NM_017890.5:c.9943T>A

Variant names:

• chr8-99835664-T-A
• rs1391149548
• NM_017890.5:c.9943T>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_017890.5(VPS13B):​c.9943T>A​(p.Leu3315Met) variant causes a missense 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. Synonymous variant affecting the same amino acid position (i.e. L3315L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: VPS13B NM_017890.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.261
• Publications: 1 publications found

Genes affected

VPS13B (HGNC:2183): (vacuolar protein sorting 13 homolog B) This gene encodes a potential transmembrane protein that may function in vesicle-mediated transport and sorting of proteins within the cell. This protein may play a role in the development and the function of the eye, hematological system, and central nervous system. Mutations in this gene have been associated with Cohen syndrome. Multiple splice variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

VPS13B Gene-Disease associations (from GenCC):

• Cohen syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Myriad Women’s Health, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp, Laboratory for Molecular Medicine, ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.34835848).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017890.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VPS13B	NM_017890.5	MANE Plus Clinical	c.9943T>A	p.Leu3315Met	missense	Exon 54 of 62	NP_060360.3
	VPS13B	NM_152564.5	MANE Select	c.9868T>A	p.Leu3290Met	missense	Exon 54 of 62	NP_689777.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VPS13B	ENST00000358544.7	TSL:1 MANE Plus Clinical	c.9943T>A	p.Leu3315Met	missense	Exon 54 of 62	ENSP00000351346.2
	VPS13B	ENST00000357162.7	TSL:1 MANE Select	c.9868T>A	p.Leu3290Met	missense	Exon 54 of 62	ENSP00000349685.2
	VPS13B	ENST00000682153.1		n.9943T>A		non_coding_transcript_exon	Exon 54 of 62	ENSP00000507923.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000712 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.019	T
BayesDel_noAF	Benign	-0.27
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.12	T
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.40
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.064	D
MetaRNN	Benign	0.35	T
MetaSVM	Uncertain	-0.28	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		0.26
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-0.48	N
REVEL	Uncertain	0.29
Sift	Benign	0.12	T
Sift4G	Uncertain	0.013	D
Polyphen		1.0	D
Vest4		0.53
MutPred		0.34		Loss of stability (P = 0.0895)
MVP		0.42
MPC		0.38
ClinPred		0.61	D
GERP RS		-1.9
Varity_R		0.079
gMVP		0.48
Mutation Taster		=88/12	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: rs1391149548; hg19: chr8-100847892; COSMIC: COSV62157482;