rs7977620

chr12-77827388-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000550042.2(NAV3):c.73-112931G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.309 in 151,574 control chromosomes in the GnomAD database, including 8,235 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.31 (8235 hom., cov: 32)
• Consequence: NAV3 ENST00000550042.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.912

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.98).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.419 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NAV3	XM_017020166.3	c.73-112931G>A		intron_variant
NAV3	XM_017020167.1	c.73-112931G>A		intron_variant
NAV3	XM_047429817.1	c.73-112931G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NAV3	ENST00000550042.2	c.73-112931G>A		intron_variant		5

Frequencies

GnomAD3 genomes AF: 0.310 AC: 46918 AN: 151460 Hom.: 8241 Cov.: 32

Gnomad AFR AF: 0.134

Gnomad AMI AF: 0.325

Gnomad AMR AF: 0.343

Gnomad ASJ AF: 0.318

Gnomad EAS AF: 0.434

Gnomad SAS AF: 0.286

Gnomad FIN AF: 0.431

Gnomad MID AF: 0.342

Gnomad NFE AF: 0.381

Gnomad OTH AF: 0.311

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.309 AC: 46905 AN: 151574 Hom.: 8235 Cov.: 32 AF XY: 0.313 AC XY: 23148 AN XY: 74052

Gnomad4 AFR AF: 0.134

Gnomad4 AMR AF: 0.344

Gnomad4 ASJ AF: 0.318

Gnomad4 EAS AF: 0.434

Gnomad4 SAS AF: 0.285

Gnomad4 FIN AF: 0.431

Gnomad4 NFE AF: 0.381

Gnomad4 OTH AF: 0.307

Alfa AF: 0.368 Hom.: 12377

Bravo AF: 0.300

Asia WGS AF: 0.312 AC: 1084 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.98
Cadd	Benign	0.036
Dann	Benign	0.34

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs7977620; hg19: chr12-78221168;