Genetic Variant NECAB3:p.Gly189Ser (chr20-33659963-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_031232.4(NECAB3):c.565G>A(p.Gly189Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000271 in 1,562,136 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00062 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00023 ( 2 hom. )

Consequence

NECAB3
NM_031232.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.421

Variant links:

Genes affected

NECAB3 (HGNC:15851): (N-terminal EF-hand calcium binding protein 3) The protein encoded by this gene interacts with the amino-terminal domain of the neuron-specific X11-like protein (X11L), inhibits the association of X11L with amyloid precursor protein through a non-competitive mechanism, and abolishes the suppression of beta-amyloid production by X11L. This protein, together with X11L, may play an important role in the regulatory system of amyloid precursor protein metabolism and beta-amyloid generation. The protein is phosphorylated by NIMA-related expressed kinase 2, and localizes to the Golgi apparatus. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

NECAB3 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=0.005164832).

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NECAB3	NM_031232.4 link	c.565G>A	p.Gly189Ser	missense_variant	Exon 7 of 12	ENST00000246190.11	NP_112509.3	Q96P71-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NECAB3	ENST00000246190.11 link	c.565G>A	p.Gly189Ser	missense_variant	Exon 7 of 12	5	NM_031232.4	ENSP00000246190.6		Q96P71-1

Frequencies

GnomAD3 genomes

AF:

0.000624

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00157

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000588

Gnomad ASJ

AF:

0.00317

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000273

AC:

AN:

164558

Hom.:

AF XY:

0.000235

AC XY:

AN XY:

89490

show subpopulations

Gnomad AFR exome

AF:

0.000673

Gnomad AMR exome

AF:

0.000350

Gnomad ASJ exome

AF:

0.00248

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000104

Gnomad OTH exome

AF:

0.000444

GnomAD4 exome

AF:

0.000233

AC:

328

AN:

1409842

Hom.:

Cov.:

AF XY:

0.000235

AC XY:

164

AN XY:

697174

show subpopulations

Gnomad4 AFR exome

AF:

0.00159

Gnomad4 AMR exome

AF:

0.000435

Gnomad4 ASJ exome

AF:

0.00178

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000124

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000165

Gnomad4 OTH exome

AF:

0.000512

GnomAD4 genome

AF:

0.000624

AC:

AN:

152294

Hom.:

Cov.:

AF XY:

0.000551

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.00156

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00317

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000609

Hom.:

Bravo

AF:

0.000831

ESP6500AA

AF:

0.000282

AC:

ESP6500EA

AF:

0.000131

AC:

ExAC

AF:

0.000121

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 18, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.565G>A (p.G189S) alteration is located in exon 7 (coding exon 7) of the NECAB3 gene. This alteration results from a G to A substitution at nucleotide position 565, causing the glycine (G) at amino acid position 189 to be replaced by a serine (S). 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

0.083

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.57

CADD

Benign

4.6

DANN

Benign

0.77

DEOGEN2

Benign

0.0082

T;.;T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.070

LIST_S2

Benign

0.70

T;T;T;T

M_CAP

Benign

0.0057

MetaRNN

Benign

0.0052

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;L;.;.

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.75

N;N;.;N

REVEL

Benign

0.039

Sift

Benign

0.73

T;T;.;T

Sift4G

Benign

0.97

T;T;.;.

Polyphen

0.022

B;B;.;.

Vest4

0.11

MVP

0.23

MPC

0.31

ClinPred

0.0016

GERP RS

1.9

RBP_binding_hub_radar

1.0

RBP_regulation_power_radar

2.1

Varity_R

0.028

gMVP

0.14

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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