X-43683548-G-T

Variant names:

• chrX-43683548-G-T
• NM_000240.4:c.109G>T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000240.4(MAOA):​c.109G>T​(p.Val37Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000182 in 1,097,392 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0000018 (0 hom. 0 hem.)
• Consequence: MAOA NM_000240.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.172

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAOA	NM_000240.4	c.109G>T	p.Val37Phe	missense_variant	Exon 2 of 15	ENST00000338702.4	NP_000231.1
MAOA	NM_001270458.2	c.-291G>T		5_prime_UTR_variant	Exon 3 of 16		NP_001257387.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAOA	ENST00000338702.4	c.109G>T	p.Val37Phe	missense_variant	Exon 2 of 15	1	NM_000240.4	ENSP00000340684.3

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome AF: 0.00000182 AC: 2 AN: 1097392 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 362794

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: 0.0000247

Gnomad4 NFE exome AF: 0.00000119

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 22

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.078	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	6.0
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.61	D
FATHMM_MKL	Benign	0.025	N
LIST_S2	Uncertain	0.97	D
M_CAP	Pathogenic	0.54	D
MetaRNN	Uncertain	0.43	T
MetaSVM	Uncertain	-0.19	T
MutationAssessor	Benign	1.0	L
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-1.8	N
REVEL	Uncertain	0.36
Sift	Uncertain	0.0050	D
Sift4G	Benign	0.095	T
Polyphen		0.95	P
Vest4		0.23
MutPred		0.43		Loss of catalytic residue at V37 (P = 0.2207);
MVP		0.52
MPC		1.1
ClinPred		0.45	T
GERP RS		-5.1
Varity_R		0.45
gMVP		0.96

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-43542796;