15-91226533-G-A

Variant names:

• chr15-91226533-G-A
• rs1365105341
• NM_001323032.3:c.270G>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001323032.3(SV2B):​c.270G>A​(p.Gln90Gln) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 32)
• Consequence: SV2B NM_001323032.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.26
• Publications: 0 publications found

Genes affected

SV2B (HGNC:16874): (synaptic vesicle glycoprotein 2B) This gene encodes a member of the synaptic vesicle proteins 2 (SV2) family and major facilitator superfamily of proteins. This protein and other members of the family are localized to synaptic vesicles and may function in the regulation of vesicle trafficking and exocytosis. Studies in mice suggest that the encoded protein may act as a protein receptor for botulinum neurotoxin E in neurons, and that this protein may be important for the integrity of the glomerular filtration barrier. This gene shows reduced expression in areas of synaptic loss in the hippocampus of human temporal lobe epilepsy patients. [provided by RefSeq, Sep 2016]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.59).
• BP7: Synonymous conserved (PhyloP=2.26 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001323032.3. 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
	SV2B	NM_001323032.3	MANE Select	c.270G>A	p.Gln90Gln	synonymous	Exon 2 of 13	NP_001309961.1	Q7L1I2-1
	SV2B	NM_001323031.2		c.270G>A	p.Gln90Gln	synonymous	Exon 2 of 13	NP_001309960.1	Q7L1I2-1
	SV2B	NM_001323037.3		c.270G>A	p.Gln90Gln	synonymous	Exon 3 of 14	NP_001309966.1	Q7L1I2-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SV2B	ENST00000394232.6	TSL:5 MANE Select	c.270G>A	p.Gln90Gln	synonymous	Exon 2 of 13	ENSP00000377779.1	Q7L1I2-1
	SV2B	ENST00000330276.4	TSL:1	c.270G>A	p.Gln90Gln	synonymous	Exon 1 of 12	ENSP00000332818.4	Q7L1I2-1
	SV2B	ENST00000557410.5	TSL:1	n.270G>A		non_coding_transcript_exon	Exon 3 of 15	ENSP00000450992.1	Q7L1I2-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.59
CADD	Benign	6.2
DANN	Benign	0.63
PhyloP100		2.3

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: rs1365105341; hg19: chr15-91769763;