2-85539319-C-T

Position:

chr2-85539319-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_005911.6(MAT2A):c.32C>T(p.Ala11Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000168 in 1,606,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

MAT2A
NM_005911.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.39

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 -5 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=0.13891983).

BS2

High AC in GnomAd4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAT2A	NM_005911.6 linkuse as main transcript	c.32C>T	p.Ala11Val	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.32C>T	p.Ala11Val	missense_variant	1/9	1	NM_005911.6	ENSP00000303147.3	P31153-1
MAT2A	ENST00000465151.5 linkuse as main transcript	n.152C>T		non_coding_transcript_exon_variant	1/2	2
MAT2A	ENST00000469221.5 linkuse as main transcript	n.152C>T		non_coding_transcript_exon_variant	1/3	2

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152232

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000289

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.0000165

AC:

AN:

242004

Hom.:

AF XY:

0.0000152

AC XY:

AN XY:

131616

show subpopulations

Gnomad AFR exome

AF:

0.000273

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000894

AC:

AN:

1453850

Hom.:

Cov.:

AF XY:

0.00000691

AC XY:

AN XY:

723394

show subpopulations

Gnomad4 AFR exome

AF:

0.000340

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:

0.00

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.0000654

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

Alfa

AF:

0.0000109

Hom.:

Bravo

AF:

0.0000793

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

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

Feb 07, 2021

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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with MAT2A-related disease. This variant is present in population databases (rs139547506, ExAC 0.03%). This sequence change replaces alanine with valine at codon 11 of the MAT2A protein (p.Ala11Val). The alanine residue is weakly conserved and there is a small physicochemical difference between alanine and valine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.14

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

Eigen

Benign

-0.17

Eigen_PC

Benign

0.016

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.81

M_CAP

Pathogenic

0.76

MetaRNN

Benign

0.14

MetaSVM

Uncertain

0.15

MutationAssessor

Benign

0.14

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-0.050

REVEL

Benign

0.17

Sift

Benign

0.22

Sift4G

Benign

0.63

Polyphen

0.016

Vest4

0.23

MVP

0.59

MPC

1.2

ClinPred

0.17

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.31

gMVP

0.61

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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