Genetic Variant SYTL2:p.Gln2017His (chr11-85704996-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_206927.4(SYTL2):c.6051G>C(p.Gln2017His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000806 in 1,612,708 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000084 ( 0 hom. )

Consequence

SYTL2
NM_206927.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.985

Variant links:

Genes affected

SYTL2 (HGNC:15585): (synaptotagmin like 2) The protein encoded by this gene is a synaptotagmin-like protein (SLP) that belongs to a C2 domain-containing protein family. The SLP homology domain (SHD) of this protein has been shown to specifically bind the GTP-bound form of Ras-related protein Rab-27A (RAB27A). This protein plays a role in RAB27A-dependent vesicle trafficking and controls melanosome distribution in the cell periphery. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Jun 2009]

SYTL2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYTL2	NM_206927.4 link	c.6051G>C	p.Gln2017His	missense_variant	Exon 16 of 20	ENST00000359152.10	NP_996810.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SYTL2	ENST00000359152.10 link	c.6051G>C	p.Gln2017His	missense_variant	Exon 16 of 20	1	NM_206927.4	ENSP00000352065.7		A0A8J9FM55

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152130

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:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000319

AC:

AN:

250784

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135552

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000705

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000835

AC:

122

AN:

1460578

Hom.:

Cov.:

AF XY:

0.0000771

AC XY:

AN XY:

726576

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:

0.0000981

Gnomad4 OTH exome

AF:

0.000215

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152130

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74310

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:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.000219

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3150G>C (p.Q1050H) alteration is located in exon 9 (coding exon 9) of the SYTL2 gene. This alteration results from a G to C substitution at nucleotide position 3150, causing the glutamine (Q) at amino acid position 1050 to be replaced by a histidine (H). 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

0.61

BayesDel_addAF

Benign

-0.077

BayesDel_noAF

Benign

-0.16

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

.;.;.;.;.;.;.;T;T;.;.;.;.;.;.;.

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.89

D;D;D;.;.;D;D;D;D;D;D;D;.;D;D;D

M_CAP

Benign

0.034

MetaRNN

Uncertain

0.52

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.3

.;.;.;.;.;.;.;.;L;.;.;.;.;.;.;.

PrimateAI

Uncertain

0.51

PROVEAN

Pathogenic

-4.5

.;D;.;D;D;D;D;.;D;D;D;.;D;D;D;D

REVEL

Benign

0.21

Sift

Uncertain

0.0020

.;D;.;D;D;D;D;.;D;D;D;.;D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;.

Polyphen

1.0

D;D;.;D;.;.;D;.;D;D;D;.;D;.;.;.

Vest4

0.58

MutPred

0.52

.;.;.;.;.;.;.;.;Loss of catalytic residue at Q712 (P = 0.0205);.;.;.;.;.;.;.;

MVP

0.39

MPC

0.093

ClinPred

0.80

GERP RS

3.2

Varity_R

0.62

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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