chr15-90999015-C-T

Variant names:

• chr15-90999015-C-T
• rs768648295
• NM_018668.5:c.1814G>A

Variant summary

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

The NM_018668.5(VPS33B):​c.1814G>A​(p.Ser605Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S605S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: VPS33B NM_018668.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.50
• Publications: 1 publications found

Genes affected

VPS33B (HGNC:12712): (VPS33B late endosome and lysosome associated) Vesicle mediated protein sorting plays an important role in segregation of intracellular molecules into distinct organelles. Genetic studies in yeast have identified more than 40 vacuolar protein sorting (VPS) genes involved in vesicle transport to vacuoles. This gene is a member of the Sec-1 domain family, and encodes the human ortholog of rat Vps33b which is homologous to the yeast class C Vps33 protein. The mammalian class C vacuolar protein sorting proteins are predominantly associated with late endosomes/lysosomes, and like their yeast counterparts, may mediate vesicle trafficking steps in the endosome/lysosome pathway. Mutations in this gene are associated with arthrogryposis-renal dysfunction-cholestasis syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

ENSG00000284946 (HGNC:):

VPS33B-DT (HGNC:51413): (VPS33B divergent transcript)

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, 0.833

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018668.5. 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
	VPS33B	NM_018668.5	MANE Select	c.1814G>A	p.Ser605Asn	missense	Exon 23 of 23	NP_061138.3
	VPS33B	NM_001289148.1		c.1733G>A	p.Ser578Asn	missense	Exon 22 of 22	NP_001276077.1	B7Z1N4
	VPS33B	NM_001289149.1		c.1541G>A	p.Ser514Asn	missense	Exon 22 of 22	NP_001276078.1	Q9H267-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VPS33B	ENST00000333371.8	TSL:1 MANE Select	c.1814G>A	p.Ser605Asn	missense	Exon 23 of 23	ENSP00000327650.4	Q9H267-1
	ENSG00000284946	ENST00000643536.1		n.1774+662G>A		intron	N/A	ENSP00000494429.1	A0A2R8YDQ0
	VPS33B	ENST00000853125.1		c.1829G>A	p.Ser610Asn	missense	Exon 23 of 23	ENSP00000523184.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000796 AC: 2 AN: 251394 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461882 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727240

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: 86252

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: 1112006

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.61
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.21
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.37	T
Eigen	Uncertain	0.39
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.044	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Uncertain	-0.15	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		6.5
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-0.25	N
REVEL	Uncertain	0.44
Sift	Benign	0.079	T
Sift4G	Benign	0.074	T
Polyphen		0.64	P
Vest4		0.48
MutPred		0.91		Loss of disorder (P = 0.126)
MVP		0.74
MPC		0.58
ClinPred		0.59	D
GERP RS		5.8
Varity_R		0.21
gMVP		0.84
Mutation Taster		=78/22	polymorphism

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: rs768648295; hg19: chr15-91542245;