Variant chr11-1835967-G-A 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.340G>A(p.Asp114Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000551 in 1,453,006 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: not found (cov: 34)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

SYT8
NM_001394072.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.307

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=0.22120127).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SYT8	NM_001394072.1 linkuse as main transcript	c.340G>A	p.Asp114Asn	missense_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.340G>A	p.Asp114Asn	missense_variant	3/8	5	NM_001394072.1	ENSP00000343691.3		A6NCR4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000415

AC:

AN:

240726

Hom.:

AF XY:

0.00000764

AC XY:

AN XY:

130944

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000319

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000551

AC:

AN:

1453006

Hom.:

Cov.:

AF XY:

0.00000830

AC XY:

AN XY:

723066

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000239

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000451

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

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

Feb 03, 2022

The c.382G>A (p.D128N) alteration is located in exon 4 (coding exon 4) of the SYT8 gene. This alteration results from a G to A substitution at nucleotide position 382, causing the aspartic acid (D) at amino acid position 128 to be replaced by an asparagine (N). 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

-0.25

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.088

T;.

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.061

LIST_S2

Benign

0.73

T;T

M_CAP

Benign

0.0058

MetaRNN

Benign

0.22

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.4

L;.

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-3.4

D;D

REVEL

Benign

0.043

Sift

Benign

0.19

T;T

Sift4G

Benign

0.30

T;T

Polyphen

0.68

P;P

Vest4

0.18

MutPred

0.48

Loss of sheet (P = 0.0817);.;

MVP

0.36

MPC

0.076

ClinPred

0.64

GERP RS

1.0

Varity_R

0.18

gMVP

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

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