Genetic Variant PDHB:p.Ala150Thr (chr3-58430798-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000925.4(PDHB):c.448G>A(p.Ala150Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,834 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A150S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PDHB
NM_000925.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.54

Publications

0 publications found

Variant links:

Genes affected

PDHB (HGNC:8808): (pyruvate dehydrogenase E1 subunit beta) The pyruvate dehydrogenase (PDH) complex is a nuclear-encoded mitochondrial multienzyme complex that catalyzes the overall conversion of pyruvate to acetyl-CoA and carbon dioxide, and provides the primary link between glycolysis and the tricarboxylic acid (TCA) cycle. The PDH complex is composed of multiple copies of three enzymatic components: pyruvate dehydrogenase (E1), dihydrolipoamide acetyltransferase (E2) and lipoamide dehydrogenase (E3). The E1 enzyme is a heterotetramer of two alpha and two beta subunits. This gene encodes the E1 beta subunit. Mutations in this gene are associated with pyruvate dehydrogenase E1-beta deficiency. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2012]

PDHB Gene-Disease associations (from GenCC):

pyruvate dehydrogenase E1-beta deficiency
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
Leigh syndrome
Inheritance: AR Classification: MODERATE Submitted by: ClinGen

PDHB links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDHB	NM_000925.4 link	c.448G>A	p.Ala150Thr	missense_variant	Exon 6 of 10	ENST00000302746.11	NP_000916.2	P11177-1A0A384MDR8
PDHB	NM_001315536.2 link	c.394G>A	p.Ala132Thr	missense_variant	Exon 5 of 9		NP_001302465.1	P11177-2
PDHB	NR_033384.2 link	n.554G>A		non_coding_transcript_exon_variant	Exon 5 of 9
PDHB	NM_001173468.2 link	c.404-10G>A		intron_variant	Intron 6 of 10		NP_001166939.1	P11177-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDHB	ENST00000302746.11 link	c.448G>A	p.Ala150Thr	missense_variant	Exon 6 of 10	1	NM_000925.4	ENSP00000307241.6		P11177-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461834

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727222

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111960

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.34

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Uncertain

0.060

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.68

D;.;T

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Uncertain

0.14

MetaRNN

Uncertain

0.45

T;T;T

MetaSVM

Uncertain

0.73

MutationAssessor

Uncertain

2.7

M;.;.

PhyloP100

4.5

PrimateAI

Uncertain

0.74

PROVEAN

Uncertain

-2.6

D;D;D

REVEL

Pathogenic

0.67

Sift

Benign

0.056

T;D;D

Sift4G

Uncertain

0.036

D;D;D

Polyphen

0.41

B;B;B

Vest4

0.45

MutPred

0.66

Loss of glycosylation at S151 (P = 0.196);.;.;

MVP

0.90

MPC

0.45

ClinPred

0.97

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.61

gMVP

0.94

Mutation Taster

=26/74

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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3-58430798-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over