Genetic Variant AOC1:p.Arg251Trp (chr7-150857221-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001091.4(AOC1):c.751C>T(p.Arg251Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,612,476 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

AOC1
NM_001091.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.271

Variant links:

Genes affected

AOC1 (HGNC:80): (amine oxidase copper containing 1) This gene encodes a metal-binding membrane glycoprotein that oxidatively deaminates putrescine, histamine, and related compounds. The encoded protein is inhibited by amiloride, a diuretic that acts by closing epithelial sodium ion channels. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Jan 2013]

AOC1 links:

LOC105375567 (HGNC:):

LOC105375567 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13903844).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AOC1	NM_001091.4 link	c.751C>T	p.Arg251Trp	missense_variant	Exon 2 of 5	ENST00000360937.9	NP_001082.2	P19801-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AOC1	ENST00000360937.9 link	c.751C>T	p.Arg251Trp	missense_variant	Exon 2 of 5	1	NM_001091.4	ENSP00000354193.4		P19801-1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000242

AC:

AN:

247572

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

134202

show subpopulations

Gnomad AFR exome

AF:

0.000194

Gnomad AMR exome

AF:

0.0000291

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:

0.00000890

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000110

AC:

AN:

1460304

Hom.:

Cov.:

AF XY:

0.00000826

AC XY:

AN XY:

726272

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.000121

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.000240

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 30, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.751C>T (p.R251W) alteration is located in exon 2 (coding exon 1) of the AOC1 gene. This alteration results from a C to T substitution at nucleotide position 751, causing the arginine (R) at amino acid position 251 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.51

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;T;T;.;T

Eigen

Benign

-0.39

Eigen_PC

Benign

-0.57

FATHMM_MKL

Benign

0.094

LIST_S2

Uncertain

0.89

.;D;.;D;D

M_CAP

Benign

0.0069

MetaRNN

Benign

0.14

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

L;L;L;L;.

PrimateAI

Benign

0.29

PROVEAN

Uncertain

-4.1

D;D;D;D;D

REVEL

Benign

0.061

Sift

Uncertain

0.0080

D;D;D;D;D

Sift4G

Uncertain

0.055

T;T;T;T;D

Polyphen

1.0

D;D;D;.;.

Vest4

0.19

MVP

0.33

MPC

0.22

ClinPred

0.10

GERP RS

1.3

Varity_R

0.30

gMVP

0.46

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