Genetic Variant MTHFSD:p.Gly311Arg (chr16-86532232-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001159377.2(MTHFSD):c.931G>A(p.Gly311Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000324 in 1,571,708 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

MTHFSD
NM_001159377.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.99

Variant links:

Genes affected

MTHFSD (HGNC:25778): (methenyltetrahydrofolate synthetase domain containing) Enables RNA binding activity. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

MTHFSD links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.83

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTHFSD	NM_001159377.2 link	c.931G>A	p.Gly311Arg	missense_variant	Exon 8 of 8	ENST00000360900.11	NP_001152849.1	Q2M296-1B4DN17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MTHFSD	ENST00000360900.11 link	c.931G>A	p.Gly311Arg	missense_variant	Exon 8 of 8	1	NM_001159377.2	ENSP00000354152.6		Q2M296-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

151970

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000603

AC:

AN:

198984

Hom.:

AF XY:

0.0000642

AC XY:

AN XY:

108976

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000111

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000996

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000338

AC:

AN:

1419738

Hom.:

Cov.:

AF XY:

0.0000270

AC XY:

AN XY:

703004

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000104

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000394

Gnomad4 OTH exome

AF:

0.0000171

GnomAD4 genome

AF:

0.0000197

AC:

AN:

151970

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74238

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000593

Hom.:

ESP6500AA

AF:

0.000268

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000415

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.931G>A (p.G311R) alteration is located in exon 8 (coding exon 8) of the MTHFSD gene. This alteration results from a G to A substitution at nucleotide position 931, causing the glycine (G) at amino acid position 311 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.50

BayesDel_addAF

Uncertain

0.049

BayesDel_noAF

Uncertain

0.050

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0069

T;T;.;.;.

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.88

D;D;D;D;D

M_CAP

Benign

0.042

MetaRNN

Pathogenic

0.83

D;D;D;D;D

MetaSVM

Benign

-0.77

MutationAssessor

Pathogenic

3.4

M;.;.;.;M

PrimateAI

Uncertain

0.76

PROVEAN

Uncertain

-4.0

D;D;.;D;D

REVEL

Uncertain

0.36

Sift

Uncertain

0.0040

D;D;.;D;D

Sift4G

Uncertain

0.0050

D;D;D;D;D

Polyphen

1.0

D;.;D;.;.

Vest4

0.73

MutPred

0.75

Gain of MoRF binding (P = 0.0115);.;.;.;Gain of MoRF binding (P = 0.0115);

MVP

0.44

MPC

0.17

ClinPred

0.94

GERP RS

5.4

Varity_R

0.38

gMVP

0.86

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over