Variant 2-85539304-A-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP2PP3

The ENST00000306434.8(MAT2A):c.17A>T(p.Asn6Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,276 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N6H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

MAT2A
ENST00000306434.8 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.11

Variant links:

Genes affected

MAT2A (HGNC:6904): (methionine adenosyltransferase 2A) The protein encoded by this gene catalyzes the production of S-adenosylmethionine (AdoMet) from methionine and ATP. AdoMet is the key methyl donor in cellular processes. [provided by RefSeq, Jun 2011]

MAT2A links:

MAT2A (HGNC:):

MAT2A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), MAT2A. . Gene score misZ 3.6313 (greater than the threshold 3.09). Trascript score misZ 4.6714 (greater than threshold 3.09). GenCC has associacion of gene with familial thoracic aortic aneurysm and aortic dissection.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.796

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAT2A	NM_005911.6 linkuse as main transcript	c.17A>T	p.Asn6Ile	missense_variant	1/9	ENST00000306434.8	NP_005902.1	P31153-1A0A140VJP5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
MAT2A	ENST00000306434.8 linkuse as main transcript	c.17A>T	p.Asn6Ile	missense_variant	1/9	1	NM_005911.6	ENSP00000303147.3	P31153-1
MAT2A	ENST00000465151.5 linkuse as main transcript	n.137A>T		non_coding_transcript_exon_variant	1/2	2
MAT2A	ENST00000469221.5 linkuse as main transcript	n.137A>T		non_coding_transcript_exon_variant	1/3	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.88e-7

AC:

AN:

1453276

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723122

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.02e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 23, 2021

The p.N6I variant (also known as c.17A>T), located in coding exon 1 of the MAT2A gene, results from an A to T substitution at nucleotide position 17. The asparagine at codon 6 is replaced by isoleucine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.19

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.24

Eigen

Benign

0.099

Eigen_PC

Uncertain

0.24

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

M_CAP

Pathogenic

0.87

MetaRNN

Pathogenic

0.80

MetaSVM

Uncertain

0.59

MutationAssessor

Uncertain

2.0

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-1.4

REVEL

Pathogenic

0.67

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

0.063

Vest4

0.77

MutPred

0.55

Gain of catalytic residue at N6 (P = 0.0071);

MVP

0.93

MPC

1.5

ClinPred

0.99

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.48

gMVP

0.96

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