Variant chr2-206751028-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001039845.3(MDH1B):c.958G>T(p.Val320Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000577 in 1,608,208 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00040 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00060 ( 1 hom. )

Consequence

MDH1B
NM_001039845.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.267

Variant links:

Genes affected

MDH1B (HGNC:17836): (malate dehydrogenase 1B) Predicted to enable L-malate dehydrogenase activity. Predicted to be involved in NADH metabolic process; dicarboxylic acid metabolic process; and tricarboxylic acid cycle. [provided by Alliance of Genome Resources, Apr 2022]

MDH1B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.087547034).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MDH1B	NM_001039845.3 linkuse as main transcript	c.958G>T	p.Val320Phe	missense_variant	6/12	ENST00000374412.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MDH1B	ENST00000374412.8 linkuse as main transcript	c.958G>T	p.Val320Phe	missense_variant	6/12	1	NM_001039845.3	P4	Q5I0G3-1

Frequencies

GnomAD3 genomes

AF:

0.000401

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.00289

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000544

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000384

AC:

AN:

250200

Hom.:

AF XY:

0.000333

AC XY:

AN XY:

135196

show subpopulations

Gnomad AFR exome

AF:

0.000370

Gnomad AMR exome

AF:

0.000351

Gnomad ASJ exome

AF:

0.00159

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000529

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.000595

AC:

867

AN:

1456014

Hom.:

Cov.:

AF XY:

0.000577

AC XY:

418

AN XY:

724342

show subpopulations

Gnomad4 AFR exome

AF:

0.000120

Gnomad4 AMR exome

AF:

0.000359

Gnomad4 ASJ exome

AF:

0.00211

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000683

Gnomad4 OTH exome

AF:

0.000566

GnomAD4 genome

AF:

0.000401

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74392

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000393

Gnomad4 ASJ

AF:

0.00289

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000544

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000618

Hom.:

Bravo

AF:

0.000495

TwinsUK

AF:

0.00135

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000371

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 07, 2022

The c.958G>T (p.V320F) alteration is located in exon 6 (coding exon 6) of the MDH1B gene. This alteration results from a G to T substitution at nucleotide position 958, causing the valine (V) at amino acid position 320 to be replaced by a phenylalanine (F). 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

Benign

0.34

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.21

T;.;.

Eigen

Benign

-0.84

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.076

MetaRNN

Benign

0.088

T;T;T

MetaSVM

Benign

-0.83

MutationAssessor

Benign

1.9

M;.;M

MutationTaster

Benign

1.0

D;N;N;N

PrimateAI

Benign

0.32

PROVEAN

Benign

-2.3

N;N;N

REVEL

Benign

0.27

Sift

Benign

0.11

T;T;T

Sift4G

Benign

0.20

T;D;T

Polyphen

0.22

B;.;B

Vest4

0.79

MVP

0.29

MPC

0.26

ClinPred

0.019

GERP RS

-2.7

Varity_R

0.11

gMVP

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

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