rs7132962

Positions:

• chr12-79246956-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_005639.3(SYT1):​c.166+29271T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0367 in 152,232 control chromosomes in the GnomAD database, including 204 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.037 (204 hom., cov: 32)
• Consequence: SYT1 NM_005639.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.233

Genes affected

SYT1 (HGNC:11509): (synaptotagmin 1) This gene encodes a member of the synaptotagmin protein family. The synaptotagmins are integral membrane proteins of synaptic vesicles that serve as calcium sensors in the process of vesicular trafficking and exocytosis. The encoded protein participates in triggering neurotransmitter release at the synapse in response to calcium binding. Mutations in this gene are associated with Baker-Gordon syndrome. [provided by RefSeq, Jan 2023]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.122 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SYT1	NM_005639.3	c.166+29271T>C		intron_variant		ENST00000261205.9	NP_005630.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SYT1	ENST00000261205.9	c.166+29271T>C		intron_variant		1	NM_005639.3	ENSP00000261205	P3

Frequencies

GnomAD3 genomes AF: 0.0367 AC: 5582 AN: 152114 Hom.: 202 Cov.: 32

Gnomad AFR AF: 0.0804

Gnomad AMI AF: 0.00768

Gnomad AMR AF: 0.0331

Gnomad ASJ AF: 0.0182

Gnomad EAS AF: 0.130

Gnomad SAS AF: 0.0441

Gnomad FIN AF: 0.0192

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.00782

Gnomad OTH AF: 0.0267

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0367 AC: 5594 AN: 152232 Hom.: 204 Cov.: 32 AF XY: 0.0372 AC XY: 2772 AN XY: 74430

Gnomad4 AFR AF: 0.0803

Gnomad4 AMR AF: 0.0332

Gnomad4 ASJ AF: 0.0182

Gnomad4 EAS AF: 0.130

Gnomad4 SAS AF: 0.0442

Gnomad4 FIN AF: 0.0192

Gnomad4 NFE AF: 0.00782

Gnomad4 OTH AF: 0.0269

Alfa AF: 0.0177 Hom.: 15

Bravo AF: 0.0396

Asia WGS AF: 0.0850 AC: 295 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	1.3
DANN	Benign	0.64

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

LitVar

Other links and lift over

dbSNP: rs7132962; hg19: chr12-79640736;