VPS33B p.Thr464Thr

Variant names:

• chr15-91002062-C-C
• NM_018668.5:c.

Your query was ambiguous. Multiple possible variants found:

• chr15-91002063--
• chr15-91002063-G-A
• chr15-91002063-G-T
• chr15-91002063-G-C

Variant summary

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

The NM_018668.5(VPS33B):​c. variant causes a exon region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: VPS33B NM_018668.5 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.92
• Publications: 0 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 2 ACMG points.

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

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.		exon_region	Exon 18 of 23	NP_061138.3
	VPS33B	NM_001289148.1		c.		exon_region	Exon 17 of 22	NP_001276077.1	B7Z1N4
	VPS33B	NM_001289149.1		c.		exon_region	Exon 17 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.		exon_region	Exon 18 of 23	ENSP00000327650.4	Q9H267-1
	ENSG00000284946	ENST00000643536.1		n.		exon_region	Exon 18 of 35	ENSP00000494429.1	A0A2R8YDQ0
	VPS33B	ENST00000853125.1		c.		exon_region	Exon 18 of 23	ENSP00000523184.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-2.9

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr15-91545292;