16-69322595-G-A

Position:

• chr16-69322595-G-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_013245.3(VPS4A):​c.1107G>A​(p.Met369Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,594 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: VPS4A NM_013245.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0770

Genes affected

VPS4A (HGNC:13488): (vacuolar protein sorting 4 homolog A) The protein encoded by this gene is a member of the AAA protein family (ATPases associated with diverse cellular activities), and is the homolog of the yeast Vps4 protein. In humans, two paralogs of the yeast protein have been identified. The former share a high degree of aa sequence similarity with each other, and also with yeast Vps4 and mouse Skd1 proteins. The mouse Skd1 (suppressor of K+ transport defect 1) has been shown to be really an yeast Vps4 ortholog. Functional studies indicate that both human paralogs associate with the endosomal compartments, and are involved in intracellular protein trafficking, similar to Vps4 protein in yeast. The gene encoding this paralog has been mapped to chromosome 16; the gene for the other resides on chromosome 18. [provided by RefSeq, Jul 2008]

COG8 (HGNC:18623): (component of oligomeric golgi complex 8) This gene encodes a protein that is a component of the conserved oligomeric Golgi (COG) complex, a multiprotein complex that plays a structural role in the Golgi apparatus, and is involved in intracellular membrane trafficking and glycoprotein modification. Mutations in this gene cause congenital disorder of glycosylation, type IIh, a disease that is characterized by under-glycosylated serum proteins, and whose symptoms include severe psychomotor retardation, failure to thrive, seizures, and dairy and wheat product intolerance. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.07060605).
• BS2: High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VPS4A	NM_013245.3	c.1107G>A	p.Met369Ile	missense_variant	10/11	ENST00000254950.13	NP_037377.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VPS4A	ENST00000254950.13	c.1107G>A	p.Met369Ile	missense_variant	10/11	1	NM_013245.3	ENSP00000254950	P1
VPS4A	ENST00000566354.1	n.1385G>A		non_coding_transcript_exon_variant	1/2	1
COG8	ENST00000562595.5	c.*988C>T		3_prime_UTR_variant	4/4	5		ENSP00000456705
COG8	ENST00000564419.1	n.30-1549C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1461594 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 727078

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000994

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000624 Hom.: 0

Bravo AF: 0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

New York Genome Center

Aug 26, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.013	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	15
DANN	Benign	0.54
DEOGEN2	Benign	0.078	.;T
Eigen	Benign	-0.93
Eigen_PC	Benign	-0.69
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.84	T;T
M_CAP	Uncertain	0.15	D
MetaRNN	Benign	0.071	T;T
MetaSVM	Benign	-0.55	T
MutationAssessor	Benign	-1.3	.;N
MutationTaster	Benign	0.99	D
PrimateAI	Benign	0.45	T
PROVEAN	Benign	0.24	.;N
REVEL	Uncertain	0.32
Sift	Benign	0.76	.;T
Sift4G	Benign	0.63	T;T
Polyphen		0.0	.;B
Vest4		0.22
MutPred		0.28		.;Loss of disorder (P = 0.0359);
MVP		0.39
MPC		0.95
ClinPred		0.037	T
GERP RS		3.5
Varity_R		0.074
gMVP		0.40

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.16		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: rs1965527680; hg19: chr16-69356498;