chr9-35295771-C-A

Variant names:

• chr9-35295771-C-A
• rs770578466
• NM_001371189.2:c.602C>A

Variant summary

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

The NM_001371189.2(UNC13B):​c.602C>A​(p.Pro201His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. P201L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: UNC13B NM_001371189.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.91
• Publications: 0 publications found

Genes affected

UNC13B (HGNC:12566): (unc-13 homolog B) This gene is expressed in the kidney cortical epithelial cells and is upregulated by hyperglycemia. The encoded protein shares a high level of similarity to the rat homolog, and contains 3 C2 domains and a diacylglycerol-binding C1 domain. Hyperglycemia increases the levels of diacylglycerol, which has been shown to induce apoptosis in cells transfected with this gene and thus contribute to the renal cell complications of hyperglycemia. Studies in other species also indicate a role for this protein in the priming step of synaptic vesicle exocytosis. [provided by RefSeq, Jul 2008]

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_001371189.2. 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
	UNC13B	NM_001371189.2	MANE Select	c.602C>A	p.Pro201His	missense	Exon 8 of 40	NP_001358118.1	A0A1B0GUS7
	UNC13B	NM_001330653.3		c.602C>A	p.Pro201His	missense	Exon 8 of 40	NP_001317582.1	O14795-2
	UNC13B	NM_001387551.1		c.638C>A	p.Pro213His	missense	Exon 9 of 40	NP_001374480.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UNC13B	ENST00000635942.2	TSL:5 MANE Select	c.602C>A	p.Pro201His	missense	Exon 8 of 40	ENSP00000490228.1	A0A1B0GUS7
	UNC13B	ENST00000619578.4	TSL:1	c.602C>A	p.Pro201His	missense	Exon 8 of 40	ENSP00000479261.1	O14795-2
	UNC13B	ENST00000378495.7	TSL:1	c.602C>A	p.Pro201His	missense	Exon 8 of 39	ENSP00000367756.3	O14795-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461892 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727248

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: 26136

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

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

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: 8.99e-7 AC: 1 AN: 1112012

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

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.089	T
Eigen	Pathogenic	0.85
Eigen_PC	Pathogenic	0.85
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.062	D
MetaRNN	Uncertain	0.60	D
MetaSVM	Pathogenic	0.90	D
MutationAssessor	Uncertain	2.5	M
PhyloP100		7.9
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-2.9	D
REVEL	Uncertain	0.38
Sift	Uncertain	0.0010	D
Sift4G	Benign	0.074	T
Polyphen		1.0	D
Vest4		0.74
MutPred		0.17		Loss of glycosylation at P201 (P = 0.0102)
MVP		0.89
MPC		0.85
ClinPred		0.98	D
GERP RS		5.8
Varity_R		0.24
gMVP		0.42
Mutation Taster		=9/91	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: rs770578466; hg19: chr9-35295768;