20-33659657-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_031232.4(NECAB3):​c.719G>A​(p.Cys240Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 33)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

NECAB3
NM_031232.4 missense

Scores

5
14

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.33
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.3214478).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
NECAB3NM_031232.4 linkc.719G>A p.Cys240Tyr missense_variant 8/12 ENST00000246190.11 NP_112509.3 Q96P71-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
NECAB3ENST00000246190.11 linkc.719G>A p.Cys240Tyr missense_variant 8/125 NM_031232.4 ENSP00000246190.6 Q96P71-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
1458768
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
725724
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:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

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 submitterclinical testingAmbry GeneticsSep 03, 2024The c.719G>A (p.C240Y) alteration is located in exon 8 (coding exon 8) of the NECAB3 gene. This alteration results from a G to A substitution at nucleotide position 719, causing the cysteine (C) at amino acid position 240 to be replaced by a tyrosine (Y). 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
-0.061
T
BayesDel_noAF
Benign
-0.32
CADD
Benign
19
DANN
Uncertain
0.99
DEOGEN2
Benign
0.11
T;.;.;T;T
Eigen
Benign
0.13
Eigen_PC
Benign
0.15
FATHMM_MKL
Uncertain
0.84
D
LIST_S2
Benign
0.84
T;T;T;T;T
M_CAP
Benign
0.023
T
MetaRNN
Benign
0.32
T;T;T;T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Uncertain
2.4
M;M;.;.;.
PrimateAI
Uncertain
0.66
T
PROVEAN
Uncertain
-3.8
D;D;.;.;D
REVEL
Benign
0.085
Sift
Benign
0.31
T;T;.;.;T
Sift4G
Benign
0.12
T;T;.;.;.
Polyphen
0.64
P;B;.;.;.
Vest4
0.39
MutPred
0.24
Gain of phosphorylation at C240 (P = 0.0275);Gain of phosphorylation at C240 (P = 0.0275);.;Gain of phosphorylation at C240 (P = 0.0275);Gain of phosphorylation at C240 (P = 0.0275);
MVP
0.26
MPC
1.0
ClinPred
0.99
D
GERP RS
4.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.23
gMVP
0.38

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr20-32247463; API