Variant 11-1835887-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001394072.1(SYT8):c.260T>G(p.Val87Gly) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000249 in 1,611,844 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 35)

Exomes 𝑓: 0.00026 ( 0 hom. )

Consequence

SYT8
NM_001394072.1 missense, splice_region

Scores

Splicing: ADA: 0.01331

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.949

Variant links:

Genes affected

SYT8 (HGNC:19264): (synaptotagmin 8) This gene encodes a member of the synaptotagmin protein family. Synaptotagmins are membrane proteins that are important in neurotransmission and hormone secretion, both of which involve regulated exocytosis. Expression of the encoded protein in human pancreatic islets has been connected to activity of the promoter for the insulin gene, on the same chromosome several hundred kilobases away (PMID: 21336277 and 22928559). This association would link response to gluclose to insulin secretion. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2014]

SYT8 links:

SYT8 (HGNC:):

SYT8 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.23247796).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SYT8	NM_001394072.1 linkuse as main transcript	c.260T>G	p.Val87Gly	missense_variant, splice_region_variant	3/8	ENST00000341958.4	NP_001381001.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SYT8	ENST00000341958.4 linkuse as main transcript	c.260T>G	p.Val87Gly	missense_variant, splice_region_variant	3/8	5	NM_001394072.1	ENSP00000343691.3		A6NCR4

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000309

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000121

AC:

AN:

248790

Hom.:

AF XY:

0.000119

AC XY:

AN XY:

135014

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000584

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000657

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000232

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000258

AC:

377

AN:

1459640

Hom.:

Cov.:

AF XY:

0.000240

AC XY:

174

AN XY:

726198

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000450

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000324

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000158

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000309

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000140

Hom.:

Bravo

AF:

0.000174

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 19, 2023

The c.302T>G (p.V101G) alteration is located in exon 4 (coding exon 4) of the SYT8 gene. This alteration results from a T to G substitution at nucleotide position 302, causing the valine (V) at amino acid position 101 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

Benign

0.24

BayesDel_addAF

Benign

-0.088

BayesDel_noAF

Uncertain

-0.060

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.073

.;.;T;.

Eigen

Benign

0.074

Eigen_PC

Benign

-0.032

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.43

T;T;T;T

M_CAP

Benign

0.070

MetaRNN

Benign

0.23

T;T;T;T

MetaSVM

Benign

-0.65

MutationAssessor

Uncertain

2.2

.;.;M;.

PrimateAI

Uncertain

0.52

PROVEAN

Pathogenic

-6.9

D;D;D;D

REVEL

Benign

0.17

Sift

Pathogenic

0.0

D;D;T;T

Sift4G

Pathogenic

0.0

D;D;D;D

Polyphen

0.99

.;.;D;D

Vest4

0.29, 0.29

MVP

0.53

MPC

0.46

ClinPred

0.36

GERP RS

3.0

Varity_R

0.36

gMVP

0.44

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.013

dbscSNV1_RF

Benign

0.25

SpliceAI score (max)

0.020

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