16-70687967-G-T

Position:

chr16-70687967-G-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_018052.5(VAC14):c.2310C>A(p.Ser770Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000635 in 1,589,472 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000065 ( 1 hom. )

Consequence

VAC14
NM_018052.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -5.62

Variant links:

Genes affected

VAC14 (HGNC:25507): (VAC14 component of PIKFYVE complex) This gene encodes a scaffold protein that is a component of the PIKfyve protein kinase complex. This complex is responsible for the synthesis of phosphatidylinositol 3,5-bisphosphate, an important component of cellular membranes, from phosphatidylinositol 3-phosphate. Mice lacking a functional copy of this gene exhibit severe neurodegeneration. Mutations in the human gene have been identified in patients with a childhood onset progressive neurological disorder characterized by impaired movement, dystonia, and striatal abnormalities. [provided by RefSeq, May 2017]

VAC14 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.014373511).

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000525 (8/152274) while in subpopulation SAS AF= 0.00165 (8/4836). AF 95% confidence interval is 0.000823. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
VAC14	NM_018052.5 linkuse as main transcript	c.2310C>A	p.Ser770Arg	missense_variant	19/19	ENST00000261776.10	NP_060522.3
VAC14	NM_001351157.2 linkuse as main transcript	c.1608C>A	p.Ser536Arg	missense_variant	18/18		NP_001338086.1
VAC14	XM_005256038.5 linkuse as main transcript	c.*3896C>A		3_prime_UTR_variant	19/19		XP_005256095.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VAC14	ENST00000261776.10 linkuse as main transcript	c.2310C>A	p.Ser770Arg	missense_variant	19/19	1	NM_018052.5	ENSP00000261776	P1	Q08AM6-1

Frequencies

GnomAD3 genomes

AF:

0.0000525

AC:

AN:

152274

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00165

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000148

AC:

AN:

236968

Hom.:

AF XY:

0.000210

AC XY:

AN XY:

128562

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00120

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000176

GnomAD4 exome

AF:

0.0000647

AC:

AN:

1437198

Hom.:

Cov.:

AF XY:

0.0000982

AC XY:

AN XY:

712688

show subpopulations

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:

0.000994

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000182

Gnomad4 OTH exome

AF:

0.000135

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152274

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00165

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ExAC

AF:

0.000124

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 11, 2022

This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 770 of the VAC14 protein (p.Ser770Arg). This variant is present in population databases (rs200092069, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with VAC14-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.49

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.42

CADD

Benign

0.011

DANN

Uncertain

0.97

DEOGEN2

Benign

0.27

T;.

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.087

LIST_S2

Uncertain

0.88

D;D

M_CAP

Benign

0.0072

MetaRNN

Benign

0.014

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

N;.

MutationTaster

Benign

0.91

D;D

PrimateAI

Benign

0.48

PROVEAN

Benign

-0.61

N;N

REVEL

Benign

0.23

Sift

Benign

0.58

T;T

Sift4G

Benign

0.11

T;T

Polyphen

0.0020

B;.

Vest4

0.13

MutPred

0.30

Gain of methylation at S770 (P = 0.0202);.;

MVP

0.22

MPC

0.73

ClinPred

0.057

GERP RS

-3.2

Varity_R

0.084

gMVP

0.26

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over