15-54013210-C-T

Variant names:

• chr15-54013210-C-T
• rs1354196839
• NM_001080534.3:c.307C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001080534.3(UNC13C):​c.307C>T​(p.Gln103*) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000137 in 1,461,500 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. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: UNC13C NM_001080534.3 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.74
• Publications: 0 publications found

Genes affected

UNC13C (HGNC:23149): (unc-13 homolog C) Predicted to enable calmodulin binding activity and syntaxin-1 binding activity. Predicted to be involved in several processes, including glutamatergic synaptic transmission; regulated exocytosis; and synaptic vesicle maturation. Predicted to be located in presynaptic active zone. Predicted to be active in several cellular components, including axon terminus; parallel fiber to Purkinje cell synapse; and presynaptic active zone cytoplasmic component. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001080534.3. 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
	UNC13C	NM_001080534.3	MANE Select	c.307C>T	p.Gln103*	stop_gained	Exon 2 of 33	NP_001074003.1	Q8NB66
	UNC13C	NM_001329919.2		c.307C>T	p.Gln103*	stop_gained	Exon 2 of 32	NP_001316848.1	A0A3B3ISZ1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UNC13C	ENST00000260323.16	TSL:5 MANE Select	c.307C>T	p.Gln103*	stop_gained	Exon 2 of 33	ENSP00000260323.11	Q8NB66
	UNC13C	ENST00000647821.1		c.307C>T	p.Gln103*	stop_gained	Exon 2 of 32	ENSP00000497525.1	A0A3B3ISZ1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461500 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727014

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44616

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

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

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111814

Other (OTH) AF: 0.00 AC: 0 AN: 60370

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.59
CADD	Pathogenic	33
DANN	Uncertain	1.0
Eigen	Uncertain	0.49
Eigen_PC	Benign	0.18
FATHMM_MKL	Benign	0.68	D
PhyloP100		3.7
Vest4		0.15
GERP RS		4.2

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: rs1354196839; hg19: chr15-54305407;