Genetic Variant MTHFR:c.*1018A>G (chr1-11789662-T-C) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_005957.5(MTHFR):c.*1018A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00017 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

MTHFR
NM_005957.5 3_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.11

Publications

0 publications found

Variant links:

Genes affected

MTHFR (HGNC:7436): (methylenetetrahydrofolate reductase) The protein encoded by this gene catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a co-substrate for homocysteine remethylation to methionine. Genetic variation in this gene influences susceptibility to occlusive vascular disease, neural tube defects, colon cancer and acute leukemia, and mutations in this gene are associated with methylenetetrahydrofolate reductase deficiency.[provided by RefSeq, Oct 2009]

MTHFR links:

C1orf167 (HGNC:25262): (chromosome 1 open reading frame 167) Implicated in coronary artery disease. [provided by Alliance of Genome Resources, Apr 2022]

C1orf167 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_005957.5, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005957.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MTHFR	NM_005957.5	MANE Select	c.*1018A>G	3_prime_UTR	Exon 12 of 12	NP_005948.3
MTHFR	NM_001330358.2		c.*1018A>G	3_prime_UTR	Exon 12 of 12	NP_001317287.1	P42898-2
MTHFR	NM_001410750.1		c.*1018A>G	3_prime_UTR	Exon 12 of 12	NP_001397679.1	Q5SNW7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MTHFR	ENST00000376590.9	TSL:1 MANE Select	c.*1018A>G	3_prime_UTR	Exon 12 of 12	ENSP00000365775.3	P42898-1
MTHFR	ENST00000376592.6	TSL:1	c.*1018A>G	3_prime_UTR	Exon 12 of 12	ENSP00000365777.1	P42898-1
MTHFR	ENST00000376583.7	TSL:5	c.*1018A>G	3_prime_UTR	Exon 12 of 12	ENSP00000365767.3	P42898-2

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

152034

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000168

AC:

AN:

184040

Hom.:

Cov.:

AF XY:

0.000243

AC XY:

AN XY:

98800

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

5002

American (AMR)

AF:

0.00

AC:

AN:

9332

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3488

East Asian (EAS)

AF:

0.00

AC:

AN:

6682

South Asian (SAS)

AF:

0.000967

AC:

AN:

32044

European-Finnish (FIN)

AF:

0.00

AC:

AN:

11512

Middle Eastern (MID)

AF:

0.00

AC:

AN:

576

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

107090

Other (OTH)

AF:

0.00

AC:

AN:

8314

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

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

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

152034

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74242

African (AFR)

AF:

0.00

AC:

AN:

41394

American (AMR)

AF:

0.00

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68006

Other (OTH)

AF:

0.00

AC:

AN:

2082

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Neural tube defects, folate-sensitive (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

0.061

(source)

DANN

Benign

0.53

PhyloP100

-2.1

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over