missense	Exon 28 of 28	NP_001153778.1	A0A0D9SGJ6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SYNJ1	ENST00000630077.3	TSL:1	c.3994A>G	p.Ile1332Val	missense	Exon 28 of 28	ENSP00000487560.1	A0A0D9SGJ6
SYNJ1	ENST00000674351.1	MANE Select	c.*223A>G		3_prime_UTR	Exon 33 of 33	ENSP00000501530.1	O43426-2
SYNJ1	ENST00000674308.1		c.4135A>G	p.Ile1379Val	missense	Exon 32 of 32	ENSP00000501426.1	O43426-1

Frequencies

GnomAD3 genomes

AF:

0.00128

AC:

194

AN:

151532

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00453

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.0000294

Gnomad OTH

AF:

0.00145

GnomAD2 exomes

AF:

0.000304

AC:

AN:

250222

AF XY:

0.000222

show subpopulations

Gnomad AFR exome

AF:

0.00442

Gnomad AMR exome

AF:

0.0000870

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000111

AC:

162

AN:

1461878

Hom.:

Cov.:

AF XY:

0.0000825

AC XY:

AN XY:

727240

show subpopulations

African (AFR)

AF:

0.00358

AC:

120

AN:

33480

American (AMR)

AF:

0.0000894

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1112002

Other (OTH)

AF:

0.000546

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.00132

AC:

200

AN:

151650

Hom.:

Cov.:

AF XY:

0.00130

AC XY:

AN XY:

74110

show subpopulations

African (AFR)

AF:

0.00466

AC:

192

AN:

41190

American (AMR)

AF:

0.000197

AC:

AN:

15222

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5148

South Asian (SAS)

AF:

0.00

AC:

AN:

4768

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67982

Other (OTH)

AF:

0.00144

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000404

Hom.:

Bravo

AF:

0.00138

ESP6500AA

AF:

0.00431

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000428

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Early-onset Parkinson disease 20;C4479313:Developmental and epileptic encephalopathy, 53 (1)

Inborn genetic diseases (1)

SYNJ1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.46

CADD

Benign

8.2

(source)

DANN

Benign

0.63

DEOGEN2

Benign

0.21

Eigen

Benign

-0.78

Eigen_PC

Benign

-0.66

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.58

M_CAP

Benign

0.015

MetaRNN

Benign

0.0058

MetaSVM

Benign

-0.74

PhyloP100

-0.54

PrimateAI

Benign

0.27

PROVEAN

Benign

0.10

REVEL

Benign

0.20

Sift

Benign

0.79

Sift4G

Benign

0.62

Vest4

0.081

MVP

0.50

MPC

0.097

ClinPred

0.00069

GERP RS

0.0067

gMVP

0.085

Mutation Taster

=90/10

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over