chr8-99642091-C-G

Position:

• chr8-99642091-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_017890.5(VPS13B):​c.5576C>G​(p.Ser1859Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,134 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: VPS13B NM_017890.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.212

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29811543).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VPS13B	NM_017890.5	c.5576C>G	p.Ser1859Trp	missense_variant	34/62	ENST00000358544.7	NP_060360.3
VPS13B	NM_152564.5	c.5501C>G	p.Ser1834Trp	missense_variant	34/62	ENST00000357162.7	NP_689777.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VPS13B	ENST00000358544.7	c.5576C>G	p.Ser1859Trp	missense_variant	34/62	1	NM_017890.5	ENSP00000351346
VPS13B	ENST00000357162.7	c.5501C>G	p.Ser1834Trp	missense_variant	34/62	1	NM_152564.5	ENSP00000349685	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152134 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152134 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74306

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.057	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	17
DANN	Benign	0.94
DEOGEN2	Benign	0.11	.;T
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.50
FATHMM_MKL	Benign	0.29	N
LIST_S2	Uncertain	0.90	D;D
M_CAP	Benign	0.046	D
MetaRNN	Benign	0.30	T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.0	.;L
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-1.9	N;N
REVEL	Benign	0.14
Sift	Benign	0.095	T;T
Sift4G	Benign	0.13	T;T
Polyphen		0.97	D;P
Vest4		0.54
MutPred		0.28		.;Loss of disorder (P = 0.0014);
MVP		0.62
MPC		0.52
ClinPred		0.35	T
GERP RS		0.15
Varity_R		0.042
gMVP		0.29

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

Publications

LitVar

Other links and lift over

dbSNP: rs144257406; hg19: chr8-100654319;