Genetic Variant MAT2B:p.Thr302Ile (chr5-163518263-C-T) – 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_013283.5(MAT2B):c.905C>T(p.Thr302Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000769 in 1,613,928 control chromosomes in the GnomAD database, including 15 homozygotes. 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 Benign (★).

Frequency

Genomes: 𝑓 0.00095 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00075 ( 13 hom. )

Consequence

MAT2B
NM_013283.5 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.870

Publications

10 publications found

Variant links:

Genes affected

MAT2B (HGNC:6905): (methionine adenosyltransferase 2 non-catalytic beta subunit) The protein encoded by this gene belongs to the methionine adenosyltransferase (MAT) family. MAT catalyzes the biosynthesis of S-adenosylmethionine from methionine and ATP. This protein is the regulatory beta subunit of MAT. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Nov 2012]

MAT2B 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 (MetaRNN=0.005980402).

BP6

Variant 5-163518263-C-T is Benign according to our data. Variant chr5-163518263-C-T is described in ClinVar as Benign. ClinVar VariationId is 717327.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000946 (144/152268) while in subpopulation EAS AF = 0.0212 (110/5180). AF 95% confidence interval is 0.018. There are 2 homozygotes in GnomAd4. There are 58 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_013283.5. 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
	MAT2B	NM_013283.5	MANE Select	c.905C>T	p.Thr302Ile	missense	Exon 7 of 7	NP_037415.1	A0A140VJP2
	MAT2B	NM_182796.2		c.872C>T	p.Thr291Ile	missense	Exon 7 of 7	NP_877725.1	Q9NZL9-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MAT2B	ENST00000321757.11	TSL:1 MANE Select	c.905C>T	p.Thr302Ile	missense	Exon 7 of 7	ENSP00000325425.6	Q9NZL9-1
MAT2B	ENST00000280969.9	TSL:1	c.872C>T	p.Thr291Ile	missense	Exon 7 of 7	ENSP00000280969.5	Q9NZL9-2
MAT2B	ENST00000518095.5	TSL:1	c.*1492C>T		3_prime_UTR	Exon 5 of 5	ENSP00000428046.1	Q9NZL9-3

Frequencies

GnomAD3 genomes

AF:

0.000946

AC:

144

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0212

Gnomad SAS

AF:

0.00207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.00188

AC:

472

AN:

251222

AF XY:

0.00172

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0224

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000792

Gnomad OTH exome

AF:

0.00229

GnomAD4 exome

AF:

0.000751

AC:

1097

AN:

1461660

Hom.:

Cov.:

AF XY:

0.000755

AC XY:

549

AN XY:

727126

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.0000671

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0186

AC:

738

AN:

39694

South Asian (SAS)

AF:

0.00138

AC:

119

AN:

86234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000558

AC:

AN:

1111862

Other (OTH)

AF:

0.00288

AC:

174

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

114

172

229

286

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome 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

GnomAD4 genome

AF:

0.000946

AC:

144

AN:

152268

Hom.:

Cov.:

AF XY:

0.000779

AC XY:

AN XY:

74446

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41546

American (AMR)

AF:

0.000654

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.0212

AC:

110

AN:

5180

South Asian (SAS)

AF:

0.00207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68030

Other (OTH)

AF:

0.00143

AC:

AN:

2104

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome 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

Alfa

AF:

0.00113

Hom.:

Bravo

AF:

0.00132

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00176

AC:

214

Asia WGS

AF:

0.0200

AC:

AN:

3478

EpiCase

AF:

0.0000546

EpiControl

AF:

0.000178

ClinVar

ClinVar submissions

Significance: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

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.34

Eigen

Benign

-0.28

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.67

LIST_S2

Uncertain

0.90

MetaRNN

Benign

0.0060

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

PhyloP100

0.87

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.7

REVEL

Benign

0.050

Sift

Benign

0.18

Sift4G

Benign

0.18

Polyphen

0.018

Vest4

0.16

MVP

0.45

MPC

0.42

ClinPred

0.017

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.19

gMVP

0.36

Mutation Taster

=92/8

polymorphism

(source)

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

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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