14-64449480-G-A

Position:

chr14-64449480-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_005956.4(MTHFD1):c.2315G>A(p.Arg772His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00126 in 1,613,902 control chromosomes in the GnomAD database, including 22 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R772C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0069 ( 8 hom., cov: 32)

Exomes 𝑓: 0.00067 ( 14 hom. )

Consequence

MTHFD1
NM_005956.4 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.929

Variant links:

Genes affected

MTHFD1 (HGNC:7432): (methylenetetrahydrofolate dehydrogenase, cyclohydrolase and formyltetrahydrofolate synthetase 1) This gene encodes a protein that possesses three distinct enzymatic activities, 5,10-methylenetetrahydrofolate dehydrogenase, 5,10-methenyltetrahydrofolate cyclohydrolase and 10-formyltetrahydrofolate synthetase. Each of these activities catalyzes one of three sequential reactions in the interconversion of 1-carbon derivatives of tetrahydrofolate, which are substrates for methionine, thymidylate, and de novo purine syntheses. The trifunctional enzymatic activities are conferred by two major domains, an aminoterminal portion containing the dehydrogenase and cyclohydrolase activities and a larger synthetase domain. [provided by RefSeq, Jul 2008]

MTHFD1 links:

ZBTB25 (HGNC:13112): (zinc finger and BTB domain containing 25) Predicted to enable DNA-binding transcription repressor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ZBTB25 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0037965775).

BP6

Variant 14-64449480-G-A is Benign according to our data. Variant chr14-64449480-G-A is described in ClinVar as [Benign]. Clinvar id is 781286.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr14-64449480-G-A is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00694 (1056/152270) while in subpopulation AFR AF= 0.024 (999/41542). AF 95% confidence interval is 0.0228. There are 8 homozygotes in gnomad4. There are 494 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 8 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
MTHFD1	NM_005956.4 linkuse as main transcript	c.2315G>A	p.Arg772His	missense_variant	24/28	ENST00000652337.1
MTHFD1	NM_001364837.1 linkuse as main transcript	c.2315G>A	p.Arg772His	missense_variant	24/27
ZBTB25	NM_001304508.1 linkuse as main transcript	c.*71C>T		3_prime_UTR_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MTHFD1	ENST00000652337.1 linkuse as main transcript	c.2315G>A	p.Arg772His	missense_variant	24/28		NM_005956.4	P1

Frequencies

GnomAD3 genomes

AF:

0.00693

AC:

1054

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00229

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00621

GnomAD3 exomes

AF:

0.00184

AC:

461

AN:

251224

Hom.:

AF XY:

0.00137

AC XY:

186

AN XY:

135772

show subpopulations

Gnomad AFR exome

AF:

0.0247

Gnomad AMR exome

AF:

0.00116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.00196

GnomAD4 exome

AF:

0.000672

AC:

982

AN:

1461632

Hom.:

Cov.:

AF XY:

0.000576

AC XY:

419

AN XY:

727124

show subpopulations

Gnomad4 AFR exome

AF:

0.0234

Gnomad4 AMR exome

AF:

0.00141

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000162

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000989

Gnomad4 OTH exome

AF:

0.00169

GnomAD4 genome

AF:

0.00694

AC:

1056

AN:

152270

Hom.:

Cov.:

AF XY:

0.00663

AC XY:

494

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.0240

Gnomad4 AMR

AF:

0.00229

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00614

Alfa

AF:

0.000821

Hom.:

Bravo

AF:

0.00792

ESP6500AA

AF:

0.0236

AC:

104

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.00240

AC:

291

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -

MTHFD1-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jun 05, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.060

BayesDel_addAF

Benign

-0.62

BayesDel_noAF

Benign

-0.64

CADD

Benign

8.8

DANN

Uncertain

0.99

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.68

.;T

MetaRNN

Benign

0.0038

T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.21

PROVEAN

Benign

-1.4

N;.

REVEL

Benign

0.033

Sift

Uncertain

0.017

D;.

Sift4G

Uncertain

0.039

D;D

Polyphen

0.036

B;.

Vest4

0.14

MVP

0.28

MPC

0.45

ClinPred

0.012

GERP RS

1.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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

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