Genetic Variant SYT8:p.Arg79Cys (chr11-1835436-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001394072.1(SYT8):c.235C>T(p.Arg79Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000348 in 1,609,368 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000034 ( 1 hom. )

Consequence

SYT8
NM_001394072.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.479

Publications

1 publications found

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09199479).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001394072.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SYT8	NM_001394072.1	MANE Select	c.235C>T	p.Arg79Cys	missense	Exon 2 of 8	NP_001381001.1	Q8NBV8-4
SYT8	NM_001290332.2		c.280C>T	p.Arg94Cys	missense	Exon 3 of 9	NP_001277261.2
SYT8	NM_001290333.2		c.277C>T	p.Arg93Cys	missense	Exon 3 of 9	NP_001277262.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SYT8	ENST00000341958.4	TSL:5 MANE Select	c.235C>T	p.Arg79Cys	missense	Exon 2 of 8	ENSP00000343691.3	Q8NBV8-4
SYT8	ENST00000381978.7	TSL:1	c.271C>T	p.Arg91Cys	missense	Exon 3 of 9	ENSP00000371406.3	H0Y3G9
SYT8	ENST00000482118.1	TSL:1	n.235C>T		non_coding_transcript_exon	Exon 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

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

GnomAD2 exomes

AF:

0.0000414

AC:

AN:

241310

AF XY:

0.0000605

show subpopulations

Gnomad AFR exome

AF:

0.000130

Gnomad AMR exome

AF:

0.0000584

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000919

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000343

AC:

AN:

1457186

Hom.:

Cov.:

AF XY:

0.0000400

AC XY:

AN XY:

725022

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33460

American (AMR)

AF:

0.0000672

AC:

AN:

44628

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39650

South Asian (SAS)

AF:

0.000151

AC:

AN:

86118

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49666

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000252

AC:

AN:

1111518

Other (OTH)

AF:

0.0000166

AC:

AN:

60280

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74334

show subpopulations

African (AFR)

AF:

0.000145

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.533

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000660

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.0000413

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000594

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.41

CADD

Benign

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.058

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.97

FATHMM_MKL

Benign

0.041

LIST_S2

Benign

0.47

M_CAP

Benign

0.025

MetaRNN

Benign

0.092

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

PhyloP100

-0.48

PrimateAI

Benign

0.25

PROVEAN

Uncertain

-4.1

REVEL

Benign

0.059

Sift

Benign

0.079

Sift4G

Uncertain

0.021

Polyphen

0.0030

Vest4

0.19

MVP

0.35

MPC

0.10

ClinPred

0.029

GERP RS

1.4

PromoterAI

0.020

Neutral

(source)

Varity_R

0.059

gMVP

0.25

Mutation Taster

=92/8

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over