8-99111240-A-G

Variant names:

• chr8-99111240-A-G
• rs778049327
• NM_017890.5:c.723A>G

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_Strong BP6_Very_Strong BP7

The NM_017890.5(VPS13B):​c.723A>G​(p.Thr241Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000387 in 1,603,158 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. T241T) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000040 (0 hom.)
• Consequence: VPS13B NM_017890.5 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -1.49
• Publications: 0 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: Benign. The variant received -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.61).
• BP6: Variant 8-99111240-A-G is Benign according to our data. Variant chr8-99111240-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 588975.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.49 with no splicing effect.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VPS13B	NM_017890.5	MANE Plus Clinical	c.723A>G	p.Thr241Thr	synonymous	Exon 6 of 62	NP_060360.3
	VPS13B	NM_152564.5	MANE Select	c.723A>G	p.Thr241Thr	synonymous	Exon 6 of 62	NP_689777.3
	VPS13B	NM_015243.3		c.723A>G	p.Thr241Thr	synonymous	Exon 6 of 18	NP_056058.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VPS13B	ENST00000358544.7	TSL:1 MANE Plus Clinical	c.723A>G	p.Thr241Thr	synonymous	Exon 6 of 62	ENSP00000351346.2
	VPS13B	ENST00000357162.7	TSL:1 MANE Select	c.723A>G	p.Thr241Thr	synonymous	Exon 6 of 62	ENSP00000349685.2
	VPS13B	ENST00000441350.2	TSL:1	c.723A>G	p.Thr241Thr	synonymous	Exon 6 of 8	ENSP00000398472.2

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152040 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

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

GnomAD2 exomes AF: 0.000216 AC: 53 AN: 244936 AF XY: 0.000197

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00156

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000895

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000400 AC: 58 AN: 1451118 Hom.: 0 Cov.: 31 AF XY: 0.0000388 AC XY: 28 AN XY: 721382

African (AFR) AF: 0.00 AC: 0 AN: 33178

American (AMR) AF: 0.00131 AC: 57 AN: 43620

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25896

East Asian (EAS) AF: 0.00 AC: 0 AN: 39258

South Asian (SAS) AF: 0.00 AC: 0 AN: 83364

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53136

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4810

European-Non Finnish (NFE) AF: 9.03e-7 AC: 1 AN: 1108000

Other (OTH) AF: 0.00 AC: 0 AN: 59856

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152040 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74246

African (AFR) AF: 0.00 AC: 0 AN: 41444

American (AMR) AF: 0.000262 AC: 4 AN: 15262

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10584

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67938

Other (OTH) AF: 0.00 AC: 0 AN: 2086

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000869

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Cohen syndrome (1)
-	-	1	Inborn genetic diseases (1)
-	-	1	VPS13B-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.61
CADD	Benign	2.1
DANN	Benign	0.71
PhyloP100		-1.5

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: rs778049327; hg19: chr8-100123468;