chr14-61996251-C-G

Position:

• chr14-61996251-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001367656.1(SYT16):​c.232C>G​(p.Gln78Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,344 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SYT16 NM_001367656.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0770

Genes affected

SYT16 (HGNC:23142): (synaptotagmin 16) Predicted to enable identical protein binding activity and phospholipid binding activity. Predicted to be involved in exocytosis. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.050133318).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYT16	NM_001367656.1	c.232C>G	p.Gln78Glu	missense_variant	3/8	ENST00000683842.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYT16	ENST00000683842.1	c.232C>G	p.Gln78Glu	missense_variant	3/8		NM_001367656.1	P1
SYT16	ENST00000568344.5	c.232C>G	p.Gln78Glu	missense_variant	1/6	1		P1
SYT16	ENST00000636133.1	c.193+25940C>G		intron_variant		5
SYT16	ENST00000555409.1	c.232C>G	p.Gln78Glu	missense_variant, NMD_transcript_variant	1/7	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461344 Hom.: 0 Cov.: 58 AF XY: 0.00 AC XY: 0 AN XY: 726944

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Jun 01, 2023

The c.232C>G (p.Q78E) alteration is located in exon 1 (coding exon 1) of the SYT16 gene. This alteration results from a C to G substitution at nucleotide position 232, causing the glutamine (Q) at amino acid position 78 to be replaced by a glutamic acid (E). 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	Benign	0.063
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	11
DANN	Benign	0.95
DEOGEN2	Benign	0.015	T
Eigen	Benign	-0.55
Eigen_PC	Benign	-0.46
FATHMM_MKL	Benign	0.096	N
LIST_S2	Benign	0.57	T
M_CAP	Benign	0.0024	T
MetaRNN	Benign	0.050	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.1	M
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.20	T
Sift4G	Benign	0.64	T
Polyphen		0.0010	B
Vest4		0.13
MutPred		0.13		Gain of relative solvent accessibility (P = 0.0999);
MVP		0.29
ClinPred		0.052	T
GERP RS		2.3
Varity_R		0.079
gMVP		0.080

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: chr14-62462969;