Variant 15-90440612-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_003870.4(IQGAP1):c.646G>A(p.Ala216Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000275 in 1,554,486 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 1 hom. )

Consequence

IQGAP1
NM_003870.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.82

Variant links:

Genes affected

IQGAP1 (HGNC:6110): (IQ motif containing GTPase activating protein 1) This gene encodes a member of the IQGAP family. The protein contains four IQ domains, one calponin homology domain, one Ras-GAP domain and one WW domain. It interacts with components of the cytoskeleton, with cell adhesion molecules, and with several signaling molecules to regulate cell morphology and motility. Expression of the protein is upregulated by gene amplification in two gastric cancer cell lines. [provided by RefSeq, Jul 2008]

IQGAP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.3895913).

BS2

High AC in GnomAd at 20 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IQGAP1	NM_003870.4 linkuse as main transcript	c.646G>A	p.Ala216Thr	missense_variant	7/38	ENST00000268182.10
IQGAP1	XM_047433204.1 linkuse as main transcript	c.646G>A	p.Ala216Thr	missense_variant	7/30

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
IQGAP1	ENST00000268182.10 linkuse as main transcript	c.646G>A	p.Ala216Thr	missense_variant	7/38	1	NM_003870.4	P1
IQGAP1	ENST00000560738.1 linkuse as main transcript	c.107-25435G>A		intron_variant		5
IQGAP1	ENST00000633485.1 linkuse as main transcript	c.646G>A	p.Ala216Thr	missense_variant, NMD_transcript_variant	7/39	5

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000279

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000103

AC:

AN:

164562

Hom.:

AF XY:

0.0000927

AC XY:

AN XY:

86274

show subpopulations

Gnomad AFR exome

AF:

0.000101

Gnomad AMR exome

AF:

0.0000405

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:

0.000199

Gnomad OTH exome

AF:

0.000439

GnomAD4 exome

AF:

0.000291

AC:

408

AN:

1402288

Hom.:

Cov.:

AF XY:

0.000273

AC XY:

189

AN XY:

692112

show subpopulations

Gnomad4 AFR exome

AF:

0.000124

Gnomad4 AMR exome

AF:

0.0000559

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:

0.000362

Gnomad4 OTH exome

AF:

0.000189

GnomAD4 genome

AF:

0.000131

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000279

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000130

Hom.:

Bravo

AF:

0.0000831

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

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 submitter

clinical testing

Ambry Genetics

Feb 14, 2023

The c.646G>A (p.A216T) alteration is located in exon 7 (coding exon 7) of the IQGAP1 gene. This alteration results from a G to A substitution at nucleotide position 646, causing the alanine (A) at amino acid position 216 to be replaced by a threonine (T). 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

Uncertain

0.34

BayesDel_addAF

Benign

-0.027

BayesDel_noAF

Benign

-0.28

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.44

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.019

MetaRNN

Benign

0.39

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.3

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-3.0

REVEL

Benign

0.20

Sift

Benign

0.19

Sift4G

Uncertain

0.045

Polyphen

0.99

Vest4

0.48

MVP

0.50

MPC

0.16

ClinPred

0.48

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.40

gMVP

0.70

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