Variant 2-206751066-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001039845.3(MDH1B):c.920A>G(p.Asp307Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000211 in 1,420,744 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

MDH1B
NM_001039845.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.13

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MDH1B	NM_001039845.3 linkuse as main transcript	c.920A>G	p.Asp307Gly	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.920A>G	p.Asp307Gly	missense_variant	6/12	1	NM_001039845.3	P4	Q5I0G3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000845

AC:

AN:

236680

Hom.:

AF XY:

0.00

AC XY:

AN XY:

127938

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000662

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000211

AC:

AN:

1420744

Hom.:

Cov.:

AF XY:

0.00000142

AC XY:

AN XY:

705696

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000494

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:

9.18e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

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

Apr 18, 2023

The c.920A>G (p.D307G) alteration is located in exon 6 (coding exon 6) of the MDH1B gene. This alteration results from a A to G substitution at nucleotide position 920, causing the aspartic acid (D) at amino acid position 307 to be replaced by a glycine (G). 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

0.28

BayesDel_addAF

Benign

-0.066

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.26

T;.;.

Eigen

Uncertain

0.63

Eigen_PC

Pathogenic

0.66

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.85

T;T;T

M_CAP

Benign

0.044

MetaRNN

Uncertain

0.65

D;D;D

MetaSVM

Uncertain

-0.28

MutationAssessor

Uncertain

2.7

M;.;M

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Benign

0.38

PROVEAN

Pathogenic

-4.6

D;D;D

REVEL

Uncertain

0.44

Sift

Uncertain

0.023

D;D;D

Sift4G

Uncertain

0.027

D;D;D

Polyphen

0.79

P;.;P

Vest4

0.68

MutPred

0.54

Gain of MoRF binding (P = 0.0311);.;Gain of MoRF binding (P = 0.0311);

MVP

0.73

MPC

0.51

ClinPred

0.94

GERP RS

6.0

Varity_R

0.41

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.13

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