HSPD1 encodes a mitochondrial chaperonin that plays essential roles in protein folding and cellular metabolism. The protein forms heptameric rings that work with Hsp10 to facilitate correct folding of imported mitochondrial proteins and prevent misfolding under stress conditions 1. HSPD1 functions through ATP-dependent cycles where substrate proteins are sequestered within the chaperonin cavity for proper folding 1. Beyond its classical chaperone function, HSPD1 stabilizes ATP5A1, a key component of mitochondrial ATP synthase, by reducing its K48-linked ubiquitination and degradation, thereby activating AKT/mTOR signaling pathways 2. The protein also binds to and regulates repair of deoxyinosine in DNA, contributing to mitochondrial DNA damage control 3. HSPD1 is highly expressed in various cancers including osteosarcoma and non-small cell lung cancer, where it promotes tumor progression, metastasis, and epithelial-mesenchymal transition 24. High HSPD1 expression correlates with poor prognosis in cancer patients, and its inhibition severely impairs oxidative phosphorylation and suppresses cancer cell proliferation 4. These findings establish HSPD1 as both a critical metabolic regulator and potential therapeutic target in cancer treatment.