Atlas One · Host Biology · Scale 03 — Molecular

SDHB

SDHB is the iron-sulfur subunit of mitochondrial complex II; LOF → succinate → PHD inhibition → HIF-1α pseudohypoxia + TET inhibition → CIMP; germline SDHB causes paraganglioma type 4 (malignancy risk ~30-40%); SDH-deficient GIST/RCC are WHO entities.

Also known as: SDHB, succinate dehydrogenase B, complex II, SDH complex, SDH-deficient GIST, SDH-deficient RCC, PGL4, hereditary paraganglioma, SDHB paraganglioma, succinate dehydrogenase iron-sulfur

Scale 03 — MolecularScale
draftStatus
2026-06-06Last Reviewed
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sdhb

SDHB

SDHB is the iron-sulfur subunit of mitochondrial complex II; LOF → succinate → PHD inhibition → HIF-1α pseudohypoxia + TET inhibition → CIMP; germline SDHB causes paraganglioma type 4 (malignancy risk ~30-40%); SDH-deficient GIST/RCC are WHO entities.