chr1-236897072-A-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000254.3(MTR):c.3665A>G(p.Asn1222Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00361 in 1,614,034 control chromosomes in the GnomAD database, including 198 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.019 ( 109 hom., cov: 32)

Exomes 𝑓: 0.0020 ( 89 hom. )

Consequence

MTR
NM_000254.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 2.04

Publications

5 publications found

Variant links:

Genes affected

MTR (HGNC:7468): (5-methyltetrahydrofolate-homocysteine methyltransferase) This gene encodes the 5-methyltetrahydrofolate-homocysteine methyltransferase. This enzyme, also known as cobalamin-dependent methionine synthase, catalyzes the final step in methionine biosynthesis. Mutations in MTR have been identified as the underlying cause of methylcobalamin deficiency complementation group G. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2014]

MTR Gene-Disease associations (from GenCC):

methylcobalamin deficiency type cblG
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen, G2P

MTR links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0029565692).

BP6

Variant 1-236897072-A-G is Benign according to our data. Variant chr1-236897072-A-G is described in ClinVar as Benign. ClinVar VariationId is 296584.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0637 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000254.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MTR	NM_000254.3	MANE Select	c.3665A>G	p.Asn1222Ser	missense	Exon 32 of 33	NP_000245.2	Q99707-1
MTR	NM_001291939.1		c.3512A>G	p.Asn1171Ser	missense	Exon 31 of 32	NP_001278868.1	Q99707-2
MTR	NM_001410942.1		c.3476A>G	p.Asn1159Ser	missense	Exon 30 of 31	NP_001397871.1	A0A7P0TAJ0

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MTR	ENST00000366577.10	TSL:1 MANE Select	c.3665A>G	p.Asn1222Ser	missense	Exon 32 of 33	ENSP00000355536.5	Q99707-1
MTR	ENST00000535889.6	TSL:1	c.3512A>G	p.Asn1171Ser	missense	Exon 31 of 32	ENSP00000441845.1	Q99707-2
MTR	ENST00000366576.3	TSL:1	c.2327A>G	p.Asn776Ser	missense	Exon 19 of 20	ENSP00000355535.3	B1ANE3

Frequencies

GnomAD3 genomes

AF:

0.0189

AC:

2869

AN:

152102

Hom.:

109

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0658

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00622

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.0115

GnomAD2 exomes

AF:

0.00492

AC:

1238

AN:

251458

AF XY:

0.00355

show subpopulations

Gnomad AFR exome

AF:

0.0671

Gnomad AMR exome

AF:

0.00257

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.00179

GnomAD4 exome

AF:

0.00202

AC:

2947

AN:

1461814

Hom.:

Cov.:

AF XY:

0.00178

AC XY:

1293

AN XY:

727216

show subpopulations

African (AFR)

AF:

0.0667

AC:

2233

AN:

33462

American (AMR)

AF:

0.00322

AC:

144

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.000191

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.000719

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00243

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000202

AC:

225

AN:

1111960

Other (OTH)

AF:

0.00437

AC:

264

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

157

313

470

626

783

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

160

240

320

400

<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:

0.0189

AC:

2874

AN:

152220

Hom.:

109

Cov.:

AF XY:

0.0187

AC XY:

1389

AN XY:

74436

show subpopulations

African (AFR)

AF:

0.0658

AC:

2731

AN:

41536

American (AMR)

AF:

0.00621

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00145

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00342

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000235

AC:

AN:

67992

Other (OTH)

AF:

0.0114

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.507

Heterozygous variant carriers

138

277

415

554

692

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

102

136

170

<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:

0.00607

Hom.:

Bravo

AF:

0.0209

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.0604

AC:

266

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.00626

AC:

760

Asia WGS

AF:

0.00346

AC:

AN:

3478

EpiCase

AF:

0.000327

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Disorders of Intracellular Cobalamin Metabolism (1)

Methylcobalamin deficiency type cblG (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.49

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.72

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.20

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.91

MetaRNN

Benign

0.0030

MetaSVM

Benign

-0.79

MutationAssessor

Benign

1.2

PhyloP100

2.0

PrimateAI

Benign

0.33

PROVEAN

Uncertain

-2.5

REVEL

Benign

0.23

Sift

Benign

0.033

Sift4G

Uncertain

0.038

Polyphen

0.0080

Vest4

0.22

MVP

0.70

MPC

0.33

ClinPred

0.015

GERP RS

4.8

Varity_R

0.11

gMVP

0.75

Mutation Taster

=91/9

polymorphism (auto)

(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