12-77831655-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001024383.2(NAV3):c.194G>T(p.Gly65Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,688 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: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

NAV3
NM_001024383.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.73

Variant links:

Genes affected

NAV3 (HGNC:15998): (neuron navigator 3) This gene belongs to the neuron navigator family and is expressed predominantly in the nervous system. The encoded protein contains coiled-coil domains and a conserved AAA domain characteristic for ATPases associated with a variety of cellular activities. This gene is similar to unc-53, a Caenorhabditis elegans gene involved in axon guidance. Multiple alternatively spliced transcript variants for this gene have been described but only one has had its full-length nature determined. [provided by RefSeq, Jul 2008]

NAV3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.15143242).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NAV3	NM_001024383.2 linkuse as main transcript	c.194G>T	p.Gly65Val	missense_variant	1/40	ENST00000397909.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NAV3	ENST00000397909.7 linkuse as main transcript	c.194G>T	p.Gly65Val	missense_variant	1/40	1	NM_001024383.2		Q8IVL0-1
NAV3	ENST00000536525.6 linkuse as main transcript	c.194G>T	p.Gly65Val	missense_variant	1/39	1		P1	Q8IVL0-2
NAV3	ENST00000549464.5 linkuse as main transcript	c.194G>T	p.Gly65Val	missense_variant	1/10	5
NAV3	ENST00000550042.2 linkuse as main transcript	c.73-108664G>T		intron_variant		5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152152

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000804

AC:

AN:

248764

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

134944

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461536

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727076

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74326

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.00000828

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 27, 2022

The c.194G>T (p.G65V) alteration is located in exon 1 (coding exon 1) of the NAV3 gene. This alteration results from a G to T substitution at nucleotide position 194, causing the glycine (G) at amino acid position 65 to be replaced by a valine (V). 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

0.094

BayesDel_addAF

Benign

-0.025

BayesDel_noAF

Benign

-0.26

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.068

T;.;T

Eigen

Benign

-0.14

Eigen_PC

Benign

0.0066

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.79

T;T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.15

T;T;T

MetaSVM

Benign

-0.87

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Benign

0.32

PROVEAN

Uncertain

-2.6

D;N;N

REVEL

Benign

0.11

Sift

Uncertain

0.0040

D;D;D

Sift4G

Uncertain

0.051

T;D;D

Polyphen

0.022, 0.013

.;B;B

Vest4

0.26, 0.29

MutPred

0.33

Loss of loop (P = 0.0203);Loss of loop (P = 0.0203);Loss of loop (P = 0.0203);

MVP

0.19

MPC

0.26

ClinPred

0.37

GERP RS

3.7

Varity_R

0.18

gMVP

0.25

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

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