Genetic Variant SYNJ2:p.Arg26Gly (chr6-157982037-C-G) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_003898.4(SYNJ2):c.76C>G(p.Arg26Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000412 in 1,333,674 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

SYNJ2
NM_003898.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.79

Variant links:

Genes affected

SYNJ2 (HGNC:11504): (synaptojanin 2) The gene is a member of the inositol-polyphosphate 5-phosphatase family. The encoded protein interacts with the ras-related C3 botulinum toxin substrate 1, which causes translocation of the encoded protein to the plasma membrane where it inhibits clathrin-mediated endocytosis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2010]

SYNJ2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.799

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYNJ2	NM_003898.4 link	c.76C>G	p.Arg26Gly	missense_variant	Exon 1 of 27	ENST00000355585.9	NP_003889.1	O15056-1B4DG94

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SYNJ2	ENST00000355585.9 link	c.76C>G	p.Arg26Gly	missense_variant	Exon 1 of 27	1	NM_003898.4	ENSP00000347792.4	O15056-1
SYNJ2	ENST00000640338.1 link	c.76C>G	p.Arg26Gly	missense_variant	Exon 1 of 27	1		ENSP00000492532.1	O15056-3
SYNJ2	ENST00000367113.5 link	c.-3C>G		upstream_gene_variant		2		ENSP00000356080.4	H7BY56

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

151918

Hom.:

Cov.:

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:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000440

AC:

AN:

1181756

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

573892

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000532

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

151918

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74232

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000442

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000109

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.76C>G (p.R26G) alteration is located in exon 1 (coding exon 1) of the SYNJ2 gene. This alteration results from a C to G substitution at nucleotide position 76, causing the arginine (R) at amino acid position 26 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.68

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.030

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.78

D;.

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.36

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.82

T;T

M_CAP

Pathogenic

0.99

MetaRNN

Pathogenic

0.80

D;D

MetaSVM

Pathogenic

0.87

MutationAssessor

Uncertain

2.0

M;M

PrimateAI

Pathogenic

0.94

PROVEAN

Pathogenic

-5.0

D;.

REVEL

Pathogenic

0.69

Sift

Uncertain

0.0020

D;.

Sift4G

Uncertain

0.0050

D;.

Polyphen

0.99

D;D

Vest4

0.58

MutPred

0.45

Loss of stability (P = 0.0125);Loss of stability (P = 0.0125);

MVP

0.90

MPC

0.82

ClinPred

0.97

GERP RS

3.0

Varity_R

0.61

gMVP

0.61

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