rs1678573189

Variant names:

• chr1-114137736-C-A
• rs1678573189
• NM_001253772.2:c.830G>T

Your query was ambiguous. Multiple possible variants found:

• chr1-114137736-C-A
• chr1-114137736-C-G
• chr1-114137736-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001253772.2(SYT6):​c.830G>T​(p.Arg277Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,613,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R277H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SYT6 NM_001253772.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.90
• Publications: 0 publications found

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

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.781

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001253772.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SYT6	NM_001253772.2	MANE Select	c.830G>T	p.Arg277Leu	missense	Exon 3 of 8	NP_001240701.1	Q5T7P8-1
	SYT6	NM_001366224.1		c.830G>T	p.Arg277Leu	missense	Exon 3 of 7	NP_001353153.1	A0A7I2PMW4
	SYT6	NM_001366225.1		c.830G>T	p.Arg277Leu	missense	Exon 3 of 8	NP_001353154.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SYT6	ENST00000610222.3	TSL:5 MANE Select	c.830G>T	p.Arg277Leu	missense	Exon 3 of 8	ENSP00000476396.1	Q5T7P8-1
	SYT6	ENST00000369547.6	TSL:1	c.830G>T	p.Arg277Leu	missense	Exon 3 of 7	ENSP00000358560.2	A0A7I2PMW4
	SYT6	ENST00000610096.1	TSL:1	n.*531G>T		non_coding_transcript_exon	Exon 3 of 8	ENSP00000477325.1	V9GYB1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152100 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000241

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

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461890 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727244

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152100 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74292

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000241 AC: 1 AN: 41410

American (AMR) AF: 0.00 AC: 0 AN: 15264

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2094

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Uncertain	0.080	D
BayesDel_noAF	Benign	-0.12
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.30	T
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Benign	0.077	D
MetaRNN	Pathogenic	0.78	D
MetaSVM	Benign	-1.2	T
MutationAssessor	Benign	1.6	L
PhyloP100		7.9
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-6.4	D
REVEL	Uncertain	0.39
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0040	D
Polyphen		0.98	D
Vest4		0.88
MutPred		0.46		Loss of MoRF binding (P = 0.024)
MVP		0.43
MPC		0.62
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.72
gMVP		0.56
Mutation Taster		=12/88	disease causing

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

Other links and lift over

dbSNP: rs1678573189; hg19: chr1-114680358;