NM_002197.3:c.502C>T

Variant names:

Variant summary

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

The NM_002197.3(ACO1):c.502C>T(p.Arg168Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000905 in 1,614,078 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 0.00050 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00095 ( 1 hom. )

Consequence

ACO1
NM_002197.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.261

Variant links:

Genes affected

ACO1 (HGNC:117): (aconitase 1) The protein encoded by this gene is a bifunctional, cytosolic protein that functions as an essential enzyme in the TCA cycle and interacts with mRNA to control the levels of iron inside cells. When cellular iron levels are high, this protein binds to a 4Fe-4S cluster and functions as an aconitase. Aconitases are iron-sulfur proteins that function to catalyze the conversion of citrate to isocitrate. When cellular iron levels are low, the protein binds to iron-responsive elements (IREs), which are stem-loop structures found in the 5' UTR of ferritin mRNA, and in the 3' UTR of transferrin receptor mRNA. When the protein binds to IRE, it results in repression of translation of ferritin mRNA, and inhibition of degradation of the otherwise rapidly degraded transferrin receptor mRNA. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. Alternative splicing results in multiple transcript variants [provided by RefSeq, Jan 2014]

ACO1 links:

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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=0.27972028).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ACO1	NM_002197.3 link	c.502C>T	p.Arg168Trp	missense_variant	Exon 6 of 21	ENST00000309951.8	NP_002188.1	P21399V9HWB7
ACO1	NM_001278352.2 link	c.502C>T	p.Arg168Trp	missense_variant	Exon 7 of 22		NP_001265281.1	P21399V9HWB7Q9HBB2
ACO1	NM_001362840.2 link	c.502C>T	p.Arg168Trp	missense_variant	Exon 7 of 22		NP_001349769.1
ACO1	XM_047423430.1 link	c.526C>T	p.Arg176Trp	missense_variant	Exon 6 of 21		XP_047279386.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ACO1	ENST00000309951.8 link	c.502C>T	p.Arg168Trp	missense_variant	Exon 6 of 21	1	NM_002197.3	ENSP00000309477.5	P21399
ACO1	ENST00000379923.5 link	c.502C>T	p.Arg168Trp	missense_variant	Exon 7 of 22	5		ENSP00000369255.1	P21399
ACO1	ENST00000541043.5 link	c.502C>T	p.Arg168Trp	missense_variant	Exon 7 of 22	5		ENSP00000438733.2	P21399

Frequencies

GnomAD3 genomes

AF:

0.000500

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00104

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000489

AC:

123

AN:

251336

Hom.:

AF XY:

0.000390

AC XY:

AN XY:

135844

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00102

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000947

AC:

1385

AN:

1461824

Hom.:

Cov.:

AF XY:

0.000895

AC XY:

651

AN XY:

727224

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000128

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.00120

Gnomad4 OTH exome

AF:

0.000580

GnomAD4 genome

AF:

0.000499

AC:

AN:

152254

Hom.:

Cov.:

AF XY:

0.000390

AC XY:

AN XY:

74436

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00104

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000938

Hom.:

Bravo

AF:

0.000589

TwinsUK

AF:

0.00216

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000486

AC:

EpiCase

AF:

0.00115

EpiControl

AF:

0.00101

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Aug 15, 2023

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.32

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Uncertain

0.030

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;T;T

Eigen

Benign

-0.093

Eigen_PC

Benign

-0.20

FATHMM_MKL

Uncertain

0.97

LIST_S2

Pathogenic

0.99

D;.;.

M_CAP

Benign

0.052

MetaRNN

Benign

0.28

T;T;T

MetaSVM

Benign

-0.57

MutationAssessor

Uncertain

2.5

M;M;M

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-1.7

.;N;N

REVEL

Uncertain

0.41

Sift

Uncertain

0.017

.;D;D

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.67

MVP

0.47

MPC

0.79

ClinPred

0.39

GERP RS

-3.1

Varity_R

0.54

gMVP

0.90

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.17

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