2-85539298-A-G

Position:

chr2-85539298-A-G

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The ENST00000306434.8(MAT2A):c.11A>G(p.Gln4Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 1,604,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. Q4P) has been classified as Uncertain significance.

Frequency

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

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

MAT2A
ENST00000306434.8 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 2.58

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

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.

BP4

Computational evidence support a benign effect (MetaRNN=0.4106515).

BS2

High AC in GnomAdExome4 at 20 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAT2A	NM_005911.6 linkuse as main transcript	c.11A>G	p.Gln4Arg	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.11A>G	p.Gln4Arg	missense_variant	1/9	1	NM_005911.6	ENSP00000303147.3	P31153-1
MAT2A	ENST00000465151.5 linkuse as main transcript	n.131A>G		non_coding_transcript_exon_variant	1/2	2
MAT2A	ENST00000469221.5 linkuse as main transcript	n.131A>G		non_coding_transcript_exon_variant	1/3	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000138

AC:

AN:

1451978

Hom.:

Cov.:

AF XY:

0.0000125

AC XY:

AN XY:

722462

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:

0.0000181

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 22, 2023

This variant is present in population databases (no rsID available, gnomAD 0.007%). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. This missense change has been observed in individual(s) with clinical features of MAT2A-related conditions (Invitae). This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 4 of the MAT2A protein (p.Gln4Arg). -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 04, 2024

The c.11A>G (p.Q4R) alteration is located in exon 1 (coding exon 1) of the MAT2A gene. This alteration results from a A to G substitution at nucleotide position 11, causing the glutamine (Q) at amino acid position 4 to be replaced by an arginine (R). 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

0.087

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.0

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.16

Eigen

Benign

-0.15

Eigen_PC

Benign

0.024

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.64

M_CAP

Pathogenic

0.74

MetaRNN

Benign

0.41

MetaSVM

Uncertain

0.24

MutationAssessor

Benign

1.4

MutationTaster

Benign

0.96

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-0.15

REVEL

Uncertain

0.46

Sift

Benign

0.56

Sift4G

Benign

0.55

Polyphen

0.036

Vest4

0.47

MutPred

0.23

Gain of methylation at Q4 (P = 0.0074);

MVP

0.89

MPC

1.3

ClinPred

0.64

GERP RS

4.7

Varity_R

0.22

gMVP

0.73

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