Genetic Variant NCKAP1:p.Ile987Val (chr2-182928894-T-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_013436.5(NCKAP1):c.2959A>G(p.Ile987Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000276 in 1,446,860 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000028 ( 0 hom. )

Consequence

NCKAP1
NM_013436.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.02

Variant links:

Genes affected

NCKAP1 (HGNC:7666): (NCK associated protein 1) Contributes to small GTPase binding activity. Involved in Rac protein signal transduction; positive regulation of Arp2/3 complex-mediated actin nucleation; and positive regulation of lamellipodium assembly. Located in extracellular exosome and focal adhesion. Part of SCAR complex. [provided by Alliance of Genome Resources, Apr 2022]

NCKAP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.123955846).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NCKAP1	NM_013436.5 link	c.2959A>G	p.Ile987Val	missense_variant	Exon 28 of 31	ENST00000361354.9	NP_038464.1	Q9Y2A7-1
NCKAP1	NM_205842.3 link	c.2977A>G	p.Ile993Val	missense_variant	Exon 29 of 32		NP_995314.1	Q9Y2A7-2
NCKAP1	XM_006712200.4 link	c.2971A>G	p.Ile991Val	missense_variant	Exon 29 of 32		XP_006712263.1	A0A994J6K9
NCKAP1	XM_006712201.4 link	c.2953A>G	p.Ile985Val	missense_variant	Exon 28 of 31		XP_006712264.1	A0A994J4I5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NCKAP1	ENST00000361354.9 link	c.2959A>G	p.Ile987Val	missense_variant	Exon 28 of 31	1	NM_013436.5	ENSP00000355348.3		Q9Y2A7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000122

AC:

AN:

245210

Hom.:

AF XY:

0.0000226

AC XY:

AN XY:

132554

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000166

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000276

AC:

AN:

1446860

Hom.:

Cov.:

AF XY:

0.00000417

AC XY:

AN XY:

720202

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

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.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

May 13, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2977A>G (p.I993V) alteration is located in exon 29 (coding exon 29) of the NCKAP1 gene. This alteration results from a A to G substitution at nucleotide position 2977, causing the isoleucine (I) at amino acid position 993 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

Benign

0.066

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.25

T;.

Eigen

Benign

-0.23

Eigen_PC

Benign

0.00043

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.88

D;D

M_CAP

Benign

0.0080

MetaRNN

Benign

0.12

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

L;.

PrimateAI

Uncertain

0.78

PROVEAN

Benign

0.20

N;N

REVEL

Benign

0.17

Sift

Benign

0.82

T;T

Sift4G

Benign

0.36

T;T

Polyphen

0.24

B;B

Vest4

0.42

MutPred

0.43

Loss of catalytic residue at P989 (P = 0.0407);.;

MVP

0.22

MPC

1.0

ClinPred

0.19

GERP RS

5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.091

gMVP

0.32

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