Genetic Variant SYT5:p.Ala352Ser (chr19-55173591-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_003180.3(SYT5):c.1054G>T(p.Ala352Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000189 in 1,481,424 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

SYT5
NM_003180.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.19

Variant links:

Genes affected

SYT5 (HGNC:11513): (synaptotagmin 5) Synaptotagmins, such as SYT5, are a family of type III membrane proteins characterized by cytoplasmic repeats related to protein kinase C (see MIM 176960) regulatory (C2) domains, which are thought to bind calcium. Synaptotagmins may act both as negative regulators of vesicle fusion, allowing fusion in the presence of calcium, and as calcium receptors or sensor molecules (summary by Hudson and Birnbaum, 1995 [PubMed 7597049]).[supplied by OMIM, Feb 2011]

SYT5 links:

DNAAF3-AS1 (HGNC:55292): (DNAAF3 antisense RNA 1)

DNAAF3-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.026218623).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYT5	NM_003180.3 link	c.1054G>T	p.Ala352Ser	missense_variant	Exon 9 of 9	ENST00000354308.8	NP_003171.2	O00445-1A0A024R4N8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SYT5	ENST00000354308.8 link	c.1054G>T	p.Ala352Ser	missense_variant	Exon 9 of 9	1	NM_003180.3	ENSP00000346265.2		O00445-1

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000290

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000120

AC:

AN:

1329262

Hom.:

Cov.:

AF XY:

0.00000917

AC XY:

AN XY:

654194

show subpopulations

Gnomad4 AFR exome

AF:

0.000490

Gnomad4 AMR exome

AF:

0.0000404

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:

0.00

Gnomad4 OTH exome

AF:

0.0000365

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.000290

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000103

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 14, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1054G>T (p.A352S) alteration is located in exon 9 (coding exon 8) of the SYT5 gene. This alteration results from a G to T substitution at nucleotide position 1054, causing the alanine (A) at amino acid position 352 to be replaced by a serine (S). 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

Benign

0.11

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.14

.;T;T

Eigen

Benign

-0.77

Eigen_PC

Benign

-0.74

FATHMM_MKL

Benign

0.40

LIST_S2

Uncertain

0.94

D;.;D

M_CAP

Benign

0.028

MetaRNN

Benign

0.026

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.43

.;N;N

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.98

.;N;N

REVEL

Benign

0.021

Sift

Benign

0.50

.;T;T

Sift4G

Benign

0.77

T;T;T

Polyphen

0.062

.;B;B

Vest4

0.13

MutPred

0.36

.;Gain of glycosylation at A352 (P = 0.0087);Gain of glycosylation at A352 (P = 0.0087);

MVP

0.50

MPC

0.64

ClinPred

0.028

GERP RS

2.1

Varity_R

0.096

gMVP

0.075

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