5-79077485-T-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_017614.5(BHMT2):c.39T>G(p.Ile13Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000155 in 1,612,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00016 ( 0 hom. )

Consequence

BHMT2
NM_017614.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.815

Publications

2 publications found

Variant links:

Genes affected

BHMT2 (HGNC:1048): (betaine--homocysteine S-methyltransferase 2) Homocysteine is a sulfur-containing amino acid that plays a crucial role in methylation reactions. Transfer of the methyl group from betaine to homocysteine creates methionine, which donates the methyl group to methylate DNA, proteins, lipids, and other intracellular metabolites. The protein encoded by this gene is one of two methyl transferases that can catalyze the transfer of the methyl group from betaine to homocysteine. Anomalies in homocysteine metabolism have been implicated in disorders ranging from vascular disease to neural tube birth defects such as spina bifida. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2010]

BHMT2 links:

DMGDH (HGNC:24475): (dimethylglycine dehydrogenase) This gene encodes an enzyme involved in the catabolism of choline, catalyzing the oxidative demethylation of dimethylglycine to form sarcosine. The enzyme is found as a monomer in the mitochondrial matrix, and uses flavin adenine dinucleotide and folate as cofactors. Mutation in this gene causes dimethylglycine dehydrogenase deficiency, characterized by a fishlike body odor, chronic muscle fatigue, and elevated levels of the muscle form of creatine kinase in serum. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

DMGDH Gene-Disease associations (from GenCC):

dimethylglycine dehydrogenase deficiency
Inheritance: AR Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, ClinGen

DMGDH links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.23398125).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017614.5. 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
	BHMT2	NM_017614.5	MANE Select	c.39T>G	p.Ile13Met	missense	Exon 2 of 8	NP_060084.2
	BHMT2	NM_001178005.2		c.39T>G	p.Ile13Met	missense	Exon 2 of 7	NP_001171476.1	Q9H2M3-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BHMT2	ENST00000255192.8	TSL:1 MANE Select	c.39T>G	p.Ile13Met	missense	Exon 2 of 8	ENSP00000255192.3	Q9H2M3-1
BHMT2	ENST00000518666.5	TSL:5	c.-142T>G		5_prime_UTR_premature_start_codon_gain	Exon 3 of 5	ENSP00000428640.1	E5RH96
BHMT2	ENST00000896185.1		c.39T>G	p.Ile13Met	missense	Exon 2 of 8	ENSP00000566244.1

Frequencies

GnomAD3 genomes

AF:

0.0000660

AC:

AN:

151590

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000485

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:

0.000103

Gnomad OTH

AF:

0.000481

GnomAD2 exomes

AF:

0.0000679

AC:

AN:

250268

AF XY:

0.0000739

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000133

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000164

AC:

240

AN:

1460982

Hom.:

Cov.:

AF XY:

0.000176

AC XY:

128

AN XY:

726732

show subpopulations

African (AFR)

AF:

0.000179

AC:

AN:

33438

American (AMR)

AF:

0.0000224

AC:

AN:

44598

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26110

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.00

AC:

AN:

85932

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000201

AC:

224

AN:

1111700

Other (OTH)

AF:

0.000133

AC:

AN:

60352

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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:

0.0000660

AC:

AN:

151590

Hom.:

Cov.:

AF XY:

0.0000811

AC XY:

AN XY:

74012

show subpopulations

African (AFR)

AF:

0.0000485

AC:

AN:

41270

American (AMR)

AF:

0.00

AC:

AN:

15218

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

67932

Other (OTH)

AF:

0.000481

AC:

AN:

2080

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000138

Hom.:

Bravo

AF:

0.0000680

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.40

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.015

Eigen

Benign

-0.033

Eigen_PC

Benign

-0.092

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.027

MetaRNN

Benign

0.23

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.7

PhyloP100

0.81

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-1.2

REVEL

Benign

0.17

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.018

Polyphen

0.34

Vest4

0.45

MVP

0.43

MPC

0.43

ClinPred

0.14

GERP RS

2.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.12

gMVP

0.79

Mutation Taster

=83/17

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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