16-77788771-G-A

Position:

• chr16-77788771-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020927.3(VAT1L):​c.89G>A​(p.Gly30Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,220 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 32)
• Consequence: VAT1L NM_020927.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.22

Genes affected

VAT1L (HGNC:29315): (vesicle amine transport 1 like) Predicted to enable oxidoreductase activity and zinc ion binding activity. [provided by Alliance of Genome Resources, Apr 2022]

LOC107984878 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.103511095).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VAT1L	NM_020927.3	c.89G>A	p.Gly30Asp	missense_variant	1/9	ENST00000302536.3	NP_065978.1
LOC107984878	XR_001752259.2	n.70-14750C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VAT1L	ENST00000302536.3	c.89G>A	p.Gly30Asp	missense_variant	1/9	1	NM_020927.3	ENSP00000303129	P1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152220 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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152220 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74362

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: 0.0000147

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 21, 2024

The c.89G>A (p.G30D) alteration is located in exon 1 (coding exon 1) of the VAT1L gene. This alteration results from a G to A substitution at nucleotide position 89, causing the glycine (G) at amino acid position 30 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.028	T
Eigen	Benign	-0.15
Eigen_PC	Benign	0.040
FATHMM_MKL	Benign	0.66	D
LIST_S2	Benign	0.52	T
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.10	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	0.54	D
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	0.21	N
REVEL	Benign	0.067
Sift	Benign	0.031	D
Sift4G	Uncertain	0.056	T
Polyphen		0.0010	B
Vest4		0.29
MutPred		0.20		Loss of catalytic residue at G28 (P = 0.0926);
MVP		0.28
MPC		0.57
ClinPred		0.88	D
GERP RS		5.0
Varity_R		0.20
gMVP		0.50

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: rs1485819422; hg19: chr16-77822668;