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SDHD

Chr 11q23.1

succinate dehydrogenase complex subunit D

Aliases:
cybS
MANE:
ENST00000375549.8

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Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult solid tumours cancer susceptibility

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Adult solid tumours for rare disease

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Inherited phaeochromocytoma and paraganglioma

    MONOALLELIC, autosomal or pseudoautosomal, maternally imprinted (paternal allele expressed)
  • Inherited phaeochromocytoma and paraganglioma excluding NF1

    MONOALLELIC, autosomal or pseudoautosomal, maternally imprinted (paternal allele expressed)
  • Inherited predisposition to GIST

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Mitochondrial disorder with complex II deficiency

    BIALLELIC, autosomal or pseudoautosomal
  • Mitochondrial disorders

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • pheochromocytoma/paraganglioma syndrome 1

    0.81
  • hereditary pheochromocytoma-paraganglioma

    0.79
  • paragangliomas with sensorineural hearing loss

    0.78
  • Carney-Stratakis syndrome

    0.76
  • pheochromocytoma

    0.75
  • mitochondrial complex 2 deficiency, nuclear type 3

    0.69
  • Cowden syndrome 3

    0.68
  • mitochondrial complex II deficiency, nuclear type 1

    0.67
  • Cowden disease

    0.61
  • Inherited cancer-predisposing syndrome

    0.57

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Succinate dehydrogenase [ubiquinone] cytochrome b small subunit, mitochondrial

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q) (PubMed:10482792, PubMed:9533030). SDH also oxidizes malate to the non-canonical enol form of oxaloacetate, enol-oxaloacetate (By similarity). Enol-oxaloacetate, which is a potent inhibitor of the succinate dehydrogenase activity, is further isomerized into keto-oxaloacetate (By similarity)

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.