Variant 1-220748625-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_017898.5(MTARC2):c.94G>A(p.Ala32Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000403 in 1,489,966 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000037 ( 0 hom. )

Consequence

MTARC2
NM_017898.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.62

Variant links:

Genes affected

MTARC2 (HGNC:26064): (mitochondrial amidoxime reducing component 2) The protein encoded by this gene is an enzyme found in the outer mitochondrial membrane that reduces N-hydroxylated substrates. The encoded protein uses molybdenum as a cofactor and cytochrome b5 type B and NADH cytochrome b5 reductase as accessory proteins. One type of substrate used is N-hydroxylated nucleotide base analogues, which can be toxic to a cell. Other substrates include N(omega)-hydroxy-L-arginine (NOHA) and amidoxime prodrugs, which are activated by the encoded enzyme. Multiple transcript variants encoding the different isoforms have been found for this gene. [provided by RefSeq, Sep 2016]

MTARC2 links:

LOC124904516 (HGNC:):

LOC124904516 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.015532762).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTARC2	NM_017898.5 linkuse as main transcript	c.94G>A	p.Ala32Thr	missense_variant	1/8	ENST00000366913.8	NP_060368.2
LOC124904516	XR_007066884.1 linkuse as main transcript	n.191C>T		non_coding_transcript_exon_variant	1/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTARC2	ENST00000366913.8 linkuse as main transcript	c.94G>A	p.Ala32Thr	missense_variant	1/8	1	NM_017898.5	ENSP00000355880	P1	Q969Z3-1
MTARC2	ENST00000359316.6 linkuse as main transcript	c.94G>A	p.Ala32Thr	missense_variant	1/5	1		ENSP00000352266		Q969Z3-2
MTARC2	ENST00000469583.1 linkuse as main transcript	c.94G>A	p.Ala32Thr	missense_variant, NMD_transcript_variant	1/3	3		ENSP00000435450

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152094

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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

GnomAD4 exome

AF:

0.00000374

AC:

AN:

1337872

Hom.:

Cov.:

AF XY:

0.00000152

AC XY:

AN XY:

660030

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000130

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.44e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152094

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74294

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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

Bravo

AF:

0.0000113

ExAC

AF:

0.0000104

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 10, 2023

The c.94G>A (p.A32T) alteration is located in exon 1 (coding exon 1) of the MARC2 gene. This alteration results from a G to A substitution at nucleotide position 94, causing the alanine (A) at amino acid position 32 to be replaced by a threonine (T). 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

0.16

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.53

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.049

.;T

Eigen

Benign

-0.029

Eigen_PC

Benign

-0.099

FATHMM_MKL

Benign

0.56

LIST_S2

Benign

0.67

T;T

M_CAP

Uncertain

0.21

MetaRNN

Benign

0.016

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-2.2

N;N

REVEL

Benign

0.054

Sift

Benign

0.080

T;T

Sift4G

Uncertain

0.0090

D;D

Polyphen

0.96

D;P

Vest4

0.16

MutPred

0.25

Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);

MVP

0.40

MPC

0.25

ClinPred

0.28

GERP RS

3.5

Varity_R

0.061

gMVP

0.63

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