Variant 1-201718518-C-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001389617.1(NAV1):c.1850C>T(p.Ala617Val) variant causes a missense change. The variant allele was found at a frequency of 0.000000686 in 1,458,542 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

NAV1
NM_001389617.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.63

Variant links:

Genes affected

NAV1 (HGNC:15989): (neuron navigator 1) 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. The exact function of this gene is not known, but it is thought to play a role in in neuronal development and regeneration. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2009]

NAV1 links:

IPO9-AS1 (HGNC:40892): (IPO9 antisense RNA 1)

IPO9-AS1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NAV1	NM_001389617.1 linkuse as main transcript	c.1850C>T	p.Ala617Val	missense_variant	7/34	ENST00000685211.1	NP_001376546.1
IPO9-AS1	NR_046696.1 linkuse as main transcript	n.685-30105G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NAV1	ENST00000685211.1 linkuse as main transcript	c.1850C>T	p.Ala617Val	missense_variant	7/34		NM_001389617.1	ENSP00000510803	P2
IPO9-AS1	ENST00000413035.5 linkuse as main transcript	n.685-30105G>A		intron_variant, non_coding_transcript_variant		3
NAV1	ENST00000367296.8 linkuse as main transcript	c.989C>T	p.Ala330Val	missense_variant	3/30	5		ENSP00000356265	A2	Q8NEY1-1
NAV1	ENST00000367302.5 linkuse as main transcript	c.1028C>T	p.Ala343Val	missense_variant	5/30	5		ENSP00000356271	A2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1458542

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725136

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:

9.01e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

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

Jul 13, 2022

The c.989C>T (p.A330V) alteration is located in exon 3 (coding exon 3) of the NAV1 gene. This alteration results from a C to T substitution at nucleotide position 989, causing the alanine (A) at amino acid position 330 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

Pathogenic

0.86

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.32

.;T

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

1.0

D;D

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.56

D;D

MetaSVM

Benign

-0.54

MutationAssessor

Uncertain

2.8

.;M

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-2.9

D;D

REVEL

Benign

0.23

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Vest4

0.80

MutPred

0.11

.;Gain of MoRF binding (P = 0.126);

MVP

0.43

MPC

2.1

ClinPred

0.99

GERP RS

5.6

Varity_R

0.61

gMVP

0.75

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