rs201519600

Variant names:

Variant summary

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

The NM_000240.4(MAOA):c.137A>G(p.Asp46Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000168 in 1,206,525 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 65 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 0.000054 ( 0 hom., 2 hem., cov: 22)

Exomes 𝑓: 0.00018 ( 0 hom. 63 hem. )

Consequence

MAOA
NM_000240.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 5.16

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, 0.864

BS2

High Hemizygotes in GnomAd4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAOA	NM_000240.4 link	c.137A>G	p.Asp46Gly	missense_variant	Exon 2 of 15	ENST00000338702.4	NP_000231.1	P21397-1Q53YE7Q49A63
MAOA	NM_001270458.2 link	c.-263A>G		5_prime_UTR_variant	Exon 3 of 16		NP_001257387.1	P21397-2Q49A63

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAOA	ENST00000338702.4 link	c.137A>G	p.Asp46Gly	missense_variant	Exon 2 of 15	1	NM_000240.4	ENSP00000340684.3		P21397-1

Frequencies

GnomAD3 genomes

AF:

0.0000537

AC:

AN:

111680

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

33844

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000113

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000491

AC:

AN:

183292

Hom.:

AF XY:

0.0000590

AC XY:

AN XY:

67814

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:

0.0000625

Gnomad NFE exome

AF:

0.0000978

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000180

AC:

197

AN:

1094845

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

360291

show subpopulations

Gnomad4 AFR exome

AF:

0.0000379

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:

0.0000494

Gnomad4 NFE exome

AF:

0.000225

Gnomad4 OTH exome

AF:

0.000109

GnomAD4 genome

AF:

0.0000537

AC:

AN:

111680

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

33844

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.000113

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000907

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00104

AC:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 08, 2014

The c.137A>G (p.D46G) alteration is located in exon 2 (coding exon 2) of the MAOA gene. This alteration results from a A to G substitution at nucleotide position 137, causing the aspartic acid (D) at amino acid position 46 to be replaced by a glycine (G). The heterozygous missense change is ultra rare in healthy individuals:_x000D_ Based on data from the NHLBI Exome Sequencing Project (ESP), the MAOA c.137A>G alteration was not observed among 6,503 individuals tested. Allele frequency data for this nucleotide position are not currently available from the 1000 Genomes Project. This variant is reported in the SNPDatabase as rs201519600. The altered amino acid is conserved throughout evolution:_x000D_ The p.D46 amino acid is well conserved in available vertebrate species. The amino acid is located in a functionally important protein domain:_x000D_ The p.D46G amino acid is located within the FAD-binding domain of the MAOA protein (Colibus, 2005). In silico prediction is conflicting:_x000D_ The p.D46G alteration is predicted to be possibly damaging by Polyphen and tolerated by SIFT in silico analyses. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

May 31, 2017

- -

Brunner syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 16, 2024

This sequence change replaces aspartic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 46 of the MAOA protein (p.Asp46Gly). This variant is present in population databases (rs201519600, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with MAOA-related conditions. ClinVar contains an entry for this variant (Variation ID: 225101). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt MAOA protein function with a negative predictive value of 80%. 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

0.12

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Pathogenic

0.30

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.86

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.93

M_CAP

Pathogenic

0.75

MetaRNN

Pathogenic

0.86

MetaSVM

Pathogenic

0.94

MutationAssessor

Pathogenic

3.1

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-5.6

REVEL

Pathogenic

0.86

Sift

Benign

0.050

Sift4G

Uncertain

0.0070

Polyphen

0.66

Vest4

0.46

MVP

0.99

MPC

1.2

ClinPred

0.41

GERP RS

5.5

Varity_R

0.86

gMVP

0.97

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