Variant 1-220781795-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_017898.5(MTARC2):c.902C>T(p.Pro301Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,818 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MTARC2
NM_017898.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.88

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTARC2	NM_017898.5 linkuse as main transcript	c.902C>T	p.Pro301Leu	missense_variant	7/8	ENST00000366913.8	NP_060368.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTARC2	ENST00000366913.8 linkuse as main transcript	c.902C>T	p.Pro301Leu	missense_variant	7/8	1	NM_017898.5	ENSP00000355880	P1	Q969Z3-1
MTARC2	ENST00000359316.6 linkuse as main transcript	c.751-2124C>T		intron_variant		1		ENSP00000352266		Q969Z3-2
MTARC2	ENST00000472447.1 linkuse as main transcript	n.296C>T		non_coding_transcript_exon_variant	2/3	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461818

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727204

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

May 23, 2024

The c.902C>T (p.P301L) alteration is located in exon 7 (coding exon 7) of the MARC2 gene. This alteration results from a C to T substitution at nucleotide position 902, causing the proline (P) at amino acid position 301 to be replaced by a leucine (L). 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

Uncertain

0.036

BayesDel_noAF

Benign

-0.19

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.90

M_CAP

Benign

0.032

MetaRNN

Uncertain

0.48

MetaSVM

Benign

-0.86

MutationAssessor

Pathogenic

3.9

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.46

PROVEAN

Pathogenic

-8.2

REVEL

Benign

0.22

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.015

Polyphen

0.98

Vest4

0.34

MutPred

0.41

Loss of disorder (P = 0.0377);

MVP

0.64

MPC

0.92

ClinPred

1.0

GERP RS

6.0

Varity_R

0.66

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over