Genetic Variant NACA2:p.Gly151Arg (chr17-61590730-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_199290.4(NACA2):c.451G>A(p.Gly151Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00017 in 1,614,108 control chromosomes in the GnomAD database, including 6 homozygotes. 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 0.00090 ( 5 hom., cov: 32)

Exomes 𝑓: 0.000094 ( 1 hom. )

Consequence

NACA2
NM_199290.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.93

Variant links:

Genes affected

NACA2 (HGNC:23290): (nascent polypeptide associated complex subunit alpha 2) Predicted to enable unfolded protein binding activity. Predicted to be involved in protein targeting to membrane. Predicted to be located in nucleus. Predicted to be part of nascent polypeptide-associated complex. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

NACA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.007771075).

BS2

High Homozygotes in GnomAd4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NACA2	NM_199290.4 link	c.451G>A	p.Gly151Arg	missense_variant	Exon 1 of 1	ENST00000521764.3	NP_954984.1	Q9H009

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NACA2	ENST00000521764.3 link	c.451G>A	p.Gly151Arg	missense_variant	Exon 1 of 1	6	NM_199290.4	ENSP00000427802.1		Q9H009

Frequencies

GnomAD3 genomes

AF:

0.000789

AC:

120

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00268

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.0000294

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000199

AC:

AN:

251476

Hom.:

AF XY:

0.000162

AC XY:

AN XY:

135910

show subpopulations

Gnomad AFR exome

AF:

0.00271

Gnomad AMR exome

AF:

0.000145

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:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000944

AC:

138

AN:

1461884

Hom.:

Cov.:

AF XY:

0.0000963

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00230

Gnomad4 AMR exome

AF:

0.000134

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:

0.0000396

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.000900

AC:

137

AN:

152224

Hom.:

Cov.:

AF XY:

0.000887

AC XY:

AN XY:

74416

show subpopulations

Gnomad4 AFR

AF:

0.00308

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000328

Hom.:

Bravo

AF:

0.000835

ESP6500AA

AF:

0.00295

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000239

AC:

Asia WGS

AF:

0.00202

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 13, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.451G>A (p.G151R) alteration is located in exon 1 (coding exon 1) of the NACA2 gene. This alteration results from a G to A substitution at nucleotide position 451, causing the glycine (G) at amino acid position 151 to be replaced by an arginine (R). 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

0.11

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.83

DEOGEN2

Benign

0.0058

Eigen

Benign

-0.79

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.21

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.0021

MetaRNN

Benign

0.0078

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.81

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-0.84

REVEL

Benign

0.054

Sift

Benign

0.29

Sift4G

Benign

0.11

Polyphen

0.056

Vest4

0.13

MutPred

0.34

Gain of MoRF binding (P = 0.0088);

MVP

0.48

MPC

0.073

ClinPred

0.016

GERP RS

-0.50

Varity_R

0.099

gMVP

0.028

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