rs3027464

Variant names:

• chrX-43808099-A-C
• rs3027464
• NM_000898.5:c.280-4695T>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_000898.5(MAOB):​c.280-4695T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0133 in 111,162 control chromosomes in the GnomAD database, including 40 homozygotes. There are 345 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 0.013 (40 hom., 345 hem., cov: 22)
• Consequence: MAOB NM_000898.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.384
• Publications: 1 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=-0.91).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0133 (1476/111162) while in subpopulation AFR AF = 0.0445 (1357/30469). AF 95% confidence interval is 0.0426. There are 40 homozygotes in GnomAd4. There are 345 alleles in the male GnomAd4 subpopulation. Median coverage is 22. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 40 gene

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAOB	NM_000898.5	MANE Select	c.280-4695T>G		intron	N/A	NP_000889.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAOB	ENST00000378069.5	TSL:1 MANE Select	c.280-4695T>G		intron	N/A	ENSP00000367309.4	P27338-1
	MAOB	ENST00000890313.1		c.280-4695T>G		intron	N/A	ENSP00000560372.1
	MAOB	ENST00000890309.1		c.280-4695T>G		intron	N/A	ENSP00000560368.1

Frequencies

GnomAD3 genomes AF: 0.0133 AC: 1473 AN: 111110 Hom.: 40 Cov.: 22

Gnomad AFR AF: 0.0445

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00877

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00418

Gnomad NFE AF: 0.0000377

Gnomad OTH AF: 0.0161

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

GnomAD4 genome AF: 0.0133 AC: 1476 AN: 111162 Hom.: 40 Cov.: 22 AF XY: 0.0103 AC XY: 345 AN XY: 33340

African (AFR) AF: 0.0445 AC: 1357 AN: 30469

American (AMR) AF: 0.00876 AC: 92 AN: 10508

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2641

East Asian (EAS) AF: 0.00 AC: 0 AN: 3505

South Asian (SAS) AF: 0.00 AC: 0 AN: 2547

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 5991

Middle Eastern (MID) AF: 0.00457 AC: 1 AN: 219

European-Non Finnish (NFE) AF: 0.0000377 AC: 2 AN: 53091

Other (OTH) AF: 0.0159 AC: 24 AN: 1506

Alfa AF: 0.00360 Hom.: 84

Bravo AF: 0.0160

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	5.6
DANN	Benign	0.68
PhyloP100		0.38
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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs3027464;

hg19: chrX-43667346;