1-114138045-G-T

Position:

• chr1-114138045-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001253772.2(SYT6):​c.521C>A​(p.Ser174Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: SYT6 NM_001253772.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 10.0

Genes affected

SYT6 (HGNC:18638): (synaptotagmin 6) The protein encoded by this gene belongs to the synaptotagmin family. Synaptotagmins share a common domain structure that includes a transmembrane domain and a cytoplasmic region composed of 2 C2 domains, and are involved in calcium-dependent exocytosis of synaptic vesicles. This protein has been shown to be a key component of the secretory machinery involved in acrosomal exocytosis. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.754

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYT6	NM_001253772.2	c.521C>A	p.Ser174Tyr	missense_variant	3/8	ENST00000610222.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYT6	ENST00000610222.3	c.521C>A	p.Ser174Tyr	missense_variant	3/8	5	NM_001253772.2	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 09, 2024

The c.266C>A (p.S89Y) alteration is located in exon 3 (coding exon 2) of the SYT6 gene. This alteration results from a C to A substitution at nucleotide position 266, causing the serine (S) at amino acid position 89 to be replaced by a tyrosine (Y). 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	0.83
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Benign	0.26	.;.;.;T;.;.
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	.;.;D;D;D;D
M_CAP	Benign	0.065	D
MetaRNN	Pathogenic	0.75	D;D;D;D;D;D
MetaSVM	Benign	-0.35	T
MutationAssessor	Uncertain	2.7	.;.;.;M;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Uncertain	-3.8	.;.;D;.;.;.
REVEL	Uncertain	0.48
Sift	Pathogenic	0.0	.;.;D;.;.;.
Sift4G	Uncertain	0.0020	D;D;D;D;.;D
Polyphen		0.98	.;.;.;D;.;.
Vest4		0.77
MutPred		0.40		.;.;.;Loss of phosphorylation at S174 (P = 0.0759);Loss of phosphorylation at S174 (P = 0.0759);.;
MVP		0.85
MPC		0.58
ClinPred		0.99	D
GERP RS		4.3
Varity_R		0.79
gMVP		0.66

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-114680667;