Variant 1-220748799-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_017898.5(MTARC2):c.268G>T(p.Asp90Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000201 in 1,591,352 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

MTARC2
NM_017898.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.22

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:

MTARC2 (HGNC:):

MTARC2 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.983

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTARC2	NM_017898.5 linkuse as main transcript	c.268G>T	p.Asp90Tyr	missense_variant	1/8	ENST00000366913.8	NP_060368.2	Q969Z3-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
MTARC2	ENST00000366913.8 linkuse as main transcript	c.268G>T	p.Asp90Tyr	missense_variant	1/8	1	NM_017898.5	ENSP00000355880.3	Q969Z3-1
MTARC2	ENST00000359316.6 linkuse as main transcript	c.268G>T	p.Asp90Tyr	missense_variant	1/5	1		ENSP00000352266.2	Q969Z3-2
MTARC2	ENST00000469583.1 linkuse as main transcript	n.268G>T		non_coding_transcript_exon_variant	1/3	3		ENSP00000435450.1	F6V6Z1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000244

AC:

AN:

204538

Hom.:

AF XY:

0.00000899

AC XY:

AN XY:

111216

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000645

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000658

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000228

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000208

AC:

AN:

1439014

Hom.:

Cov.:

AF XY:

0.0000168

AC XY:

AN XY:

714136

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000711

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000526

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000209

Gnomad4 OTH exome

AF:

0.0000337

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

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:

0.0000434

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000167

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

Nov 07, 2024

The c.268G>T (p.D90Y) alteration is located in exon 1 (coding exon 1) of the MARC2 gene. This alteration results from a G to T substitution at nucleotide position 268, causing the aspartic acid (D) at amino acid position 90 to be replaced by a tyrosine (Y). 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

Pathogenic

0.91

BayesDel_addAF

Pathogenic

0.38

BayesDel_noAF

Pathogenic

0.31

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.41

.;T

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.92

D;D

M_CAP

Pathogenic

0.58

MetaRNN

Pathogenic

0.98

D;D

MetaSVM

Uncertain

0.63

MutationAssessor

Pathogenic

4.3

H;H

PrimateAI

Uncertain

0.68

PROVEAN

Pathogenic

-6.9

D;D

REVEL

Pathogenic

0.84

Sift

Uncertain

0.0010

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

D;D

Vest4

0.89

MutPred

0.92

Gain of MoRF binding (P = 0.0413);Gain of MoRF binding (P = 0.0413);

MVP

0.91

MPC

0.99

ClinPred

0.99

GERP RS

3.5

Varity_R

0.83

gMVP

0.97

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.26

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.26

Position offset: -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