Variant X-43731788-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_000240.4(MAOA):c.890G>A(p.Arg297Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000307 in 1,205,528 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 14 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 0 hem., cov: 22)

Exomes 𝑓: 0.000032 ( 0 hom. 14 hem. )

Consequence

MAOA
NM_000240.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.46

Variant links:

Genes affected

MAOA (HGNC:6833): (monoamine oxidase A) This gene is one of two neighboring gene family members that encode mitochondrial enzymes which catalyze the oxidative deamination of amines, such as dopamine, norepinephrine, and serotonin. Mutation of this gene results in Brunner syndrome. This gene has also been associated with a variety of other psychiatric disorders, including antisocial behavior. Alternatively spliced transcript variants encoding multiple isoforms have been observed. [provided by RefSeq, Jul 2012]

MAOA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.882

BS2

High Hemizygotes in GnomAdExome4 at 14 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAOA	NM_000240.4 linkuse as main transcript	c.890G>A	p.Arg297Gln	missense_variant	8/15	ENST00000338702.4	NP_000231.1
MAOA	NM_001270458.2 linkuse as main transcript	c.491G>A	p.Arg164Gln	missense_variant	9/16		NP_001257387.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MAOA	ENST00000338702.4 linkuse as main transcript	c.890G>A	p.Arg297Gln	missense_variant	8/15	1	NM_000240.4	ENSP00000340684	P1	P21397-1

Frequencies

GnomAD3 genomes

AF:

0.0000180

AC:

AN:

111380

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33550

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000282

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000164

AC:

AN:

183152

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

67730

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000367

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000320

AC:

AN:

1094148

Hom.:

Cov.:

AF XY:

0.0000389

AC XY:

AN XY:

359604

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000417

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000180

AC:

AN:

111380

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33550

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000282

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000346

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Brunner syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 26, 2021

This sequence change replaces arginine with glutamine at codon 297 of the MAOA protein (p.Arg297Gln). The arginine residue is highly conserved and there is a small physicochemical difference between arginine and glutamine. This variant is present in population databases (rs780647851, ExAC 0.002%). This variant has not been reported in the literature in individuals affected with MAOA-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.34

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.83

.;D

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D

M_CAP

Pathogenic

0.61

MetaRNN

Pathogenic

0.88

D;D

MetaSVM

Pathogenic

0.97

MutationAssessor

Uncertain

2.8

.;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-3.8

D;D

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0030

D;D

Sift4G

Uncertain

0.0050

D;D

Polyphen

1.0

.;D

Vest4

0.70

MVP

0.98

MPC

1.8

ClinPred

0.89

GERP RS

5.6

Varity_R

0.90

gMVP

0.95

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