rs749094914

Variant names:

• chr16-70698729-C-A
• rs749094914
• NM_018052.5:c.1744G>T

Your query was ambiguous. Multiple possible variants found:

• chr16-70698729-C-A
• chr16-70698729-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PM5 PP5

The NM_018052.5(VAC14):​c.1744G>T​(p.Ala582Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A582T) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: VAC14 NM_018052.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.56
• Publications: 2 publications found

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 Gene-Disease associations (from GenCC):

• striatonigral degeneration, childhood-onset

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• hereditary neurological disease

  Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
• Yunis-Varon syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr16-70698729-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 808070.
• PP5: Variant 16-70698729-C-A is Pathogenic according to our data. Variant chr16-70698729-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 253142.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018052.5. 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
	VAC14	NM_018052.5	MANE Select	c.1744G>T	p.Ala582Ser	missense	Exon 15 of 19	NP_060522.3
	VAC14	NM_001351157.2		c.1042G>T	p.Ala348Ser	missense	Exon 14 of 18	NP_001338086.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VAC14	ENST00000261776.10	TSL:1 MANE Select	c.1744G>T	p.Ala582Ser	missense	Exon 15 of 19	ENSP00000261776.5	Q08AM6-1
	VAC14	ENST00000564685.5	TSL:1	n.432G>T		non_coding_transcript_exon	Exon 3 of 4
	VAC14	ENST00000568548.5	TSL:1	n.*1470G>T		non_coding_transcript_exon	Exon 14 of 18	ENSP00000454650.1	H3BN23

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Striatonigral degeneration, childhood-onset (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	-0.060
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.60	D
Eigen	Pathogenic	0.71
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.67	D
MetaSVM	Uncertain	-0.043	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		7.6
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.29
Sift	Benign	0.040	D
Sift4G	Uncertain	0.037	D
Polyphen		0.99	D
Vest4		0.73
MutPred		0.58		Gain of disorder (P = 0.0348)
MVP		0.22
MPC		1.2
ClinPred		0.92	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.24
gMVP		0.35
Mutation Taster		=11/89	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs749094914; hg19: chr16-70732632;