Genetic Variant MAT2A:c.-132G>A (chr2-85539156-G-A) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_005911.6(MAT2A):c.-132G>A variant causes a upstream gene change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00251 in 667,154 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0083 ( 22 hom., cov: 33)

Exomes 𝑓: 0.00081 ( 4 hom. )

Consequence

MAT2A
NM_005911.6 upstream_gene

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.108

Publications

1 publications found

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:

PARTICL (HGNC:50886): (promoter of MAT2A antisense radiation-induced circulating long non-coding RNA)

PARTICL links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.71).

BP6

Variant 2-85539156-G-A is Benign according to our data. Variant chr2-85539156-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 679475.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00826 (1257/152194) while in subpopulation AFR AF = 0.0282 (1173/41542). AF 95% confidence interval is 0.0269. There are 22 homozygotes in GnomAd4. There are 607 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 22 Unknown gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005911.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAT2A	NM_005911.6	MANE Select	c.-132G>A		upstream_gene	N/A	NP_005902.1	P31153-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MAT2A	ENST00000306434.8	TSL:1 MANE Select	c.-132G>A	upstream_gene	N/A	ENSP00000303147.3	P31153-1
MAT2A	ENST00000881374.1		c.-132G>A	upstream_gene	N/A	ENSP00000551433.1
MAT2A	ENST00000881376.1		c.-132G>A	upstream_gene	N/A	ENSP00000551435.1

Frequencies

GnomAD3 genomes

AF:

0.00825

AC:

1255

AN:

152080

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0283

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00413

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.00382

GnomAD4 exome

AF:

0.000812

AC:

418

AN:

514960

Hom.:

Cov.:

AF XY:

0.000705

AC XY:

192

AN XY:

272422

show subpopulations

African (AFR)

AF:

0.0244

AC:

262

AN:

10742

American (AMR)

AF:

0.00281

AC:

AN:

20606

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

13838

East Asian (EAS)

AF:

0.000119

AC:

AN:

25242

South Asian (SAS)

AF:

0.0000205

AC:

AN:

48702

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42390

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2224

European-Non Finnish (NFE)

AF:

0.000129

AC:

AN:

324492

Other (OTH)

AF:

0.00195

AC:

AN:

26724

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00826

AC:

1257

AN:

152194

Hom.:

Cov.:

AF XY:

0.00816

AC XY:

607

AN XY:

74406

show subpopulations

African (AFR)

AF:

0.0282

AC:

1173

AN:

41542

American (AMR)

AF:

0.00412

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5152

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.0000943

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000177

AC:

AN:

67986

Other (OTH)

AF:

0.00378

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

119

178

238

297

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00563

Hom.:

Bravo

AF:

0.00965

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.71

CADD

Benign

(source)

DANN

Benign

0.95

PhyloP100

0.11

PromoterAI

-0.086

Neutral

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over