NM_000898.5:c.1235+1478C>A

Variant names:

• chrX-43773697-G-T
• rs2283727
• NM_000898.5:c.1235+1478C>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000898.5(MAOB):​c.1235+1478C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0382 in 111,730 control chromosomes in the GnomAD database, including 170 homozygotes. There are 1,277 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.038 (170 hom., 1277 hem., cov: 23)
• Consequence: MAOB NM_000898.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.578
• Publications: 4 publications found

Genes affected

MAOB (HGNC:6834): (monoamine oxidase B) The protein encoded by this gene belongs to the flavin monoamine oxidase family. It is a enzyme located in the mitochondrial outer membrane. It catalyzes the oxidative deamination of biogenic and xenobiotic amines and plays an important role in the metabolism of neuroactive and vasoactive amines in the central nervous sysytem and peripheral tissues. This protein preferentially degrades benzylamine and phenylethylamine. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.166 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000898.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAOB	NM_000898.5	MANE Select	c.1235+1478C>A		intron	N/A	NP_000889.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAOB	ENST00000378069.5	TSL:1 MANE Select	c.1235+1478C>A		intron	N/A	ENSP00000367309.4

Frequencies

GnomAD3 genomes AF: 0.0381 AC: 4254 AN: 111677 Hom.: 167 Cov.: 23

Gnomad AFR AF: 0.0966

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0187

Gnomad ASJ AF: 0.0200

Gnomad EAS AF: 0.0981

Gnomad SAS AF: 0.181

Gnomad FIN AF: 0.000491

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00322

Gnomad OTH AF: 0.0328

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0382 AC: 4273 AN: 111730 Hom.: 170 Cov.: 23 AF XY: 0.0377 AC XY: 1277 AN XY: 33914

African (AFR) AF: 0.0967 AC: 2967 AN: 30672

American (AMR) AF: 0.0185 AC: 196 AN: 10573

Ashkenazi Jewish (ASJ) AF: 0.0200 AC: 53 AN: 2654

East Asian (EAS) AF: 0.0984 AC: 345 AN: 3506

South Asian (SAS) AF: 0.180 AC: 474 AN: 2639

European-Finnish (FIN) AF: 0.000491 AC: 3 AN: 6107

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 218

European-Non Finnish (NFE) AF: 0.00322 AC: 171 AN: 53160

Other (OTH) AF: 0.0422 AC: 64 AN: 1515

Alfa AF: 0.00375 Hom.: 22

Bravo AF: 0.0413

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	0.72
DANN	Benign	0.85
PhyloP100		-0.58
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs2283727; hg19: chrX-43632944;