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Mitochondrial disease

Gene: HADHB

Green List (high evidence)

HADHB (hydroxyacyl-CoA dehydrogenase trifunctional multienzyme complex subunit beta)
EnsemblGeneIds (GRCh38): ENSG00000138029
EnsemblGeneIds (GRCh37): ENSG00000138029
OMIM: 143450, Gene2Phenotype
HADHB is in 16 panels

2 reviews

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Green List (high evidence)

The HADHA and HADHB genes encode the alpha and beta subunits of the mitochondrial trifunctional protein, respectively. The heterocomplex contains 4 alpha and 4 beta subunits and catalyzes 3 steps in the beta-oxidation of fatty acids, including the long-chain 3-hydroxyacyl-CoA dehydrogenase step. The beta subunit harbors the 3-ketoacyl-CoA thiolase activity.

Clinically, classic trifunctional protein deficiency can be classified into 3 main clinical phenotypes: neonatal onset of a severe, lethal condition resulting in sudden unexplained infant death, infantile onset of a hepatic Reye-like syndrome, and late-adolescent onset of primarily a skeletal myopathy. Peripheral neuropathy also reported.

Well established gene-disease association.
Created: 2 May 2022, 1 a.m. | Last Modified: 2 May 2022, 1 a.m.
Panel Version: 0.13556

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Trifunctional protein deficiency, MIM# 609015

Publications

Bryony Thompson (Royal Melbourne Hospital)

Green List (high evidence)

The heterooctameric mitochondrial trifunctional protein (MTP), composed of four α- and β-subunits harbours three enzymes that each perform a different function in mitochondrial fatty acid β-oxidation. MTP deficiency is a defect in the substrate-generating upstream reactions of OXPHOS. >3 cases reported.
Sources: NHS GMS, Literature
Created: 21 Mar 2020, 8:02 a.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Trifunctional protein deficiency MIM#609015

Publications

History Filter Activity

3 Oct 2022, Gel status: 3

Added Tag

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Tag treatable tag was added to gene: HADHB.

21 Mar 2020, Gel status: 3

Entity classified by Genomics England curator

Bryony Thompson (Royal Melbourne Hospital)

Gene: hadhb has been classified as Green List (High Evidence).

21 Mar 2020, Gel status: 3

Entity classified by Genomics England curator

Bryony Thompson (Royal Melbourne Hospital)

Gene: hadhb has been classified as Green List (High Evidence).

21 Mar 2020, Gel status: 1

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes

Bryony Thompson (Royal Melbourne Hospital)

gene: HADHB was added gene: HADHB was added to Mitochondrial disease. Sources: NHS GMS,Literature Mode of inheritance for gene: HADHB was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: HADHB were set to 25778941; 30682426; 9259266; 29956646 Phenotypes for gene: HADHB were set to Trifunctional protein deficiency MIM#609015 Review for gene: HADHB was set to GREEN