chr21-32631077-G-A

Position:

chr21-32631077-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The ENST00000433931.7(SYNJ1):c.4757C>T(p.Pro1586Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00061 in 1,614,216 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. P1586P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0027 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00039 ( 3 hom. )

Consequence

SYNJ1
ENST00000433931.7 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.241

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006534189).

BP6

Variant 21-32631077-G-A is Benign according to our data. Variant chr21-32631077-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 478361.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 = 0.00269 (410/152344) while in subpopulation AFR AF= 0.00899 (374/41580). AF 95% confidence interval is 0.00824. There are 2 homozygotes in gnomad4. There are 202 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNJ1	NM_203446.3 linkuse as main transcript	c.*728C>T		3_prime_UTR_variant	33/33	ENST00000674351.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNJ1	ENST00000674351.1 linkuse as main transcript	c.*728C>T		3_prime_UTR_variant	33/33		NM_203446.3		O43426-2

Frequencies

GnomAD3 genomes

AF:

0.00268

AC:

408

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00897

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00157

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000819

AC:

206

AN:

251398

Hom.:

AF XY:

0.000648

AC XY:

AN XY:

135872

show subpopulations

Gnomad AFR exome

AF:

0.00818

Gnomad AMR exome

AF:

0.00153

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000879

Gnomad OTH exome

AF:

0.000977

GnomAD4 exome

AF:

0.000393

AC:

574

AN:

1461872

Hom.:

Cov.:

AF XY:

0.000353

AC XY:

257

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00896

Gnomad4 AMR exome

AF:

0.00134

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000812

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000101

Gnomad4 OTH exome

AF:

0.00134

GnomAD4 genome

AF:

0.00269

AC:

410

AN:

152344

Hom.:

Cov.:

AF XY:

0.00271

AC XY:

202

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00899

Gnomad4 AMR

AF:

0.00157

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.00172

Hom.:

Bravo

AF:

0.00309

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000824

AC:

100

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 24, 2018	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2023	SYNJ1: BP4, BS2 -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 18, 2021	This variant is associated with the following publications: (PMID: 32557143) -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 31, 2022

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. -

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

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 24, 2024

- -

SYNJ1-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 22, 2020

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.60

CADD

Benign

5.8

DANN

Benign

0.75

DEOGEN2

Benign

0.30

.;T

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.94

FATHMM_MKL

Benign

0.098

LIST_S2

Benign

0.73

T;T

M_CAP

Benign

0.0032

MetaRNN

Benign

0.0065

T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.4

.;N

REVEL

Benign

0.027

Sift

Benign

1.0

.;T

Sift4G

Benign

0.53

T;T

Vest4

0.14

MVP

0.16

MPC

0.12

ClinPred

0.0020

GERP RS

1.5

gMVP

0.19

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